Unify formatting

src/main/java/dev/kruhlmann/imgfloat/ImgfloatApplication.java

@@ -7,6 +7,7 @@ import org.springframework.scheduling.annotation.EnableAsync;
 @EnableAsync
 @SpringBootApplication
 public class ImgfloatApplication {
+
     public static void main(String[] args) {
         SpringApplication.run(ImgfloatApplication.class, args);
     }

src/main/java/dev/kruhlmann/imgfloat/config/OAuth2AuthorizedClientPersistenceConfig.java

@@ -12,8 +12,10 @@ import org.springframework.security.oauth2.client.web.OAuth2AuthorizedClientRepo
 public class OAuth2AuthorizedClientPersistenceConfig {
 
     @Bean
-    OAuth2AuthorizedClientService oauth2AuthorizedClientService(JdbcOperations jdbcOperations,
-                                                                ClientRegistrationRepository clientRegistrationRepository) {
+    OAuth2AuthorizedClientService oauth2AuthorizedClientService(
+        JdbcOperations jdbcOperations,
+        ClientRegistrationRepository clientRegistrationRepository
+    ) {
         return new SQLiteOAuth2AuthorizedClientService(jdbcOperations, clientRegistrationRepository);
     }
 

src/main/java/dev/kruhlmann/imgfloat/config/OAuth2RestTemplateFactory.java

@@ -1,7 +1,6 @@
 package dev.kruhlmann.imgfloat.config;
 
 import java.util.Arrays;
-
 import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.client.SimpleClientHttpRequestFactory;
 import org.springframework.http.converter.FormHttpMessageConverter;
@@ -10,14 +9,12 @@ import org.springframework.web.client.RestTemplate;
 
 final class OAuth2RestTemplateFactory {
 
-    private OAuth2RestTemplateFactory() {
-    }
+    private OAuth2RestTemplateFactory() {}
 
     static RestTemplate create() {
-        RestTemplate restTemplate = new RestTemplate(Arrays.asList(
-                new FormHttpMessageConverter(),
-                new OAuth2AccessTokenResponseHttpMessageConverter()
-        ));
+        RestTemplate restTemplate = new RestTemplate(
+            Arrays.asList(new FormHttpMessageConverter(), new OAuth2AccessTokenResponseHttpMessageConverter())
+        );
         ClientHttpRequestFactory requestFactory = restTemplate.getRequestFactory();
         if (requestFactory instanceof SimpleClientHttpRequestFactory simple) {
             simple.setConnectTimeout(30_000);

src/main/java/dev/kruhlmann/imgfloat/config/OpenApiConfig.java

@@ -1,7 +1,7 @@
 package dev.kruhlmann.imgfloat.config;
 
-import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.info.Info;
 import io.swagger.v3.oas.models.security.OAuthFlow;
 import io.swagger.v3.oas.models.security.OAuthFlows;
@@ -18,21 +18,26 @@ public class OpenApiConfig {
     @Bean
     public OpenAPI imgfloatOpenAPI() {
         return new OpenAPI()
-                .components(new Components().addSecuritySchemes(TWITCH_OAUTH_SCHEME, twitchOAuthScheme()))
-                .addSecurityItem(new SecurityRequirement().addList(TWITCH_OAUTH_SCHEME))
-                .info(new Info()
-                        .title("Imgfloat API")
-                        .description("OpenAPI documentation for Imgfloat admin and broadcaster APIs.")
-                        .version("v1"));
+            .components(new Components().addSecuritySchemes(TWITCH_OAUTH_SCHEME, twitchOAuthScheme()))
+            .addSecurityItem(new SecurityRequirement().addList(TWITCH_OAUTH_SCHEME))
+            .info(
+                new Info()
+                    .title("Imgfloat API")
+                    .description("OpenAPI documentation for Imgfloat admin and broadcaster APIs.")
+                    .version("v1")
+            );
     }
 
     private SecurityScheme twitchOAuthScheme() {
         return new SecurityScheme()
-                .name(TWITCH_OAUTH_SCHEME)
-                .type(SecurityScheme.Type.OAUTH2)
-                .flows(new OAuthFlows()
-                        .authorizationCode(new OAuthFlow()
-                                .authorizationUrl("https://id.twitch.tv/oauth2/authorize")
-                                .tokenUrl("https://id.twitch.tv/oauth2/token")));
+            .name(TWITCH_OAUTH_SCHEME)
+            .type(SecurityScheme.Type.OAUTH2)
+            .flows(
+                new OAuthFlows().authorizationCode(
+                    new OAuthFlow()
+                        .authorizationUrl("https://id.twitch.tv/oauth2/authorize")
+                        .tokenUrl("https://id.twitch.tv/oauth2/token")
+                )
+            );
     }
 }

src/main/java/dev/kruhlmann/imgfloat/config/SQLiteOAuth2AuthorizedClientService.java

@@ -5,7 +5,8 @@ import java.time.Instant;
 import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
-
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.dao.DataAccessException;
 import org.springframework.jdbc.core.JdbcOperations;
 import org.springframework.jdbc.core.RowMapper;
@@ -18,6 +19,7 @@ import org.springframework.security.oauth2.core.OAuth2AccessToken;
 import org.springframework.security.oauth2.core.OAuth2RefreshToken;
 
 public class SQLiteOAuth2AuthorizedClientService implements OAuth2AuthorizedClientService {
+
     private static final Logger LOG = LoggerFactory.getLogger(SQLiteOAuth2AuthorizedClientService.class);
     private static final String TABLE_NAME = "oauth2_authorized_client";
 
@@ -25,8 +27,10 @@ public class SQLiteOAuth2AuthorizedClientService implements OAuth2AuthorizedClie
     private final ClientRegistrationRepository clientRegistrationRepository;
     private final RowMapper<OAuth2AuthorizedClient> rowMapper;
 
-    public SQLiteOAuth2AuthorizedClientService(JdbcOperations jdbcOperations,
-                                               ClientRegistrationRepository clientRegistrationRepository) {
+    public SQLiteOAuth2AuthorizedClientService(
+        JdbcOperations jdbcOperations,
+        ClientRegistrationRepository clientRegistrationRepository
+    ) {
         this.jdbcOperations = jdbcOperations;
         this.clientRegistrationRepository = clientRegistrationRepository;
         this.rowMapper = (rs, rowNum) -> {
@@ -38,35 +42,37 @@ public class SQLiteOAuth2AuthorizedClientService implements OAuth2AuthorizedClie
             }
 
             OAuth2AccessToken accessToken = new OAuth2AccessToken(
-                    OAuth2AccessToken.TokenType.BEARER,
-                    rs.getString("access_token_value"),
-                    toInstant(rs.getObject("access_token_issued_at")),
-                    toInstant(rs.getObject("access_token_expires_at")),
-                    scopesFrom(rs.getString("access_token_scopes"))
+                OAuth2AccessToken.TokenType.BEARER,
+                rs.getString("access_token_value"),
+                toInstant(rs.getObject("access_token_issued_at")),
+                toInstant(rs.getObject("access_token_expires_at")),
+                scopesFrom(rs.getString("access_token_scopes"))
             );
 
             Object refreshValue = rs.getObject("refresh_token_value");
             OAuth2RefreshToken refreshToken = refreshValue == null
-                    ? null
-                    : new OAuth2RefreshToken(
-                        refreshValue.toString(),
-                        toInstant(rs.getObject("refresh_token_issued_at"))
-                    );
+                ? null
+                : new OAuth2RefreshToken(refreshValue.toString(), toInstant(rs.getObject("refresh_token_issued_at")));
 
             return new OAuth2AuthorizedClient(registration, principalName, accessToken, refreshToken);
         };
     }
 
     @Override
-    public <T extends OAuth2AuthorizedClient> T loadAuthorizedClient(String clientRegistrationId, String principalName) {
+    public <T extends OAuth2AuthorizedClient> T loadAuthorizedClient(
+        String clientRegistrationId,
+        String principalName
+    ) {
         return jdbcOperations.query(
-                "SELECT client_registration_id, principal_name, access_token_value, access_token_issued_at, access_token_expires_at, access_token_scopes, refresh_token_value, refresh_token_issued_at " +
-                        "FROM " + TABLE_NAME + " WHERE client_registration_id = ? AND principal_name = ?",
-                ps -> {
-                    ps.setString(1, clientRegistrationId);
-                    ps.setString(2, principalName);
-                },
-                rs -> rs.next() ? (T) rowMapper.mapRow(rs, 0) : null
+            "SELECT client_registration_id, principal_name, access_token_value, access_token_issued_at, access_token_expires_at, access_token_scopes, refresh_token_value, refresh_token_issued_at " +
+                "FROM " +
+                TABLE_NAME +
+                " WHERE client_registration_id = ? AND principal_name = ?",
+            (ps) -> {
+                ps.setString(1, clientRegistrationId);
+                ps.setString(2, principalName);
+            },
+            (rs) -> rs.next() ? (T) rowMapper.mapRow(rs, 0) : null
         );
     }
 
@@ -74,51 +80,60 @@ public class SQLiteOAuth2AuthorizedClientService implements OAuth2AuthorizedClie
     public void saveAuthorizedClient(OAuth2AuthorizedClient authorizedClient, Authentication principal) {
         try {
             jdbcOperations.update("""
-                    INSERT INTO oauth2_authorized_client (
-                        client_registration_id, principal_name,
-                        access_token_value, access_token_issued_at, access_token_expires_at, access_token_scopes,
-                        refresh_token_value, refresh_token_issued_at
-                    ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
-                    ON CONFLICT(client_registration_id, principal_name) DO UPDATE SET
-                        access_token_value=excluded.access_token_value,
-                        access_token_issued_at=excluded.access_token_issued_at,
-                        access_token_expires_at=excluded.access_token_expires_at,
-                        access_token_scopes=excluded.access_token_scopes,
-                        refresh_token_value=excluded.refresh_token_value,
-                        refresh_token_issued_at=excluded.refresh_token_issued_at
-                    """,
-                    preparedStatement -> {
-                        preparedStatement.setString(1, authorizedClient.getClientRegistration().getRegistrationId());
-                        preparedStatement.setString(2, principal.getName());
-                        setToken(preparedStatement, 3, authorizedClient.getAccessToken());
-                        preparedStatement.setObject(5, toEpochMillis(authorizedClient.getAccessToken().getExpiresAt()), java.sql.Types.BIGINT);
-                        preparedStatement.setString(6, scopesToString(authorizedClient.getAccessToken().getScopes()));
-                        OAuth2RefreshToken refreshToken = authorizedClient.getRefreshToken();
-                        if (refreshToken != null) {
-                            preparedStatement.setString(7, refreshToken.getTokenValue());
-                            preparedStatement.setObject(8, toEpochMillis(refreshToken.getIssuedAt()), java.sql.Types.BIGINT);
-                        } else {
-                            preparedStatement.setNull(7, java.sql.Types.VARCHAR);
-                            preparedStatement.setNull(8, java.sql.Types.BIGINT);
-                        }
-                    });
+            INSERT INTO oauth2_authorized_client (
+                client_registration_id, principal_name,
+                access_token_value, access_token_issued_at, access_token_expires_at, access_token_scopes,
+                refresh_token_value, refresh_token_issued_at
+            ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+            ON CONFLICT(client_registration_id, principal_name) DO UPDATE SET
+                access_token_value=excluded.access_token_value,
+                access_token_issued_at=excluded.access_token_issued_at,
+                access_token_expires_at=excluded.access_token_expires_at,
+                access_token_scopes=excluded.access_token_scopes,
+                refresh_token_value=excluded.refresh_token_value,
+                refresh_token_issued_at=excluded.refresh_token_issued_at
+            """, (preparedStatement) -> {
+                preparedStatement.setString(1, authorizedClient.getClientRegistration().getRegistrationId());
+                preparedStatement.setString(2, principal.getName());
+                setToken(preparedStatement, 3, authorizedClient.getAccessToken());
+                preparedStatement.setObject(
+                    5,
+                    toEpochMillis(authorizedClient.getAccessToken().getExpiresAt()),
+                    java.sql.Types.BIGINT
+                );
+                preparedStatement.setString(6, scopesToString(authorizedClient.getAccessToken().getScopes()));
+                OAuth2RefreshToken refreshToken = authorizedClient.getRefreshToken();
+                if (refreshToken != null) {
+                    preparedStatement.setString(7, refreshToken.getTokenValue());
+                    preparedStatement.setObject(8, toEpochMillis(refreshToken.getIssuedAt()), java.sql.Types.BIGINT);
+                } else {
+                    preparedStatement.setNull(7, java.sql.Types.VARCHAR);
+                    preparedStatement.setNull(8, java.sql.Types.BIGINT);
+                }
+            });
         } catch (DataAccessException ex) {
-            LOG.error("Failed to save authorized client for registration ID '{}' and principal '{}'",
-                    authorizedClient.getClientRegistration().getRegistrationId(),
-                    principal.getName(), ex);
+            LOG.error(
+                "Failed to save authorized client for registration ID '{}' and principal '{}'",
+                authorizedClient.getClientRegistration().getRegistrationId(),
+                principal.getName(),
+                ex
+            );
         }
     }
 
     @Override
     public void removeAuthorizedClient(String clientRegistrationId, String principalName) {
-        jdbcOperations.update("DELETE FROM " + TABLE_NAME + " WHERE client_registration_id = ? AND principal_name = ?",
-                preparedStatement -> {
-                    preparedStatement.setString(1, clientRegistrationId);
-                    preparedStatement.setString(2, principalName);
-                });
+        jdbcOperations.update(
+            "DELETE FROM " + TABLE_NAME + " WHERE client_registration_id = ? AND principal_name = ?",
+            (preparedStatement) -> {
+                preparedStatement.setString(1, clientRegistrationId);
+                preparedStatement.setString(2, principalName);
+            }
+        );
     }
 
-    private void setToken(java.sql.PreparedStatement ps, int startIndex, OAuth2AccessToken token) throws java.sql.SQLException {
+    private void setToken(java.sql.PreparedStatement ps, int startIndex, OAuth2AccessToken token)
+        throws java.sql.SQLException {
         ps.setString(startIndex, token.getTokenValue());
         ps.setObject(startIndex + 1, toEpochMillis(token.getIssuedAt()), java.sql.Types.BIGINT);
     }
@@ -151,9 +166,9 @@ public class SQLiteOAuth2AuthorizedClientService implements OAuth2AuthorizedClie
             return Set.of();
         }
         return Stream.of(scopeString.split(" "))
-                .map(String::trim)
-                .filter(s -> !s.isEmpty())
-                .collect(Collectors.toSet());
+            .map(String::trim)
+            .filter((s) -> !s.isEmpty())
+            .collect(Collectors.toSet());
     }
 
     private String scopesToString(Set<String> scopes) {

src/main/java/dev/kruhlmann/imgfloat/config/SchemaMigration.java

@@ -1,5 +1,6 @@
 package dev.kruhlmann.imgfloat.config;
 
+import java.util.List;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.ApplicationArguments;
@@ -8,8 +9,6 @@ import org.springframework.dao.DataAccessException;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.stereotype.Component;
 
-import java.util.List;
-
 @Component
 public class SchemaMigration implements ApplicationRunner {
 
@@ -32,7 +31,8 @@ public class SchemaMigration implements ApplicationRunner {
 
     private void ensureSessionAttributeUpsertTrigger() {
         try {
-            jdbcTemplate.execute("""
+            jdbcTemplate.execute(
+                """
                 CREATE TRIGGER IF NOT EXISTS SPRING_SESSION_ATTRIBUTES_UPSERT
                 BEFORE INSERT ON SPRING_SESSION_ATTRIBUTES
                 FOR EACH ROW
@@ -41,7 +41,8 @@ public class SchemaMigration implements ApplicationRunner {
                     WHERE SESSION_PRIMARY_ID = NEW.SESSION_PRIMARY_ID
                       AND ATTRIBUTE_NAME = NEW.ATTRIBUTE_NAME;
                 END;
-                """);
+                """
+            );
             logger.info("Ensured SPRING_SESSION_ATTRIBUTES upsert trigger exists");
         } catch (DataAccessException ex) {
             logger.warn("Unable to ensure SPRING_SESSION_ATTRIBUTES upsert trigger", ex);
@@ -91,14 +92,32 @@ public class SchemaMigration implements ApplicationRunner {
         addColumnIfMissing(table, columns, "preview", "TEXT", "NULL");
     }
 
-    private void addColumnIfMissing(String tableName, List<String> existingColumns, String columnName, String dataType, String defaultValue) {
+    private void addColumnIfMissing(
+        String tableName,
+        List<String> existingColumns,
+        String columnName,
+        String dataType,
+        String defaultValue
+    ) {
         if (existingColumns.contains(columnName)) {
             return;
         }
 
         try {
-            jdbcTemplate.execute("ALTER TABLE " + tableName + " ADD COLUMN " + columnName + " " + dataType + " DEFAULT " + defaultValue);
-            jdbcTemplate.execute("UPDATE " + tableName + " SET " + columnName + " = " + defaultValue + " WHERE " + columnName + " IS NULL");
+            jdbcTemplate.execute(
+                "ALTER TABLE " + tableName + " ADD COLUMN " + columnName + " " + dataType + " DEFAULT " + defaultValue
+            );
+            jdbcTemplate.execute(
+                "UPDATE " +
+                    tableName +
+                    " SET " +
+                    columnName +
+                    " = " +
+                    defaultValue +
+                    " WHERE " +
+                    columnName +
+                    " IS NULL"
+            );
             logger.info("Added missing column '{}' to {} table", columnName, tableName);
         } catch (DataAccessException ex) {
             logger.warn("Failed to add column '{}' to {} table", columnName, tableName, ex);
@@ -107,7 +126,8 @@ public class SchemaMigration implements ApplicationRunner {
 
     private void ensureAuthorizedClientTable() {
         try {
-            jdbcTemplate.execute("""
+            jdbcTemplate.execute(
+                """
                 CREATE TABLE IF NOT EXISTS oauth2_authorized_client (
                     client_registration_id VARCHAR(100) NOT NULL,
                     principal_name VARCHAR(200) NOT NULL,
@@ -120,7 +140,8 @@ public class SchemaMigration implements ApplicationRunner {
                     refresh_token_issued_at INTEGER,
                     PRIMARY KEY (client_registration_id, principal_name)
                 )
-                """);
+                """
+            );
             logger.info("Ensured oauth2_authorized_client table exists");
         } catch (DataAccessException ex) {
             logger.warn("Unable to ensure oauth2_authorized_client table", ex);
@@ -136,13 +157,34 @@ public class SchemaMigration implements ApplicationRunner {
     private void normalizeTimestampColumn(String column) {
         try {
             int updated = jdbcTemplate.update(
-                    "UPDATE oauth2_authorized_client " +
-                            "SET " + column + " = CASE " +
-                            "WHEN " + column + " LIKE '%-%' THEN CAST(strftime('%s', " + column + ") AS INTEGER) * 1000 " +
-                            "WHEN typeof(" + column + ") = 'text' AND " + column + " GLOB '[0-9]*' THEN CAST(" + column + " AS INTEGER) " +
-                            "WHEN typeof(" + column + ") = 'integer' THEN " + column + " " +
-                            "ELSE " + column + " END " +
-                            "WHERE " + column + " IS NOT NULL");
+                "UPDATE oauth2_authorized_client " +
+                    "SET " +
+                    column +
+                    " = CASE " +
+                    "WHEN " +
+                    column +
+                    " LIKE '%-%' THEN CAST(strftime('%s', " +
+                    column +
+                    ") AS INTEGER) * 1000 " +
+                    "WHEN typeof(" +
+                    column +
+                    ") = 'text' AND " +
+                    column +
+                    " GLOB '[0-9]*' THEN CAST(" +
+                    column +
+                    " AS INTEGER) " +
+                    "WHEN typeof(" +
+                    column +
+                    ") = 'integer' THEN " +
+                    column +
+                    " " +
+                    "ELSE " +
+                    column +
+                    " END " +
+                    "WHERE " +
+                    column +
+                    " IS NOT NULL"
+            );
             if (updated > 0) {
                 logger.info("Normalized {} rows in oauth2_authorized_client.{}", updated, column);
             }

src/main/java/dev/kruhlmann/imgfloat/config/SecurityConfig.java

@@ -3,6 +3,7 @@ package dev.kruhlmann.imgfloat.config;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
 import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
@@ -14,7 +15,6 @@ import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.HttpStatusEntryPoint;
 import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.web.client.RestTemplate;
-import org.springframework.http.HttpStatus;
 
 @Configuration
 @EnableWebSecurity
@@ -22,11 +22,14 @@ import org.springframework.http.HttpStatus;
 public class SecurityConfig {
 
     @Bean
-    SecurityFilterChain securityFilterChain(HttpSecurity http,
-                                            OAuth2AuthorizedClientRepository authorizedClientRepository) throws Exception {
+    SecurityFilterChain securityFilterChain(
+        HttpSecurity http,
+        OAuth2AuthorizedClientRepository authorizedClientRepository
+    ) throws Exception {
         http
-            .authorizeHttpRequests(auth -> auth
-                .requestMatchers(
+            .authorizeHttpRequests((auth) ->
+                auth
+                    .requestMatchers(
                         "/",
                         "/favicon.ico",
                         "/img/**",
@@ -38,26 +41,37 @@ public class SecurityConfig {
                         "/swagger-ui.html",
                         "/swagger-ui/**",
                         "/channels"
-                ).permitAll()
-                .requestMatchers(HttpMethod.GET, "/view/*/broadcast").permitAll()
-                .requestMatchers(HttpMethod.GET, "/api/channels").permitAll()
-                .requestMatchers(HttpMethod.GET, "/api/channels/*/assets/visible").permitAll()
-                .requestMatchers(HttpMethod.GET, "/api/channels/*/canvas").permitAll()
-                .requestMatchers(HttpMethod.GET, "/api/channels/*/assets/*/content").permitAll()
-                .requestMatchers("/ws/**").permitAll()
-                .anyRequest().authenticated()
+                    )
+                    .permitAll()
+                    .requestMatchers(HttpMethod.GET, "/view/*/broadcast")
+                    .permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/channels")
+                    .permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/channels/*/assets/visible")
+                    .permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/channels/*/canvas")
+                    .permitAll()
+                    .requestMatchers(HttpMethod.GET, "/api/channels/*/assets/*/content")
+                    .permitAll()
+                    .requestMatchers("/ws/**")
+                    .permitAll()
+                    .anyRequest()
+                    .authenticated()
             )
-            .oauth2Login(oauth -> oauth
-                .authorizedClientRepository(authorizedClientRepository)
-                .tokenEndpoint(token -> token.accessTokenResponseClient(twitchAccessTokenResponseClient()))
-                .userInfoEndpoint(user -> user.userService(twitchOAuth2UserService())))
-            .logout(logout -> logout.logoutSuccessUrl("/").permitAll())
-            .exceptionHandling(exceptions -> exceptions
-                .defaultAuthenticationEntryPointFor(
+            .oauth2Login((oauth) ->
+                oauth
+                    .authorizedClientRepository(authorizedClientRepository)
+                    .tokenEndpoint((token) -> token.accessTokenResponseClient(twitchAccessTokenResponseClient()))
+                    .userInfoEndpoint((user) -> user.userService(twitchOAuth2UserService()))
+            )
+            .logout((logout) -> logout.logoutSuccessUrl("/").permitAll())
+            .exceptionHandling((exceptions) ->
+                exceptions.defaultAuthenticationEntryPointFor(
                     new HttpStatusEntryPoint(HttpStatus.UNAUTHORIZED),
                     new AntPathRequestMatcher("/api/**")
-                ))
-            .csrf(csrf -> csrf.ignoringRequestMatchers("/ws/**", "/api/**"));
+                )
+            )
+            .csrf((csrf) -> csrf.ignoringRequestMatchers("/ws/**", "/api/**"));
         return http.build();
     }
 

src/main/java/dev/kruhlmann/imgfloat/config/SystemEnvironmentValidator.java

@@ -4,31 +4,39 @@ import jakarta.annotation.PostConstruct;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.env.Environment;
 import org.springframework.stereotype.Component;
 import org.springframework.util.StringUtils;
 import org.springframework.util.unit.DataSize;
-import org.springframework.core.env.Environment;
 
 @Component
 public class SystemEnvironmentValidator {
+
     private static final Logger log = LoggerFactory.getLogger(SystemEnvironmentValidator.class);
 
     private final Environment environment;
 
     @Value("${spring.security.oauth2.client.registration.twitch.client-id:#{null}}")
     private String twitchClientId;
+
     @Value("${spring.security.oauth2.client.registration.twitch.client-secret:#{null}}")
     private String twitchClientSecret;
+
     @Value("${spring.servlet.multipart.max-file-size:#{null}}")
     private String springMaxFileSize;
+
     @Value("${spring.servlet.multipart.max-request-size:#{null}}")
     private String springMaxRequestSize;
+
     @Value("${IMGFLOAT_ASSETS_PATH:#{null}}")
     private String assetsPath;
+
     @Value("${IMGFLOAT_PREVIEWS_PATH:#{null}}")
     private String previewsPath;
+
     @Value("${IMGFLOAT_DB_PATH:#{null}}")
     private String dbPath;
+
     @Value("${IMGFLOAT_INITIAL_TWITCH_USERNAME_SYSADMIN:#{null}}")
     private String initialSysadmin;
 
@@ -41,7 +49,11 @@ public class SystemEnvironmentValidator {
 
     @PostConstruct
     public void validate() {
-        if (Boolean.parseBoolean(environment.getProperty("org.springframework.boot.test.context.SpringBootTestContextBootstrapper"))) {
+        if (
+            Boolean.parseBoolean(
+                environment.getProperty("org.springframework.boot.test.context.SpringBootTestContextBootstrapper")
+            )
+        ) {
             log.info("Skipping environment validation in test context");
             return;
         }
@@ -60,9 +72,7 @@ public class SystemEnvironmentValidator {
         checkString(previewsPath, "IMGFLOAT_PREVIEWS_PATH", missing);
 
         if (!missing.isEmpty()) {
-            throw new IllegalStateException(
-                "Missing or invalid environment variables:\n" + missing
-            );
+            throw new IllegalStateException("Missing or invalid environment variables:\n" + missing);
         }
 
         log.info("Environment validation successful:");
@@ -93,7 +103,7 @@ public class SystemEnvironmentValidator {
     private String redact(String value) {
         if (value != null && StringUtils.hasText(value)) {
             return "**************";
-        };
+        }
         return "<not set>";
     }
 }

src/main/java/dev/kruhlmann/imgfloat/config/TwitchAuthorizationCodeGrantRequestEntityConverter.java

@@ -3,7 +3,6 @@ package dev.kruhlmann.imgfloat.config;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.List;
-
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.RequestEntity;
@@ -19,11 +18,11 @@ import org.springframework.util.MultiValueMap;
  * request body. Twitch ignores HTTP Basic authentication and responds with "missing client id" if
  * those parameters are absent.
  */
-final class TwitchAuthorizationCodeGrantRequestEntityConverter implements
-        Converter<OAuth2AuthorizationCodeGrantRequest, RequestEntity<?>> {
+final class TwitchAuthorizationCodeGrantRequestEntityConverter
+    implements Converter<OAuth2AuthorizationCodeGrantRequest, RequestEntity<?>> {
 
     private final Converter<OAuth2AuthorizationCodeGrantRequest, RequestEntity<?>> delegate =
-            new OAuth2AuthorizationCodeGrantRequestEntityConverter();
+        new OAuth2AuthorizationCodeGrantRequestEntityConverter();
 
     @Override
     public RequestEntity<?> convert(OAuth2AuthorizationCodeGrantRequest request) {
@@ -50,8 +49,7 @@ final class TwitchAuthorizationCodeGrantRequestEntityConverter implements
 
     private MultiValueMap<String, String> cloneBody(MultiValueMap<?, ?> existingBody) {
         MultiValueMap<String, String> copy = new LinkedMultiValueMap<>();
-        existingBody.forEach((key, value) ->
-                copy.put(String.valueOf(key), new ArrayList<>((List<String>) value)));
+        existingBody.forEach((key, value) -> copy.put(String.valueOf(key), new ArrayList<>((List<String>) value)));
         return copy;
     }
 }

src/main/java/dev/kruhlmann/imgfloat/config/TwitchClientRegistrationConfig.java

@@ -3,7 +3,6 @@ package dev.kruhlmann.imgfloat.config;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2ClientProperties;
@@ -24,6 +23,7 @@ import org.springframework.security.oauth2.core.ClientAuthenticationMethod;
 @Configuration
 @EnableConfigurationProperties(OAuth2ClientProperties.class)
 class TwitchClientRegistrationConfig {
+
     private static final Logger LOG = LoggerFactory.getLogger(TwitchClientRegistrationConfig.class);
 
     @Bean
@@ -37,7 +37,8 @@ class TwitchClientRegistrationConfig {
             OAuth2ClientProperties.Provider provider = properties.getProvider().get(providerId);
             if (provider == null) {
                 throw new IllegalStateException(
-                        "Missing OAuth2 provider configuration for registration '" + registrationId + "'.");
+                    "Missing OAuth2 provider configuration for registration '" + registrationId + "'."
+                );
             }
             if (!"twitch".equals(registrationId)) {
                 LOG.warn("Unexpected OAuth2 registration '{}' found; only Twitch is supported.", registrationId);
@@ -49,24 +50,25 @@ class TwitchClientRegistrationConfig {
     }
 
     private ClientRegistration buildTwitchRegistration(
-            String registrationId,
-            OAuth2ClientProperties.Registration registration,
-            OAuth2ClientProperties.Provider provider) {
+        String registrationId,
+        OAuth2ClientProperties.Registration registration,
+        OAuth2ClientProperties.Provider provider
+    ) {
         String clientId = sanitize(registration.getClientId(), "TWITCH_CLIENT_ID");
         String clientSecret = sanitize(registration.getClientSecret(), "TWITCH_CLIENT_SECRET");
         return ClientRegistration.withRegistrationId(registrationId)
-                .clientName(registration.getClientName())
-                .clientId(clientId)
-                .clientSecret(clientSecret)
-                .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
-                .authorizationGrantType(new AuthorizationGrantType(registration.getAuthorizationGrantType()))
-                .redirectUri(registration.getRedirectUri())
-                .scope(registration.getScope())
-                .authorizationUri(provider.getAuthorizationUri())
-                .tokenUri(provider.getTokenUri())
-                .userInfoUri(provider.getUserInfoUri())
-                .userNameAttributeName(provider.getUserNameAttribute())
-                .build();
+            .clientName(registration.getClientName())
+            .clientId(clientId)
+            .clientSecret(clientSecret)
+            .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
+            .authorizationGrantType(new AuthorizationGrantType(registration.getAuthorizationGrantType()))
+            .redirectUri(registration.getRedirectUri())
+            .scope(registration.getScope())
+            .authorizationUri(provider.getAuthorizationUri())
+            .tokenUri(provider.getTokenUri())
+            .userInfoUri(provider.getUserInfoUri())
+            .userNameAttributeName(provider.getUserNameAttribute())
+            .build();
     }
 
     private String sanitize(String value, String name) {
@@ -74,7 +76,9 @@ class TwitchClientRegistrationConfig {
             return null;
         }
         String trimmed = value.trim();
-        if ((trimmed.startsWith("\"") && trimmed.endsWith("\"")) || (trimmed.startsWith("'") && trimmed.endsWith("'"))) {
+        if (
+            (trimmed.startsWith("\"") && trimmed.endsWith("\"")) || (trimmed.startsWith("'") && trimmed.endsWith("'"))
+        ) {
             String unquoted = trimmed.substring(1, trimmed.length() - 1).trim();
             LOG.info("Sanitizing {} by stripping surrounding quotes.", name);
             return unquoted;

src/main/java/dev/kruhlmann/imgfloat/config/TwitchOAuth2ErrorResponseErrorHandler.java

@@ -1,9 +1,8 @@
 package dev.kruhlmann.imgfloat.config;
 
-import java.io.IOException;
 import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.client.ClientHttpResponse;
@@ -31,20 +30,24 @@ class TwitchOAuth2ErrorResponseErrorHandler extends OAuth2ErrorResponseErrorHand
         String body = new String(bodyBytes, StandardCharsets.UTF_8);
 
         if (body.isBlank()) {
-            LOG.warn("Failed to parse Twitch OAuth error response (status: {}, headers: {}): <empty body>",
-                    response.getStatusCode(),
-                    response.getHeaders());
+            LOG.warn(
+                "Failed to parse Twitch OAuth error response (status: {}, headers: {}): <empty body>",
+                response.getStatusCode(),
+                response.getHeaders()
+            );
             throw asAuthorizationException(body, null);
         }
 
         try {
             super.handleError(new CachedBodyClientHttpResponse(response, bodyBytes));
         } catch (HttpMessageNotReadableException | IllegalArgumentException ex) {
-            LOG.warn("Failed to parse Twitch OAuth error response (status: {}, headers: {}): {}",
-                    response.getStatusCode(),
-                    response.getHeaders(),
-                    body,
-                    ex);
+            LOG.warn(
+                "Failed to parse Twitch OAuth error response (status: {}, headers: {}): {}",
+                response.getStatusCode(),
+                response.getHeaders(),
+                body,
+                ex
+            );
             throw asAuthorizationException(body, ex);
         }
     }

src/main/java/dev/kruhlmann/imgfloat/config/TwitchOAuth2UserService.java

@@ -5,7 +5,6 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.function.Function;
-
 import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.client.ClientHttpRequestInterceptor;
 import org.springframework.http.client.SimpleClientHttpRequestFactory;
@@ -46,18 +45,19 @@ class TwitchOAuth2UserService implements OAuth2UserService<OAuth2UserRequest, OA
 
     private OAuth2UserRequest twitchUserRequest(OAuth2UserRequest userRequest) {
         return new OAuth2UserRequest(
-                twitchUserRegistration(userRequest),
-                userRequest.getAccessToken(),
-                userRequest.getAdditionalParameters());
+            twitchUserRegistration(userRequest),
+            userRequest.getAccessToken(),
+            userRequest.getAdditionalParameters()
+        );
     }
 
     private ClientRegistration twitchUserRegistration(OAuth2UserRequest userRequest) {
         ClientRegistration registration = userRequest.getClientRegistration();
         return ClientRegistration.withClientRegistration(registration)
-                // The Twitch response nests user details under a "data" array, so accept that
-                // shape for the initial parsing step.
-                .userNameAttributeName("data")
-                .build();
+            // The Twitch response nests user details under a "data" array, so accept that
+            // shape for the initial parsing step.
+            .userNameAttributeName("data")
+            .build();
     }
 
     @SuppressWarnings("unchecked")

src/main/java/dev/kruhlmann/imgfloat/config/UploadLimitsConfig.java

@@ -35,6 +35,8 @@ public class UploadLimitsConfig {
     }
 
     private boolean isTestContext() {
-        return Boolean.parseBoolean(environment.getProperty("org.springframework.boot.test.context.SpringBootTestContextBootstrapper"));
+        return Boolean.parseBoolean(
+            environment.getProperty("org.springframework.boot.test.context.SpringBootTestContextBootstrapper")
+        );
     }
 }

src/main/java/dev/kruhlmann/imgfloat/config/WebSocketConfig.java

@@ -9,6 +9,7 @@ import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerCo
 @Configuration
 @EnableWebSocketMessageBroker
 public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
+
     @Override
     public void registerStompEndpoints(StompEndpointRegistry registry) {
         registry.addEndpoint("/ws").setAllowedOriginPatterns("*").withSockJS();

src/main/java/dev/kruhlmann/imgfloat/controller/ChannelApiController.java

@@ -1,18 +1,28 @@
 package dev.kruhlmann.imgfloat.controller;
 
+import static org.springframework.http.HttpStatus.BAD_REQUEST;
+import static org.springframework.http.HttpStatus.FORBIDDEN;
+import static org.springframework.http.HttpStatus.NOT_FOUND;
+
 import dev.kruhlmann.imgfloat.model.AdminRequest;
 import dev.kruhlmann.imgfloat.model.AssetView;
 import dev.kruhlmann.imgfloat.model.CanvasSettingsRequest;
+import dev.kruhlmann.imgfloat.model.OauthSessionUser;
 import dev.kruhlmann.imgfloat.model.PlaybackRequest;
 import dev.kruhlmann.imgfloat.model.TransformRequest;
 import dev.kruhlmann.imgfloat.model.TwitchUserProfile;
 import dev.kruhlmann.imgfloat.model.VisibilityRequest;
-import dev.kruhlmann.imgfloat.model.OauthSessionUser;
+import dev.kruhlmann.imgfloat.service.AuthorizationService;
 import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
 import dev.kruhlmann.imgfloat.service.TwitchUserLookupService;
-import dev.kruhlmann.imgfloat.service.AuthorizationService;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import jakarta.servlet.http.HttpServletRequest;
 import jakarta.validation.Valid;
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Optional;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpHeaders;
@@ -30,25 +40,14 @@ import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.server.ResponseStatusException;
 import org.springframework.web.multipart.MultipartFile;
-
-import jakarta.servlet.http.HttpServletRequest;
-
-import java.util.Collection;
-import java.io.IOException;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Optional;
-
-import static org.springframework.http.HttpStatus.FORBIDDEN;
-import static org.springframework.http.HttpStatus.NOT_FOUND;
-import static org.springframework.http.HttpStatus.BAD_REQUEST;
+import org.springframework.web.server.ResponseStatusException;
 
 @RestController
 @RequestMapping("/api/channels/{broadcaster}")
 @SecurityRequirement(name = "twitchOAuth")
 public class ChannelApiController {
+
     private static final Logger LOG = LoggerFactory.getLogger(ChannelApiController.class);
     private final ChannelDirectoryService channelDirectoryService;
     private final OAuth2AuthorizedClientService authorizedClientService;
@@ -71,9 +70,11 @@ public class ChannelApiController {
     }
 
     @PostMapping("/admins")
-    public ResponseEntity<?> addAdmin(@PathVariable("broadcaster") String broadcaster,
-                                      @Valid @RequestBody AdminRequest request,
-                                      OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<?> addAdmin(
+        @PathVariable("broadcaster") String broadcaster,
+        @Valid @RequestBody AdminRequest request,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
         authorizationService.userMatchesSessionUsernameOrThrowHttpError(broadcaster, sessionUsername);
         LOG.info("User {} adding admin {} to {}", sessionUsername, request.getUsername(), broadcaster);
@@ -85,32 +86,34 @@ public class ChannelApiController {
     }
 
     @GetMapping("/admins")
-    public Collection<TwitchUserProfile> listAdmins(@PathVariable("broadcaster") String broadcaster,
-                                                    OAuth2AuthenticationToken oauthToken,
-                                                    HttpServletRequest request) {
+    public Collection<TwitchUserProfile> listAdmins(
+        @PathVariable("broadcaster") String broadcaster,
+        OAuth2AuthenticationToken oauthToken,
+        HttpServletRequest request
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
         authorizationService.userMatchesSessionUsernameOrThrowHttpError(broadcaster, sessionUsername);
         LOG.debug("Listing admins for {} by {}", broadcaster, sessionUsername);
         var channel = channelDirectoryService.getOrCreateChannel(broadcaster);
-        List<String> admins = channel.getAdmins().stream()
-                .sorted(Comparator.naturalOrder())
-                .toList();
+        List<String> admins = channel.getAdmins().stream().sorted(Comparator.naturalOrder()).toList();
         OAuth2AuthorizedClient authorizedClient = resolveAuthorizedClient(oauthToken, null, request);
         String accessToken = Optional.ofNullable(authorizedClient)
-                .map(OAuth2AuthorizedClient::getAccessToken)
-                .map(token -> token.getTokenValue())
-                .orElse(null);
+            .map(OAuth2AuthorizedClient::getAccessToken)
+            .map((token) -> token.getTokenValue())
+            .orElse(null);
         String clientId = Optional.ofNullable(authorizedClient)
-                .map(OAuth2AuthorizedClient::getClientRegistration)
-                .map(registration -> registration.getClientId())
-                .orElse(null);
+            .map(OAuth2AuthorizedClient::getClientRegistration)
+            .map((registration) -> registration.getClientId())
+            .orElse(null);
         return twitchUserLookupService.fetchProfiles(admins, accessToken, clientId);
     }
 
     @GetMapping("/admins/suggestions")
-    public Collection<TwitchUserProfile> listAdminSuggestions(@PathVariable("broadcaster") String broadcaster,
-                                                              OAuth2AuthenticationToken oauthToken,
-                                                              HttpServletRequest request) {
+    public Collection<TwitchUserProfile> listAdminSuggestions(
+        @PathVariable("broadcaster") String broadcaster,
+        OAuth2AuthenticationToken oauthToken,
+        HttpServletRequest request
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
         authorizationService.userMatchesSessionUsernameOrThrowHttpError(broadcaster, sessionUsername);
         LOG.debug("Listing admin suggestions for {} by {}", broadcaster, sessionUsername);
@@ -118,28 +121,38 @@ public class ChannelApiController {
         OAuth2AuthorizedClient authorizedClient = resolveAuthorizedClient(oauthToken, null, request);
 
         if (authorizedClient == null) {
-            LOG.warn("No authorized Twitch client found for {} while fetching admin suggestions for {}", sessionUsername, broadcaster);
+            LOG.warn(
+                "No authorized Twitch client found for {} while fetching admin suggestions for {}",
+                sessionUsername,
+                broadcaster
+            );
             return List.of();
         }
         String accessToken = Optional.ofNullable(authorizedClient)
-                .map(OAuth2AuthorizedClient::getAccessToken)
-                .map(token -> token.getTokenValue())
-                .orElse(null);
+            .map(OAuth2AuthorizedClient::getAccessToken)
+            .map((token) -> token.getTokenValue())
+            .orElse(null);
         String clientId = Optional.ofNullable(authorizedClient)
-                .map(OAuth2AuthorizedClient::getClientRegistration)
-                .map(registration -> registration.getClientId())
-                .orElse(null);
+            .map(OAuth2AuthorizedClient::getClientRegistration)
+            .map((registration) -> registration.getClientId())
+            .orElse(null);
         if (accessToken == null || accessToken.isBlank() || clientId == null || clientId.isBlank()) {
-            LOG.warn("Missing Twitch credentials for {} while fetching admin suggestions for {}", sessionUsername, broadcaster);
+            LOG.warn(
+                "Missing Twitch credentials for {} while fetching admin suggestions for {}",
+                sessionUsername,
+                broadcaster
+            );
             return List.of();
         }
         return twitchUserLookupService.fetchModerators(broadcaster, channel.getAdmins(), accessToken, clientId);
     }
 
     @DeleteMapping("/admins/{username}")
-    public ResponseEntity<?> removeAdmin(@PathVariable("broadcaster") String broadcaster,
-                                         @PathVariable("username") String username,
-                                        OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<?> removeAdmin(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("username") String username,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
         authorizationService.userMatchesSessionUsernameOrThrowHttpError(broadcaster, sessionUsername);
         LOG.info("User {} removing admin {} from {}", sessionUsername, username, broadcaster);
@@ -163,30 +176,44 @@ public class ChannelApiController {
     }
 
     @PutMapping("/canvas")
-    public CanvasSettingsRequest updateCanvas(@PathVariable("broadcaster") String broadcaster,
-                                              @Valid @RequestBody CanvasSettingsRequest request,
-                                              OAuth2AuthenticationToken oauthToken) {
+    public CanvasSettingsRequest updateCanvas(
+        @PathVariable("broadcaster") String broadcaster,
+        @Valid @RequestBody CanvasSettingsRequest request,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
         authorizationService.userMatchesSessionUsernameOrThrowHttpError(broadcaster, sessionUsername);
-        LOG.info("Updating canvas for {} by {}: {}x{}", broadcaster, sessionUsername, request.getWidth(), request.getHeight());
+        LOG.info(
+            "Updating canvas for {} by {}: {}x{}",
+            broadcaster,
+            sessionUsername,
+            request.getWidth(),
+            request.getHeight()
+        );
         return channelDirectoryService.updateCanvasSettings(broadcaster, request);
     }
 
     @PostMapping(value = "/assets", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
-    public ResponseEntity<AssetView> createAsset(@PathVariable("broadcaster") String broadcaster,
-                                             @org.springframework.web.bind.annotation.RequestPart("file") MultipartFile file,
-                                             OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<AssetView> createAsset(
+        @PathVariable("broadcaster") String broadcaster,
+        @org.springframework.web.bind.annotation.RequestPart("file") MultipartFile file,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
-        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(broadcaster, sessionUsername);
+        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+            broadcaster,
+            sessionUsername
+        );
         if (file == null || file.isEmpty()) {
             LOG.warn("User {} attempted to upload empty file to {}", sessionUsername, broadcaster);
             throw new ResponseStatusException(BAD_REQUEST, "Asset file is required");
         }
         try {
             LOG.info("User {} uploading asset {} to {}", sessionUsername, file.getOriginalFilename(), broadcaster);
-            return channelDirectoryService.createAsset(broadcaster, file)
-                    .map(ResponseEntity::ok)
-                    .orElseThrow(() -> new ResponseStatusException(BAD_REQUEST, "Unable to read image"));
+            return channelDirectoryService
+                .createAsset(broadcaster, file)
+                .map(ResponseEntity::ok)
+                .orElseThrow(() -> new ResponseStatusException(BAD_REQUEST, "Unable to read image"));
         } catch (IOException e) {
             LOG.error("Failed to process asset upload for {} by {}", broadcaster, sessionUsername, e);
             throw new ResponseStatusException(BAD_REQUEST, "Failed to process image", e);
@@ -194,88 +221,130 @@ public class ChannelApiController {
     }
 
     @PutMapping("/assets/{assetId}/transform")
-    public ResponseEntity<AssetView> transform(@PathVariable("broadcaster") String broadcaster,
-                                               @PathVariable("assetId") String assetId,
-                                               @Valid @RequestBody TransformRequest request,
-                                               OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<AssetView> transform(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("assetId") String assetId,
+        @Valid @RequestBody TransformRequest request,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
-        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(broadcaster, sessionUsername);
+        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+            broadcaster,
+            sessionUsername
+        );
         LOG.debug("Applying transform to asset {} on {} by {}", assetId, broadcaster, sessionUsername);
-        return channelDirectoryService.updateTransform(broadcaster, assetId, request)
-                .map(ResponseEntity::ok)
-                .orElseThrow(() -> {
-                    LOG.warn("Transform request for missing asset {} on {} by {}", assetId, broadcaster, sessionUsername);
-                    return new ResponseStatusException(NOT_FOUND, "Asset not found");
-                });
+        return channelDirectoryService
+            .updateTransform(broadcaster, assetId, request)
+            .map(ResponseEntity::ok)
+            .orElseThrow(() -> {
+                LOG.warn("Transform request for missing asset {} on {} by {}", assetId, broadcaster, sessionUsername);
+                return new ResponseStatusException(NOT_FOUND, "Asset not found");
+            });
     }
 
     @PostMapping("/assets/{assetId}/play")
-    public ResponseEntity<AssetView> play(@PathVariable("broadcaster") String broadcaster,
-                                          @PathVariable("assetId") String assetId,
-                                          @RequestBody(required = false) PlaybackRequest request,
-                                          OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<AssetView> play(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("assetId") String assetId,
+        @RequestBody(required = false) PlaybackRequest request,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
-        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(broadcaster, sessionUsername);
+        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+            broadcaster,
+            sessionUsername
+        );
         LOG.info("Triggering playback for asset {} on {} by {}", assetId, broadcaster, sessionUsername);
-        return channelDirectoryService.triggerPlayback(broadcaster, assetId, request)
-                .map(ResponseEntity::ok)
-                .orElseThrow(() -> new ResponseStatusException(NOT_FOUND, "Asset not found"));
+        return channelDirectoryService
+            .triggerPlayback(broadcaster, assetId, request)
+            .map(ResponseEntity::ok)
+            .orElseThrow(() -> new ResponseStatusException(NOT_FOUND, "Asset not found"));
     }
 
     @PutMapping("/assets/{assetId}/visibility")
-    public ResponseEntity<AssetView> visibility(@PathVariable("broadcaster") String broadcaster,
-                                                @PathVariable("assetId") String assetId,
-                                                @RequestBody VisibilityRequest request,
-                                                OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<AssetView> visibility(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("assetId") String assetId,
+        @RequestBody VisibilityRequest request,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
-        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(broadcaster, sessionUsername);
-        LOG.info("Updating visibility for asset {} on {} by {} to hidden={} ", assetId, broadcaster, sessionUsername , request.isHidden());
-        return channelDirectoryService.updateVisibility(broadcaster, assetId, request)
-                .map(ResponseEntity::ok)
-                .orElseThrow(() -> {
-                    LOG.warn("Visibility update for missing asset {} on {} by {}", assetId, broadcaster, sessionUsername);
-                    return new ResponseStatusException(NOT_FOUND, "Asset not found");
-                });
+        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+            broadcaster,
+            sessionUsername
+        );
+        LOG.info(
+            "Updating visibility for asset {} on {} by {} to hidden={} ",
+            assetId,
+            broadcaster,
+            sessionUsername,
+            request.isHidden()
+        );
+        return channelDirectoryService
+            .updateVisibility(broadcaster, assetId, request)
+            .map(ResponseEntity::ok)
+            .orElseThrow(() -> {
+                LOG.warn("Visibility update for missing asset {} on {} by {}", assetId, broadcaster, sessionUsername);
+                return new ResponseStatusException(NOT_FOUND, "Asset not found");
+            });
     }
 
     @GetMapping("/assets/{assetId}/content")
-    public ResponseEntity<byte[]> getAssetContent(@PathVariable("broadcaster") String broadcaster,
-                                                  @PathVariable("assetId") String assetId) {
+    public ResponseEntity<byte[]> getAssetContent(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("assetId") String assetId
+    ) {
         LOG.debug("Serving asset {} for broadcaster {}", assetId, broadcaster);
-        return channelDirectoryService.getAssetContent(assetId)
-            .map(content -> ResponseEntity.ok()
+        return channelDirectoryService
+            .getAssetContent(assetId)
+            .map((content) ->
+                ResponseEntity.ok()
                     .header("X-Content-Type-Options", "nosniff")
                     .header(HttpHeaders.CONTENT_DISPOSITION, contentDispositionFor(content.mediaType()))
                     .contentType(MediaType.parseMediaType(content.mediaType()))
-                    .body(content.bytes()))
+                    .body(content.bytes())
+            )
             .orElseThrow(() -> new ResponseStatusException(NOT_FOUND, "Asset not found"));
     }
 
     @GetMapping("/assets/{assetId}/preview")
-    public ResponseEntity<byte[]> getAssetPreview(@PathVariable("broadcaster") String broadcaster,
-                                                  @PathVariable("assetId") String assetId) {
+    public ResponseEntity<byte[]> getAssetPreview(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("assetId") String assetId
+    ) {
         LOG.debug("Serving preview for asset {} for broadcaster {}", assetId, broadcaster);
-        return channelDirectoryService.getAssetPreview(assetId, true)
-            .map(content -> ResponseEntity.ok()
+        return channelDirectoryService
+            .getAssetPreview(assetId, true)
+            .map((content) ->
+                ResponseEntity.ok()
                     .header("X-Content-Type-Options", "nosniff")
                     .contentType(MediaType.parseMediaType(content.mediaType()))
-                    .body(content.bytes()))
+                    .body(content.bytes())
+            )
             .orElseThrow(() -> new ResponseStatusException(NOT_FOUND, "Preview not found"));
     }
 
     private String contentDispositionFor(String mediaType) {
-        if (mediaType != null && dev.kruhlmann.imgfloat.service.media.MediaDetectionService.isInlineDisplayType(mediaType)) {
+        if (
+            mediaType != null &&
+            dev.kruhlmann.imgfloat.service.media.MediaDetectionService.isInlineDisplayType(mediaType)
+        ) {
             return "inline";
         }
         return "attachment";
     }
 
     @DeleteMapping("/assets/{assetId}")
-    public ResponseEntity<?> delete(@PathVariable("broadcaster") String broadcaster,
-                                    @PathVariable("assetId") String assetId,
-                                    OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<?> delete(
+        @PathVariable("broadcaster") String broadcaster,
+        @PathVariable("assetId") String assetId,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
-        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(broadcaster, sessionUsername);
+        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+            broadcaster,
+            sessionUsername
+        );
         boolean removed = channelDirectoryService.deleteAsset(assetId);
         if (!removed) {
             LOG.warn("Attempt to delete missing asset {} on {} by {}", assetId, broadcaster, sessionUsername);
@@ -285,9 +354,11 @@ public class ChannelApiController {
         return ResponseEntity.ok().build();
     }
 
-    private OAuth2AuthorizedClient resolveAuthorizedClient(OAuth2AuthenticationToken oauthToken,
-                                                           OAuth2AuthorizedClient authorizedClient,
-                                                           HttpServletRequest request) {
+    private OAuth2AuthorizedClient resolveAuthorizedClient(
+        OAuth2AuthenticationToken oauthToken,
+        OAuth2AuthorizedClient authorizedClient,
+        HttpServletRequest request
+    ) {
         if (authorizedClient != null) {
             return authorizedClient;
         }
@@ -295,12 +366,16 @@ public class ChannelApiController {
             return null;
         }
         OAuth2AuthorizedClient sessionClient = authorizedClientRepository.loadAuthorizedClient(
-                oauthToken.getAuthorizedClientRegistrationId(),
-                oauthToken,
-                request);
+            oauthToken.getAuthorizedClientRegistrationId(),
+            oauthToken,
+            request
+        );
         if (sessionClient != null) {
             return sessionClient;
         }
-        return authorizedClientService.loadAuthorizedClient(oauthToken.getAuthorizedClientRegistrationId(), oauthToken.getName());
+        return authorizedClientService.loadAuthorizedClient(
+            oauthToken.getAuthorizedClientRegistrationId(),
+            oauthToken.getName()
+        );
     }
 }

src/main/java/dev/kruhlmann/imgfloat/controller/ChannelDirectoryApiController.java

@@ -1,13 +1,12 @@
 package dev.kruhlmann.imgfloat.controller;
 
 import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
+import java.util.List;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
-import java.util.List;
-
 @RestController
 @RequestMapping("/api/channels")
 public class ChannelDirectoryApiController {

src/main/java/dev/kruhlmann/imgfloat/controller/SettingsApiController.java

@@ -1,19 +1,27 @@
 package dev.kruhlmann.imgfloat.controller;
 
-import dev.kruhlmann.imgfloat.model.Settings;
-import dev.kruhlmann.imgfloat.model.OauthSessionUser;
-import dev.kruhlmann.imgfloat.service.SettingsService;
-import dev.kruhlmann.imgfloat.service.AuthorizationService;
+import static org.springframework.http.HttpStatus.BAD_REQUEST;
+import static org.springframework.http.HttpStatus.FORBIDDEN;
+import static org.springframework.http.HttpStatus.NOT_FOUND;
 
+import dev.kruhlmann.imgfloat.model.OauthSessionUser;
+import dev.kruhlmann.imgfloat.model.Settings;
+import dev.kruhlmann.imgfloat.service.AuthorizationService;
+import dev.kruhlmann.imgfloat.service.SettingsService;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import jakarta.validation.Valid;
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Optional;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.oauth2.client.OAuth2AuthorizedClient;
 import org.springframework.security.oauth2.client.OAuth2AuthorizedClientService;
-import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
 import org.springframework.security.oauth2.client.annotation.RegisteredOAuth2AuthorizedClient;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -24,20 +32,11 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.server.ResponseStatusException;
 
-import java.util.Collection;
-import java.io.IOException;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Optional;
-
-import static org.springframework.http.HttpStatus.FORBIDDEN;
-import static org.springframework.http.HttpStatus.NOT_FOUND;
-import static org.springframework.http.HttpStatus.BAD_REQUEST;
-
 @RestController
 @RequestMapping("/api/settings")
 @SecurityRequirement(name = "administrator")
 public class SettingsApiController {
+
     private static final Logger LOG = LoggerFactory.getLogger(ChannelApiController.class);
 
     private final SettingsService settingsService;
@@ -49,7 +48,10 @@ public class SettingsApiController {
     }
 
     @PutMapping("/set")
-    public ResponseEntity<Settings> setSettings(@Valid @RequestBody Settings newSettings, OAuth2AuthenticationToken oauthToken) {
+    public ResponseEntity<Settings> setSettings(
+        @Valid @RequestBody Settings newSettings,
+        OAuth2AuthenticationToken oauthToken
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
         authorizationService.userIsSystemAdministratorOrThrowHttpError(sessionUsername);
 

src/main/java/dev/kruhlmann/imgfloat/controller/ViewController.java

@@ -1,14 +1,16 @@
 package dev.kruhlmann.imgfloat.controller;
 
-import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
-import dev.kruhlmann.imgfloat.service.VersionService;
-import dev.kruhlmann.imgfloat.service.SettingsService;
-import dev.kruhlmann.imgfloat.service.AuthorizationService;
-import dev.kruhlmann.imgfloat.model.Settings;
-import dev.kruhlmann.imgfloat.model.OauthSessionUser;
+import static org.springframework.http.HttpStatus.FORBIDDEN;
+import static org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import dev.kruhlmann.imgfloat.model.OauthSessionUser;
+import dev.kruhlmann.imgfloat.model.Settings;
+import dev.kruhlmann.imgfloat.service.AuthorizationService;
+import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
+import dev.kruhlmann.imgfloat.service.SettingsService;
+import dev.kruhlmann.imgfloat.service.VersionService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -19,11 +21,9 @@ import org.springframework.ui.Model;
 import org.springframework.util.unit.DataSize;
 import org.springframework.web.server.ResponseStatusException;
 
-import static org.springframework.http.HttpStatus.FORBIDDEN;
-import static org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR;
-
 @Controller
 public class ViewController {
+
     private static final Logger LOG = LoggerFactory.getLogger(ViewController.class);
     private final ChannelDirectoryService channelDirectoryService;
     private final VersionService versionService;
@@ -85,11 +85,16 @@ public class ViewController {
     }
 
     @org.springframework.web.bind.annotation.GetMapping("/view/{broadcaster}/admin")
-    public String adminView(@org.springframework.web.bind.annotation.PathVariable("broadcaster") String broadcaster,
-                            OAuth2AuthenticationToken oauthToken,
-                            Model model) {
+    public String adminView(
+        @org.springframework.web.bind.annotation.PathVariable("broadcaster") String broadcaster,
+        OAuth2AuthenticationToken oauthToken,
+        Model model
+    ) {
         String sessionUsername = OauthSessionUser.from(oauthToken).login();
-        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(broadcaster, sessionUsername);
+        authorizationService.userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+            broadcaster,
+            sessionUsername
+        );
         LOG.info("Rendering admin console for {} (requested by {})", broadcaster, sessionUsername);
         Settings settings = settingsService.get();
         model.addAttribute("broadcaster", broadcaster.toLowerCase());
@@ -106,8 +111,10 @@ public class ViewController {
     }
 
     @org.springframework.web.bind.annotation.GetMapping("/view/{broadcaster}/broadcast")
-    public String broadcastView(@org.springframework.web.bind.annotation.PathVariable("broadcaster") String broadcaster,
-                                 Model model) {
+    public String broadcastView(
+        @org.springframework.web.bind.annotation.PathVariable("broadcaster") String broadcaster,
+        Model model
+    ) {
         LOG.debug("Rendering broadcast overlay for {}", broadcaster);
         model.addAttribute("broadcaster", broadcaster.toLowerCase());
         return "broadcast";

src/main/java/dev/kruhlmann/imgfloat/model/AdminRequest.java

@@ -3,6 +3,7 @@ package dev.kruhlmann.imgfloat.model;
 import jakarta.validation.constraints.NotBlank;
 
 public class AdminRequest {
+
     @NotBlank
     private String username;
 

src/main/java/dev/kruhlmann/imgfloat/model/Asset.java

@@ -4,9 +4,8 @@ import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.PrePersist;
-import jakarta.persistence.Table;
 import jakarta.persistence.PreUpdate;
-
+import jakarta.persistence.Table;
 import java.time.Instant;
 import java.util.Locale;
 import java.util.UUID;
@@ -14,18 +13,25 @@ import java.util.UUID;
 @Entity
 @Table(name = "assets")
 public class Asset {
+
     @Id
     private String id;
+
     @Column(nullable = false)
     private String broadcaster;
+
     @Column(nullable = false)
     private String name;
+
     @Column(columnDefinition = "TEXT", nullable = false)
     private String url;
+
     @Column(columnDefinition = "TEXT", nullable = false)
     private String preview;
+
     @Column(nullable = false)
     private Instant createdAt;
+
     private double x;
     private double y;
     private double width;
@@ -43,8 +49,7 @@ public class Asset {
     private Double audioVolume;
     private boolean hidden;
 
-    public Asset() {
-    }
+    public Asset() {}
 
     public Asset(String broadcaster, String name, String url, double width, double height) {
         this.id = UUID.randomUUID().toString();

src/main/java/dev/kruhlmann/imgfloat/model/AssetEvent.java

@@ -4,12 +4,13 @@ import com.fasterxml.jackson.annotation.JsonInclude;
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 public class AssetEvent {
+
     public enum Type {
         CREATED,
         UPDATED,
         VISIBILITY,
         PLAY,
-        DELETED
+        DELETED,
     }
 
     private Type type;

src/main/java/dev/kruhlmann/imgfloat/model/AssetPatch.java

@@ -8,37 +8,37 @@ import com.fasterxml.jackson.annotation.JsonInclude;
  */
 @JsonInclude(JsonInclude.Include.NON_NULL)
 public record AssetPatch(
-        String id,
-        Double x,
-        Double y,
-        Double width,
-        Double height,
-        Double rotation,
-        Double speed,
-        Boolean muted,
-        Integer zIndex,
-        Boolean hidden,
-        Boolean audioLoop,
-        Integer audioDelayMillis,
-        Double audioSpeed,
-        Double audioPitch,
-        Double audioVolume
+    String id,
+    Double x,
+    Double y,
+    Double width,
+    Double height,
+    Double rotation,
+    Double speed,
+    Boolean muted,
+    Integer zIndex,
+    Boolean hidden,
+    Boolean audioLoop,
+    Integer audioDelayMillis,
+    Double audioSpeed,
+    Double audioPitch,
+    Double audioVolume
 ) {
     public static TransformSnapshot capture(Asset asset) {
         return new TransformSnapshot(
-                asset.getX(),
-                asset.getY(),
-                asset.getWidth(),
-                asset.getHeight(),
-                asset.getRotation(),
-                asset.getSpeed(),
-                asset.isMuted(),
-                asset.getZIndex(),
-                asset.isAudioLoop(),
-                asset.getAudioDelayMillis(),
-                asset.getAudioSpeed(),
-                asset.getAudioPitch(),
-                asset.getAudioVolume()
+            asset.getX(),
+            asset.getY(),
+            asset.getWidth(),
+            asset.getHeight(),
+            asset.getRotation(),
+            asset.getSpeed(),
+            asset.isMuted(),
+            asset.getZIndex(),
+            asset.isAudioLoop(),
+            asset.getAudioDelayMillis(),
+            asset.getAudioSpeed(),
+            asset.getAudioPitch(),
+            asset.getAudioVolume()
         );
     }
 
@@ -48,41 +48,43 @@ public record AssetPatch(
      */
     public static AssetPatch fromTransform(TransformSnapshot before, Asset asset, TransformRequest request) {
         return new AssetPatch(
-                asset.getId(),
-                changed(before.x(), asset.getX()),
-                changed(before.y(), asset.getY()),
-                changed(before.width(), asset.getWidth()),
-                changed(before.height(), asset.getHeight()),
-                changed(before.rotation(), asset.getRotation()),
-                request.getSpeed() != null ? changed(before.speed(), asset.getSpeed()) : null,
-                request.getMuted() != null ? changed(before.muted(), asset.isMuted()) : null,
-                request.getZIndex() != null ? changed(before.zIndex(), asset.getZIndex()) : null,
-                null,
-                request.getAudioLoop() != null ? changed(before.audioLoop(), asset.isAudioLoop()) : null,
-                request.getAudioDelayMillis() != null ? changed(before.audioDelayMillis(), asset.getAudioDelayMillis()) : null,
-                request.getAudioSpeed() != null ? changed(before.audioSpeed(), asset.getAudioSpeed()) : null,
-                request.getAudioPitch() != null ? changed(before.audioPitch(), asset.getAudioPitch()) : null,
-                request.getAudioVolume() != null ? changed(before.audioVolume(), asset.getAudioVolume()) : null
+            asset.getId(),
+            changed(before.x(), asset.getX()),
+            changed(before.y(), asset.getY()),
+            changed(before.width(), asset.getWidth()),
+            changed(before.height(), asset.getHeight()),
+            changed(before.rotation(), asset.getRotation()),
+            request.getSpeed() != null ? changed(before.speed(), asset.getSpeed()) : null,
+            request.getMuted() != null ? changed(before.muted(), asset.isMuted()) : null,
+            request.getZIndex() != null ? changed(before.zIndex(), asset.getZIndex()) : null,
+            null,
+            request.getAudioLoop() != null ? changed(before.audioLoop(), asset.isAudioLoop()) : null,
+            request.getAudioDelayMillis() != null
+                ? changed(before.audioDelayMillis(), asset.getAudioDelayMillis())
+                : null,
+            request.getAudioSpeed() != null ? changed(before.audioSpeed(), asset.getAudioSpeed()) : null,
+            request.getAudioPitch() != null ? changed(before.audioPitch(), asset.getAudioPitch()) : null,
+            request.getAudioVolume() != null ? changed(before.audioVolume(), asset.getAudioVolume()) : null
         );
     }
 
     public static AssetPatch fromVisibility(Asset asset) {
         return new AssetPatch(
-                asset.getId(),
-                null,
-                null,
-                null,
-                null,
-                null,
-                null,
-                null,
-                null,
-                asset.isHidden(),
-                null,
-                null,
-                null,
-                null,
-                null
+            asset.getId(),
+            null,
+            null,
+            null,
+            null,
+            null,
+            null,
+            null,
+            null,
+            asset.isHidden(),
+            null,
+            null,
+            null,
+            null,
+            null
         );
     }
 
@@ -99,18 +101,18 @@ public record AssetPatch(
     }
 
     public record TransformSnapshot(
-            double x,
-            double y,
-            double width,
-            double height,
-            double rotation,
-            double speed,
-            boolean muted,
-            int zIndex,
-            boolean audioLoop,
-            int audioDelayMillis,
-            double audioSpeed,
-            double audioPitch,
-            double audioVolume
-    ) { }
+        double x,
+        double y,
+        double width,
+        double height,
+        double rotation,
+        double speed,
+        boolean muted,
+        int zIndex,
+        boolean audioLoop,
+        int audioDelayMillis,
+        double audioSpeed,
+        double audioPitch,
+        double audioVolume
+    ) {}
 }

src/main/java/dev/kruhlmann/imgfloat/model/AssetView.java

@@ -3,57 +3,57 @@ package dev.kruhlmann.imgfloat.model;
 import java.time.Instant;
 
 public record AssetView(
-        String id,
-        String broadcaster,
-        String name,
-        String url,
-        String previewUrl,
-        double x,
-        double y,
-        double width,
-        double height,
-        double rotation,
-        Double speed,
-        Boolean muted,
-        String mediaType,
-        String originalMediaType,
-        Integer zIndex,
-        Boolean audioLoop,
-        Integer audioDelayMillis,
-        Double audioSpeed,
-        Double audioPitch,
-        Double audioVolume,
-        boolean hidden,
-        boolean hasPreview,
-        Instant createdAt
+    String id,
+    String broadcaster,
+    String name,
+    String url,
+    String previewUrl,
+    double x,
+    double y,
+    double width,
+    double height,
+    double rotation,
+    Double speed,
+    Boolean muted,
+    String mediaType,
+    String originalMediaType,
+    Integer zIndex,
+    Boolean audioLoop,
+    Integer audioDelayMillis,
+    Double audioSpeed,
+    Double audioPitch,
+    Double audioVolume,
+    boolean hidden,
+    boolean hasPreview,
+    Instant createdAt
 ) {
     public static AssetView from(String broadcaster, Asset asset) {
         return new AssetView(
-                asset.getId(),
-                asset.getBroadcaster(),
-                asset.getName(),
-                "/api/channels/" + broadcaster + "/assets/" + asset.getId() + "/content",
-                asset.getPreview() != null && !asset.getPreview().isBlank()
-                        ? "/api/channels/" + broadcaster + "/assets/" + asset.getId() + "/preview"
-                        : null,
-                asset.getX(),
-                asset.getY(),
-                asset.getWidth(),
-                asset.getHeight(),
-                asset.getRotation(),
-                asset.getSpeed(),
-                asset.isMuted(),
-                asset.getMediaType(),
-                asset.getOriginalMediaType(),
-                asset.getZIndex(),
-                asset.isAudioLoop(),
-                asset.getAudioDelayMillis(),
-                asset.getAudioSpeed(),
-                asset.getAudioPitch(),
-                asset.getAudioVolume(),
-                asset.isHidden(),
-                asset.getPreview() != null && !asset.getPreview().isBlank(),
-                asset.getCreatedAt()
+            asset.getId(),
+            asset.getBroadcaster(),
+            asset.getName(),
+            "/api/channels/" + broadcaster + "/assets/" + asset.getId() + "/content",
+            asset.getPreview() != null && !asset.getPreview().isBlank()
+                ? "/api/channels/" + broadcaster + "/assets/" + asset.getId() + "/preview"
+                : null,
+            asset.getX(),
+            asset.getY(),
+            asset.getWidth(),
+            asset.getHeight(),
+            asset.getRotation(),
+            asset.getSpeed(),
+            asset.isMuted(),
+            asset.getMediaType(),
+            asset.getOriginalMediaType(),
+            asset.getZIndex(),
+            asset.isAudioLoop(),
+            asset.getAudioDelayMillis(),
+            asset.getAudioSpeed(),
+            asset.getAudioPitch(),
+            asset.getAudioVolume(),
+            asset.isHidden(),
+            asset.getPreview() != null && !asset.getPreview().isBlank(),
+            asset.getCreatedAt()
         );
     }
 }

src/main/java/dev/kruhlmann/imgfloat/model/CanvasSettingsRequest.java

@@ -3,14 +3,14 @@ package dev.kruhlmann.imgfloat.model;
 import jakarta.validation.constraints.Positive;
 
 public class CanvasSettingsRequest {
+
     @Positive
     private double width;
 
     @Positive
     private double height;
 
-    public CanvasSettingsRequest() {
-    }
+    public CanvasSettingsRequest() {}
 
     public CanvasSettingsRequest(double width, double height) {
         this.width = width;

src/main/java/dev/kruhlmann/imgfloat/model/Channel.java

@@ -10,7 +10,6 @@ import jakarta.persistence.JoinColumn;
 import jakarta.persistence.PrePersist;
 import jakarta.persistence.PreUpdate;
 import jakarta.persistence.Table;
-
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Locale;
@@ -20,6 +19,7 @@ import java.util.stream.Collectors;
 @Entity
 @Table(name = "channels")
 public class Channel {
+
     @Id
     private String broadcaster;
 
@@ -32,8 +32,7 @@ public class Channel {
 
     private double canvasHeight = 1080;
 
-    public Channel() {
-    }
+    public Channel() {}
 
     public Channel(String broadcaster) {
         this.broadcaster = normalize(broadcaster);
@@ -77,9 +76,7 @@ public class Channel {
     @PreUpdate
     public void normalizeFields() {
         this.broadcaster = normalize(broadcaster);
-        this.admins = admins.stream()
-                .map(Channel::normalize)
-                .collect(Collectors.toSet());
+        this.admins = admins.stream().map(Channel::normalize).collect(Collectors.toSet());
         if (canvasWidth <= 0) {
             canvasWidth = 1920;
         }

src/main/java/dev/kruhlmann/imgfloat/model/PlaybackRequest.java

@@ -1,6 +1,7 @@
 package dev.kruhlmann.imgfloat.model;
 
 public class PlaybackRequest {
+
     private Boolean play;
 
     public Boolean getPlay() {

src/main/java/dev/kruhlmann/imgfloat/model/Settings.java

@@ -4,34 +4,42 @@ import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.PrePersist;
-import jakarta.persistence.Table;
 import jakarta.persistence.PreUpdate;
+import jakarta.persistence.Table;
 
 @Entity
 @Table(name = "settings")
 public class Settings {
+
     @Id
     @Column(nullable = false)
     private int id = 1;
+
     @Column(nullable = false)
     private double minAssetPlaybackSpeedFraction;
+
     @Column(nullable = false)
     private double maxAssetPlaybackSpeedFraction;
+
     @Column(nullable = false)
     private double minAssetAudioPitchFraction;
+
     @Column(nullable = false)
     private double maxAssetAudioPitchFraction;
+
     @Column(nullable = false)
     private double minAssetVolumeFraction;
+
     @Column(nullable = false)
     private double maxAssetVolumeFraction;
+
     @Column(nullable = false)
     private int maxCanvasSideLengthPixels;
+
     @Column(nullable = false)
     private int canvasFramesPerSecond;
 
-    protected Settings() {
-    }
+    protected Settings() {}
 
     public static Settings defaults() {
         Settings s = new Settings();
@@ -117,5 +125,4 @@ public class Settings {
     public void setCanvasFramesPerSecond(int canvasFramesPerSecond) {
         this.canvasFramesPerSecond = canvasFramesPerSecond;
     }
-
 }

src/main/java/dev/kruhlmann/imgfloat/model/SystemAdministrator.java

@@ -4,27 +4,24 @@ import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.PrePersist;
-import jakarta.persistence.Table;
 import jakarta.persistence.PreUpdate;
+import jakarta.persistence.Table;
 import jakarta.persistence.UniqueConstraint;
-
 import java.time.Instant;
 import java.util.Locale;
 import java.util.UUID;
 
 @Entity
-@Table(
-    name = "system_administrators",
-    uniqueConstraints = @UniqueConstraint(columnNames = "twitch_username")
-)
+@Table(name = "system_administrators", uniqueConstraints = @UniqueConstraint(columnNames = "twitch_username"))
 public class SystemAdministrator {
+
     @Id
     private String id;
+
     @Column(name = "twitch_username", nullable = false)
     private String twitchUsername;
 
-    public SystemAdministrator() {
-    }
+    public SystemAdministrator() {}
 
     public SystemAdministrator(String twitchUsername) {
         this.twitchUsername = twitchUsername;
@@ -43,7 +40,6 @@ public class SystemAdministrator {
         return id;
     }
 
-
     public String getTwitchUsername() {
         return twitchUsername;
     }

src/main/java/dev/kruhlmann/imgfloat/model/TransformRequest.java

@@ -6,6 +6,7 @@ import jakarta.validation.constraints.Positive;
 import jakarta.validation.constraints.PositiveOrZero;
 
 public class TransformRequest {
+
     private double x;
     private double y;
 
@@ -25,6 +26,7 @@ public class TransformRequest {
 
     @Positive(message = "zIndex must be at least 1")
     private Integer zIndex;
+
     private Boolean audioLoop;
 
     @PositiveOrZero(message = "Audio delay must be zero or greater")

src/main/java/dev/kruhlmann/imgfloat/model/VisibilityRequest.java

@@ -1,6 +1,7 @@
 package dev.kruhlmann.imgfloat.model;
 
 public class VisibilityRequest {
+
     private boolean hidden;
 
     public boolean isHidden() {

src/main/java/dev/kruhlmann/imgfloat/repository/AssetRepository.java

@@ -1,9 +1,8 @@
 package dev.kruhlmann.imgfloat.repository;
 
 import dev.kruhlmann.imgfloat.model.Asset;
-import org.springframework.data.jpa.repository.JpaRepository;
-
 import java.util.List;
+import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface AssetRepository extends JpaRepository<Asset, String> {
     List<Asset> findByBroadcaster(String broadcaster);

src/main/java/dev/kruhlmann/imgfloat/repository/ChannelRepository.java

@@ -1,9 +1,8 @@
 package dev.kruhlmann.imgfloat.repository;
 
 import dev.kruhlmann.imgfloat.model.Channel;
-import org.springframework.data.jpa.repository.JpaRepository;
-
 import java.util.List;
+import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface ChannelRepository extends JpaRepository<Channel, String> {
     List<Channel> findTop50ByBroadcasterContainingIgnoreCaseOrderByBroadcasterAsc(String broadcasterFragment);

src/main/java/dev/kruhlmann/imgfloat/repository/SettingsRepository.java

@@ -3,5 +3,4 @@ package dev.kruhlmann.imgfloat.repository;
 import dev.kruhlmann.imgfloat.model.Settings;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface SettingsRepository extends JpaRepository<Settings, Integer> {
-}
+public interface SettingsRepository extends JpaRepository<Settings, Integer> {}

src/main/java/dev/kruhlmann/imgfloat/service/AssetCleanupService.java

@@ -2,35 +2,29 @@ package dev.kruhlmann.imgfloat.service;
 
 import dev.kruhlmann.imgfloat.model.Asset;
 import dev.kruhlmann.imgfloat.repository.AssetRepository;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.boot.context.event.ApplicationReadyEvent;
-import org.springframework.scheduling.annotation.Async;
-import org.springframework.context.event.EventListener;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @Service
 public class AssetCleanupService {
 
-    private static final Logger logger =
-            LoggerFactory.getLogger(AssetCleanupService.class);
+    private static final Logger logger = LoggerFactory.getLogger(AssetCleanupService.class);
 
     private final AssetRepository assetRepository;
     private final AssetStorageService assetStorageService;
 
-    public AssetCleanupService(
-            AssetRepository assetRepository,
-            AssetStorageService assetStorageService
-    ) {
+    public AssetCleanupService(AssetRepository assetRepository, AssetStorageService assetStorageService) {
         this.assetRepository = assetRepository;
         this.assetStorageService = assetStorageService;
     }
@@ -41,10 +35,7 @@ public class AssetCleanupService {
     public void cleanup() {
         logger.info("Collecting referenced assets");
 
-        Set<String> referencedIds = assetRepository.findAll()
-                .stream()
-                .map(Asset::getId)
-                .collect(Collectors.toSet());
+        Set<String> referencedIds = assetRepository.findAll().stream().map(Asset::getId).collect(Collectors.toSet());
 
         assetStorageService.deleteOrphanedAssets(referencedIds);
     }

src/main/java/dev/kruhlmann/imgfloat/service/AssetStorageService.java

@@ -1,12 +1,7 @@
 package dev.kruhlmann.imgfloat.service;
 
-import dev.kruhlmann.imgfloat.service.media.AssetContent;
 import dev.kruhlmann.imgfloat.model.Asset;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.stereotype.Service;
-
+import dev.kruhlmann.imgfloat.service.media.AssetContent;
 import java.io.IOException;
 import java.nio.file.*;
 import java.util.Locale;
@@ -14,9 +9,14 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
 import java.util.stream.Stream;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
 
 @Service
 public class AssetStorageService {
+
     private static final Logger logger = LoggerFactory.getLogger(AssetStorageService.class);
     private static final Map<String, String> EXTENSIONS = Map.ofEntries(
         Map.entry("image/png", ".png"),
@@ -42,15 +42,15 @@ public class AssetStorageService {
     private final Path previewRoot;
 
     public AssetStorageService(
-            @Value("${IMGFLOAT_ASSETS_PATH:#{null}}") String assetRoot,
-            @Value("${IMGFLOAT_PREVIEWS_PATH:#{null}}") String previewRoot
+        @Value("${IMGFLOAT_ASSETS_PATH:#{null}}") String assetRoot,
+        @Value("${IMGFLOAT_PREVIEWS_PATH:#{null}}") String previewRoot
     ) {
         String assetsBase = assetRoot != null
-                ? assetRoot
-                : Paths.get(System.getProperty("java.io.tmpdir"), "imgfloat-assets").toString();
+            ? assetRoot
+            : Paths.get(System.getProperty("java.io.tmpdir"), "imgfloat-assets").toString();
         String previewsBase = previewRoot != null
-                ? previewRoot
-                : Paths.get(System.getProperty("java.io.tmpdir"), "imgfloat-previews").toString();
+            ? previewRoot
+            : Paths.get(System.getProperty("java.io.tmpdir"), "imgfloat-previews").toString();
 
         this.assetRoot = Paths.get(assetsBase).normalize().toAbsolutePath();
         this.previewRoot = Paths.get(previewsBase).normalize().toAbsolutePath();
@@ -62,9 +62,7 @@ public class AssetStorageService {
         }
     }
 
-    public void storeAsset(String broadcaster, String assetId, byte[] assetBytes, String mediaType)
-            throws IOException {
-
+    public void storeAsset(String broadcaster, String assetId, byte[] assetBytes, String mediaType) throws IOException {
         if (assetBytes == null || assetBytes.length == 0) {
             throw new IOException("Asset content is empty");
         }
@@ -72,35 +70,35 @@ public class AssetStorageService {
         Path file = assetPath(broadcaster, assetId, mediaType);
         Files.createDirectories(file.getParent());
 
-        Files.write(file, assetBytes,
-                StandardOpenOption.CREATE,
-                StandardOpenOption.TRUNCATE_EXISTING,
-                StandardOpenOption.WRITE);
+        Files.write(
+            file,
+            assetBytes,
+            StandardOpenOption.CREATE,
+            StandardOpenOption.TRUNCATE_EXISTING,
+            StandardOpenOption.WRITE
+        );
         logger.info("Wrote asset to {}", file.toString());
     }
 
-    public void storePreview(String broadcaster, String assetId, byte[] previewBytes)
-            throws IOException {
-
+    public void storePreview(String broadcaster, String assetId, byte[] previewBytes) throws IOException {
         if (previewBytes == null || previewBytes.length == 0) return;
 
         Path file = previewPath(broadcaster, assetId);
         Files.createDirectories(file.getParent());
 
-        Files.write(file, previewBytes,
-                StandardOpenOption.CREATE,
-                StandardOpenOption.TRUNCATE_EXISTING,
-                StandardOpenOption.WRITE);
+        Files.write(
+            file,
+            previewBytes,
+            StandardOpenOption.CREATE,
+            StandardOpenOption.TRUNCATE_EXISTING,
+            StandardOpenOption.WRITE
+        );
         logger.info("Wrote asset to {}", file.toString());
     }
 
     public Optional<AssetContent> loadAssetFile(Asset asset) {
         try {
-            Path file = assetPath(
-                    asset.getBroadcaster(),
-                    asset.getId(),
-                    asset.getMediaType()
-            );
+            Path file = assetPath(asset.getBroadcaster(), asset.getId(), asset.getMediaType());
 
             if (!Files.exists(file)) return Optional.empty();
 
@@ -141,12 +139,8 @@ public class AssetStorageService {
 
     public void deleteAsset(Asset asset) {
         try {
-            Files.deleteIfExists(
-                assetPath(asset.getBroadcaster(), asset.getId(), asset.getMediaType())
-            );
-            Files.deleteIfExists(
-                previewPath(asset.getBroadcaster(), asset.getId())
-            );
+            Files.deleteIfExists(assetPath(asset.getBroadcaster(), asset.getId(), asset.getMediaType()));
+            Files.deleteIfExists(previewPath(asset.getBroadcaster(), asset.getId()));
         } catch (Exception e) {
             logger.warn("Failed to delete asset {}", asset.getId(), e);
         }
@@ -162,16 +156,17 @@ public class AssetStorageService {
             return;
         }
         try (var paths = Files.walk(root)) {
-            paths.filter(Files::isRegularFile)
-                 .filter(p -> isOrphan(p, referencedAssetIds))
-                 .forEach(p -> {
-                     try {
-                         Files.delete(p);
-                         logger.warn("Deleted orphan file {}", p);
-                     } catch (IOException e) {
-                         logger.error("Failed to delete {}", p, e);
-                     }
-                 });
+            paths
+                .filter(Files::isRegularFile)
+                .filter((p) -> isOrphan(p, referencedAssetIds))
+                .forEach((p) -> {
+                    try {
+                        Files.delete(p);
+                        logger.warn("Deleted orphan file {}", p);
+                    } catch (IOException e) {
+                        logger.error("Failed to delete {}", p, e);
+                    }
+                });
         } catch (IOException e) {
             logger.error("Failed to walk {}", root, e);
         }

src/main/java/dev/kruhlmann/imgfloat/service/AuthorizationService.java

@@ -1,26 +1,29 @@
 package dev.kruhlmann.imgfloat.service;
 
+import static org.springframework.http.HttpStatus.FORBIDDEN;
+import static org.springframework.http.HttpStatus.NOT_FOUND;
+import static org.springframework.http.HttpStatus.UNAUTHORIZED;
+
 import dev.kruhlmann.imgfloat.model.OauthSessionUser;
 import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
 import dev.kruhlmann.imgfloat.service.SystemAdministratorService;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 import org.springframework.web.server.ResponseStatusException;
 
-import static org.springframework.http.HttpStatus.UNAUTHORIZED;
-import static org.springframework.http.HttpStatus.FORBIDDEN;
-import static org.springframework.http.HttpStatus.NOT_FOUND;
-
 @Service
 public class AuthorizationService {
+
     private static final Logger LOG = LoggerFactory.getLogger(AuthorizationService.class);
 
     private final ChannelDirectoryService channelDirectoryService;
     private final SystemAdministratorService systemAdministratorService;
 
-    public AuthorizationService(ChannelDirectoryService channelDirectoryService, SystemAdministratorService systemAdministratorService) {
+    public AuthorizationService(
+        ChannelDirectoryService channelDirectoryService,
+        SystemAdministratorService systemAdministratorService
+    ) {
         this.channelDirectoryService = channelDirectoryService;
         this.systemAdministratorService = systemAdministratorService;
     }
@@ -35,14 +38,25 @@ public class AuthorizationService {
             throw new ResponseStatusException(NOT_FOUND, "You can only manage your own channel");
         }
         if (!sessionUsername.equals(submittedUsername)) {
-            LOG.warn("User match with oauth token failed: session user {} does not match submitted user {}", sessionUsername, submittedUsername);
+            LOG.warn(
+                "User match with oauth token failed: session user {} does not match submitted user {}",
+                sessionUsername,
+                submittedUsername
+            );
             throw new ResponseStatusException(FORBIDDEN, "You are not this user");
         }
     }
 
-    public void userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(String broadcaster, String sessionUsername) {
+    public void userIsBroadcasterOrChannelAdminForBroadcasterOrThrowHttpError(
+        String broadcaster,
+        String sessionUsername
+    ) {
         if (!userIsBroadcasterOrChannelAdminForBroadcaster(broadcaster, sessionUsername)) {
-            LOG.warn("Access denied for broadcaster/admin-only action by user {} on broadcaster {}", sessionUsername, broadcaster);
+            LOG.warn(
+                "Access denied for broadcaster/admin-only action by user {} on broadcaster {}",
+                sessionUsername,
+                broadcaster
+            );
             throw new ResponseStatusException(FORBIDDEN, "You do not have permission to manage this channel");
         }
     }
@@ -64,15 +78,20 @@ public class AuthorizationService {
 
     public boolean userIsChannelAdminForBroadcaster(String broadcaster, String sessionUsername) {
         if (sessionUsername == null || broadcaster == null) {
-            LOG.warn("Channel admin check failed: broadcaster or session username is null (broadcaster: {}, sessionUsername: {})", broadcaster, sessionUsername);
+            LOG.warn(
+                "Channel admin check failed: broadcaster or session username is null (broadcaster: {}, sessionUsername: {})",
+                broadcaster,
+                sessionUsername
+            );
             return false;
         }
         return channelDirectoryService.isAdmin(broadcaster, sessionUsername);
     }
 
     public boolean userIsBroadcasterOrChannelAdminForBroadcaster(String broadcaster, String sessionUser) {
-        return userIsBroadcaster(sessionUser, broadcaster) ||
-               userIsChannelAdminForBroadcaster(sessionUser, broadcaster);
+        return (
+            userIsBroadcaster(sessionUser, broadcaster) || userIsChannelAdminForBroadcaster(sessionUser, broadcaster)
+        );
     }
 
     public boolean userIsSystemAdministrator(String sessionUsername) {

src/main/java/dev/kruhlmann/imgfloat/service/ChannelDirectoryService.java

@@ -1,11 +1,14 @@
 package dev.kruhlmann.imgfloat.service;
 
+import static org.springframework.http.HttpStatus.BAD_REQUEST;
+import static org.springframework.http.HttpStatus.PAYLOAD_TOO_LARGE;
+
 import dev.kruhlmann.imgfloat.model.Asset;
 import dev.kruhlmann.imgfloat.model.AssetEvent;
 import dev.kruhlmann.imgfloat.model.AssetPatch;
-import dev.kruhlmann.imgfloat.model.Channel;
 import dev.kruhlmann.imgfloat.model.AssetView;
 import dev.kruhlmann.imgfloat.model.CanvasSettingsRequest;
+import dev.kruhlmann.imgfloat.model.Channel;
 import dev.kruhlmann.imgfloat.model.PlaybackRequest;
 import dev.kruhlmann.imgfloat.model.Settings;
 import dev.kruhlmann.imgfloat.model.TransformRequest;
@@ -17,7 +20,9 @@ import dev.kruhlmann.imgfloat.service.media.AssetContent;
 import dev.kruhlmann.imgfloat.service.media.MediaDetectionService;
 import dev.kruhlmann.imgfloat.service.media.MediaOptimizationService;
 import dev.kruhlmann.imgfloat.service.media.OptimizedAsset;
-
+import java.io.IOException;
+import java.util.*;
+import java.util.regex.Pattern;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -27,15 +32,9 @@ import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.server.ResponseStatusException;
 
-import java.io.IOException;
-import java.util.*;
-import java.util.regex.Pattern;
-
-import static org.springframework.http.HttpStatus.BAD_REQUEST;
-import static org.springframework.http.HttpStatus.PAYLOAD_TOO_LARGE;
-
 @Service
 public class ChannelDirectoryService {
+
     private static final Logger logger = LoggerFactory.getLogger(ChannelDirectoryService.class);
     private static final Pattern SAFE_FILENAME = Pattern.compile("[^a-zA-Z0-9._ -]");
 
@@ -68,21 +67,18 @@ public class ChannelDirectoryService {
         this.settingsService = settingsService;
     }
 
-
     public Channel getOrCreateChannel(String broadcaster) {
         String normalized = normalize(broadcaster);
-        return channelRepository.findById(normalized)
-                .orElseGet(() -> channelRepository.save(new Channel(normalized)));
+        return channelRepository.findById(normalized).orElseGet(() -> channelRepository.save(new Channel(normalized)));
     }
 
     public List<String> searchBroadcasters(String query) {
         String q = normalize(query);
         return channelRepository
-                .findTop50ByBroadcasterContainingIgnoreCaseOrderByBroadcasterAsc(
-                        q == null ? "" : q)
-                .stream()
-                .map(Channel::getBroadcaster)
-                .toList();
+            .findTop50ByBroadcasterContainingIgnoreCaseOrderByBroadcasterAsc(q == null ? "" : q)
+            .stream()
+            .map(Channel::getBroadcaster)
+            .toList();
     }
 
     public boolean addAdmin(String broadcaster, String username) {
@@ -90,8 +86,7 @@ public class ChannelDirectoryService {
         boolean added = channel.addAdmin(username);
         if (added) {
             channelRepository.save(channel);
-            messagingTemplate.convertAndSend(topicFor(broadcaster),
-                    "Admin added: " + username);
+            messagingTemplate.convertAndSend(topicFor(broadcaster), "Admin added: " + username);
         }
         return added;
     }
@@ -101,22 +96,19 @@ public class ChannelDirectoryService {
         boolean removed = channel.removeAdmin(username);
         if (removed) {
             channelRepository.save(channel);
-            messagingTemplate.convertAndSend(topicFor(broadcaster),
-                    "Admin removed: " + username);
+            messagingTemplate.convertAndSend(topicFor(broadcaster), "Admin removed: " + username);
         }
         return removed;
     }
 
     public Collection<AssetView> getAssetsForAdmin(String broadcaster) {
         String normalized = normalize(broadcaster);
-        return sortAndMapAssets(normalized,
-                assetRepository.findByBroadcaster(normalized));
+        return sortAndMapAssets(normalized, assetRepository.findByBroadcaster(normalized));
     }
 
     public Collection<AssetView> getVisibleAssets(String broadcaster) {
         String normalized = normalize(broadcaster);
-        return sortAndMapAssets(normalized,
-                assetRepository.findByBroadcasterAndHiddenFalse(normalized));
+        return sortAndMapAssets(normalized, assetRepository.findByBroadcasterAndHiddenFalse(normalized));
     }
 
     public CanvasSettingsRequest getCanvasSettings(String broadcaster) {
@@ -137,19 +129,15 @@ public class ChannelDirectoryService {
         long maxSize = uploadLimitBytes;
         if (fileSize > maxSize) {
             throw new ResponseStatusException(
-                    PAYLOAD_TOO_LARGE,
-                    String.format(
-                            "Uploaded file is too large (%d bytes). Maximum allowed is %d bytes.",
-                            fileSize,
-                            maxSize
-                    )
+                PAYLOAD_TOO_LARGE,
+                String.format("Uploaded file is too large (%d bytes). Maximum allowed is %d bytes.", fileSize, maxSize)
             );
         }
         Channel channel = getOrCreateChannel(broadcaster);
         byte[] bytes = file.getBytes();
-        String mediaType = mediaDetectionService.detectAllowedMediaType(file, bytes)
-                .orElseThrow(() -> new ResponseStatusException(
-                        BAD_REQUEST, "Unsupported media type"));
+        String mediaType = mediaDetectionService
+            .detectAllowedMediaType(file, bytes)
+            .orElseThrow(() -> new ResponseStatusException(BAD_REQUEST, "Unsupported media type"));
 
         OptimizedAsset optimized = mediaOptimizationService.optimizeAsset(bytes, mediaType);
         if (optimized == null) {
@@ -157,32 +145,29 @@ public class ChannelDirectoryService {
         }
 
         String safeName = Optional.ofNullable(file.getOriginalFilename())
-                .map(this::sanitizeFilename)
-                .filter(s -> !s.isBlank())
-                .orElse("asset_" + System.currentTimeMillis());
+            .map(this::sanitizeFilename)
+            .filter((s) -> !s.isBlank())
+            .orElse("asset_" + System.currentTimeMillis());
 
-        double width = optimized.width() > 0 ? optimized.width() :
-                (optimized.mediaType().startsWith("audio/") ? 400 : 640);
-        double height = optimized.height() > 0 ? optimized.height() :
-                (optimized.mediaType().startsWith("audio/") ? 80 : 360);
+        double width = optimized.width() > 0
+            ? optimized.width()
+            : (optimized.mediaType().startsWith("audio/") ? 400 : 640);
+        double height = optimized.height() > 0
+            ? optimized.height()
+            : (optimized.mediaType().startsWith("audio/") ? 80 : 360);
 
-        Asset asset = new Asset(channel.getBroadcaster(), safeName, "",
-                width, height);
+        Asset asset = new Asset(channel.getBroadcaster(), safeName, "", width, height);
         asset.setOriginalMediaType(mediaType);
         asset.setMediaType(optimized.mediaType());
 
         assetStorageService.storeAsset(
-                channel.getBroadcaster(),
-                asset.getId(),
-                optimized.bytes(),
-                optimized.mediaType()
+            channel.getBroadcaster(),
+            asset.getId(),
+            optimized.bytes(),
+            optimized.mediaType()
         );
 
-        assetStorageService.storePreview(
-                channel.getBroadcaster(),
-                asset.getId(),
-                optimized.previewBytes()
-        );
+        assetStorageService.storePreview(channel.getBroadcaster(), asset.getId(), optimized.previewBytes());
         asset.setPreview(optimized.previewBytes() != null ? asset.getId() + ".png" : "");
 
         asset.setSpeed(1.0);
@@ -197,8 +182,7 @@ public class ChannelDirectoryService {
         assetRepository.save(asset);
 
         AssetView view = AssetView.from(channel.getBroadcaster(), asset);
-        messagingTemplate.convertAndSend(topicFor(broadcaster),
-                AssetEvent.created(broadcaster, view));
+        messagingTemplate.convertAndSend(topicFor(broadcaster), AssetEvent.created(broadcaster, view));
 
         return Optional.of(view);
     }
@@ -211,37 +195,37 @@ public class ChannelDirectoryService {
     public Optional<AssetView> updateTransform(String broadcaster, String assetId, TransformRequest req) {
         String normalized = normalize(broadcaster);
 
-        return assetRepository.findById(assetId)
-                .filter(asset -> normalized.equals(asset.getBroadcaster()))
-                .map(asset -> {
-                    AssetPatch.TransformSnapshot before = AssetPatch.capture(asset);
-                    validateTransform(req);
+        return assetRepository
+            .findById(assetId)
+            .filter((asset) -> normalized.equals(asset.getBroadcaster()))
+            .map((asset) -> {
+                AssetPatch.TransformSnapshot before = AssetPatch.capture(asset);
+                validateTransform(req);
 
-                    asset.setX(req.getX());
-                    asset.setY(req.getY());
-                    asset.setWidth(req.getWidth());
-                    asset.setHeight(req.getHeight());
-                    asset.setRotation(req.getRotation());
+                asset.setX(req.getX());
+                asset.setY(req.getY());
+                asset.setWidth(req.getWidth());
+                asset.setHeight(req.getHeight());
+                asset.setRotation(req.getRotation());
 
-                    if (req.getZIndex() != null) asset.setZIndex(req.getZIndex());
-                    if (req.getSpeed() != null) asset.setSpeed(req.getSpeed());
-                    if (req.getMuted() != null && asset.isVideo()) asset.setMuted(req.getMuted());
-                    if (req.getAudioLoop() != null) asset.setAudioLoop(req.getAudioLoop());
-                    if (req.getAudioDelayMillis() != null) asset.setAudioDelayMillis(req.getAudioDelayMillis());
-                    if (req.getAudioSpeed() != null) asset.setAudioSpeed(req.getAudioSpeed());
-                    if (req.getAudioPitch() != null) asset.setAudioPitch(req.getAudioPitch());
-                    if (req.getAudioVolume() != null) asset.setAudioVolume(req.getAudioVolume());
+                if (req.getZIndex() != null) asset.setZIndex(req.getZIndex());
+                if (req.getSpeed() != null) asset.setSpeed(req.getSpeed());
+                if (req.getMuted() != null && asset.isVideo()) asset.setMuted(req.getMuted());
+                if (req.getAudioLoop() != null) asset.setAudioLoop(req.getAudioLoop());
+                if (req.getAudioDelayMillis() != null) asset.setAudioDelayMillis(req.getAudioDelayMillis());
+                if (req.getAudioSpeed() != null) asset.setAudioSpeed(req.getAudioSpeed());
+                if (req.getAudioPitch() != null) asset.setAudioPitch(req.getAudioPitch());
+                if (req.getAudioVolume() != null) asset.setAudioVolume(req.getAudioVolume());
 
-                    assetRepository.save(asset);
+                assetRepository.save(asset);
 
-                    AssetView view = AssetView.from(normalized, asset);
-                    AssetPatch patch = AssetPatch.fromTransform(before, asset, req);
-                    if (hasPatchChanges(patch)) {
-                        messagingTemplate.convertAndSend(topicFor(broadcaster),
-                                AssetEvent.updated(broadcaster, patch));
-                    }
-                    return view;
-                });
+                AssetView view = AssetView.from(normalized, asset);
+                AssetPatch patch = AssetPatch.fromTransform(before, asset, req);
+                if (hasPatchChanges(patch)) {
+                    messagingTemplate.convertAndSend(topicFor(broadcaster), AssetEvent.updated(broadcaster, patch));
+                }
+                return view;
+            });
     }
 
     private void validateTransform(TransformRequest req) {
@@ -254,68 +238,90 @@ public class ChannelDirectoryService {
         double maxVolume = settings.getMaxAssetVolumeFraction();
         int canvasMaxSizePixels = settings.getMaxCanvasSideLengthPixels();
 
-        if (req.getWidth() <= 0 || req.getWidth() > canvasMaxSizePixels) 
-            throw new ResponseStatusException(BAD_REQUEST, "Canvas width out of range [0 to " + canvasMaxSizePixels + "]");
-        if (req.getHeight() <= 0) 
-            throw new ResponseStatusException(BAD_REQUEST, "Canvas height out of range [0 to " + canvasMaxSizePixels + "]");
-        if (req.getSpeed() != null && (req.getSpeed() < minSpeed || req.getSpeed() > maxSpeed))
-            throw new ResponseStatusException(BAD_REQUEST, "Speed out of range [" + minSpeed + " to " + maxSpeed + "]");
-        if (req.getZIndex() != null && req.getZIndex() < 1)
-            throw new ResponseStatusException(BAD_REQUEST, "zIndex must be >= 1");
-        if (req.getAudioDelayMillis() != null && req.getAudioDelayMillis() < 0)
-            throw new ResponseStatusException(BAD_REQUEST, "Audio delay >= 0");
-        if (req.getAudioSpeed() != null && (req.getAudioSpeed() < minSpeed || req.getAudioSpeed() > maxSpeed))
-            throw new ResponseStatusException(BAD_REQUEST, "Audio speed out of range");
-        if (req.getAudioPitch() != null && (req.getAudioPitch() < minPitch || req.getAudioPitch() > maxPitch))
-            throw new ResponseStatusException(BAD_REQUEST, "Audio pitch out of range");
-        if (req.getAudioVolume() != null && (req.getAudioVolume() < minVolume || req.getAudioVolume() > maxVolume))
-            throw new ResponseStatusException(BAD_REQUEST, "Audio volume out of range [" + minVolume + " to " + maxVolume + "]");
+        if (req.getWidth() <= 0 || req.getWidth() > canvasMaxSizePixels) throw new ResponseStatusException(
+            BAD_REQUEST,
+            "Canvas width out of range [0 to " + canvasMaxSizePixels + "]"
+        );
+        if (req.getHeight() <= 0) throw new ResponseStatusException(
+            BAD_REQUEST,
+            "Canvas height out of range [0 to " + canvasMaxSizePixels + "]"
+        );
+        if (
+            req.getSpeed() != null && (req.getSpeed() < minSpeed || req.getSpeed() > maxSpeed)
+        ) throw new ResponseStatusException(BAD_REQUEST, "Speed out of range [" + minSpeed + " to " + maxSpeed + "]");
+        if (req.getZIndex() != null && req.getZIndex() < 1) throw new ResponseStatusException(
+            BAD_REQUEST,
+            "zIndex must be >= 1"
+        );
+        if (req.getAudioDelayMillis() != null && req.getAudioDelayMillis() < 0) throw new ResponseStatusException(
+            BAD_REQUEST,
+            "Audio delay >= 0"
+        );
+        if (
+            req.getAudioSpeed() != null && (req.getAudioSpeed() < minSpeed || req.getAudioSpeed() > maxSpeed)
+        ) throw new ResponseStatusException(BAD_REQUEST, "Audio speed out of range");
+        if (
+            req.getAudioPitch() != null && (req.getAudioPitch() < minPitch || req.getAudioPitch() > maxPitch)
+        ) throw new ResponseStatusException(BAD_REQUEST, "Audio pitch out of range");
+        if (
+            req.getAudioVolume() != null && (req.getAudioVolume() < minVolume || req.getAudioVolume() > maxVolume)
+        ) throw new ResponseStatusException(
+            BAD_REQUEST,
+            "Audio volume out of range [" + minVolume + " to " + maxVolume + "]"
+        );
     }
 
     public Optional<AssetView> triggerPlayback(String broadcaster, String assetId, PlaybackRequest req) {
         String normalized = normalize(broadcaster);
-        return assetRepository.findById(assetId)
-                .filter(a -> normalized.equals(a.getBroadcaster()))
-                .map(asset -> {
-                    AssetView view = AssetView.from(normalized, asset);
-                    boolean play = req == null || req.getPlay();
-                    messagingTemplate.convertAndSend(topicFor(broadcaster),
-                            AssetEvent.play(broadcaster, view, play));
-                    return view;
-                });
+        return assetRepository
+            .findById(assetId)
+            .filter((a) -> normalized.equals(a.getBroadcaster()))
+            .map((asset) -> {
+                AssetView view = AssetView.from(normalized, asset);
+                boolean play = req == null || req.getPlay();
+                messagingTemplate.convertAndSend(topicFor(broadcaster), AssetEvent.play(broadcaster, view, play));
+                return view;
+            });
     }
 
     public Optional<AssetView> updateVisibility(String broadcaster, String assetId, VisibilityRequest request) {
         String normalized = normalize(broadcaster);
-        return assetRepository.findById(assetId)
-                .filter(a -> normalized.equals(a.getBroadcaster()))
-                .map(asset -> {
-                    boolean wasHidden = asset.isHidden();
-                    boolean hidden = request.isHidden();
-                    if (wasHidden == hidden) {
-                        return AssetView.from(normalized, asset);
-                    }
+        return assetRepository
+            .findById(assetId)
+            .filter((a) -> normalized.equals(a.getBroadcaster()))
+            .map((asset) -> {
+                boolean wasHidden = asset.isHidden();
+                boolean hidden = request.isHidden();
+                if (wasHidden == hidden) {
+                    return AssetView.from(normalized, asset);
+                }
 
-                    asset.setHidden(hidden);
-                    assetRepository.save(asset);
-                    AssetView view = AssetView.from(normalized, asset);
-                    AssetPatch patch = AssetPatch.fromVisibility(asset);
-                    AssetView payload = hidden ? null : view;
-                    messagingTemplate.convertAndSend(topicFor(broadcaster), AssetEvent.visibility(broadcaster, patch, payload));
-                    return view;
-                });
+                asset.setHidden(hidden);
+                assetRepository.save(asset);
+                AssetView view = AssetView.from(normalized, asset);
+                AssetPatch patch = AssetPatch.fromVisibility(asset);
+                AssetView payload = hidden ? null : view;
+                messagingTemplate.convertAndSend(
+                    topicFor(broadcaster),
+                    AssetEvent.visibility(broadcaster, patch, payload)
+                );
+                return view;
+            });
     }
 
     public boolean deleteAsset(String assetId) {
-        return assetRepository.findById(assetId)
-                .map(asset -> {
-                    assetRepository.delete(asset);
-                    assetStorageService.deleteAsset(asset);
-                    messagingTemplate.convertAndSend(topicFor(asset.getBroadcaster()),
-                            AssetEvent.deleted(asset.getBroadcaster(), assetId));
-                    return true;
-                })
-                .orElse(false);
+        return assetRepository
+            .findById(assetId)
+            .map((asset) -> {
+                assetRepository.delete(asset);
+                assetStorageService.deleteAsset(asset);
+                messagingTemplate.convertAndSend(
+                    topicFor(asset.getBroadcaster()),
+                    AssetEvent.deleted(asset.getBroadcaster(), assetId)
+                );
+                return true;
+            })
+            .orElse(false);
     }
 
     public Optional<AssetContent> getAssetContent(String assetId) {
@@ -323,25 +329,29 @@ public class ChannelDirectoryService {
     }
 
     public Optional<AssetContent> getAssetPreview(String assetId, boolean includeHidden) {
-        return assetRepository.findById(assetId)
-                .filter(a -> includeHidden || !a.isHidden())
-                .flatMap(assetStorageService::loadPreviewSafely);
+        return assetRepository
+            .findById(assetId)
+            .filter((a) -> includeHidden || !a.isHidden())
+            .flatMap(assetStorageService::loadPreviewSafely);
     }
 
     public boolean isAdmin(String broadcaster, String username) {
-        return channelRepository.findById(normalize(broadcaster))
-                .map(Channel::getAdmins)
-                .map(admins -> admins.contains(normalize(username)))
-                .orElse(false);
+        return channelRepository
+            .findById(normalize(broadcaster))
+            .map(Channel::getAdmins)
+            .map((admins) -> admins.contains(normalize(username)))
+            .orElse(false);
     }
 
     public Collection<String> adminChannelsFor(String username) {
         if (username == null) return List.of();
         String login = username.toLowerCase();
-        return channelRepository.findAll().stream()
-                .filter(c -> c.getAdmins().contains(login))
-                .map(Channel::getBroadcaster)
-                .toList();
+        return channelRepository
+            .findAll()
+            .stream()
+            .filter((c) -> c.getAdmins().contains(login))
+            .map(Channel::getBroadcaster)
+            .toList();
     }
 
     private String normalize(String value) {
@@ -353,35 +363,46 @@ public class ChannelDirectoryService {
     }
 
     private List<AssetView> sortAndMapAssets(String broadcaster, Collection<Asset> assets) {
-        return assets.stream()
-                .sorted(Comparator.comparingInt(Asset::getZIndex)
-                        .thenComparing(Asset::getCreatedAt, Comparator.nullsFirst(Comparator.naturalOrder())))
-                .map(a -> AssetView.from(broadcaster, a))
-                .toList();
+        return assets
+            .stream()
+            .sorted(
+                Comparator.comparingInt(Asset::getZIndex).thenComparing(
+                    Asset::getCreatedAt,
+                    Comparator.nullsFirst(Comparator.naturalOrder())
+                )
+            )
+            .map((a) -> AssetView.from(broadcaster, a))
+            .toList();
     }
 
     private int nextZIndex(String broadcaster) {
-        return assetRepository.findByBroadcaster(normalize(broadcaster))
+        return (
+            assetRepository
+                .findByBroadcaster(normalize(broadcaster))
                 .stream()
                 .mapToInt(Asset::getZIndex)
                 .max()
-                .orElse(0) + 1;
+                .orElse(0) +
+            1
+        );
     }
 
     private boolean hasPatchChanges(AssetPatch patch) {
-        return patch.x() != null
-                || patch.y() != null
-                || patch.width() != null
-                || patch.height() != null
-                || patch.rotation() != null
-                || patch.speed() != null
-                || patch.muted() != null
-                || patch.zIndex() != null
-                || patch.hidden() != null
-                || patch.audioLoop() != null
-                || patch.audioDelayMillis() != null
-                || patch.audioSpeed() != null
-                || patch.audioPitch() != null
-                || patch.audioVolume() != null;
+        return (
+            patch.x() != null ||
+            patch.y() != null ||
+            patch.width() != null ||
+            patch.height() != null ||
+            patch.rotation() != null ||
+            patch.speed() != null ||
+            patch.muted() != null ||
+            patch.zIndex() != null ||
+            patch.hidden() != null ||
+            patch.audioLoop() != null ||
+            patch.audioDelayMillis() != null ||
+            patch.audioSpeed() != null ||
+            patch.audioPitch() != null ||
+            patch.audioVolume() != null
+        );
     }
 }

src/main/java/dev/kruhlmann/imgfloat/service/SettingsService.java

@@ -1,10 +1,9 @@
 package dev.kruhlmann.imgfloat.service;
 
-import dev.kruhlmann.imgfloat.model.Settings;
-import dev.kruhlmann.imgfloat.repository.SettingsRepository;
-
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import dev.kruhlmann.imgfloat.model.Settings;
+import dev.kruhlmann.imgfloat.repository.SettingsRepository;
 import jakarta.annotation.PostConstruct;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -12,6 +11,7 @@ import org.springframework.stereotype.Service;
 
 @Service
 public class SettingsService {
+
     private static final Logger logger = LoggerFactory.getLogger(SettingsService.class);
 
     private final SettingsRepository repo;
@@ -44,12 +44,7 @@ public class SettingsService {
 
     public void logSettings(String msg, Settings settings) {
         try {
-            logger.info("{}:\n{}",
-                msg,
-                objectMapper
-                    .writerWithDefaultPrettyPrinter()
-                    .writeValueAsString(settings)
-            );
+            logger.info("{}:\n{}", msg, objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(settings));
         } catch (JsonProcessingException e) {
             logger.error("Failed to serialize settings", e);
         }

src/main/java/dev/kruhlmann/imgfloat/service/SystemAdministratorService.java

@@ -3,29 +3,26 @@ package dev.kruhlmann.imgfloat.service;
 import dev.kruhlmann.imgfloat.model.SystemAdministrator;
 import dev.kruhlmann.imgfloat.repository.SystemAdministratorRepository;
 import jakarta.annotation.PostConstruct;
+import java.util.Locale;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.stereotype.Service;
 import org.springframework.core.env.Environment;
-
-import java.util.Locale;
+import org.springframework.stereotype.Service;
 
 @Service
 public class SystemAdministratorService {
 
-    private static final Logger logger =
-            LoggerFactory.getLogger(SystemAdministratorService.class);
+    private static final Logger logger = LoggerFactory.getLogger(SystemAdministratorService.class);
 
     private final SystemAdministratorRepository repo;
     private final String initialSysadmin;
     private final Environment environment;
 
     public SystemAdministratorService(
-            SystemAdministratorRepository repo,
-            @Value("${IMGFLOAT_INITIAL_TWITCH_USERNAME_SYSADMIN:#{null}}")
-            String initialSysadmin,
-            Environment environment
+        SystemAdministratorRepository repo,
+        @Value("${IMGFLOAT_INITIAL_TWITCH_USERNAME_SYSADMIN:#{null}}") String initialSysadmin,
+        Environment environment
     ) {
         this.repo = repo;
         this.initialSysadmin = initialSysadmin;
@@ -38,7 +35,11 @@ public class SystemAdministratorService {
             return;
         }
 
-        if (Boolean.parseBoolean(environment.getProperty("org.springframework.boot.test.context.SpringBootTestContextBootstrapper"))) {
+        if (
+            Boolean.parseBoolean(
+                environment.getProperty("org.springframework.boot.test.context.SpringBootTestContextBootstrapper")
+            )
+        ) {
             logger.info("Skipping system administrator bootstrap in test context");
             return;
         }
@@ -65,17 +66,13 @@ public class SystemAdministratorService {
 
     public void removeSysadmin(String twitchUsername) {
         if (repo.count() <= 1) {
-            throw new IllegalStateException(
-                "Cannot remove the last system administrator"
-            );
+            throw new IllegalStateException("Cannot remove the last system administrator");
         }
 
         long deleted = repo.deleteByTwitchUsername(normalize(twitchUsername));
 
         if (deleted == 0) {
-            throw new IllegalArgumentException(
-                "System administrator does not exist"
-            );
+            throw new IllegalArgumentException("System administrator does not exist");
         }
     }
 

src/main/java/dev/kruhlmann/imgfloat/service/TwitchUserLookupService.java

@@ -1,8 +1,22 @@
 package dev.kruhlmann.imgfloat.service;
 
-import dev.kruhlmann.imgfloat.model.TwitchUserProfile;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import dev.kruhlmann.imgfloat.model.TwitchUserProfile;
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.function.Function;
+import java.util.stream.Collectors;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.boot.web.client.RestTemplateBuilder;
@@ -15,31 +29,17 @@ import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestTemplate;
 import org.springframework.web.util.UriComponentsBuilder;
 
-import java.time.Duration;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Objects;
-import java.util.function.Function;
-import java.util.stream.Collectors;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.Optional;
-
 @Service
 public class TwitchUserLookupService {
+
     private static final Logger LOG = LoggerFactory.getLogger(TwitchUserLookupService.class);
     private final RestTemplate restTemplate;
 
     public TwitchUserLookupService(RestTemplateBuilder builder) {
         this.restTemplate = builder
-                .setConnectTimeout(Duration.ofSeconds(15))
-                .setReadTimeout(Duration.ofSeconds(15))
-                .build();
+            .setConnectTimeout(Duration.ofSeconds(15))
+            .setReadTimeout(Duration.ofSeconds(15))
+            .build();
     }
 
     public List<TwitchUserProfile> fetchProfiles(Collection<String> logins, String accessToken, String clientId) {
@@ -47,23 +47,27 @@ public class TwitchUserLookupService {
             return List.of();
         }
 
-        List<String> normalizedLogins = logins.stream()
-                .filter(Objects::nonNull)
-                .map(login -> login.toLowerCase(Locale.ROOT))
-                .distinct()
-                .toList();
+        List<String> normalizedLogins = logins
+            .stream()
+            .filter(Objects::nonNull)
+            .map((login) -> login.toLowerCase(Locale.ROOT))
+            .distinct()
+            .toList();
 
         Map<String, TwitchUserData> byLogin = fetchUsers(normalizedLogins, accessToken, clientId);
 
-        return normalizedLogins.stream()
-                .map(login -> toProfile(login, byLogin.get(login)))
-                .toList();
+        return normalizedLogins
+            .stream()
+            .map((login) -> toProfile(login, byLogin.get(login)))
+            .toList();
     }
 
-    public List<TwitchUserProfile> fetchModerators(String broadcasterLogin,
-                                                   Collection<String> existingAdmins,
-                                                   String accessToken,
-                                                   String clientId) {
+    public List<TwitchUserProfile> fetchModerators(
+        String broadcasterLogin,
+        Collection<String> existingAdmins,
+        String accessToken,
+        String clientId
+    ) {
         if (broadcasterLogin == null || broadcasterLogin.isBlank()) {
             LOG.warn("Cannot fetch moderators without a broadcaster login");
             return List.of();
@@ -77,8 +81,8 @@ public class TwitchUserLookupService {
         String normalizedBroadcaster = broadcasterLogin.toLowerCase(Locale.ROOT);
         Map<String, TwitchUserData> broadcasterData = fetchUsers(List.of(normalizedBroadcaster), accessToken, clientId);
         String broadcasterId = Optional.ofNullable(broadcasterData.get(normalizedBroadcaster))
-                .map(TwitchUserData::id)
-                .orElse(null);
+            .map(TwitchUserData::id)
+            .orElse(null);
 
         if (broadcasterId == null || broadcasterId.isBlank()) {
             LOG.warn("No broadcaster id found for {} when fetching moderators", broadcasterLogin);
@@ -87,10 +91,11 @@ public class TwitchUserLookupService {
 
         Set<String> skipLogins = new HashSet<>();
         if (existingAdmins != null) {
-            existingAdmins.stream()
-                    .filter(Objects::nonNull)
-                    .map(login -> login.toLowerCase(Locale.ROOT))
-                    .forEach(skipLogins::add);
+            existingAdmins
+                .stream()
+                .filter(Objects::nonNull)
+                .map((login) -> login.toLowerCase(Locale.ROOT))
+                .forEach(skipLogins::add);
         }
         skipLogins.add(normalizedBroadcaster);
 
@@ -102,36 +107,43 @@ public class TwitchUserLookupService {
         String cursor = null;
 
         do {
-            UriComponentsBuilder builder = UriComponentsBuilder
-                    .fromHttpUrl("https://api.twitch.tv/helix/moderation/moderators")
-                    .queryParam("broadcaster_id", broadcasterId)
-                    .queryParam("first", 100);
+            UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(
+                "https://api.twitch.tv/helix/moderation/moderators"
+            )
+                .queryParam("broadcaster_id", broadcasterId)
+                .queryParam("first", 100);
             if (cursor != null && !cursor.isBlank()) {
                 builder.queryParam("after", cursor);
             }
 
             try {
                 ResponseEntity<TwitchModeratorsResponse> response = restTemplate.exchange(
-                        builder.build(true).toUri(),
-                        HttpMethod.GET,
-                        new HttpEntity<>(headers),
-                        TwitchModeratorsResponse.class);
+                    builder.build(true).toUri(),
+                    HttpMethod.GET,
+                    new HttpEntity<>(headers),
+                    TwitchModeratorsResponse.class
+                );
 
                 TwitchModeratorsResponse body = response.getBody();
-                LOG.debug("Fetched {} moderator records for {} (cursor={})", body != null && body.data() != null ? body.data().size() : 0, broadcasterLogin, cursor);
+                LOG.debug(
+                    "Fetched {} moderator records for {} (cursor={})",
+                    body != null && body.data() != null ? body.data().size() : 0,
+                    broadcasterLogin,
+                    cursor
+                );
                 if (body != null && body.data() != null) {
-                    body.data().stream()
-                            .filter(Objects::nonNull)
-                            .map(ModeratorData::userLogin)
-                            .filter(Objects::nonNull)
-                            .map(login -> login.toLowerCase(Locale.ROOT))
-                            .filter(login -> !skipLogins.contains(login))
-                            .forEach(moderatorLogins::add);
+                    body
+                        .data()
+                        .stream()
+                        .filter(Objects::nonNull)
+                        .map(ModeratorData::userLogin)
+                        .filter(Objects::nonNull)
+                        .map((login) -> login.toLowerCase(Locale.ROOT))
+                        .filter((login) -> !skipLogins.contains(login))
+                        .forEach(moderatorLogins::add);
                 }
 
-                cursor = body != null && body.pagination() != null
-                        ? body.pagination().cursor()
-                        : null;
+                cursor = body != null && body.pagination() != null ? body.pagination().cursor() : null;
             } catch (RestClientException ex) {
                 LOG.warn("Unable to fetch Twitch moderators for {}", broadcasterLogin, ex);
                 return List.of();
@@ -158,11 +170,12 @@ public class TwitchUserLookupService {
             return Collections.emptyMap();
         }
 
-        List<String> normalizedLogins = logins.stream()
-                .filter(Objects::nonNull)
-                .map(login -> login.toLowerCase(Locale.ROOT))
-                .distinct()
-                .toList();
+        List<String> normalizedLogins = logins
+            .stream()
+            .filter(Objects::nonNull)
+            .map((login) -> login.toLowerCase(Locale.ROOT))
+            .distinct()
+            .toList();
 
         if (accessToken == null || accessToken.isBlank() || clientId == null || clientId.isBlank()) {
             return Collections.emptyMap();
@@ -172,27 +185,33 @@ public class TwitchUserLookupService {
         headers.setBearerAuth(accessToken);
         headers.add("Client-ID", clientId);
 
-        UriComponentsBuilder uriBuilder = UriComponentsBuilder
-                .fromHttpUrl("https://api.twitch.tv/helix/users");
-        normalizedLogins.forEach(login -> uriBuilder.queryParam("login", login));
+        UriComponentsBuilder uriBuilder = UriComponentsBuilder.fromHttpUrl("https://api.twitch.tv/helix/users");
+        normalizedLogins.forEach((login) -> uriBuilder.queryParam("login", login));
 
         HttpEntity<Void> entity = new HttpEntity<>(headers);
         try {
             ResponseEntity<TwitchUsersResponse> response = restTemplate.exchange(
-                    uriBuilder.build(true).toUri(),
-                    HttpMethod.GET,
-                    entity,
-                    TwitchUsersResponse.class);
+                uriBuilder.build(true).toUri(),
+                HttpMethod.GET,
+                entity,
+                TwitchUsersResponse.class
+            );
 
             return response.getBody() == null
-                    ? Collections.emptyMap()
-                    : response.getBody().data().stream()
-                    .filter(Objects::nonNull)
-                    .collect(Collectors.toMap(
-                            user -> user.login().toLowerCase(Locale.ROOT),
-                            Function.identity(),
-                            (a, b) -> a,
-                            HashMap::new));
+                ? Collections.emptyMap()
+                : response
+                      .getBody()
+                      .data()
+                      .stream()
+                      .filter(Objects::nonNull)
+                      .collect(
+                          Collectors.toMap(
+                              (user) -> user.login().toLowerCase(Locale.ROOT),
+                              Function.identity(),
+                              (a, b) -> a,
+                              HashMap::new
+                          )
+                      );
         } catch (RestClientException ex) {
             LOG.warn("Unable to fetch Twitch user profiles", ex);
             return Collections.emptyMap();
@@ -200,31 +219,26 @@ public class TwitchUserLookupService {
     }
 
     @JsonIgnoreProperties(ignoreUnknown = true)
-    private record TwitchUsersResponse(List<TwitchUserData> data) {
-    }
+    private record TwitchUsersResponse(List<TwitchUserData> data) {}
 
     @JsonIgnoreProperties(ignoreUnknown = true)
     private record TwitchUserData(
-            String id,
-            String login,
-            @JsonProperty("display_name") String displayName,
-            @JsonProperty("profile_image_url") String profileImageUrl) {
-    }
+        String id,
+        String login,
+        @JsonProperty("display_name") String displayName,
+        @JsonProperty("profile_image_url") String profileImageUrl
+    ) {}
 
     @JsonIgnoreProperties(ignoreUnknown = true)
-    private record TwitchModeratorsResponse(
-            List<ModeratorData> data,
-            Pagination pagination) {
-    }
+    private record TwitchModeratorsResponse(List<ModeratorData> data, Pagination pagination) {}
 
     @JsonIgnoreProperties(ignoreUnknown = true)
     private record ModeratorData(
-            @JsonProperty("user_id") String userId,
-            @JsonProperty("user_login") String userLogin,
-            @JsonProperty("user_name") String userName) {
-    }
+        @JsonProperty("user_id") String userId,
+        @JsonProperty("user_login") String userLogin,
+        @JsonProperty("user_name") String userName
+    ) {}
 
     @JsonIgnoreProperties(ignoreUnknown = true)
-    private record Pagination(String cursor) {
-    }
+    private record Pagination(String cursor) {}
 }

src/main/java/dev/kruhlmann/imgfloat/service/VersionService.java

@@ -1,17 +1,17 @@
 package dev.kruhlmann.imgfloat.service;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
-
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
 
 @Component
 public class VersionService {
+
     private static final Logger LOG = LoggerFactory.getLogger(VersionService.class);
     private final String version;
     private final String releaseVersion;
@@ -58,7 +58,9 @@ public class VersionService {
     }
 
     private String getPomVersion() {
-        try (var inputStream = getClass().getResourceAsStream("/META-INF/maven/dev.kruhlmann/imgfloat/pom.properties")) {
+        try (
+            var inputStream = getClass().getResourceAsStream("/META-INF/maven/dev.kruhlmann/imgfloat/pom.properties")
+        ) {
             if (inputStream == null) {
                 return null;
             }

src/main/java/dev/kruhlmann/imgfloat/service/media/AssetContent.java

@@ -1,3 +1,3 @@
 package dev.kruhlmann.imgfloat.service.media;
 
-public record AssetContent(byte[] bytes, String mediaType) { }
+public record AssetContent(byte[] bytes, String mediaType) {}

src/main/java/dev/kruhlmann/imgfloat/service/media/MediaDetectionService.java

@@ -1,53 +1,53 @@
 package dev.kruhlmann.imgfloat.service.media;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Service;
-import org.springframework.web.multipart.MultipartFile;
-
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.net.URLConnection;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
 
 @Service
 public class MediaDetectionService {
+
     private static final Logger logger = LoggerFactory.getLogger(MediaDetectionService.class);
     private static final Map<String, String> EXTENSION_TYPES = Map.ofEntries(
-            Map.entry("png", "image/png"),
-            Map.entry("jpg", "image/jpeg"),
-            Map.entry("jpeg", "image/jpeg"),
-            Map.entry("gif", "image/gif"),
-            Map.entry("webp", "image/webp"),
-            Map.entry("mp4", "video/mp4"),
-            Map.entry("webm", "video/webm"),
-            Map.entry("mov", "video/quicktime"),
-            Map.entry("mp3", "audio/mpeg"),
-            Map.entry("wav", "audio/wav"),
-            Map.entry("ogg", "audio/ogg")
+        Map.entry("png", "image/png"),
+        Map.entry("jpg", "image/jpeg"),
+        Map.entry("jpeg", "image/jpeg"),
+        Map.entry("gif", "image/gif"),
+        Map.entry("webp", "image/webp"),
+        Map.entry("mp4", "video/mp4"),
+        Map.entry("webm", "video/webm"),
+        Map.entry("mov", "video/quicktime"),
+        Map.entry("mp3", "audio/mpeg"),
+        Map.entry("wav", "audio/wav"),
+        Map.entry("ogg", "audio/ogg")
     );
     private static final Set<String> ALLOWED_MEDIA_TYPES = Set.copyOf(EXTENSION_TYPES.values());
 
     public Optional<String> detectAllowedMediaType(MultipartFile file, byte[] bytes) {
-        Optional<String> detected = detectMediaType(bytes)
-                .filter(MediaDetectionService::isAllowedMediaType);
+        Optional<String> detected = detectMediaType(bytes).filter(MediaDetectionService::isAllowedMediaType);
 
         if (detected.isPresent()) {
             return detected;
         }
 
-        Optional<String> declared = Optional.ofNullable(file.getContentType())
-                .filter(MediaDetectionService::isAllowedMediaType);
+        Optional<String> declared = Optional.ofNullable(file.getContentType()).filter(
+            MediaDetectionService::isAllowedMediaType
+        );
         if (declared.isPresent()) {
             return declared;
         }
 
         return Optional.ofNullable(file.getOriginalFilename())
-                .map(name -> name.replaceAll("^.*\\.", "").toLowerCase())
-                .map(EXTENSION_TYPES::get)
-                .filter(MediaDetectionService::isAllowedMediaType);
+            .map((name) -> name.replaceAll("^.*\\.", "").toLowerCase())
+            .map(EXTENSION_TYPES::get)
+            .filter(MediaDetectionService::isAllowedMediaType);
     }
 
     private Optional<String> detectMediaType(byte[] bytes) {
@@ -68,6 +68,9 @@ public class MediaDetectionService {
     }
 
     public static boolean isInlineDisplayType(String mediaType) {
-        return mediaType != null && (mediaType.startsWith("image/") || mediaType.startsWith("video/") || mediaType.startsWith("audio/"));
+        return (
+            mediaType != null &&
+            (mediaType.startsWith("image/") || mediaType.startsWith("video/") || mediaType.startsWith("audio/"))
+        );
     }
 }

src/main/java/dev/kruhlmann/imgfloat/service/media/MediaOptimizationService.java

@@ -1,20 +1,5 @@
 package dev.kruhlmann.imgfloat.service.media;
 
-import org.jcodec.api.FrameGrab;
-import org.jcodec.api.JCodecException;
-import org.jcodec.common.io.ByteBufferSeekableByteChannel;
-import org.jcodec.common.model.Picture;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Service;
-
-import javax.imageio.IIOImage;
-import javax.imageio.ImageIO;
-import javax.imageio.ImageWriteParam;
-import javax.imageio.ImageWriter;
-import javax.imageio.metadata.IIOMetadata;
-import javax.imageio.stream.ImageInputStream;
-import javax.imageio.stream.ImageOutputStream;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -24,9 +9,24 @@ import java.nio.ByteBuffer;
 import java.nio.file.Files;
 import java.util.List;
 import java.util.Optional;
+import javax.imageio.IIOImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.stream.ImageInputStream;
+import javax.imageio.stream.ImageOutputStream;
+import org.jcodec.api.FrameGrab;
+import org.jcodec.api.JCodecException;
+import org.jcodec.common.io.ByteBufferSeekableByteChannel;
+import org.jcodec.common.model.Picture;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
 
 @Service
 public class MediaOptimizationService {
+
     private static final int MIN_GIF_DELAY_MS = 20;
     private static final Logger logger = LoggerFactory.getLogger(MediaOptimizationService.class);
     private final MediaPreviewService previewService;
@@ -86,10 +86,11 @@ public class MediaOptimizationService {
             if (frames.isEmpty()) {
                 return null;
             }
-            int baseDelay = frames.stream()
-                    .mapToInt(frame -> normalizeDelay(frame.delayMs()))
-                    .reduce(this::greatestCommonDivisor)
-                    .orElse(100);
+            int baseDelay = frames
+                .stream()
+                .mapToInt((frame) -> normalizeDelay(frame.delayMs()))
+                .reduce(this::greatestCommonDivisor)
+                .orElse(100);
             int fps = Math.max(1, (int) Math.round(1000.0 / baseDelay));
             File temp = File.createTempFile("gif-convert", ".mp4");
             temp.deleteOnExit();
@@ -104,7 +105,13 @@ public class MediaOptimizationService {
                 encoder.finish();
                 BufferedImage cover = frames.get(0).image();
                 byte[] video = Files.readAllBytes(temp.toPath());
-                return new OptimizedAsset(video, "video/mp4", cover.getWidth(), cover.getHeight(), previewService.encodePreview(cover));
+                return new OptimizedAsset(
+                    video,
+                    "video/mp4",
+                    cover.getWidth(),
+                    cover.getHeight(),
+                    previewService.encodePreview(cover)
+                );
             } finally {
                 Files.deleteIfExists(temp.toPath());
             }
@@ -183,8 +190,10 @@ public class MediaOptimizationService {
             }
         }
         ImageWriter writer = writers.next();
-        try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
-             ImageOutputStream ios = ImageIO.createImageOutputStream(baos)) {
+        try (
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            ImageOutputStream ios = ImageIO.createImageOutputStream(baos)
+        ) {
             writer.setOutput(ios);
             ImageWriteParam param = writer.getDefaultWriteParam();
             if (param.canWriteCompressed()) {
@@ -211,7 +220,7 @@ public class MediaOptimizationService {
         return new Dimension(640, 360);
     }
 
-    private record GifFrame(BufferedImage image, int delayMs) { }
+    private record GifFrame(BufferedImage image, int delayMs) {}
 
-    private record Dimension(int width, int height) { }
+    private record Dimension(int width, int height) {}
 }

src/main/java/dev/kruhlmann/imgfloat/service/media/MediaPreviewService.java

@@ -1,5 +1,10 @@
 package dev.kruhlmann.imgfloat.service.media;
 
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import javax.imageio.ImageIO;
 import org.jcodec.api.FrameGrab;
 import org.jcodec.api.JCodecException;
 import org.jcodec.common.io.ByteBufferSeekableByteChannel;
@@ -9,14 +14,9 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 
-import javax.imageio.ImageIO;
-import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.nio.ByteBuffer;
-
 @Service
 public class MediaPreviewService {
+
     private static final Logger logger = LoggerFactory.getLogger(MediaPreviewService.class);
 
     public byte[] encodePreview(BufferedImage image) {

src/main/java/dev/kruhlmann/imgfloat/service/media/OptimizedAsset.java

@@ -1,3 +1,3 @@
 package dev.kruhlmann.imgfloat.service.media;
 
-public record OptimizedAsset(byte[] bytes, String mediaType, int width, int height, byte[] previewBytes) { }
+public record OptimizedAsset(byte[] bytes, String mediaType, int width, int height, byte[] previewBytes) {}

src/main/node/app.js

@@ -2,35 +2,35 @@ const { app, BrowserWindow } = require("electron");
 const path = require("path");
 
 function createWindow() {
-  const url = "https://imgfloat.kruhlmann.dev/channels";
-  const initialWindowWidthPx = 960;
-  const initialWindowHeightPx = 640;
-  const applicationWindow = new BrowserWindow({
-    width: initialWindowWidthPx,
-    height: initialWindowHeightPx,
-    transparent: true,
-    frame: true,
-    backgroundColor: "#00000000",
-    alwaysOnTop: false,
-    icon: path.join(__dirname, "../resources/assets/icon/appicon.ico"),
-    webPreferences: { backgroundThrottling: false },
-  });
-  applicationWindow.setMenu(null);
+    const url = "https://imgfloat.kruhlmann.dev/channels";
+    const initialWindowWidthPx = 960;
+    const initialWindowHeightPx = 640;
+    const applicationWindow = new BrowserWindow({
+        width: initialWindowWidthPx,
+        height: initialWindowHeightPx,
+        transparent: true,
+        frame: true,
+        backgroundColor: "#00000000",
+        alwaysOnTop: false,
+        icon: path.join(__dirname, "../resources/assets/icon/appicon.ico"),
+        webPreferences: { backgroundThrottling: false },
+    });
+    applicationWindow.setMenu(null);
 
-  let canvasSizeInterval;
-  const clearCanvasSizeInterval = () => {
-    if (canvasSizeInterval) {
-      clearInterval(canvasSizeInterval);
-      canvasSizeInterval = undefined;
-    }
-  };
+    let canvasSizeInterval;
+    const clearCanvasSizeInterval = () => {
+        if (canvasSizeInterval) {
+            clearInterval(canvasSizeInterval);
+            canvasSizeInterval = undefined;
+        }
+    };
 
-  const lockWindowToCanvas = async () => {
-    if (applicationWindow.isDestroyed()) {
-      return false;
-    }
-    try {
-      const size = await applicationWindow.webContents.executeJavaScript(`(() => {
+    const lockWindowToCanvas = async () => {
+        if (applicationWindow.isDestroyed()) {
+            return false;
+        }
+        try {
+            const size = await applicationWindow.webContents.executeJavaScript(`(() => {
                 const canvas = document.getElementById('broadcast-canvas');
                 if (!canvas || !canvas.width || !canvas.height) {
                     return null;
@@ -38,52 +38,54 @@ function createWindow() {
                 return { width: Math.round(canvas.width), height: Math.round(canvas.height) };
             })();`);
 
-      if (size?.width && size?.height) {
-        const [currentWidth, currentHeight] = applicationWindow.getSize();
-        if (currentWidth !== size.width || currentHeight !== size.height) {
-          applicationWindow.setSize(size.width, size.height, false);
+            if (size?.width && size?.height) {
+                const [currentWidth, currentHeight] = applicationWindow.getSize();
+                if (currentWidth !== size.width || currentHeight !== size.height) {
+                    applicationWindow.setSize(size.width, size.height, false);
+                }
+                applicationWindow.setMinimumSize(size.width, size.height);
+                applicationWindow.setMaximumSize(size.width, size.height);
+                applicationWindow.setResizable(false);
+                return true;
+            }
+        } catch (error) {
+            // Best-effort sizing; ignore errors from early navigation states.
         }
-        applicationWindow.setMinimumSize(size.width, size.height);
-        applicationWindow.setMaximumSize(size.width, size.height);
-        applicationWindow.setResizable(false);
-        return true;
-      }
-    } catch (error) {
-      // Best-effort sizing; ignore errors from early navigation states.
-    }
-    return false;
-  };
+        return false;
+    };
 
-  const handleNavigation = (navigationUrl) => {
-    try {
-      const { pathname } = new URL(navigationUrl);
-      const isBroadcast = /\/view\/[^/]+\/broadcast\/?$/.test(pathname);
+    const handleNavigation = (navigationUrl) => {
+        try {
+            const { pathname } = new URL(navigationUrl);
+            const isBroadcast = /\/view\/[^/]+\/broadcast\/?$/.test(pathname);
 
-      if (isBroadcast) {
-        clearCanvasSizeInterval();
-        canvasSizeInterval = setInterval(lockWindowToCanvas, 750);
-        lockWindowToCanvas();
-      } else {
-        clearCanvasSizeInterval();
-        applicationWindow.setResizable(true);
-        applicationWindow.setMinimumSize(320, 240);
-        applicationWindow.setMaximumSize(10000, 10000);
-        applicationWindow.setSize(initialWindowWidthPx, initialWindowHeightPx, false);
-      }
-    } catch {
-      // Ignore malformed URLs while navigating.
-    }
-  };
+            if (isBroadcast) {
+                clearCanvasSizeInterval();
+                canvasSizeInterval = setInterval(lockWindowToCanvas, 750);
+                lockWindowToCanvas();
+            } else {
+                clearCanvasSizeInterval();
+                applicationWindow.setResizable(true);
+                applicationWindow.setMinimumSize(320, 240);
+                applicationWindow.setMaximumSize(10000, 10000);
+                applicationWindow.setSize(initialWindowWidthPx, initialWindowHeightPx, false);
+            }
+        } catch {
+            // Ignore malformed URLs while navigating.
+        }
+    };
 
-  applicationWindow.loadURL(url);
+    applicationWindow.loadURL(url);
 
-  applicationWindow.webContents.on("did-finish-load", () => {
-    handleNavigation(applicationWindow.webContents.getURL());
-  });
+    applicationWindow.webContents.on("did-finish-load", () => {
+        handleNavigation(applicationWindow.webContents.getURL());
+    });
 
-  applicationWindow.webContents.on("did-navigate", (_event, navigationUrl) => handleNavigation(navigationUrl));
-  applicationWindow.webContents.on("did-navigate-in-page", (_event, navigationUrl) => handleNavigation(navigationUrl));
-  applicationWindow.on("closed", clearCanvasSizeInterval);
+    applicationWindow.webContents.on("did-navigate", (_event, navigationUrl) => handleNavigation(navigationUrl));
+    applicationWindow.webContents.on("did-navigate-in-page", (_event, navigationUrl) =>
+        handleNavigation(navigationUrl),
+    );
+    applicationWindow.on("closed", clearCanvasSizeInterval);
 }
 
 app.whenReady().then(createWindow);

src/main/resources/application.yml

@@ -1,65 +1,65 @@
 server:
-  port: ${SERVER_PORT:8080}
-  tomcat:
-    max-swallow-size: 0
-  ssl:
-    enabled: ${SSL_ENABLED:false}
-    key-store: ${SSL_KEYSTORE_PATH:classpath:keystore.p12}
-    key-store-password: ${SSL_KEYSTORE_PASSWORD:changeit}
-    key-store-type: ${SSL_KEYSTORE_TYPE:PKCS12}
-  error:
-    include-message: never
-    include-stacktrace: never
+    port: ${SERVER_PORT:8080}
+    tomcat:
+        max-swallow-size: 0
+    ssl:
+        enabled: ${SSL_ENABLED:false}
+        key-store: ${SSL_KEYSTORE_PATH:classpath:keystore.p12}
+        key-store-password: ${SSL_KEYSTORE_PASSWORD:changeit}
+        key-store-type: ${SSL_KEYSTORE_TYPE:PKCS12}
+    error:
+        include-message: never
+        include-stacktrace: never
 
 spring:
-  config:
-    import: optional:file:.env[.properties]
-  application:
-    name: imgfloat
-  devtools:
-    restart:
-      enabled: true
-    livereload:
-      enabled: true
-  thymeleaf:
-    cache: false
-  datasource:
-    url: jdbc:sqlite:${IMGFLOAT_DB_PATH}?busy_timeout=5000&journal_mode=WAL
-    driver-class-name: org.sqlite.JDBC
-    hikari:
-      connection-init-sql: "PRAGMA journal_mode=WAL; PRAGMA busy_timeout=5000;"
-      maximum-pool-size: 1
-      minimum-idle: 1
-  jpa:
-    open-in-view: false
-    hibernate:
-      ddl-auto: update
-    database-platform: org.hibernate.community.dialect.SQLiteDialect
-  session:
-    store-type: jdbc
-    jdbc:
-      initialize-schema: always
-      platform: sqlite
-  security:
-    oauth2:
-      client:
-        registration:
-          twitch:
-            client-id: ${TWITCH_CLIENT_ID}
-            client-secret: ${TWITCH_CLIENT_SECRET}
-            client-authentication-method: client_secret_post
-            redirect-uri: "${TWITCH_REDIRECT_URI:{baseUrl}/login/oauth2/code/twitch}"
-            authorization-grant-type: authorization_code
-            scope: ["user:read:email", "moderation:read"]
-        provider:
-          twitch:
-            authorization-uri: https://id.twitch.tv/oauth2/authorize
-            token-uri: https://id.twitch.tv/oauth2/token
-            user-info-uri: https://api.twitch.tv/helix/users
-            user-name-attribute: login
+    config:
+        import: optional:file:.env[.properties]
+    application:
+        name: imgfloat
+    devtools:
+        restart:
+            enabled: true
+        livereload:
+            enabled: true
+    thymeleaf:
+        cache: false
+    datasource:
+        url: jdbc:sqlite:${IMGFLOAT_DB_PATH}?busy_timeout=5000&journal_mode=WAL
+        driver-class-name: org.sqlite.JDBC
+        hikari:
+            connection-init-sql: "PRAGMA journal_mode=WAL; PRAGMA busy_timeout=5000;"
+            maximum-pool-size: 1
+            minimum-idle: 1
+    jpa:
+        open-in-view: false
+        hibernate:
+            ddl-auto: update
+        database-platform: org.hibernate.community.dialect.SQLiteDialect
+    session:
+        store-type: jdbc
+        jdbc:
+            initialize-schema: always
+            platform: sqlite
+    security:
+        oauth2:
+            client:
+                registration:
+                    twitch:
+                        client-id: ${TWITCH_CLIENT_ID}
+                        client-secret: ${TWITCH_CLIENT_SECRET}
+                        client-authentication-method: client_secret_post
+                        redirect-uri: "${TWITCH_REDIRECT_URI:{baseUrl}/login/oauth2/code/twitch}"
+                        authorization-grant-type: authorization_code
+                        scope: ["user:read:email", "moderation:read"]
+                provider:
+                    twitch:
+                        authorization-uri: https://id.twitch.tv/oauth2/authorize
+                        token-uri: https://id.twitch.tv/oauth2/token
+                        user-info-uri: https://api.twitch.tv/helix/users
+                        user-name-attribute: login
 
 management:
-  endpoints:
-    web:
-      exposure:
-        include: health,info
+    endpoints:
+        web:
+            exposure:
+                include: health,info

src/main/resources/static/js/cookie-consent.js

@@ -12,7 +12,7 @@
     const persistDismissal = () => {
         try {
             window.localStorage.setItem(CONSENT_STORAGE_KEY, "true");
-        } catch { }
+        } catch {}
         document.cookie = `${CONSENT_STORAGE_KEY}=true; max-age=${COOKIE_MAX_AGE_SECONDS}; path=/; SameSite=Lax`;
     };
 
@@ -21,7 +21,7 @@
             if (window.localStorage.getItem(CONSENT_STORAGE_KEY) === "true") {
                 return true;
             }
-        } catch { }
+        } catch {}
         return readConsentCookie() === "true";
     };
 

src/main/resources/static/js/dashboard.js

@@ -1,228 +1,228 @@
 function buildIdentity(admin) {
-  const identity = document.createElement("div");
-  identity.className = "identity-row";
+    const identity = document.createElement("div");
+    identity.className = "identity-row";
 
-  const avatar = document.createElement(admin.avatarUrl ? "img" : "div");
-  avatar.className = "avatar";
-  if (admin.avatarUrl) {
-    avatar.src = admin.avatarUrl;
-    avatar.alt = `${admin.displayName || admin.login} avatar`;
-  } else {
-    avatar.classList.add("avatar-fallback");
-    avatar.textContent = (admin.displayName || admin.login || "?").charAt(0).toUpperCase();
-  }
+    const avatar = document.createElement(admin.avatarUrl ? "img" : "div");
+    avatar.className = "avatar";
+    if (admin.avatarUrl) {
+        avatar.src = admin.avatarUrl;
+        avatar.alt = `${admin.displayName || admin.login} avatar`;
+    } else {
+        avatar.classList.add("avatar-fallback");
+        avatar.textContent = (admin.displayName || admin.login || "?").charAt(0).toUpperCase();
+    }
 
-  const details = document.createElement("div");
-  details.className = "identity-text";
-  const title = document.createElement("p");
-  title.className = "list-title";
-  title.textContent = admin.displayName || admin.login;
-  const subtitle = document.createElement("p");
-  subtitle.className = "muted";
-  subtitle.textContent = `@${admin.login}`;
+    const details = document.createElement("div");
+    details.className = "identity-text";
+    const title = document.createElement("p");
+    title.className = "list-title";
+    title.textContent = admin.displayName || admin.login;
+    const subtitle = document.createElement("p");
+    subtitle.className = "muted";
+    subtitle.textContent = `@${admin.login}`;
 
-  details.appendChild(title);
-  details.appendChild(subtitle);
-  identity.appendChild(avatar);
-  identity.appendChild(details);
-  return identity;
+    details.appendChild(title);
+    details.appendChild(subtitle);
+    identity.appendChild(avatar);
+    identity.appendChild(details);
+    return identity;
 }
 
 function renderAdmins(list) {
-  const adminList = document.getElementById("admin-list");
-  if (!adminList) return;
-  adminList.innerHTML = "";
-  if (!list || list.length === 0) {
-    const empty = document.createElement("li");
-    empty.textContent = "No channel admins yet";
-    adminList.appendChild(empty);
-    return;
-  }
+    const adminList = document.getElementById("admin-list");
+    if (!adminList) return;
+    adminList.innerHTML = "";
+    if (!list || list.length === 0) {
+        const empty = document.createElement("li");
+        empty.textContent = "No channel admins yet";
+        adminList.appendChild(empty);
+        return;
+    }
 
-  list.forEach((admin) => {
-    const li = document.createElement("li");
-    li.className = "stacked-list-item";
+    list.forEach((admin) => {
+        const li = document.createElement("li");
+        li.className = "stacked-list-item";
 
-    li.appendChild(buildIdentity(admin));
+        li.appendChild(buildIdentity(admin));
 
-    const actions = document.createElement("div");
-    actions.className = "actions";
+        const actions = document.createElement("div");
+        actions.className = "actions";
 
-    const removeBtn = document.createElement("button");
-    removeBtn.type = "button";
-    removeBtn.className = "secondary";
-    removeBtn.textContent = "Remove";
-    removeBtn.addEventListener("click", () => removeAdmin(admin.login));
+        const removeBtn = document.createElement("button");
+        removeBtn.type = "button";
+        removeBtn.className = "secondary";
+        removeBtn.textContent = "Remove";
+        removeBtn.addEventListener("click", () => removeAdmin(admin.login));
 
-    actions.appendChild(removeBtn);
-    li.appendChild(actions);
-    adminList.appendChild(li);
-  });
+        actions.appendChild(removeBtn);
+        li.appendChild(actions);
+        adminList.appendChild(li);
+    });
 }
 
 function renderSuggestedAdmins(list) {
-  const suggestionList = document.getElementById("admin-suggestions");
-  if (!suggestionList) return;
+    const suggestionList = document.getElementById("admin-suggestions");
+    if (!suggestionList) return;
 
-  suggestionList.innerHTML = "";
-  if (!list || list.length === 0) {
-    const empty = document.createElement("li");
-    empty.className = "stacked-list-item";
-    empty.textContent = "No moderator suggestions right now";
-    suggestionList.appendChild(empty);
-    return;
-  }
+    suggestionList.innerHTML = "";
+    if (!list || list.length === 0) {
+        const empty = document.createElement("li");
+        empty.className = "stacked-list-item";
+        empty.textContent = "No moderator suggestions right now";
+        suggestionList.appendChild(empty);
+        return;
+    }
 
-  list.forEach((admin) => {
-    const li = document.createElement("li");
-    li.className = "stacked-list-item";
+    list.forEach((admin) => {
+        const li = document.createElement("li");
+        li.className = "stacked-list-item";
 
-    li.appendChild(buildIdentity(admin));
+        li.appendChild(buildIdentity(admin));
 
-    const actions = document.createElement("div");
-    actions.className = "actions";
+        const actions = document.createElement("div");
+        actions.className = "actions";
 
-    const addBtn = document.createElement("button");
-    addBtn.type = "button";
-    addBtn.className = "ghost";
-    addBtn.textContent = "Add as admin";
-    addBtn.addEventListener("click", () => addAdmin(admin.login));
+        const addBtn = document.createElement("button");
+        addBtn.type = "button";
+        addBtn.className = "ghost";
+        addBtn.textContent = "Add as admin";
+        addBtn.addEventListener("click", () => addAdmin(admin.login));
 
-    actions.appendChild(addBtn);
-    li.appendChild(actions);
-    suggestionList.appendChild(li);
-  });
+        actions.appendChild(addBtn);
+        li.appendChild(actions);
+        suggestionList.appendChild(li);
+    });
 }
 
 function fetchSuggestedAdmins() {
-  fetch(`/api/channels/${broadcaster}/admins/suggestions`)
-    .then((r) => {
-      if (!r.ok) {
-        throw new Error("Failed to load admin suggestions");
-      }
-      return r.json();
-    })
-    .then(renderSuggestedAdmins)
-    .catch(() => {
-      renderSuggestedAdmins([]);
-    });
+    fetch(`/api/channels/${broadcaster}/admins/suggestions`)
+        .then((r) => {
+            if (!r.ok) {
+                throw new Error("Failed to load admin suggestions");
+            }
+            return r.json();
+        })
+        .then(renderSuggestedAdmins)
+        .catch(() => {
+            renderSuggestedAdmins([]);
+        });
 }
 
 function fetchAdmins() {
-  fetch(`/api/channels/${broadcaster}/admins`)
-    .then((r) => {
-      if (!r.ok) {
-        throw new Error("Failed to load admins");
-      }
-      return r.json();
-    })
-    .then(renderAdmins)
-    .catch(() => {
-      renderAdmins([]);
-      showToast("Unable to load admins right now. Please try again.", "error");
-    });
+    fetch(`/api/channels/${broadcaster}/admins`)
+        .then((r) => {
+            if (!r.ok) {
+                throw new Error("Failed to load admins");
+            }
+            return r.json();
+        })
+        .then(renderAdmins)
+        .catch(() => {
+            renderAdmins([]);
+            showToast("Unable to load admins right now. Please try again.", "error");
+        });
 }
 
 function removeAdmin(username) {
-  if (!username) return;
-  fetch(`/api/channels/${encodeURIComponent(broadcaster)}/admins/${encodeURIComponent(username)}`, {
-    method: "DELETE",
-  })
-    .then((response) => {
-      if (!response.ok) {
-        throw new Error();
-      }
-      fetchAdmins();
-      fetchSuggestedAdmins();
+    if (!username) return;
+    fetch(`/api/channels/${encodeURIComponent(broadcaster)}/admins/${encodeURIComponent(username)}`, {
+        method: "DELETE",
     })
-    .catch(() => {
-      showToast("Failed to remove admin. Please retry.", "error");
-    });
+        .then((response) => {
+            if (!response.ok) {
+                throw new Error();
+            }
+            fetchAdmins();
+            fetchSuggestedAdmins();
+        })
+        .catch(() => {
+            showToast("Failed to remove admin. Please retry.", "error");
+        });
 }
 
 function addAdmin(usernameFromAction) {
-  const input = document.getElementById("new-admin");
-  const username = (usernameFromAction || input?.value || "").trim();
-  if (!username) {
-    showToast("Enter a Twitch username to add as an admin.", "info");
-    return;
-  }
+    const input = document.getElementById("new-admin");
+    const username = (usernameFromAction || input?.value || "").trim();
+    if (!username) {
+        showToast("Enter a Twitch username to add as an admin.", "info");
+        return;
+    }
 
-  fetch(`/api/channels/${broadcaster}/admins`, {
-    method: "POST",
-    headers: { "Content-Type": "application/json" },
-    body: JSON.stringify({ username }),
-  })
-    .then((response) => {
-      if (!response.ok) {
-        throw new Error("Add admin failed");
-      }
-      if (input) {
-        input.value = "";
-      }
-      showToast(`Added @${username} as an admin.`, "success");
-      fetchAdmins();
-      fetchSuggestedAdmins();
+    fetch(`/api/channels/${broadcaster}/admins`, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ username }),
     })
-    .catch(() => showToast("Unable to add admin right now. Please try again.", "error"));
+        .then((response) => {
+            if (!response.ok) {
+                throw new Error("Add admin failed");
+            }
+            if (input) {
+                input.value = "";
+            }
+            showToast(`Added @${username} as an admin.`, "success");
+            fetchAdmins();
+            fetchSuggestedAdmins();
+        })
+        .catch(() => showToast("Unable to add admin right now. Please try again.", "error"));
 }
 
 function renderCanvasSettings(settings) {
-  const widthInput = document.getElementById("canvas-width");
-  const heightInput = document.getElementById("canvas-height");
-  if (widthInput) widthInput.value = Math.round(settings.width);
-  if (heightInput) heightInput.value = Math.round(settings.height);
+    const widthInput = document.getElementById("canvas-width");
+    const heightInput = document.getElementById("canvas-height");
+    if (widthInput) widthInput.value = Math.round(settings.width);
+    if (heightInput) heightInput.value = Math.round(settings.height);
 }
 
 function fetchCanvasSettings() {
-  fetch(`/api/channels/${broadcaster}/canvas`)
-    .then((r) => {
-      if (!r.ok) {
-        throw new Error("Failed to load canvas settings");
-      }
-      return r.json();
-    })
-    .then(renderCanvasSettings)
-    .catch(() => {
-      renderCanvasSettings({ width: 1920, height: 1080 });
-      showToast("Using default canvas size. Unable to load saved settings.", "warning");
-    });
+    fetch(`/api/channels/${broadcaster}/canvas`)
+        .then((r) => {
+            if (!r.ok) {
+                throw new Error("Failed to load canvas settings");
+            }
+            return r.json();
+        })
+        .then(renderCanvasSettings)
+        .catch(() => {
+            renderCanvasSettings({ width: 1920, height: 1080 });
+            showToast("Using default canvas size. Unable to load saved settings.", "warning");
+        });
 }
 
 function saveCanvasSettings() {
-  const widthInput = document.getElementById("canvas-width");
-  const heightInput = document.getElementById("canvas-height");
-  const status = document.getElementById("canvas-status");
-  const width = parseFloat(widthInput?.value) || 0;
-  const height = parseFloat(heightInput?.value) || 0;
-  if (width <= 0 || height <= 0) {
-    showToast("Please enter a valid width and height.", "info");
-    return;
-  }
-  if (status) status.textContent = "Saving...";
-  fetch(`/api/channels/${broadcaster}/canvas`, {
-    method: "PUT",
-    headers: { "Content-Type": "application/json" },
-    body: JSON.stringify({ width, height }),
-  })
-    .then((r) => {
-      if (!r.ok) {
-        throw new Error("Failed to save canvas");
-      }
-      return r.json();
+    const widthInput = document.getElementById("canvas-width");
+    const heightInput = document.getElementById("canvas-height");
+    const status = document.getElementById("canvas-status");
+    const width = parseFloat(widthInput?.value) || 0;
+    const height = parseFloat(heightInput?.value) || 0;
+    if (width <= 0 || height <= 0) {
+        showToast("Please enter a valid width and height.", "info");
+        return;
+    }
+    if (status) status.textContent = "Saving...";
+    fetch(`/api/channels/${broadcaster}/canvas`, {
+        method: "PUT",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ width, height }),
     })
-    .then((settings) => {
-      renderCanvasSettings(settings);
-      if (status) status.textContent = "Saved.";
-      showToast("Canvas size saved successfully.", "success");
-      setTimeout(() => {
-        if (status) status.textContent = "";
-      }, 2000);
-    })
-    .catch(() => {
-      if (status) status.textContent = "Unable to save right now.";
-      showToast("Unable to save canvas size. Please retry.", "error");
-    });
+        .then((r) => {
+            if (!r.ok) {
+                throw new Error("Failed to save canvas");
+            }
+            return r.json();
+        })
+        .then((settings) => {
+            renderCanvasSettings(settings);
+            if (status) status.textContent = "Saved.";
+            showToast("Canvas size saved successfully.", "success");
+            setTimeout(() => {
+                if (status) status.textContent = "";
+            }, 2000);
+        })
+        .catch(() => {
+            if (status) status.textContent = "Unable to save right now.";
+            showToast("Unable to save canvas size. Please retry.", "error");
+        });
 }
 
 fetchAdmins();

src/main/resources/static/js/downloads.js

@@ -1,40 +1,40 @@
 function detectPlatform() {
-  const navigatorPlatform = (navigator.userAgentData?.platform || navigator.platform || "").toLowerCase();
-  const userAgent = (navigator.userAgent || "").toLowerCase();
-  const platformString = `${navigatorPlatform} ${userAgent}`;
+    const navigatorPlatform = (navigator.userAgentData?.platform || navigator.platform || "").toLowerCase();
+    const userAgent = (navigator.userAgent || "").toLowerCase();
+    const platformString = `${navigatorPlatform} ${userAgent}`;
 
-  if (platformString.includes("mac") || platformString.includes("darwin")) {
-    return "mac";
-  }
-  if (platformString.includes("win")) {
-    return "windows";
-  }
-  if (platformString.includes("linux")) {
-    return "linux";
-  }
-  return null;
+    if (platformString.includes("mac") || platformString.includes("darwin")) {
+        return "mac";
+    }
+    if (platformString.includes("win")) {
+        return "windows";
+    }
+    if (platformString.includes("linux")) {
+        return "linux";
+    }
+    return null;
 }
 
 function markRecommendedDownload(section) {
-  const cards = Array.from(section.querySelectorAll(".download-card"));
-  if (!cards.length) {
-    return;
-  }
-
-  const platform = detectPlatform();
-  const preferredCard = cards.find((card) => card.dataset.platform === platform) || cards[0];
-
-  cards.forEach((card) => {
-    const isPreferred = card === preferredCard;
-    card.classList.toggle("download-card--active", isPreferred);
-    const badge = card.querySelector(".recommended-badge");
-    if (badge) {
-      badge.classList.toggle("hidden", !isPreferred);
+    const cards = Array.from(section.querySelectorAll(".download-card"));
+    if (!cards.length) {
+        return;
     }
-  });
+
+    const platform = detectPlatform();
+    const preferredCard = cards.find((card) => card.dataset.platform === platform) || cards[0];
+
+    cards.forEach((card) => {
+        const isPreferred = card === preferredCard;
+        card.classList.toggle("download-card--active", isPreferred);
+        const badge = card.querySelector(".recommended-badge");
+        if (badge) {
+            badge.classList.toggle("hidden", !isPreferred);
+        }
+    });
 }
 
 document.addEventListener("DOMContentLoaded", () => {
-  const downloadSections = document.querySelectorAll(".download-section, .download-card-block");
-  downloadSections.forEach(markRecommendedDownload);
+    const downloadSections = document.querySelectorAll(".download-section, .download-card-block");
+    downloadSections.forEach(markRecommendedDownload);
 });

src/main/resources/static/js/landing.js

@@ -1,54 +1,54 @@
 document.addEventListener("DOMContentLoaded", () => {
-  const searchForm = document.getElementById("channel-search-form");
-  const searchInput = document.getElementById("channel-search");
-  const suggestions = document.getElementById("channel-suggestions");
+    const searchForm = document.getElementById("channel-search-form");
+    const searchInput = document.getElementById("channel-search");
+    const suggestions = document.getElementById("channel-suggestions");
 
-  if (!searchForm || !searchInput || !suggestions) {
-    console.error("Required elements not found in the DOM");
-    return;
-  }
+    if (!searchForm || !searchInput || !suggestions) {
+        console.error("Required elements not found in the DOM");
+        return;
+    }
 
-  let channels = [];
+    let channels = [];
 
-  function updateSuggestions(term) {
-    const normalizedTerm = term.trim().toLowerCase();
-    const filtered = channels.filter((name) => !normalizedTerm || name.includes(normalizedTerm)).slice(0, 20);
+    function updateSuggestions(term) {
+        const normalizedTerm = term.trim().toLowerCase();
+        const filtered = channels.filter((name) => !normalizedTerm || name.includes(normalizedTerm)).slice(0, 20);
 
-    suggestions.innerHTML = "";
-    filtered.forEach((name) => {
-      const option = document.createElement("option");
-      option.value = name;
-      suggestions.appendChild(option);
+        suggestions.innerHTML = "";
+        filtered.forEach((name) => {
+            const option = document.createElement("option");
+            option.value = name;
+            suggestions.appendChild(option);
+        });
+    }
+
+    async function loadChannels() {
+        try {
+            const response = await fetch("/api/channels");
+            if (!response.ok) {
+                throw new Error(`Failed to load channels: ${response.status}`);
+            }
+            channels = await response.json();
+            updateSuggestions(searchInput.value || "");
+        } catch (error) {
+            console.error("Could not load channel directory", error);
+        }
+    }
+
+    searchInput.focus({ preventScroll: true });
+    searchInput.select();
+
+    searchInput.addEventListener("input", (event) => updateSuggestions(event.target.value || ""));
+
+    searchForm.addEventListener("submit", (event) => {
+        event.preventDefault();
+        const broadcaster = (searchInput.value || "").trim().toLowerCase();
+        if (!broadcaster) {
+            searchInput.focus();
+            return;
+        }
+        window.location.href = `/view/${encodeURIComponent(broadcaster)}/broadcast`;
     });
-  }
 
-  async function loadChannels() {
-    try {
-      const response = await fetch("/api/channels");
-      if (!response.ok) {
-        throw new Error(`Failed to load channels: ${response.status}`);
-      }
-      channels = await response.json();
-      updateSuggestions(searchInput.value || "");
-    } catch (error) {
-      console.error("Could not load channel directory", error);
-    }
-  }
-
-  searchInput.focus({ preventScroll: true });
-  searchInput.select();
-
-  searchInput.addEventListener("input", (event) => updateSuggestions(event.target.value || ""));
-
-  searchForm.addEventListener("submit", (event) => {
-    event.preventDefault();
-    const broadcaster = (searchInput.value || "").trim().toLowerCase();
-    if (!broadcaster) {
-      searchInput.focus();
-      return;
-    }
-    window.location.href = `/view/${encodeURIComponent(broadcaster)}/broadcast`;
-  });
-
-  loadChannels();
+    loadChannels();
 });

src/main/resources/static/js/settings.js

@@ -19,130 +19,130 @@ const currentSettings = JSON.parse(serverRenderedSettings);
 let userSettings = { ...currentSettings };
 
 function jsonEquals(a, b) {
-  if (a === b) return true;
+    if (a === b) return true;
 
-  if (typeof a !== "object" || typeof b !== "object" || a === null || b === null) {
-    return false;
-  }
+    if (typeof a !== "object" || typeof b !== "object" || a === null || b === null) {
+        return false;
+    }
 
-  const keysA = Object.keys(a);
-  const keysB = Object.keys(b);
+    const keysA = Object.keys(a);
+    const keysB = Object.keys(b);
 
-  if (keysA.length !== keysB.length) return false;
+    if (keysA.length !== keysB.length) return false;
 
-  for (const key of keysA) {
-    if (!keysB.includes(key)) return false;
-    if (!jsonEquals(a[key], b[key])) return false;
-  }
+    for (const key of keysA) {
+        if (!keysB.includes(key)) return false;
+        if (!jsonEquals(a[key], b[key])) return false;
+    }
 
-  return true;
+    return true;
 }
 
 function setFormSettings(s) {
-  canvasFpsElement.value = s.canvasFramesPerSecond;
-  canvasSizeElement.value = s.maxCanvasSideLengthPixels;
+    canvasFpsElement.value = s.canvasFramesPerSecond;
+    canvasSizeElement.value = s.maxCanvasSideLengthPixels;
 
-  minPlaybackSpeedElement.value = s.minAssetPlaybackSpeedFraction;
-  maxPlaybackSpeedElement.value = s.maxAssetPlaybackSpeedFraction;
-  minPitchElement.value = s.minAssetAudioPitchFraction;
-  maxPitchElement.value = s.maxAssetAudioPitchFraction;
-  minVolumeElement.value = s.minAssetVolumeFraction;
-  maxVolumeElement.value = s.maxAssetVolumeFraction;
+    minPlaybackSpeedElement.value = s.minAssetPlaybackSpeedFraction;
+    maxPlaybackSpeedElement.value = s.maxAssetPlaybackSpeedFraction;
+    minPitchElement.value = s.minAssetAudioPitchFraction;
+    maxPitchElement.value = s.maxAssetAudioPitchFraction;
+    minVolumeElement.value = s.minAssetVolumeFraction;
+    maxVolumeElement.value = s.maxAssetVolumeFraction;
 }
 
 function updateStatCards(settings) {
-  if (!settings) return;
-  statCanvasFpsElement.textContent = `${settings.canvasFramesPerSecond ?? "--"} fps`;
-  statCanvasSizeElement.textContent = `${settings.maxCanvasSideLengthPixels ?? "--"} px`;
-  statPlaybackRangeElement.textContent = `${settings.minAssetPlaybackSpeedFraction ?? "--"} – ${settings.maxAssetPlaybackSpeedFraction ?? "--"}x`;
-  statAudioRangeElement.textContent = `${settings.minAssetAudioPitchFraction ?? "--"} – ${settings.maxAssetAudioPitchFraction ?? "--"}x`;
-  statVolumeRangeElement.textContent = `${settings.minAssetVolumeFraction ?? "--"} – ${settings.maxAssetVolumeFraction ?? "--"}x`;
+    if (!settings) return;
+    statCanvasFpsElement.textContent = `${settings.canvasFramesPerSecond ?? "--"} fps`;
+    statCanvasSizeElement.textContent = `${settings.maxCanvasSideLengthPixels ?? "--"} px`;
+    statPlaybackRangeElement.textContent = `${settings.minAssetPlaybackSpeedFraction ?? "--"} – ${settings.maxAssetPlaybackSpeedFraction ?? "--"}x`;
+    statAudioRangeElement.textContent = `${settings.minAssetAudioPitchFraction ?? "--"} – ${settings.maxAssetAudioPitchFraction ?? "--"}x`;
+    statVolumeRangeElement.textContent = `${settings.minAssetVolumeFraction ?? "--"} – ${settings.maxAssetVolumeFraction ?? "--"}x`;
 }
 
 function readInt(input) {
-  return input.checkValidity() ? Number(input.value) : null;
+    return input.checkValidity() ? Number(input.value) : null;
 }
 
 function readFloat(input) {
-  return input.checkValidity() ? Number(input.value) : null;
+    return input.checkValidity() ? Number(input.value) : null;
 }
 
 function loadUserSettingsFromDom() {
-  userSettings.canvasFramesPerSecond = readInt(canvasFpsElement);
-  userSettings.maxCanvasSideLengthPixels = readInt(canvasSizeElement);
-  userSettings.minAssetPlaybackSpeedFraction = readFloat(minPlaybackSpeedElement);
-  userSettings.maxAssetPlaybackSpeedFraction = readFloat(maxPlaybackSpeedElement);
-  userSettings.minAssetAudioPitchFraction = readFloat(minPitchElement);
-  userSettings.maxAssetAudioPitchFraction = readFloat(maxPitchElement);
-  userSettings.minAssetVolumeFraction = readFloat(minVolumeElement);
-  userSettings.maxAssetVolumeFraction = readFloat(maxVolumeElement);
+    userSettings.canvasFramesPerSecond = readInt(canvasFpsElement);
+    userSettings.maxCanvasSideLengthPixels = readInt(canvasSizeElement);
+    userSettings.minAssetPlaybackSpeedFraction = readFloat(minPlaybackSpeedElement);
+    userSettings.maxAssetPlaybackSpeedFraction = readFloat(maxPlaybackSpeedElement);
+    userSettings.minAssetAudioPitchFraction = readFloat(minPitchElement);
+    userSettings.maxAssetAudioPitchFraction = readFloat(maxPitchElement);
+    userSettings.minAssetVolumeFraction = readFloat(minVolumeElement);
+    userSettings.maxAssetVolumeFraction = readFloat(maxVolumeElement);
 }
 
 function updateSubmitButtonDisabledState() {
-  if (jsonEquals(currentSettings, userSettings)) {
-    submitButtonElement.disabled = "disabled";
-    statusElement.textContent = "No changes yet.";
-    statusElement.classList.remove("status-success", "status-warning");
-    return;
-  }
-  if (!formElement.checkValidity()) {
-    submitButtonElement.disabled = "disabled";
-    statusElement.textContent = "Fix highlighted fields.";
-    statusElement.classList.add("status-warning");
-    statusElement.classList.remove("status-success");
-    return;
-  }
-  submitButtonElement.disabled = null;
-  statusElement.textContent = "Ready to save.";
-  statusElement.classList.remove("status-warning");
+    if (jsonEquals(currentSettings, userSettings)) {
+        submitButtonElement.disabled = "disabled";
+        statusElement.textContent = "No changes yet.";
+        statusElement.classList.remove("status-success", "status-warning");
+        return;
+    }
+    if (!formElement.checkValidity()) {
+        submitButtonElement.disabled = "disabled";
+        statusElement.textContent = "Fix highlighted fields.";
+        statusElement.classList.add("status-warning");
+        statusElement.classList.remove("status-success");
+        return;
+    }
+    submitButtonElement.disabled = null;
+    statusElement.textContent = "Ready to save.";
+    statusElement.classList.remove("status-warning");
 }
 
 function submitSettingsForm() {
-  if (submitButtonElement.getAttribute("disabled") != null) {
-    console.warn("Attempted to submit invalid form");
-    showToast("Settings not valid", "warning");
-    return;
-  }
-  statusElement.textContent = "Saving…";
-  statusElement.classList.remove("status-success", "status-warning");
-  fetch("/api/settings/set", {
-    method: "PUT",
-    headers: { "Content-Type": "application/json" },
-    body: JSON.stringify(userSettings),
-  })
-    .then((r) => {
-      if (!r.ok) {
-        throw new Error("Failed to load canvas");
-      }
-      return r.json();
+    if (submitButtonElement.getAttribute("disabled") != null) {
+        console.warn("Attempted to submit invalid form");
+        showToast("Settings not valid", "warning");
+        return;
+    }
+    statusElement.textContent = "Saving…";
+    statusElement.classList.remove("status-success", "status-warning");
+    fetch("/api/settings/set", {
+        method: "PUT",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(userSettings),
     })
-    .then((newSettings) => {
-      currentSettings = { ...newSettings };
-      userSettings = { ...newSettings };
-      updateStatCards(newSettings);
-      showToast("Settings saved", "success");
-      statusElement.textContent = "Saved.";
-      statusElement.classList.add("status-success");
-      updateSubmitButtonDisabledState();
-    })
-    .catch((error) => {
-      showToast("Unable to save settings", "error");
-      console.error(error);
-      statusElement.textContent = "Save failed. Try again.";
-      statusElement.classList.add("status-warning");
-    });
+        .then((r) => {
+            if (!r.ok) {
+                throw new Error("Failed to load canvas");
+            }
+            return r.json();
+        })
+        .then((newSettings) => {
+            currentSettings = { ...newSettings };
+            userSettings = { ...newSettings };
+            updateStatCards(newSettings);
+            showToast("Settings saved", "success");
+            statusElement.textContent = "Saved.";
+            statusElement.classList.add("status-success");
+            updateSubmitButtonDisabledState();
+        })
+        .catch((error) => {
+            showToast("Unable to save settings", "error");
+            console.error(error);
+            statusElement.textContent = "Save failed. Try again.";
+            statusElement.classList.add("status-warning");
+        });
 }
 
 formElement.querySelectorAll("input").forEach((input) => {
-  input.addEventListener("input", () => {
-    loadUserSettingsFromDom();
-    updateSubmitButtonDisabledState();
-  });
+    input.addEventListener("input", () => {
+        loadUserSettingsFromDom();
+        updateSubmitButtonDisabledState();
+    });
 });
 
 formElement.addEventListener("submit", (event) => {
-  event.preventDefault();
-  submitSettingsForm();
+    event.preventDefault();
+    submitSettingsForm();
 });
 
 setFormSettings(currentSettings);

src/main/resources/static/js/toast.js

@@ -1,51 +1,51 @@
 (function () {
-  const CONTAINER_ID = "toast-container";
-  const DEFAULT_DURATION = 4200;
+    const CONTAINER_ID = "toast-container";
+    const DEFAULT_DURATION = 4200;
 
-  function ensureContainer() {
-    let container = document.getElementById(CONTAINER_ID);
-    if (!container) {
-      container = document.createElement("div");
-      container.id = CONTAINER_ID;
-      container.className = "toast-container";
-      container.setAttribute("aria-live", "polite");
-      container.setAttribute("aria-atomic", "true");
-      document.body.appendChild(container);
+    function ensureContainer() {
+        let container = document.getElementById(CONTAINER_ID);
+        if (!container) {
+            container = document.createElement("div");
+            container.id = CONTAINER_ID;
+            container.className = "toast-container";
+            container.setAttribute("aria-live", "polite");
+            container.setAttribute("aria-atomic", "true");
+            document.body.appendChild(container);
+        }
+        return container;
     }
-    return container;
-  }
 
-  function buildToast(message, type) {
-    const toast = document.createElement("div");
-    toast.className = `toast toast-${type}`;
+    function buildToast(message, type) {
+        const toast = document.createElement("div");
+        toast.className = `toast toast-${type}`;
 
-    const indicator = document.createElement("span");
-    indicator.className = "toast-indicator";
-    indicator.setAttribute("aria-hidden", "true");
+        const indicator = document.createElement("span");
+        indicator.className = "toast-indicator";
+        indicator.setAttribute("aria-hidden", "true");
 
-    const content = document.createElement("div");
-    content.className = "toast-message";
-    content.textContent = message;
+        const content = document.createElement("div");
+        content.className = "toast-message";
+        content.textContent = message;
 
-    toast.appendChild(indicator);
-    toast.appendChild(content);
-    return toast;
-  }
+        toast.appendChild(indicator);
+        toast.appendChild(content);
+        return toast;
+    }
 
-  function removeToast(toast) {
-    if (!toast) return;
-    toast.classList.add("toast-exit");
-    setTimeout(() => toast.remove(), 250);
-  }
+    function removeToast(toast) {
+        if (!toast) return;
+        toast.classList.add("toast-exit");
+        setTimeout(() => toast.remove(), 250);
+    }
 
-  window.showToast = function showToast(message, type = "info", options = {}) {
-    if (!message) return;
-    const normalized = ["success", "error", "warning", "info"].includes(type) ? type : "info";
-    const duration = typeof options.duration === "number" ? options.duration : DEFAULT_DURATION;
-    const container = ensureContainer();
-    const toast = buildToast(message, normalized);
-    container.appendChild(toast);
-    setTimeout(() => removeToast(toast), Math.max(1200, duration));
-    toast.addEventListener("click", () => removeToast(toast));
-  };
+    window.showToast = function showToast(message, type = "info", options = {}) {
+        if (!message) return;
+        const normalized = ["success", "error", "warning", "info"].includes(type) ? type : "info";
+        const duration = typeof options.duration === "number" ? options.duration : DEFAULT_DURATION;
+        const container = ensureContainer();
+        const toast = buildToast(message, normalized);
+        container.appendChild(toast);
+        setTimeout(() => removeToast(toast), Math.max(1200, duration));
+        toast.addEventListener("click", () => removeToast(toast));
+    };
 })();

src/main/resources/templates/admin.html

@@ -1,308 +1,358 @@
 <!doctype html>
 <html lang="en" xmlns:th="http://www.thymeleaf.org">
-  <head>
-    <meta charset="UTF-8" />
-    <title>Imgfloat Admin</title>
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="stylesheet" href="/css/styles.css" />
-    <link
-      rel="stylesheet"
-      href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css"
-      integrity="sha512-SnH5WK+bZxgPHs44uWIX+LLJAJ9/2PkPKZ5QiAj6Ta86w+fsb2TkcmfRyVX3pBnMFcV7oQPJkl9QevSCWr3W6A=="
-      crossorigin="anonymous"
-      referrerpolicy="no-referrer"
-    />
-    <script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/lib/stomp.min.js"></script>
-  </head>
-  <body class="admin-body">
-    <div class="admin-frame">
-      <header class="admin-topbar">
-        <div class="topbar-left">
-          <div class="admin-identity">
-            <p class="eyebrow subtle">CHANNEL ADMIN</p>
-            <h1 th:text="${broadcaster}"></h1>
-          </div>
-        </div>
-        <div class="header-actions horizontal">
-          <a class="icon-button" th:href="@{/}" title="Back to dashboard">
-            <i class="fa-solid fa-chevron-left" aria-hidden="true"></i>
-            <span class="sr-only">Back to dashboard</span>
-          </a>
-          <a class="button ghost" th:href="${'/view/' + broadcaster + '/broadcast'}" target="_blank" rel="noopener"
-            >Broadcaster view</a
-          >
-        </div>
-      </header>
-
-      <div class="admin-workspace">
-        <aside class="admin-rail">
-          <div class="upload-row">
-            <input
-              id="asset-file"
-              class="file-input-field"
-              type="file"
-              accept="image/*,video/*,audio/*"
-              onchange="handleFileSelection(this)"
-            />
-            <label for="asset-file" class="file-input-trigger">
-              <span class="file-input-icon"><i class="fa-solid fa-cloud-arrow-up"></i></span>
-              <span class="file-input-copy">
-                <strong>Upload asset</strong>
-                <small id="asset-file-name">No file chosen</small>
-              </span>
-            </label>
-          </div>
-          <div class="rail-body">
-            <div class="rail-scroll">
-              <ul id="asset-list" class="asset-list"></ul>
-            </div>
-          </div>
-
-          <div id="asset-inspector" class="rail-inspector hidden">
-            <div class="asset-inspector">
-              <div class="selected-asset-banner">
-                <div class="selected-asset-main">
-                  <div class="title-row">
-                    <strong id="selected-asset-name">Choose an asset</strong>
-                    <span id="selected-asset-resolution" class="asset-resolution subtle-text hidden"></span>
-                  </div>
-                  <p class="meta-text" id="selected-asset-meta">
-                    Pick an asset in the list to adjust its placement and playback.
-                  </p>
-                  <p class="meta-text subtle-text hidden" id="selected-asset-id"></p>
-                  <div class="badge-row asset-meta-badges" id="selected-asset-badges"></div>
-                </div>
-              </div>
-              <div id="asset-controls-placeholder" class="asset-controls-placeholder">
-                <div id="asset-controls" class="hidden asset-settings">
-                  <div class="panel-section" id="layout-section">
-                    <div class="section-header">
-                      <h5>Layout & order</h5>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Imgfloat Admin</title>
+        <link rel="icon" href="/favicon.ico" />
+        <link rel="stylesheet" href="/css/styles.css" />
+        <link
+            rel="stylesheet"
+            href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css"
+            integrity="sha512-SnH5WK+bZxgPHs44uWIX+LLJAJ9/2PkPKZ5QiAj6Ta86w+fsb2TkcmfRyVX3pBnMFcV7oQPJkl9QevSCWr3W6A=="
+            crossorigin="anonymous"
+            referrerpolicy="no-referrer"
+        />
+        <script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/lib/stomp.min.js"></script>
+    </head>
+    <body class="admin-body">
+        <div class="admin-frame">
+            <header class="admin-topbar">
+                <div class="topbar-left">
+                    <div class="admin-identity">
+                        <p class="eyebrow subtle">CHANNEL ADMIN</p>
+                        <h1 th:text="${broadcaster}"></h1>
                     </div>
-                    <div class="property-list">
-                      <div class="property-row">
-                        <span class="property-label">Width</span>
-                        <input id="asset-width" class="number-input property-control" type="number" min="10" step="5" />
-                      </div>
-                      <div class="property-row">
-                        <span class="property-label">Height</span>
+                </div>
+                <div class="header-actions horizontal">
+                    <a class="icon-button" th:href="@{/}" title="Back to dashboard">
+                        <i class="fa-solid fa-chevron-left" aria-hidden="true"></i>
+                        <span class="sr-only">Back to dashboard</span>
+                    </a>
+                    <a
+                        class="button ghost"
+                        th:href="${'/view/' + broadcaster + '/broadcast'}"
+                        target="_blank"
+                        rel="noopener"
+                        >Broadcaster view</a
+                    >
+                </div>
+            </header>
+
+            <div class="admin-workspace">
+                <aside class="admin-rail">
+                    <div class="upload-row">
                         <input
-                          id="asset-height"
-                          class="number-input property-control"
-                          type="number"
-                          min="10"
-                          step="5"
+                            id="asset-file"
+                            class="file-input-field"
+                            type="file"
+                            accept="image/*,video/*,audio/*"
+                            onchange="handleFileSelection(this)"
                         />
-                      </div>
-                      <div class="property-row">
-                        <span class="property-label">Maintain AR</span>
-                        <label class="checkbox-inline toggle inline-toggle property-control">
-                          <input id="maintain-aspect" type="checkbox" checked />
-                          <span class="toggle-track" aria-hidden="true">
-                            <span class="toggle-thumb"></span>
-                          </span>
+                        <label for="asset-file" class="file-input-trigger">
+                            <span class="file-input-icon"><i class="fa-solid fa-cloud-arrow-up"></i></span>
+                            <span class="file-input-copy">
+                                <strong>Upload asset</strong>
+                                <small id="asset-file-name">No file chosen</small>
+                            </span>
                         </label>
-                      </div>
-                      <div class="property-row">
-                        <span class="property-label">Layer</span>
-                        <div class="property-control">
-                          <div class="badge-row stacked">
-                            <span class="badge">Layer <strong id="asset-z-level">1</strong></span>
-                          </div>
+                    </div>
+                    <div class="rail-body">
+                        <div class="rail-scroll">
+                            <ul id="asset-list" class="asset-list"></ul>
                         </div>
-                      </div>
                     </div>
-                  </div>
 
-                  <div class="panel-section" id="playback-section">
-                    <div class="section-header">
-                      <h5>Playback</h5>
-                    </div>
-                    <div class="stacked-field">
-                      <div class="label-row">
-                        <span>Playback speed</span>
-                        <span class="value-hint" id="asset-speed-label">100%</span>
-                      </div>
-                      <input
-                        id="asset-speed"
-                        class="range-input"
-                        type="range"
-                        min="0"
-                        max="1000"
-                        step="10"
-                        value="100"
-                      />
-                      <div class="range-meta"><span>0%</span><span>1000%</span></div>
-                    </div>
-                  </div>
+                    <div id="asset-inspector" class="rail-inspector hidden">
+                        <div class="asset-inspector">
+                            <div class="selected-asset-banner">
+                                <div class="selected-asset-main">
+                                    <div class="title-row">
+                                        <strong id="selected-asset-name">Choose an asset</strong>
+                                        <span
+                                            id="selected-asset-resolution"
+                                            class="asset-resolution subtle-text hidden"
+                                        ></span>
+                                    </div>
+                                    <p class="meta-text" id="selected-asset-meta">
+                                        Pick an asset in the list to adjust its placement and playback.
+                                    </p>
+                                    <p class="meta-text subtle-text hidden" id="selected-asset-id"></p>
+                                    <div class="badge-row asset-meta-badges" id="selected-asset-badges"></div>
+                                </div>
+                            </div>
+                            <div id="asset-controls-placeholder" class="asset-controls-placeholder">
+                                <div id="asset-controls" class="hidden asset-settings">
+                                    <div class="panel-section" id="layout-section">
+                                        <div class="section-header">
+                                            <h5>Layout & order</h5>
+                                        </div>
+                                        <div class="property-list">
+                                            <div class="property-row">
+                                                <span class="property-label">Width</span>
+                                                <input
+                                                    id="asset-width"
+                                                    class="number-input property-control"
+                                                    type="number"
+                                                    min="10"
+                                                    step="5"
+                                                />
+                                            </div>
+                                            <div class="property-row">
+                                                <span class="property-label">Height</span>
+                                                <input
+                                                    id="asset-height"
+                                                    class="number-input property-control"
+                                                    type="number"
+                                                    min="10"
+                                                    step="5"
+                                                />
+                                            </div>
+                                            <div class="property-row">
+                                                <span class="property-label">Maintain AR</span>
+                                                <label class="checkbox-inline toggle inline-toggle property-control">
+                                                    <input id="maintain-aspect" type="checkbox" checked />
+                                                    <span class="toggle-track" aria-hidden="true">
+                                                        <span class="toggle-thumb"></span>
+                                                    </span>
+                                                </label>
+                                            </div>
+                                            <div class="property-row">
+                                                <span class="property-label">Layer</span>
+                                                <div class="property-control">
+                                                    <div class="badge-row stacked">
+                                                        <span class="badge"
+                                                            >Layer <strong id="asset-z-level">1</strong></span
+                                                        >
+                                                    </div>
+                                                </div>
+                                            </div>
+                                        </div>
+                                    </div>
 
-                  <div class="panel-section" id="volume-section">
-                    <div class="section-header">
-                      <h5>Volume</h5>
-                    </div>
-                    <div class="stacked-field">
-                      <div class="label-row">
-                        <span>Playback volume</span>
-                        <span class="value-hint" id="asset-volume-label">100%</span>
-                      </div>
-                      <input
-                        id="asset-volume"
-                        class="range-input"
-                        type="range"
-                        min="0"
-                        max="200"
-                        step="1"
-                        value="100"
-                      />
-                      <div class="range-meta"><span>0%</span><span>200%</span></div>
-                    </div>
-                  </div>
+                                    <div class="panel-section" id="playback-section">
+                                        <div class="section-header">
+                                            <h5>Playback</h5>
+                                        </div>
+                                        <div class="stacked-field">
+                                            <div class="label-row">
+                                                <span>Playback speed</span>
+                                                <span class="value-hint" id="asset-speed-label">100%</span>
+                                            </div>
+                                            <input
+                                                id="asset-speed"
+                                                class="range-input"
+                                                type="range"
+                                                min="0"
+                                                max="1000"
+                                                step="10"
+                                                value="100"
+                                            />
+                                            <div class="range-meta"><span>0%</span><span>1000%</span></div>
+                                        </div>
+                                    </div>
 
-                  <div class="panel-section hidden" id="audio-section">
-                    <div class="section-header">
-                      <h5>Audio</h5>
-                    </div>
-                    <div class="property-list">
-                      <div class="property-row">
-                        <span class="property-label">Loop</span>
-                        <label class="checkbox-inline toggle inline-toggle property-control">
-                          <input id="asset-audio-loop" type="checkbox" />
-                          <span class="toggle-track" aria-hidden="true">
-                            <span class="toggle-thumb"></span>
-                          </span>
-                        </label>
-                      </div>
-                    </div>
-                    <div class="stacked-field">
-                      <div class="label-row">
-                        <span>Delay</span>
-                        <span class="value-hint" id="asset-audio-delay-label">0ms</span>
-                      </div>
-                      <input
-                        id="asset-audio-delay"
-                        class="range-input property-control"
-                        type="range"
-                        min="0"
-                        max="30000"
-                        step="100"
-                        value="0"
-                      />
-                      <div class="range-meta"><span>0ms</span><span>30s</span></div>
-                    </div>
-                    <div class="stacked-field">
-                      <div class="label-row">
-                        <span>Playback speed</span>
-                        <span class="value-hint" id="asset-audio-speed-label">1.0x</span>
-                      </div>
-                      <input
-                        id="asset-audio-speed"
-                        class="range-input"
-                        type="range"
-                        min="25"
-                        max="400"
-                        step="5"
-                        value="100"
-                      />
-                      <div class="range-meta"><span>0.25x</span><span>4x</span></div>
-                    </div>
-                    <div class="stacked-field">
-                      <div class="label-row">
-                        <span>Pitch</span>
-                        <span class="value-hint" id="asset-audio-pitch-label">100%</span>
-                      </div>
-                      <input
-                        id="asset-audio-pitch"
-                        class="range-input property-control"
-                        type="range"
-                        min="50"
-                        max="200"
-                        step="5"
-                        value="100"
-                      />
-                      <div class="range-meta"><span>50%</span><span>200%</span></div>
-                    </div>
-                  </div>
-                  <div class="control-actions compact unified-actions" id="asset-actions">
-                    <button type="button" onclick="sendToBack()" class="secondary" title="Send to back">
-                      <i class="fa-solid fa-angles-down"></i>
-                    </button>
-                    <button type="button" onclick="bringBackward()" class="secondary" title="Move backward">
-                      <i class="fa-solid fa-arrow-down"></i>
-                    </button>
-                    <button type="button" onclick="bringForward()" class="secondary" title="Move forward">
-                      <i class="fa-solid fa-arrow-up"></i>
-                    </button>
-                    <button type="button" onclick="bringToFront()" class="secondary" title="Bring to front">
-                      <i class="fa-solid fa-angles-up"></i>
-                    </button>
-                    <button type="button" onclick="recenterSelectedAsset()" class="secondary" title="Center on canvas">
-                      <i class="fa-solid fa-bullseye"></i>
-                    </button>
-                    <button type="button" onclick="nudgeRotation(-5)" class="secondary" title="Rotate left">
-                      <i class="fa-solid fa-rotate-left"></i>
-                    </button>
-                    <button type="button" onclick="nudgeRotation(5)" class="secondary" title="Rotate right">
-                      <i class="fa-solid fa-rotate-right"></i>
-                    </button>
-                    <button
-                      id="selected-asset-visibility"
-                      class="secondary"
-                      type="button"
-                      title="Hide asset"
-                      disabled
-                      data-audio-enabled="true"
-                    >
-                      <i class="fa-solid fa-eye-slash"></i>
-                    </button>
-                    <button
-                      id="selected-asset-delete"
-                      class="secondary danger"
-                      type="button"
-                      title="Delete asset"
-                      disabled
-                      data-audio-enabled="true"
-                    >
-                      <i class="fa-solid fa-trash"></i>
-                    </button>
-                  </div>
-                </div>
-              </div>
-            </div>
-          </div>
-        </aside>
+                                    <div class="panel-section" id="volume-section">
+                                        <div class="section-header">
+                                            <h5>Volume</h5>
+                                        </div>
+                                        <div class="stacked-field">
+                                            <div class="label-row">
+                                                <span>Playback volume</span>
+                                                <span class="value-hint" id="asset-volume-label">100%</span>
+                                            </div>
+                                            <input
+                                                id="asset-volume"
+                                                class="range-input"
+                                                type="range"
+                                                min="0"
+                                                max="200"
+                                                step="1"
+                                                value="100"
+                                            />
+                                            <div class="range-meta"><span>0%</span><span>200%</span></div>
+                                        </div>
+                                    </div>
 
-        <section class="canvas-stack">
-          <div class="canvas-topbar">
-            <div>
-              <p class="eyebrow subtle">Canvas</p>
-              <h3 class="panel-title">Live composition</h3>
+                                    <div class="panel-section hidden" id="audio-section">
+                                        <div class="section-header">
+                                            <h5>Audio</h5>
+                                        </div>
+                                        <div class="property-list">
+                                            <div class="property-row">
+                                                <span class="property-label">Loop</span>
+                                                <label class="checkbox-inline toggle inline-toggle property-control">
+                                                    <input id="asset-audio-loop" type="checkbox" />
+                                                    <span class="toggle-track" aria-hidden="true">
+                                                        <span class="toggle-thumb"></span>
+                                                    </span>
+                                                </label>
+                                            </div>
+                                        </div>
+                                        <div class="stacked-field">
+                                            <div class="label-row">
+                                                <span>Delay</span>
+                                                <span class="value-hint" id="asset-audio-delay-label">0ms</span>
+                                            </div>
+                                            <input
+                                                id="asset-audio-delay"
+                                                class="range-input property-control"
+                                                type="range"
+                                                min="0"
+                                                max="30000"
+                                                step="100"
+                                                value="0"
+                                            />
+                                            <div class="range-meta"><span>0ms</span><span>30s</span></div>
+                                        </div>
+                                        <div class="stacked-field">
+                                            <div class="label-row">
+                                                <span>Playback speed</span>
+                                                <span class="value-hint" id="asset-audio-speed-label">1.0x</span>
+                                            </div>
+                                            <input
+                                                id="asset-audio-speed"
+                                                class="range-input"
+                                                type="range"
+                                                min="25"
+                                                max="400"
+                                                step="5"
+                                                value="100"
+                                            />
+                                            <div class="range-meta"><span>0.25x</span><span>4x</span></div>
+                                        </div>
+                                        <div class="stacked-field">
+                                            <div class="label-row">
+                                                <span>Pitch</span>
+                                                <span class="value-hint" id="asset-audio-pitch-label">100%</span>
+                                            </div>
+                                            <input
+                                                id="asset-audio-pitch"
+                                                class="range-input property-control"
+                                                type="range"
+                                                min="50"
+                                                max="200"
+                                                step="5"
+                                                value="100"
+                                            />
+                                            <div class="range-meta"><span>50%</span><span>200%</span></div>
+                                        </div>
+                                    </div>
+                                    <div class="control-actions compact unified-actions" id="asset-actions">
+                                        <button
+                                            type="button"
+                                            onclick="sendToBack()"
+                                            class="secondary"
+                                            title="Send to back"
+                                        >
+                                            <i class="fa-solid fa-angles-down"></i>
+                                        </button>
+                                        <button
+                                            type="button"
+                                            onclick="bringBackward()"
+                                            class="secondary"
+                                            title="Move backward"
+                                        >
+                                            <i class="fa-solid fa-arrow-down"></i>
+                                        </button>
+                                        <button
+                                            type="button"
+                                            onclick="bringForward()"
+                                            class="secondary"
+                                            title="Move forward"
+                                        >
+                                            <i class="fa-solid fa-arrow-up"></i>
+                                        </button>
+                                        <button
+                                            type="button"
+                                            onclick="bringToFront()"
+                                            class="secondary"
+                                            title="Bring to front"
+                                        >
+                                            <i class="fa-solid fa-angles-up"></i>
+                                        </button>
+                                        <button
+                                            type="button"
+                                            onclick="recenterSelectedAsset()"
+                                            class="secondary"
+                                            title="Center on canvas"
+                                        >
+                                            <i class="fa-solid fa-bullseye"></i>
+                                        </button>
+                                        <button
+                                            type="button"
+                                            onclick="nudgeRotation(-5)"
+                                            class="secondary"
+                                            title="Rotate left"
+                                        >
+                                            <i class="fa-solid fa-rotate-left"></i>
+                                        </button>
+                                        <button
+                                            type="button"
+                                            onclick="nudgeRotation(5)"
+                                            class="secondary"
+                                            title="Rotate right"
+                                        >
+                                            <i class="fa-solid fa-rotate-right"></i>
+                                        </button>
+                                        <button
+                                            id="selected-asset-visibility"
+                                            class="secondary"
+                                            type="button"
+                                            title="Hide asset"
+                                            disabled
+                                            data-audio-enabled="true"
+                                        >
+                                            <i class="fa-solid fa-eye-slash"></i>
+                                        </button>
+                                        <button
+                                            id="selected-asset-delete"
+                                            class="secondary danger"
+                                            type="button"
+                                            title="Delete asset"
+                                            disabled
+                                            data-audio-enabled="true"
+                                        >
+                                            <i class="fa-solid fa-trash"></i>
+                                        </button>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </aside>
+
+                <section class="canvas-stack">
+                    <div class="canvas-topbar">
+                        <div>
+                            <p class="eyebrow subtle">Canvas</p>
+                            <h3 class="panel-title">Live composition</h3>
+                        </div>
+                        <div class="canvas-meta">
+                            <span class="badge soft" id="canvas-resolution">1920 x 1080</span>
+                            <span class="badge outline" id="canvas-scale">100%</span>
+                        </div>
+                    </div>
+                    <div class="canvas-surface">
+                        <div class="overlay canvas-boundary" id="admin-overlay">
+                            <div class="canvas-guides"></div>
+                            <canvas id="admin-canvas"></canvas>
+                        </div>
+                        <div class="canvas-footnote">
+                            <p>Edges of the canvas are outlined to match the aspect ratio of the stream.</p>
+                        </div>
+                    </div>
+                </section>
             </div>
-            <div class="canvas-meta">
-              <span class="badge soft" id="canvas-resolution">1920 x 1080</span>
-              <span class="badge outline" id="canvas-scale">100%</span>
-            </div>
-          </div>
-          <div class="canvas-surface">
-            <div class="overlay canvas-boundary" id="admin-overlay">
-              <div class="canvas-guides"></div>
-              <canvas id="admin-canvas"></canvas>
-            </div>
-            <div class="canvas-footnote">
-              <p>Edges of the canvas are outlined to match the aspect ratio of the stream.</p>
-            </div>
-          </div>
-        </section>
-      </div>
-    </div>
-    <script th:inline="javascript">
-      const broadcaster = /*[[${broadcaster}]]*/ '';
-      const username = /*[[${username}]]*/ '';
-      const UPLOAD_LIMIT_BYTES = /*[[${uploadLimitBytes}]]*/ 0;
-      const SETTINGS = /*[[${settingsJson}]]*/;
-    </script>
-    <script src="/js/cookie-consent.js"></script>
-    <script src="/js/toast.js"></script>
-    <script src="/js/admin.js"></script>
-  </body>
+        </div>
+        <script th:inline="javascript">
+            const broadcaster = /*[[${broadcaster}]]*/ '';
+            const username = /*[[${username}]]*/ '';
+            const UPLOAD_LIMIT_BYTES = /*[[${uploadLimitBytes}]]*/ 0;
+            const SETTINGS = /*[[${settingsJson}]]*/;
+        </script>
+        <script src="/js/cookie-consent.js"></script>
+        <script src="/js/toast.js"></script>
+        <script src="/js/admin.js"></script>
+    </body>
 </html>

src/main/resources/templates/broadcast.html

@@ -1,20 +1,20 @@
 <!doctype html>
 <html lang="en" xmlns:th="http://www.thymeleaf.org">
-  <head>
-    <meta charset="UTF-8" />
-    <title>Imgfloat Broadcast</title>
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="stylesheet" href="/css/styles.css" />
-    <script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/lib/stomp.min.js"></script>
-  </head>
-  <body class="broadcast-body">
-    <canvas id="broadcast-canvas"></canvas>
-    <script th:inline="javascript">
-      const broadcaster = /*[[${broadcaster}]]*/ "";
-    </script>
-    <script src="/js/cookie-consent.js"></script>
-    <script src="/js/toast.js"></script>
-    <script src="/js/broadcast.js"></script>
-  </body>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Imgfloat Broadcast</title>
+        <link rel="icon" href="/favicon.ico" />
+        <link rel="stylesheet" href="/css/styles.css" />
+        <script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/lib/stomp.min.js"></script>
+    </head>
+    <body class="broadcast-body">
+        <canvas id="broadcast-canvas"></canvas>
+        <script th:inline="javascript">
+            const broadcaster = /*[[${broadcaster}]]*/ "";
+        </script>
+        <script src="/js/cookie-consent.js"></script>
+        <script src="/js/toast.js"></script>
+        <script src="/js/broadcast.js"></script>
+    </body>
 </html>

src/main/resources/templates/channels.html

@@ -1,46 +1,46 @@
 <!doctype html>
 <html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <title>Browse channels - Imgfloat</title>
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="stylesheet" href="/css/styles.css" />
-  </head>
-  <body class="channels-body">
-    <div class="channels-shell">
-      <header class="channels-header">
-        <div class="brand">
-          <div class="brand-mark">IF</div>
-          <div>
-            <div class="brand-title">Imgfloat</div>
-            <div class="brand-subtitle">Twitch overlay manager</div>
-          </div>
-        </div>
-      </header>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Browse channels - Imgfloat</title>
+        <link rel="icon" href="/favicon.ico" />
+        <link rel="stylesheet" href="/css/styles.css" />
+    </head>
+    <body class="channels-body">
+        <div class="channels-shell">
+            <header class="channels-header">
+                <div class="brand">
+                    <div class="brand-mark">IF</div>
+                    <div>
+                        <div class="brand-title">Imgfloat</div>
+                        <div class="brand-subtitle">Twitch overlay manager</div>
+                    </div>
+                </div>
+            </header>
 
-      <main class="channels-main">
-        <section class="channel-card">
-          <p class="eyebrow subtle">Broadcast overlay</p>
-          <h1>Open a channel</h1>
-          <p class="muted">Type the channel name to jump straight to their overlay.</p>
-          <form id="channel-search-form" class="channel-form">
-            <label class="sr-only" for="channel-search">Channel name</label>
-            <input
-              id="channel-search"
-              name="channel"
-              class="text-input"
-              type="text"
-              list="channel-suggestions"
-              placeholder="Type a channel name"
-              autocomplete="off"
-            />
-            <datalist id="channel-suggestions"></datalist>
-            <button type="submit" class="button block">Open overlay</button>
-          </form>
-        </section>
-      </main>
-    </div>
-    <script src="/js/cookie-consent.js"></script>
-    <script src="/js/landing.js"></script>
-  </body>
+            <main class="channels-main">
+                <section class="channel-card">
+                    <p class="eyebrow subtle">Broadcast overlay</p>
+                    <h1>Open a channel</h1>
+                    <p class="muted">Type the channel name to jump straight to their overlay.</p>
+                    <form id="channel-search-form" class="channel-form">
+                        <label class="sr-only" for="channel-search">Channel name</label>
+                        <input
+                            id="channel-search"
+                            name="channel"
+                            class="text-input"
+                            type="text"
+                            list="channel-suggestions"
+                            placeholder="Type a channel name"
+                            autocomplete="off"
+                        />
+                        <datalist id="channel-suggestions"></datalist>
+                        <button type="submit" class="button block">Open overlay</button>
+                    </form>
+                </section>
+            </main>
+        </div>
+        <script src="/js/cookie-consent.js"></script>
+        <script src="/js/landing.js"></script>
+    </body>
 </html>

src/main/resources/templates/dashboard.html

@@ -1,119 +1,119 @@
 <!doctype html>
 <html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <title>Imgfloat Dashboard</title>
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="stylesheet" href="/css/styles.css" />
-  </head>
-  <body class="dashboard-body">
-    <div class="dashboard-shell">
-      <header class="dashboard-topbar">
-        <div class="brand">
-          <img class="brand-mark" src="/img/brand.png"/>
-          <div>
-            <div class="brand-title">Imgfloat</div>
-            <div class="brand-subtitle">Twitch overlay manager</div>
-          </div>
-        </div>
-        <div class="user-pill">
-          <span class="eyebrow subtle">Signed in as</span>
-          <span class="user-display" th:text="${username}">user</span>
-        </div>
-      </header>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Imgfloat Dashboard</title>
+        <link rel="icon" href="/favicon.ico" />
+        <link rel="stylesheet" href="/css/styles.css" />
+    </head>
+    <body class="dashboard-body">
+        <div class="dashboard-shell">
+            <header class="dashboard-topbar">
+                <div class="brand">
+                    <img class="brand-mark" src="/img/brand.png" />
+                    <div>
+                        <div class="brand-title">Imgfloat</div>
+                        <div class="brand-subtitle">Twitch overlay manager</div>
+                    </div>
+                </div>
+                <div class="user-pill">
+                    <span class="eyebrow subtle">Signed in as</span>
+                    <span class="user-display" th:text="${username}">user</span>
+                </div>
+            </header>
 
-      <section class="card">
-        <p class="eyebrow">Navigation</p>
-        <h3>Shortcuts</h3>
-        <p class="muted">Jump into your overlay</p>
-        <div class="panel-actions">
-          <a class="button block" th:href="@{'/view/' + ${channel} + '/broadcast'}">Open broadcast overlay</a>
-          <a class="button ghost block" th:href="@{'/view/' + ${channel} + '/admin'}">Open admin console</a>
-          <a class="button ghost block" href="/channels">Browse channels</a>
-          <form class="block" th:action="@{/logout}" method="post">
-            <button class="secondary block" type="submit">Logout</button>
-          </form>
-        </div>
-      </section>
+            <section class="card">
+                <p class="eyebrow">Navigation</p>
+                <h3>Shortcuts</h3>
+                <p class="muted">Jump into your overlay</p>
+                <div class="panel-actions">
+                    <a class="button block" th:href="@{'/view/' + ${channel} + '/broadcast'}">Open broadcast overlay</a>
+                    <a class="button ghost block" th:href="@{'/view/' + ${channel} + '/admin'}">Open admin console</a>
+                    <a class="button ghost block" href="/channels">Browse channels</a>
+                    <form class="block" th:action="@{/logout}" method="post">
+                        <button class="secondary block" type="submit">Logout</button>
+                    </form>
+                </div>
+            </section>
 
-      <section class="card">
-        <p class="eyebrow">Settings</p>
-        <h3>Overlay dimensions</h3>
-        <p class="muted">Match these with your OBS resolution.</p>
-        <div class="control-grid">
-          <label>
-            Width
-            <input id="canvas-width" type="number" min="100" step="10" />
-          </label>
-          <label>
-            Height
-            <input id="canvas-height" type="number" min="100" step="10" />
-          </label>
-        </div>
-        <div class="control-actions">
-          <button type="button" onclick="saveCanvasSettings()">Save canvas size</button>
-          <span id="canvas-status" class="muted"></span>
-        </div>
-      </section>
+            <section class="card">
+                <p class="eyebrow">Settings</p>
+                <h3>Overlay dimensions</h3>
+                <p class="muted">Match these with your OBS resolution.</p>
+                <div class="control-grid">
+                    <label>
+                        Width
+                        <input id="canvas-width" type="number" min="100" step="10" />
+                    </label>
+                    <label>
+                        Height
+                        <input id="canvas-height" type="number" min="100" step="10" />
+                    </label>
+                </div>
+                <div class="control-actions">
+                    <button type="button" onclick="saveCanvasSettings()">Save canvas size</button>
+                    <span id="canvas-status" class="muted"></span>
+                </div>
+            </section>
 
-      <section class="card-grid two-col">
-        <div class="card">
-          <div class="card-header">
-            <div>
-              <p class="eyebrow">Collaboration</p>
-              <h3>Channel admins</h3>
-              <p class="muted">Invite moderators to help manage assets.</p>
-            </div>
-          </div>
-          <div class="inline-form">
-            <input id="new-admin" placeholder="Twitch username" />
-            <button type="button" onclick="addAdmin()">Add admin</button>
-          </div>
-          <div class="card-section">
-            <div class="section-header">
-              <h4 class="list-title">Channel Admins</h4>
-              <p class="muted">Users who can currently modify your overlay.</p>
-            </div>
-            <ul id="admin-list" class="stacked-list"></ul>
-          </div>
-          <div class="card-section">
-            <div class="section-header">
-              <h4 class="list-title">Your Twitch moderators</h4>
-              <p class="muted">Add moderators who already help run your channel.</p>
-            </div>
-            <ul id="admin-suggestions" class="stacked-list"></ul>
-          </div>
-        </div>
-      </section>
+            <section class="card-grid two-col">
+                <div class="card">
+                    <div class="card-header">
+                        <div>
+                            <p class="eyebrow">Collaboration</p>
+                            <h3>Channel admins</h3>
+                            <p class="muted">Invite moderators to help manage assets.</p>
+                        </div>
+                    </div>
+                    <div class="inline-form">
+                        <input id="new-admin" placeholder="Twitch username" />
+                        <button type="button" onclick="addAdmin()">Add admin</button>
+                    </div>
+                    <div class="card-section">
+                        <div class="section-header">
+                            <h4 class="list-title">Channel Admins</h4>
+                            <p class="muted">Users who can currently modify your overlay.</p>
+                        </div>
+                        <ul id="admin-list" class="stacked-list"></ul>
+                    </div>
+                    <div class="card-section">
+                        <div class="section-header">
+                            <h4 class="list-title">Your Twitch moderators</h4>
+                            <p class="muted">Add moderators who already help run your channel.</p>
+                        </div>
+                        <ul id="admin-suggestions" class="stacked-list"></ul>
+                    </div>
+                </div>
+            </section>
 
-      <section th:if="${adminChannels != null}" class="card">
-        <div class="card-header">
-          <div>
-            <p class="eyebrow">Your access</p>
-            <h3>Channels you administer</h3>
-            <p class="muted">Jump into a teammate's overlay console.</p>
-          </div>
-        </div>
-        <p th:if="${#lists.isEmpty(adminChannels)}">No admin invitations yet.</p>
-        <ul th:if="${!#lists.isEmpty(adminChannels)}" class="stacked-list">
-          <li th:each="channelName : ${adminChannels}" class="stacked-list-item">
-            <div>
-              <p class="list-title" th:text="${channelName}">channel</p>
-              <p class="muted">Channel admin access</p>
-            </div>
-            <a class="button ghost" th:href="@{'/view/' + ${channelName} + '/admin'}">Open</a>
-          </li>
-        </ul>
-      </section>
+            <section th:if="${adminChannels != null}" class="card">
+                <div class="card-header">
+                    <div>
+                        <p class="eyebrow">Your access</p>
+                        <h3>Channels you administer</h3>
+                        <p class="muted">Jump into a teammate's overlay console.</p>
+                    </div>
+                </div>
+                <p th:if="${#lists.isEmpty(adminChannels)}">No admin invitations yet.</p>
+                <ul th:if="${!#lists.isEmpty(adminChannels)}" class="stacked-list">
+                    <li th:each="channelName : ${adminChannels}" class="stacked-list-item">
+                        <div>
+                            <p class="list-title" th:text="${channelName}">channel</p>
+                            <p class="muted">Channel admin access</p>
+                        </div>
+                        <a class="button ghost" th:href="@{'/view/' + ${channelName} + '/admin'}">Open</a>
+                    </li>
+                </ul>
+            </section>
 
-      <section class="card download-card-block" th:insert="fragments/downloads :: downloads"></section>
-    </div>
-    <script src="/js/cookie-consent.js"></script>
-    <script src="/js/toast.js"></script>
-    <script src="/js/downloads.js"></script>
-    <script th:inline="javascript">
-      const broadcaster = /*[[${channel}]]*/ "";
-    </script>
-    <script src="/js/dashboard.js"></script>
-  </body>
+            <section class="card download-card-block" th:insert="fragments/downloads :: downloads"></section>
+        </div>
+        <script src="/js/cookie-consent.js"></script>
+        <script src="/js/toast.js"></script>
+        <script src="/js/downloads.js"></script>
+        <script th:inline="javascript">
+            const broadcaster = /*[[${channel}]]*/ "";
+        </script>
+        <script src="/js/dashboard.js"></script>
+    </body>
 </html>

src/main/resources/templates/fragments/downloads.html

@@ -1,44 +1,44 @@
 <th:block th:fragment="downloads">
-  <div class="download-header">
-    <p class="eyebrow">Desktop app</p>
-    <h2>Download Imgfloat</h2>
-  </div>
-  <div class="download-grid">
-    <div class="download-card" data-platform="mac">
-      <div class="download-card-header">
-        <p class="eyebrow">macOS</p>
-        <span class="badge soft recommended-badge hidden">Recommended</span>
-      </div>
-      <p class="muted">Apple Silicon build (ARM64)</p>
-      <a
-        class="button block"
-        th:href="'https://github.com/Kruhlmann/imgfloat-j/releases/download/' + ${releaseVersion} + '/Imgfloat-' + ${releaseVersion} + '-arm64.dmg'"
-        >Download DMG</a
-      >
+    <div class="download-header">
+        <p class="eyebrow">Desktop app</p>
+        <h2>Download Imgfloat</h2>
     </div>
-    <div class="download-card" data-platform="windows">
-      <div class="download-card-header">
-        <p class="eyebrow">Windows</p>
-        <span class="badge soft recommended-badge hidden">Recommended</span>
-      </div>
-      <p class="muted">Installer for Windows 10 and 11</p>
-      <a
-        class="button block"
-        th:href="'https://github.com/Kruhlmann/imgfloat-j/releases/download/' + ${releaseVersion} + '/Imgfloat.Setup.' + ${releaseVersion} + '.exe'"
-        >Download EXE</a
-      >
+    <div class="download-grid">
+        <div class="download-card" data-platform="mac">
+            <div class="download-card-header">
+                <p class="eyebrow">macOS</p>
+                <span class="badge soft recommended-badge hidden">Recommended</span>
+            </div>
+            <p class="muted">Apple Silicon build (ARM64)</p>
+            <a
+                class="button block"
+                th:href="'https://github.com/Kruhlmann/imgfloat-j/releases/download/' + ${releaseVersion} + '/Imgfloat-' + ${releaseVersion} + '-arm64.dmg'"
+                >Download DMG</a
+            >
+        </div>
+        <div class="download-card" data-platform="windows">
+            <div class="download-card-header">
+                <p class="eyebrow">Windows</p>
+                <span class="badge soft recommended-badge hidden">Recommended</span>
+            </div>
+            <p class="muted">Installer for Windows 10 and 11</p>
+            <a
+                class="button block"
+                th:href="'https://github.com/Kruhlmann/imgfloat-j/releases/download/' + ${releaseVersion} + '/Imgfloat.Setup.' + ${releaseVersion} + '.exe'"
+                >Download EXE</a
+            >
+        </div>
+        <div class="download-card" data-platform="linux">
+            <div class="download-card-header">
+                <p class="eyebrow">Linux</p>
+                <span class="badge soft recommended-badge hidden">Recommended</span>
+            </div>
+            <p class="muted">AppImage for most distributions</p>
+            <a
+                class="button block"
+                th:href="'https://github.com/Kruhlmann/imgfloat-j/releases/download/' + ${releaseVersion} + '/Imgfloat-' + ${releaseVersion} + '.AppImage'"
+                >Download AppImage</a
+            >
+        </div>
     </div>
-    <div class="download-card" data-platform="linux">
-      <div class="download-card-header">
-        <p class="eyebrow">Linux</p>
-        <span class="badge soft recommended-badge hidden">Recommended</span>
-      </div>
-      <p class="muted">AppImage for most distributions</p>
-      <a
-        class="button block"
-        th:href="'https://github.com/Kruhlmann/imgfloat-j/releases/download/' + ${releaseVersion} + '/Imgfloat-' + ${releaseVersion} + '.AppImage'"
-        >Download AppImage</a
-      >
-    </div>
-  </div>
 </th:block>

src/main/resources/templates/index.html

@@ -1,48 +1,50 @@
 <!doctype html>
 <html lang="en" xmlns:th="http://www.thymeleaf.org">
-  <head>
-    <meta charset="UTF-8" />
-    <title>Imgfloat - Twitch overlay</title>
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="stylesheet" href="/css/styles.css" />
-  </head>
-  <body class="landing-body">
-    <div class="landing">
-      <header class="landing-header">
-        <div class="brand">
-          <img class="brand-mark" src="/img/brand.png"/>
-          <div>
-            <div class="brand-title">Imgfloat</div>
-            <div class="brand-subtitle">Twitch overlay manager</div>
-          </div>
-        </div>
-      </header>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Imgfloat - Twitch overlay</title>
+        <link rel="icon" href="/favicon.ico" />
+        <link rel="stylesheet" href="/css/styles.css" />
+    </head>
+    <body class="landing-body">
+        <div class="landing">
+            <header class="landing-header">
+                <div class="brand">
+                    <img class="brand-mark" src="/img/brand.png" />
+                    <div>
+                        <div class="brand-title">Imgfloat</div>
+                        <div class="brand-subtitle">Twitch overlay manager</div>
+                    </div>
+                </div>
+            </header>
 
-      <main class="hero hero-compact">
-        <div class="hero-text">
-          <p class="eyebrow">Overlay toolkit</p>
-          <h1>Collaborative real-time Twitch overlay</h1>
-          <p class="lead">Customize your Twitch stream with audio, video and images updated by your mods in real-time</p>
-          <div class="cta-row">
-            <a class="button" href="/oauth2/authorization/twitch">Login with Twitch</a>
-          </div>
-        </div>
-      </main>
+            <main class="hero hero-compact">
+                <div class="hero-text">
+                    <p class="eyebrow">Overlay toolkit</p>
+                    <h1>Collaborative real-time Twitch overlay</h1>
+                    <p class="lead">
+                        Customize your Twitch stream with audio, video and images updated by your mods in real-time
+                    </p>
+                    <div class="cta-row">
+                        <a class="button" href="/oauth2/authorization/twitch">Login with Twitch</a>
+                    </div>
+                </div>
+            </main>
 
-      <section class="download-section" th:insert="fragments/downloads :: downloads"></section>
+            <section class="download-section" th:insert="fragments/downloads :: downloads"></section>
 
-      <footer class="landing-meta">
-        <div class="build-chip">
-          <span class="muted">License</span>
-          <span class="version-badge">MIT</span>
+            <footer class="landing-meta">
+                <div class="build-chip">
+                    <span class="muted">License</span>
+                    <span class="version-badge">MIT</span>
+                </div>
+                <div class="build-chip">
+                    <span class="muted">Build</span>
+                    <span class="version-badge" th:text="${version}">unknown</span>
+                </div>
+            </footer>
         </div>
-        <div class="build-chip">
-          <span class="muted">Build</span>
-          <span class="version-badge" th:text="${version}">unknown</span>
-        </div>
-      </footer>
-    </div>
-    <script src="/js/cookie-consent.js"></script>
-    <script src="/js/downloads.js"></script>
-  </body>
+        <script src="/js/cookie-consent.js"></script>
+        <script src="/js/downloads.js"></script>
+    </body>
 </html>

src/main/resources/templates/settings.html

@@ -1,256 +1,269 @@
 <!doctype html>
 <html lang="en" xmlns:th="http://www.thymeleaf.org">
-  <head>
-    <meta charset="UTF-8" />
-    <title>Imgfloat Admin</title>
-    <link rel="icon" href="/favicon.ico" />
-    <link rel="stylesheet" href="/css/styles.css" />
-    <link
-      rel="stylesheet"
-      href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css"
-      integrity="sha512-SnH5WK+bZxgPHs44uWIX+LLJAJ9/2PkPKZ5QiAj6Ta86w+fsb2TkcmfRyVX3pBnMFcV7oQPJkl9QevSCWr3W6A=="
-      crossorigin="anonymous"
-      referrerpolicy="no-referrer"
-    />
-    <script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/lib/stomp.min.js"></script>
-  </head>
-  <body class="settings-body">
-    <div class="settings-shell">
-      <header class="settings-header">
-        <div class="brand">
-          <div class="brand-mark">IF</div>
-          <div>
-            <div class="brand-title">Imgfloat</div>
-            <div class="brand-subtitle">Twitch overlay manager</div>
-          </div>
+    <head>
+        <meta charset="UTF-8" />
+        <title>Imgfloat Admin</title>
+        <link rel="icon" href="/favicon.ico" />
+        <link rel="stylesheet" href="/css/styles.css" />
+        <link
+            rel="stylesheet"
+            href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css"
+            integrity="sha512-SnH5WK+bZxgPHs44uWIX+LLJAJ9/2PkPKZ5QiAj6Ta86w+fsb2TkcmfRyVX3pBnMFcV7oQPJkl9QevSCWr3W6A=="
+            crossorigin="anonymous"
+            referrerpolicy="no-referrer"
+        />
+        <script src="https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/lib/stomp.min.js"></script>
+    </head>
+    <body class="settings-body">
+        <div class="settings-shell">
+            <header class="settings-header">
+                <div class="brand">
+                    <div class="brand-mark">IF</div>
+                    <div>
+                        <div class="brand-title">Imgfloat</div>
+                        <div class="brand-subtitle">Twitch overlay manager</div>
+                    </div>
+                </div>
+            </header>
+
+            <main class="settings-main">
+                <section class="settings-card settings-hero">
+                    <div class="hero-copy">
+                        <p class="eyebrow subtle">System administrator settings</p>
+                        <h1>Application defaults</h1>
+                        <p class="muted">
+                            Configure overlay performance and audio guardrails for every channel using Imgfloat. These
+                            settings are applied globally.
+                        </p>
+                        <div class="badge-row">
+                            <span class="badge soft"><i class="fa-solid fa-gauge-high"></i> Performance tuned</span>
+                            <span class="badge"><i class="fa-solid fa-cloud"></i> Server-wide</span>
+                            <span class="badge subtle"><i class="fa-solid fa-gear"></i> Admin only</span>
+                        </div>
+                    </div>
+                    <div class="stat-grid compact">
+                        <div class="stat">
+                            <p class="stat-label">Canvas FPS</p>
+                            <p class="stat-value" id="stat-canvas-fps">--</p>
+                            <p class="stat-subtitle">Longest side <span id="stat-canvas-size">--</span></p>
+                        </div>
+                        <div class="stat">
+                            <p class="stat-label">Playback speed</p>
+                            <p class="stat-value" id="stat-playback-range">--</p>
+                            <p class="stat-subtitle">Applies to all animations</p>
+                        </div>
+                        <div class="stat">
+                            <p class="stat-label">Audio pitch</p>
+                            <p class="stat-value" id="stat-audio-range">--</p>
+                            <p class="stat-subtitle">Fraction of original clip</p>
+                        </div>
+                        <div class="stat">
+                            <p class="stat-label">Volume limits</p>
+                            <p class="stat-value" id="stat-volume-range">--</p>
+                            <p class="stat-subtitle">Keeps alerts comfortable</p>
+                        </div>
+                    </div>
+                </section>
+
+                <div class="settings-layout">
+                    <section class="settings-card settings-panel">
+                        <div class="section-heading">
+                            <div>
+                                <p class="eyebrow subtle">Overlay defaults</p>
+                                <h2>Performance & audio budget</h2>
+                                <p class="muted tiny">
+                                    Tune the canvas and audio guardrails to keep overlays smooth and balanced.
+                                </p>
+                            </div>
+                        </div>
+
+                        <form novalidate id="settings-form" class="settings-form">
+                            <div class="form-section">
+                                <div class="form-heading">
+                                    <p class="eyebrow subtle">Canvas</p>
+                                    <h3>Rendering budget</h3>
+                                    <p class="muted tiny">
+                                        Match FPS and max dimensions to your streaming canvas for consistent overlays.
+                                    </p>
+                                </div>
+                                <div class="control-grid split-row">
+                                    <label for="canvas-fps"
+                                        >Canvas FPS
+                                        <input
+                                            id="canvas-fps"
+                                            name="canvas-fps"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="numeric"
+                                            pattern="^[1-9]\d*$"
+                                            placeholder="60"
+                                        />
+                                    </label>
+
+                                    <label for="canvas-size"
+                                        >Canvas max side length (pixels)
+                                        <input
+                                            id="canvas-size"
+                                            name="canvas-size"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="numeric"
+                                            pattern="^[1-9]\d*$"
+                                            placeholder="1920"
+                                        />
+                                    </label>
+                                </div>
+                                <p class="field-hint">
+                                    Use the longest edge of your OBS browser source to prevent stretching.
+                                </p>
+                            </div>
+
+                            <div class="form-section">
+                                <div class="form-heading">
+                                    <p class="eyebrow subtle">Playback</p>
+                                    <h3>Animation speed limits</h3>
+                                    <p class="muted tiny">
+                                        Bound default speeds between 0 and 1 so clips run predictably.
+                                    </p>
+                                </div>
+                                <div class="control-grid split-row">
+                                    <label for="min-playback-speed"
+                                        >Min playback speed
+                                        <input
+                                            id="min-playback-speed"
+                                            name="min-playback-speed"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="decimal"
+                                            pattern="^(0(\.\d+)?|1(\.0+)?)$"
+                                            placeholder="0.5"
+                                        />
+                                    </label>
+
+                                    <label for="max-playback-speed"
+                                        >Max playback speed
+                                        <input
+                                            id="max-playback-speed"
+                                            name="max-playback-speed"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="decimal"
+                                            pattern="^(0(\.\d+)?|1(\.0+)?)$"
+                                            placeholder="1.0"
+                                        />
+                                    </label>
+                                </div>
+                                <p class="field-hint">
+                                    Keep the maximum at 1.0 to avoid speeding overlays beyond their source frame rate.
+                                </p>
+                            </div>
+
+                            <div class="form-section">
+                                <div class="form-heading">
+                                    <p class="eyebrow subtle">Audio</p>
+                                    <h3>Pitch & volume guardrails</h3>
+                                    <p class="muted tiny">
+                                        Prevent harsh audio by bounding pitch and volume as fractions of the source.
+                                    </p>
+                                </div>
+                                <div class="control-grid split-row">
+                                    <label for="min-audio-pitch"
+                                        >Min audio pitch
+                                        <input
+                                            id="min-audio-pitch"
+                                            name="min-audio-pitch"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="decimal"
+                                            pattern="^(0(\.\d+)?|1(\.0+)?)$"
+                                            placeholder="0.8"
+                                        />
+                                    </label>
+
+                                    <label for="max-audio-pitch"
+                                        >Max audio pitch
+                                        <input
+                                            id="max-audio-pitch"
+                                            name="max-audio-pitch"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="decimal"
+                                            pattern="^(0(\.\d+)?|1(\.0+)?)$"
+                                            placeholder="1.0"
+                                        />
+                                    </label>
+                                </div>
+                                <div class="control-grid split-row">
+                                    <label for="min-volume"
+                                        >Min volume
+                                        <input
+                                            id="min-volume"
+                                            name="min-volume"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="decimal"
+                                            pattern="^(0(\.\d+)?|1(\.0+)?)$"
+                                            placeholder="0.2"
+                                        />
+                                    </label>
+
+                                    <label for="max-volume"
+                                        >Max volume
+                                        <input
+                                            id="max-volume"
+                                            name="max-volume"
+                                            class="text-input"
+                                            type="text"
+                                            inputmode="decimal"
+                                            pattern="^(0(\.\d+)?|1(\.0+)?)$"
+                                            placeholder="1.0"
+                                        />
+                                    </label>
+                                </div>
+                                <p class="field-hint">
+                                    Volume and pitch values are percentages of the original clip between 0 and 1.
+                                </p>
+                            </div>
+
+                            <div class="form-footer">
+                                <p id="settings-status" class="status-chip">No changes yet.</p>
+                                <button id="settings-submit-button" type="submit" class="button" disabled>
+                                    Save settings
+                                </button>
+                            </div>
+                        </form>
+                    </section>
+
+                    <aside class="settings-sidebar">
+                        <section class="settings-card info-card">
+                            <p class="eyebrow subtle">Checklist</p>
+                            <h3>Before you save</h3>
+                            <ul class="hint-list">
+                                <li>Match canvas dimensions to the OBS browser source you embed.</li>
+                                <li>Use 30–60 FPS for smoother overlays without overwhelming viewers.</li>
+                                <li>Keep playback and pitch bounds between 0 and 1 to avoid distortion.</li>
+                                <li>Lower the minimum volume if alerts feel too loud on stream.</li>
+                            </ul>
+                        </section>
+
+                        <section class="settings-card info-card subtle">
+                            <p class="eyebrow subtle">Heads up</p>
+                            <h3>Global impact</h3>
+                            <p class="muted tiny">
+                                Changes here update every channel immediately. Save carefully and confirm with your
+                                team.
+                            </p>
+                        </section>
+                    </aside>
+                </div>
+            </main>
         </div>
-      </header>
-
-      <main class="settings-main">
-        <section class="settings-card settings-hero">
-          <div class="hero-copy">
-            <p class="eyebrow subtle">System administrator settings</p>
-            <h1>Application defaults</h1>
-            <p class="muted">
-              Configure overlay performance and audio guardrails for every channel using Imgfloat. These settings are
-              applied globally.
-            </p>
-            <div class="badge-row">
-              <span class="badge soft"><i class="fa-solid fa-gauge-high"></i> Performance tuned</span>
-              <span class="badge"><i class="fa-solid fa-cloud"></i> Server-wide</span>
-              <span class="badge subtle"><i class="fa-solid fa-gear"></i> Admin only</span>
-            </div>
-          </div>
-          <div class="stat-grid compact">
-            <div class="stat">
-              <p class="stat-label">Canvas FPS</p>
-              <p class="stat-value" id="stat-canvas-fps">--</p>
-              <p class="stat-subtitle">Longest side <span id="stat-canvas-size">--</span></p>
-            </div>
-            <div class="stat">
-              <p class="stat-label">Playback speed</p>
-              <p class="stat-value" id="stat-playback-range">--</p>
-              <p class="stat-subtitle">Applies to all animations</p>
-            </div>
-            <div class="stat">
-              <p class="stat-label">Audio pitch</p>
-              <p class="stat-value" id="stat-audio-range">--</p>
-              <p class="stat-subtitle">Fraction of original clip</p>
-            </div>
-            <div class="stat">
-              <p class="stat-label">Volume limits</p>
-              <p class="stat-value" id="stat-volume-range">--</p>
-              <p class="stat-subtitle">Keeps alerts comfortable</p>
-            </div>
-          </div>
-        </section>
-
-        <div class="settings-layout">
-          <section class="settings-card settings-panel">
-            <div class="section-heading">
-              <div>
-                <p class="eyebrow subtle">Overlay defaults</p>
-                <h2>Performance & audio budget</h2>
-                <p class="muted tiny">Tune the canvas and audio guardrails to keep overlays smooth and balanced.</p>
-              </div>
-            </div>
-
-            <form novalidate id="settings-form" class="settings-form">
-              <div class="form-section">
-                <div class="form-heading">
-                  <p class="eyebrow subtle">Canvas</p>
-                  <h3>Rendering budget</h3>
-                  <p class="muted tiny">
-                    Match FPS and max dimensions to your streaming canvas for consistent overlays.
-                  </p>
-                </div>
-                <div class="control-grid split-row">
-                  <label for="canvas-fps"
-                    >Canvas FPS
-                    <input
-                      id="canvas-fps"
-                      name="canvas-fps"
-                      class="text-input"
-                      type="text"
-                      inputmode="numeric"
-                      pattern="^[1-9]\d*$"
-                      placeholder="60"
-                    />
-                  </label>
-
-                  <label for="canvas-size"
-                    >Canvas max side length (pixels)
-                    <input
-                      id="canvas-size"
-                      name="canvas-size"
-                      class="text-input"
-                      type="text"
-                      inputmode="numeric"
-                      pattern="^[1-9]\d*$"
-                      placeholder="1920"
-                    />
-                  </label>
-                </div>
-                <p class="field-hint">Use the longest edge of your OBS browser source to prevent stretching.</p>
-              </div>
-
-              <div class="form-section">
-                <div class="form-heading">
-                  <p class="eyebrow subtle">Playback</p>
-                  <h3>Animation speed limits</h3>
-                  <p class="muted tiny">Bound default speeds between 0 and 1 so clips run predictably.</p>
-                </div>
-                <div class="control-grid split-row">
-                  <label for="min-playback-speed"
-                    >Min playback speed
-                    <input
-                      id="min-playback-speed"
-                      name="min-playback-speed"
-                      class="text-input"
-                      type="text"
-                      inputmode="decimal"
-                      pattern="^(0(\.\d+)?|1(\.0+)?)$"
-                      placeholder="0.5"
-                    />
-                  </label>
-
-                  <label for="max-playback-speed"
-                    >Max playback speed
-                    <input
-                      id="max-playback-speed"
-                      name="max-playback-speed"
-                      class="text-input"
-                      type="text"
-                      inputmode="decimal"
-                      pattern="^(0(\.\d+)?|1(\.0+)?)$"
-                      placeholder="1.0"
-                    />
-                  </label>
-                </div>
-                <p class="field-hint">
-                  Keep the maximum at 1.0 to avoid speeding overlays beyond their source frame rate.
-                </p>
-              </div>
-
-              <div class="form-section">
-                <div class="form-heading">
-                  <p class="eyebrow subtle">Audio</p>
-                  <h3>Pitch & volume guardrails</h3>
-                  <p class="muted tiny">Prevent harsh audio by bounding pitch and volume as fractions of the source.</p>
-                </div>
-                <div class="control-grid split-row">
-                  <label for="min-audio-pitch"
-                    >Min audio pitch
-                    <input
-                      id="min-audio-pitch"
-                      name="min-audio-pitch"
-                      class="text-input"
-                      type="text"
-                      inputmode="decimal"
-                      pattern="^(0(\.\d+)?|1(\.0+)?)$"
-                      placeholder="0.8"
-                    />
-                  </label>
-
-                  <label for="max-audio-pitch"
-                    >Max audio pitch
-                    <input
-                      id="max-audio-pitch"
-                      name="max-audio-pitch"
-                      class="text-input"
-                      type="text"
-                      inputmode="decimal"
-                      pattern="^(0(\.\d+)?|1(\.0+)?)$"
-                      placeholder="1.0"
-                    />
-                  </label>
-                </div>
-                <div class="control-grid split-row">
-                  <label for="min-volume"
-                    >Min volume
-                    <input
-                      id="min-volume"
-                      name="min-volume"
-                      class="text-input"
-                      type="text"
-                      inputmode="decimal"
-                      pattern="^(0(\.\d+)?|1(\.0+)?)$"
-                      placeholder="0.2"
-                    />
-                  </label>
-
-                  <label for="max-volume"
-                    >Max volume
-                    <input
-                      id="max-volume"
-                      name="max-volume"
-                      class="text-input"
-                      type="text"
-                      inputmode="decimal"
-                      pattern="^(0(\.\d+)?|1(\.0+)?)$"
-                      placeholder="1.0"
-                    />
-                  </label>
-                </div>
-                <p class="field-hint">Volume and pitch values are percentages of the original clip between 0 and 1.</p>
-              </div>
-
-              <div class="form-footer">
-                <p id="settings-status" class="status-chip">No changes yet.</p>
-                <button id="settings-submit-button" type="submit" class="button" disabled>Save settings</button>
-              </div>
-            </form>
-          </section>
-
-          <aside class="settings-sidebar">
-            <section class="settings-card info-card">
-              <p class="eyebrow subtle">Checklist</p>
-              <h3>Before you save</h3>
-              <ul class="hint-list">
-                <li>Match canvas dimensions to the OBS browser source you embed.</li>
-                <li>Use 30–60 FPS for smoother overlays without overwhelming viewers.</li>
-                <li>Keep playback and pitch bounds between 0 and 1 to avoid distortion.</li>
-                <li>Lower the minimum volume if alerts feel too loud on stream.</li>
-              </ul>
-            </section>
-
-            <section class="settings-card info-card subtle">
-              <p class="eyebrow subtle">Heads up</p>
-              <h3>Global impact</h3>
-              <p class="muted tiny">
-                Changes here update every channel immediately. Save carefully and confirm with your team.
-              </p>
-            </section>
-          </aside>
-        </div>
-      </main>
-    </div>
-    <script th:inline="javascript">
-      const serverRenderedSettings = /*[[${settingsJson}]]*/;
-    </script>
-    <script src="/js/cookie-consent.js"></script>
-    <script src="/js/settings.js"></script>
-    <script src="/js/toast.js"></script>
-  </body>
+        <script th:inline="javascript">
+            const serverRenderedSettings = /*[[${settingsJson}]]*/;
+        </script>
+        <script src="/js/cookie-consent.js"></script>
+        <script src="/js/settings.js"></script>
+        <script src="/js/toast.js"></script>
+    </body>
 </html>

src/test/java/dev/kruhlmann/imgfloat/ChannelApiIntegrationTest.java

@@ -1,35 +1,35 @@
 package dev.kruhlmann.imgfloat;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import dev.kruhlmann.imgfloat.model.VisibilityRequest;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.http.MediaType;
-import org.springframework.test.web.servlet.MockMvc;
-import org.springframework.mock.web.MockMultipartFile;
-
-import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-
-import javax.imageio.ImageIO;
-
 import static org.hamcrest.Matchers.hasSize;
 import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.oauth2Login;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
-@SpringBootTest(properties = {
+import com.fasterxml.jackson.databind.ObjectMapper;
+import dev.kruhlmann.imgfloat.model.VisibilityRequest;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import javax.imageio.ImageIO;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.test.web.servlet.MockMvc;
+
+@SpringBootTest(
+    properties = {
         "spring.security.oauth2.client.registration.twitch.client-id=test-client-id",
-        "spring.security.oauth2.client.registration.twitch.client-secret=test-client-secret"
-})
+        "spring.security.oauth2.client.registration.twitch.client-secret=test-client-secret",
+    }
+)
 @AutoConfigureMockMvc
 class ChannelApiIntegrationTest {
 
@@ -42,57 +42,92 @@ class ChannelApiIntegrationTest {
     @Test
     void broadcasterManagesAdminsAndAssets() throws Exception {
         String broadcaster = "caster";
-        mockMvc.perform(post("/api/channels/{broadcaster}/admins", broadcaster)
-                        .contentType(MediaType.APPLICATION_JSON)
-                        .content("{\"username\":\"helper\"}")
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk());
+        mockMvc
+            .perform(
+                post("/api/channels/{broadcaster}/admins", broadcaster)
+                    .contentType(MediaType.APPLICATION_JSON)
+                    .content("{\"username\":\"helper\"}")
+                    .with(oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster)))
+            )
+            .andExpect(status().isOk());
 
-        mockMvc.perform(get("/api/channels/{broadcaster}/admins", broadcaster)
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("$[0].login").value("helper"))
-                .andExpect(jsonPath("$[0].displayName").value("helper"));
+        mockMvc
+            .perform(
+                get("/api/channels/{broadcaster}/admins", broadcaster).with(
+                    oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster))
+                )
+            )
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$[0].login").value("helper"))
+            .andExpect(jsonPath("$[0].displayName").value("helper"));
 
         MockMultipartFile file = new MockMultipartFile("file", "image.png", "image/png", samplePng());
 
-        String assetId = objectMapper.readTree(mockMvc.perform(multipart("/api/channels/{broadcaster}/assets", broadcaster)
-                        .file(file)
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk())
-                .andReturn().getResponse().getContentAsString()).get("id").asText();
+        String assetId = objectMapper
+            .readTree(
+                mockMvc
+                    .perform(
+                        multipart("/api/channels/{broadcaster}/assets", broadcaster)
+                            .file(file)
+                            .with(oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster)))
+                    )
+                    .andExpect(status().isOk())
+                    .andReturn()
+                    .getResponse()
+                    .getContentAsString()
+            )
+            .get("id")
+            .asText();
 
-        mockMvc.perform(get("/api/channels/{broadcaster}/assets", broadcaster)
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("$", hasSize(1)));
+        mockMvc
+            .perform(
+                get("/api/channels/{broadcaster}/assets", broadcaster).with(
+                    oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster))
+                )
+            )
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$", hasSize(1)));
 
         VisibilityRequest visibilityRequest = new VisibilityRequest();
         visibilityRequest.setHidden(false);
-        mockMvc.perform(put("/api/channels/{broadcaster}/assets/{id}/visibility", broadcaster, assetId)
-                        .contentType(MediaType.APPLICATION_JSON)
-                        .content(objectMapper.writeValueAsString(visibilityRequest))
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("$.hidden").value(false));
+        mockMvc
+            .perform(
+                put("/api/channels/{broadcaster}/assets/{id}/visibility", broadcaster, assetId)
+                    .contentType(MediaType.APPLICATION_JSON)
+                    .content(objectMapper.writeValueAsString(visibilityRequest))
+                    .with(oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster)))
+            )
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.hidden").value(false));
 
-        mockMvc.perform(get("/api/channels/{broadcaster}/assets/visible", broadcaster)
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("$", hasSize(1)));
+        mockMvc
+            .perform(
+                get("/api/channels/{broadcaster}/assets/visible", broadcaster).with(
+                    oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster))
+                )
+            )
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$", hasSize(1)));
 
-        mockMvc.perform(delete("/api/channels/{broadcaster}/assets/{id}", broadcaster, assetId)
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", broadcaster))))
-                .andExpect(status().isOk());
+        mockMvc
+            .perform(
+                delete("/api/channels/{broadcaster}/assets/{id}", broadcaster, assetId).with(
+                    oauth2Login().attributes((attrs) -> attrs.put("preferred_username", broadcaster))
+                )
+            )
+            .andExpect(status().isOk());
     }
 
     @Test
     void rejectsAdminChangesFromNonBroadcaster() throws Exception {
-        mockMvc.perform(post("/api/channels/{broadcaster}/admins", "caster")
-                        .contentType(MediaType.APPLICATION_JSON)
-                        .content("{\"username\":\"helper\"}")
-                        .with(oauth2Login().attributes(attrs -> attrs.put("preferred_username", "intruder"))))
-                .andExpect(status().isForbidden());
+        mockMvc
+            .perform(
+                post("/api/channels/{broadcaster}/admins", "caster")
+                    .contentType(MediaType.APPLICATION_JSON)
+                    .content("{\"username\":\"helper\"}")
+                    .with(oauth2Login().attributes((attrs) -> attrs.put("preferred_username", "intruder")))
+            )
+            .andExpect(status().isForbidden());
     }
 
     private byte[] samplePng() throws IOException {

src/test/java/dev/kruhlmann/imgfloat/ChannelDirectoryApiIntegrationTest.java

@@ -1,5 +1,10 @@
 package dev.kruhlmann.imgfloat;
 
+import static org.hamcrest.Matchers.hasSize;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
 import dev.kruhlmann.imgfloat.model.Channel;
 import dev.kruhlmann.imgfloat.repository.ChannelRepository;
 import org.junit.jupiter.api.BeforeEach;
@@ -9,15 +14,12 @@ import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMock
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.web.servlet.MockMvc;
 
-import static org.hamcrest.Matchers.hasSize;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
-@SpringBootTest(properties = {
+@SpringBootTest(
+    properties = {
         "spring.security.oauth2.client.registration.twitch.client-id=test-client-id",
-        "spring.security.oauth2.client.registration.twitch.client-secret=test-client-secret"
-})
+        "spring.security.oauth2.client.registration.twitch.client-secret=test-client-secret",
+    }
+)
 @AutoConfigureMockMvc
 class ChannelDirectoryApiIntegrationTest {
 
@@ -38,10 +40,11 @@ class ChannelDirectoryApiIntegrationTest {
         channelRepository.save(new Channel("alpha"));
         channelRepository.save(new Channel("ALPINE"));
 
-        mockMvc.perform(get("/api/channels").param("q", "Al"))
-                .andExpect(status().isOk())
-                .andExpect(jsonPath("$", hasSize(2)))
-                .andExpect(jsonPath("$[0]").value("alpha"))
-                .andExpect(jsonPath("$[1]").value("alpine"));
+        mockMvc
+            .perform(get("/api/channels").param("q", "Al"))
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$", hasSize(2)))
+            .andExpect(jsonPath("$[0]").value("alpha"))
+            .andExpect(jsonPath("$[1]").value("alpine"));
     }
 }

src/test/java/dev/kruhlmann/imgfloat/ChannelDirectoryServiceTest.java

@@ -1,27 +1,28 @@
 package dev.kruhlmann.imgfloat;
 
-import dev.kruhlmann.imgfloat.model.TransformRequest;
-import dev.kruhlmann.imgfloat.model.VisibilityRequest;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
 import dev.kruhlmann.imgfloat.model.Asset;
 import dev.kruhlmann.imgfloat.model.AssetView;
 import dev.kruhlmann.imgfloat.model.Channel;
+import dev.kruhlmann.imgfloat.model.Settings;
+import dev.kruhlmann.imgfloat.model.TransformRequest;
+import dev.kruhlmann.imgfloat.model.VisibilityRequest;
 import dev.kruhlmann.imgfloat.repository.AssetRepository;
 import dev.kruhlmann.imgfloat.repository.ChannelRepository;
-import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
 import dev.kruhlmann.imgfloat.service.AssetStorageService;
+import dev.kruhlmann.imgfloat.service.ChannelDirectoryService;
+import dev.kruhlmann.imgfloat.service.SettingsService;
 import dev.kruhlmann.imgfloat.service.media.MediaDetectionService;
 import dev.kruhlmann.imgfloat.service.media.MediaOptimizationService;
 import dev.kruhlmann.imgfloat.service.media.MediaPreviewService;
-import dev.kruhlmann.imgfloat.service.SettingsService;
-import dev.kruhlmann.imgfloat.model.Settings;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import org.mockito.ArgumentCaptor;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-import org.springframework.mock.web.MockMultipartFile;
-import org.springframework.test.util.ReflectionTestUtils;
-import org.springframework.web.server.ResponseStatusException;
-
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
@@ -33,19 +34,17 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
-
 import javax.imageio.ImageIO;
-
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatThrownBy;
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.anyString;
-import static org.mockito.Mockito.doAnswer;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-import static org.mockito.Mockito.verify;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
+import org.springframework.messaging.simp.SimpMessagingTemplate;
+import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.test.util.ReflectionTestUtils;
+import org.springframework.web.server.ResponseStatusException;
 
 class ChannelDirectoryServiceTest {
+
     private ChannelDirectoryService service;
     private SimpMessagingTemplate messagingTemplate;
     private ChannelRepository channelRepository;
@@ -66,8 +65,15 @@ class ChannelDirectoryServiceTest {
         MediaPreviewService mediaPreviewService = new MediaPreviewService();
         MediaOptimizationService mediaOptimizationService = new MediaOptimizationService(mediaPreviewService);
         MediaDetectionService mediaDetectionService = new MediaDetectionService();
-        service = new ChannelDirectoryService(channelRepository, assetRepository, messagingTemplate,
-                assetStorageService, mediaDetectionService, mediaOptimizationService, settingsService);
+        service = new ChannelDirectoryService(
+            channelRepository,
+            assetRepository,
+            messagingTemplate,
+            assetStorageService,
+            mediaDetectionService,
+            mediaOptimizationService,
+            settingsService
+        );
         ReflectionTestUtils.setField(service, "uploadLimitBytes", 5_000_000L);
     }
 
@@ -78,7 +84,10 @@ class ChannelDirectoryServiceTest {
         Optional<AssetView> created = service.createAsset("caster", file);
         assertThat(created).isPresent();
         ArgumentCaptor<Object> captor = ArgumentCaptor.forClass(Object.class);
-        verify(messagingTemplate).convertAndSend(org.mockito.ArgumentMatchers.contains("/topic/channel/caster"), captor.capture());
+        verify(messagingTemplate).convertAndSend(
+            org.mockito.ArgumentMatchers.contains("/topic/channel/caster"),
+            captor.capture()
+        );
     }
 
     @Test
@@ -105,8 +114,8 @@ class ChannelDirectoryServiceTest {
         transform.setWidth(0);
 
         assertThatThrownBy(() -> service.updateTransform(channel, id, transform))
-                .isInstanceOf(ResponseStatusException.class)
-                .hasMessageContaining("Canvas width out of range");
+            .isInstanceOf(ResponseStatusException.class)
+            .hasMessageContaining("Canvas width out of range");
     }
 
     @Test
@@ -118,15 +127,15 @@ class ChannelDirectoryServiceTest {
         speedTransform.setSpeed(5.0);
 
         assertThatThrownBy(() -> service.updateTransform(channel, id, speedTransform))
-                .isInstanceOf(ResponseStatusException.class)
-                .hasMessageContaining("Speed out of range");
+            .isInstanceOf(ResponseStatusException.class)
+            .hasMessageContaining("Speed out of range");
 
         TransformRequest volumeTransform = validTransform();
         volumeTransform.setAudioVolume(6.5);
 
         assertThatThrownBy(() -> service.updateTransform(channel, id, volumeTransform))
-                .isInstanceOf(ResponseStatusException.class)
-                .hasMessageContaining("Audio volume out of range");
+            .isInstanceOf(ResponseStatusException.class)
+            .hasMessageContaining("Audio volume out of range");
     }
 
     @Test
@@ -178,44 +187,56 @@ class ChannelDirectoryServiceTest {
         Map<String, Channel> channels = new ConcurrentHashMap<>();
         Map<String, Asset> assets = new ConcurrentHashMap<>();
 
-        when(channelRepository.findById(anyString()))
-                .thenAnswer(invocation -> Optional.ofNullable(channels.get(invocation.getArgument(0))));
-        when(channelRepository.save(any(Channel.class)))
-                .thenAnswer(invocation -> {
-                    Channel channel = invocation.getArgument(0);
-                    channels.put(channel.getBroadcaster(), channel);
-                    return channel;
-                });
-        when(channelRepository.findAll())
-                .thenAnswer(invocation -> List.copyOf(channels.values()));
-        when(channelRepository.findTop50ByBroadcasterContainingIgnoreCaseOrderByBroadcasterAsc(anyString()))
-                .thenAnswer(invocation -> channels.values().stream()
-                        .filter(channel -> Optional.ofNullable(channel.getBroadcaster()).orElse("")
-                                .contains(Optional.ofNullable(invocation.getArgument(0, String.class)).orElse("").toLowerCase()))
-                        .sorted(Comparator.comparing(Channel::getBroadcaster))
-                        .limit(50)
-                        .toList());
+        when(channelRepository.findById(anyString())).thenAnswer((invocation) ->
+            Optional.ofNullable(channels.get(invocation.getArgument(0)))
+        );
+        when(channelRepository.save(any(Channel.class))).thenAnswer((invocation) -> {
+            Channel channel = invocation.getArgument(0);
+            channels.put(channel.getBroadcaster(), channel);
+            return channel;
+        });
+        when(channelRepository.findAll()).thenAnswer((invocation) -> List.copyOf(channels.values()));
+        when(channelRepository.findTop50ByBroadcasterContainingIgnoreCaseOrderByBroadcasterAsc(anyString())).thenAnswer(
+            (invocation) ->
+                channels
+                    .values()
+                    .stream()
+                    .filter((channel) ->
+                        Optional.ofNullable(channel.getBroadcaster())
+                            .orElse("")
+                            .contains(
+                                Optional.ofNullable(invocation.getArgument(0, String.class)).orElse("").toLowerCase()
+                            )
+                    )
+                    .sorted(Comparator.comparing(Channel::getBroadcaster))
+                    .limit(50)
+                    .toList()
+        );
 
-        when(assetRepository.save(any(Asset.class)))
-                .thenAnswer(invocation -> {
-                    Asset asset = invocation.getArgument(0);
-                    assets.put(asset.getId(), asset);
-                    return asset;
-                });
-        when(assetRepository.findById(anyString()))
-                .thenAnswer(invocation -> Optional.ofNullable(assets.get(invocation.getArgument(0))));
-        when(assetRepository.findByBroadcaster(anyString()))
-                .thenAnswer(invocation -> filterAssetsByBroadcaster(assets.values(), invocation.getArgument(0), false));
-        when(assetRepository.findByBroadcasterAndHiddenFalse(anyString()))
-                .thenAnswer(invocation -> filterAssetsByBroadcaster(assets.values(), invocation.getArgument(0), true));
-        doAnswer(invocation -> assets.remove(invocation.getArgument(0, Asset.class).getId()))
-                .when(assetRepository).delete(any(Asset.class));
+        when(assetRepository.save(any(Asset.class))).thenAnswer((invocation) -> {
+            Asset asset = invocation.getArgument(0);
+            assets.put(asset.getId(), asset);
+            return asset;
+        });
+        when(assetRepository.findById(anyString())).thenAnswer((invocation) ->
+            Optional.ofNullable(assets.get(invocation.getArgument(0)))
+        );
+        when(assetRepository.findByBroadcaster(anyString())).thenAnswer((invocation) ->
+            filterAssetsByBroadcaster(assets.values(), invocation.getArgument(0), false)
+        );
+        when(assetRepository.findByBroadcasterAndHiddenFalse(anyString())).thenAnswer((invocation) ->
+            filterAssetsByBroadcaster(assets.values(), invocation.getArgument(0), true)
+        );
+        doAnswer((invocation) -> assets.remove(invocation.getArgument(0, Asset.class).getId()))
+            .when(assetRepository)
+            .delete(any(Asset.class));
     }
 
     private List<Asset> filterAssetsByBroadcaster(Collection<Asset> assets, String broadcaster, boolean onlyVisible) {
-        return assets.stream()
-                .filter(asset -> asset.getBroadcaster().equalsIgnoreCase(broadcaster))
-                .filter(asset -> !onlyVisible || !asset.isHidden())
-                .toList();
+        return assets
+            .stream()
+            .filter((asset) -> asset.getBroadcaster().equalsIgnoreCase(broadcaster))
+            .filter((asset) -> !onlyVisible || !asset.isHidden())
+            .toList();
     }
 }

src/test/java/dev/kruhlmann/imgfloat/config/TwitchAuthorizationCodeGrantRequestEntityConverterTest.java

@@ -1,5 +1,7 @@
 package dev.kruhlmann.imgfloat.config;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 import org.junit.jupiter.api.Test;
 import org.springframework.http.RequestEntity;
 import org.springframework.security.oauth2.client.endpoint.OAuth2AuthorizationCodeGrantRequest;
@@ -12,39 +14,43 @@ import org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationResp
 import org.springframework.security.oauth2.core.endpoint.OAuth2ParameterNames;
 import org.springframework.util.MultiValueMap;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
 class TwitchAuthorizationCodeGrantRequestEntityConverterTest {
 
     @Test
     void addsClientIdAndSecretToTokenRequestBody() {
         ClientRegistration registration = ClientRegistration.withRegistrationId("twitch")
-                .clientId("twitch-id")
-                .clientSecret("twitch-secret")
-                .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
-                .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
-                .redirectUri("https://example.com/redirect")
-                .scope("user:read:email")
-                .authorizationUri("https://id.twitch.tv/oauth2/authorize")
-                .tokenUri("https://id.twitch.tv/oauth2/token")
-                .userInfoUri("https://api.twitch.tv/helix/users")
-                .userNameAttributeName("preferred_username")
-                .build();
+            .clientId("twitch-id")
+            .clientSecret("twitch-secret")
+            .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
+            .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
+            .redirectUri("https://example.com/redirect")
+            .scope("user:read:email")
+            .authorizationUri("https://id.twitch.tv/oauth2/authorize")
+            .tokenUri("https://id.twitch.tv/oauth2/token")
+            .userInfoUri("https://api.twitch.tv/helix/users")
+            .userNameAttributeName("preferred_username")
+            .build();
 
         OAuth2AuthorizationRequest authorizationRequest = OAuth2AuthorizationRequest.authorizationCode()
-                .authorizationUri(registration.getProviderDetails().getAuthorizationUri())
-                .clientId(registration.getClientId())
-                .redirectUri(registration.getRedirectUri())
-                .state("state")
-                .build();
+            .authorizationUri(registration.getProviderDetails().getAuthorizationUri())
+            .clientId(registration.getClientId())
+            .redirectUri(registration.getRedirectUri())
+            .state("state")
+            .build();
 
         OAuth2AuthorizationResponse authorizationResponse = OAuth2AuthorizationResponse.success("code")
-                .redirectUri(registration.getRedirectUri())
-                .state("state")
-                .build();
+            .redirectUri(registration.getRedirectUri())
+            .state("state")
+            .build();
 
-        OAuth2AuthorizationExchange exchange = new OAuth2AuthorizationExchange(authorizationRequest, authorizationResponse);
-        OAuth2AuthorizationCodeGrantRequest grantRequest = new OAuth2AuthorizationCodeGrantRequest(registration, exchange);
+        OAuth2AuthorizationExchange exchange = new OAuth2AuthorizationExchange(
+            authorizationRequest,
+            authorizationResponse
+        );
+        OAuth2AuthorizationCodeGrantRequest grantRequest = new OAuth2AuthorizationCodeGrantRequest(
+            registration,
+            exchange
+        );
 
         var converter = new TwitchAuthorizationCodeGrantRequestEntityConverter();
         RequestEntity<?> requestEntity = converter.convert(grantRequest);

src/test/java/dev/kruhlmann/imgfloat/config/TwitchOAuth2ErrorResponseErrorHandlerTest.java

@@ -1,7 +1,11 @@
 package dev.kruhlmann.imgfloat.config;
 
-import java.net.URI;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.springframework.test.web.client.match.MockRestRequestMatchers.requestTo;
+import static org.springframework.test.web.client.response.MockRestResponseCreators.withSuccess;
 
+import java.net.URI;
 import org.junit.jupiter.api.Test;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -13,11 +17,6 @@ import org.springframework.security.oauth2.core.endpoint.OAuth2AccessTokenRespon
 import org.springframework.test.web.client.MockRestServiceServer;
 import org.springframework.web.client.RestTemplate;
 
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-import static org.springframework.test.web.client.match.MockRestRequestMatchers.requestTo;
-import static org.springframework.test.web.client.response.MockRestResponseCreators.withSuccess;
-
 class TwitchOAuth2ErrorResponseErrorHandlerTest {
 
     private final TwitchOAuth2ErrorResponseErrorHandler handler = new TwitchOAuth2ErrorResponseErrorHandler();
@@ -27,12 +26,12 @@ class TwitchOAuth2ErrorResponseErrorHandlerTest {
         MockClientHttpResponse response = new MockClientHttpResponse(new byte[0], HttpStatus.BAD_REQUEST);
         response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
 
-        OAuth2AuthorizationException exception = assertThrows(OAuth2AuthorizationException.class,
-                () -> handler.handleError(response));
+        OAuth2AuthorizationException exception = assertThrows(OAuth2AuthorizationException.class, () ->
+            handler.handleError(response)
+        );
 
         assertThat(exception.getError().getErrorCode()).isEqualTo("invalid_token_response");
-        assertThat(exception.getError().getDescription())
-                .contains("Failed to parse Twitch OAuth error response");
+        assertThat(exception.getError().getDescription()).contains("Failed to parse Twitch OAuth error response");
     }
 
     @Test
@@ -41,13 +40,20 @@ class TwitchOAuth2ErrorResponseErrorHandlerTest {
         restTemplate.setErrorHandler(new TwitchOAuth2ErrorResponseErrorHandler());
         MockRestServiceServer server = MockRestServiceServer.bindTo(restTemplate).build();
 
-        server.expect(requestTo("https://id.twitch.tv/oauth2/token"))
-                .andRespond(withSuccess(
-                        "{\"access_token\":\"abc\",\"token_type\":\"bearer\",\"expires_in\":3600,\"scope\":[]}",
-                        MediaType.APPLICATION_JSON));
+        server
+            .expect(requestTo("https://id.twitch.tv/oauth2/token"))
+            .andRespond(
+                withSuccess(
+                    "{\"access_token\":\"abc\",\"token_type\":\"bearer\",\"expires_in\":3600,\"scope\":[]}",
+                    MediaType.APPLICATION_JSON
+                )
+            );
 
         RequestEntity<Void> request = RequestEntity.post(URI.create("https://id.twitch.tv/oauth2/token")).build();
-        ResponseEntity<OAuth2AccessTokenResponse> response = restTemplate.exchange(request, OAuth2AccessTokenResponse.class);
+        ResponseEntity<OAuth2AccessTokenResponse> response = restTemplate.exchange(
+            request,
+            OAuth2AccessTokenResponse.class
+        );
 
         assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
         assertThat(response.getBody()).isNotNull();

src/test/java/dev/kruhlmann/imgfloat/config/TwitchOAuth2UserServiceTest.java

@@ -8,7 +8,6 @@ import static org.springframework.test.web.client.response.MockRestResponseCreat
 
 import java.time.Instant;
 import java.util.Set;
-
 import org.junit.jupiter.api.Test;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.MediaType;
@@ -26,51 +25,54 @@ class TwitchOAuth2UserServiceTest {
     @Test
     void unwrapsTwitchUserAndAddsClientIdHeaderToUserInfoRequest() {
         ClientRegistration registration = twitchRegistrationBuilder()
-                .clientId("client-123")
-                .clientSecret("secret")
-                .build();
+            .clientId("client-123")
+            .clientSecret("secret")
+            .build();
 
         OAuth2UserRequest userRequest = userRequest(registration);
         RestTemplate restTemplate = TwitchOAuth2UserService.createRestTemplate(userRequest);
         MockRestServiceServer server = MockRestServiceServer.bindTo(restTemplate).build();
 
-        TwitchOAuth2UserService service = new TwitchOAuth2UserService(ignored -> restTemplate);
+        TwitchOAuth2UserService service = new TwitchOAuth2UserService((ignored) -> restTemplate);
 
-        server.expect(requestTo("https://api.twitch.tv/helix/users"))
-                .andExpect(method(HttpMethod.GET))
-                .andExpect(header("Client-ID", "client-123"))
-                .andRespond(withSuccess(
-                        "{\"data\":[{\"id\":\"42\",\"login\":\"demo\",\"display_name\":\"Demo\"}]}",
-                        MediaType.APPLICATION_JSON));
+        server
+            .expect(requestTo("https://api.twitch.tv/helix/users"))
+            .andExpect(method(HttpMethod.GET))
+            .andExpect(header("Client-ID", "client-123"))
+            .andRespond(
+                withSuccess(
+                    "{\"data\":[{\"id\":\"42\",\"login\":\"demo\",\"display_name\":\"Demo\"}]}",
+                    MediaType.APPLICATION_JSON
+                )
+            );
 
         OAuth2User user = service.loadUser(userRequest);
 
         assertThat(user.getName()).isEqualTo("demo");
-        assertThat(user.getAttributes())
-                .containsEntry("id", "42")
-                .containsEntry("display_name", "Demo");
+        assertThat(user.getAttributes()).containsEntry("id", "42").containsEntry("display_name", "Demo");
         server.verify();
     }
 
     private OAuth2UserRequest userRequest(ClientRegistration registration) {
         OAuth2AccessToken accessToken = new OAuth2AccessToken(
-                OAuth2AccessToken.TokenType.BEARER,
-                "token",
-                Instant.now(),
-                Instant.now().plusSeconds(60),
-                Set.of("user:read:email"));
+            OAuth2AccessToken.TokenType.BEARER,
+            "token",
+            Instant.now(),
+            Instant.now().plusSeconds(60),
+            Set.of("user:read:email")
+        );
         return new OAuth2UserRequest(registration, accessToken);
     }
 
     private ClientRegistration.Builder twitchRegistrationBuilder() {
         return ClientRegistration.withRegistrationId("twitch")
-                .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
-                .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
-                .clientName("Twitch")
-                .redirectUri("https://example.com/login/oauth2/code/twitch")
-                .authorizationUri("https://id.twitch.tv/oauth2/authorize")
-                .tokenUri("https://id.twitch.tv/oauth2/token")
-                .userInfoUri("https://api.twitch.tv/helix/users")
-                .userNameAttributeName("login");
+            .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
+            .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
+            .clientName("Twitch")
+            .redirectUri("https://example.com/login/oauth2/code/twitch")
+            .authorizationUri("https://id.twitch.tv/oauth2/authorize")
+            .tokenUri("https://id.twitch.tv/oauth2/token")
+            .userInfoUri("https://api.twitch.tv/helix/users")
+            .userNameAttributeName("login");
     }
 }

src/test/java/dev/kruhlmann/imgfloat/service/AssetStorageServiceTest.java

@@ -1,18 +1,18 @@
 package dev.kruhlmann.imgfloat.service;
 
-import dev.kruhlmann.imgfloat.service.media.AssetContent;
-import dev.kruhlmann.imgfloat.model.Asset;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
+import dev.kruhlmann.imgfloat.model.Asset;
+import dev.kruhlmann.imgfloat.service.media.AssetContent;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
 class AssetStorageServiceTest {
+
     private AssetStorageService service;
     private Path assets;
     private Path previews;
@@ -27,13 +27,13 @@ class AssetStorageServiceTest {
     @Test
     void refusesToStoreEmptyAsset() {
         assertThatThrownBy(() -> service.storeAsset("caster", "id", new byte[0], "image/png"))
-                .isInstanceOf(IOException.class)
-                .hasMessageContaining("empty");
+            .isInstanceOf(IOException.class)
+            .hasMessageContaining("empty");
     }
 
     @Test
     void storesAndLoadsAssets() throws IOException {
-        byte[] bytes = new byte[]{1, 2, 3};
+        byte[] bytes = new byte[] { 1, 2, 3 };
         Asset asset = new Asset("caster", "asset", "http://example.com", 10, 10);
         asset.setMediaType("image/png");
 
@@ -53,7 +53,7 @@ class AssetStorageServiceTest {
 
     @Test
     void storesAndLoadsPreviews() throws IOException {
-        byte[] preview = new byte[]{9, 8, 7};
+        byte[] preview = new byte[] { 9, 8, 7 };
         Asset asset = new Asset("caster", "asset", "http://example.com", 10, 10);
         asset.setMediaType("image/png");
 

src/test/java/dev/kruhlmann/imgfloat/service/media/MediaDetectionServiceTest.java

@@ -1,18 +1,18 @@
 package dev.kruhlmann.imgfloat.service.media;
 
-import org.junit.jupiter.api.Test;
-import org.springframework.mock.web.MockMultipartFile;
-
-import java.io.IOException;
-
 import static org.assertj.core.api.Assertions.assertThat;
 
+import java.io.IOException;
+import org.junit.jupiter.api.Test;
+import org.springframework.mock.web.MockMultipartFile;
+
 class MediaDetectionServiceTest {
+
     private final MediaDetectionService service = new MediaDetectionService();
 
     @Test
     void acceptsMagicBytesOverDeclaredType() throws IOException {
-        byte[] png = new byte[]{(byte) 0x89, 0x50, 0x4E, 0x47};
+        byte[] png = new byte[] { (byte) 0x89, 0x50, 0x4E, 0x47 };
         MockMultipartFile file = new MockMultipartFile("file", "image.png", "text/plain", png);
 
         assertThat(service.detectAllowedMediaType(file, file.getBytes())).contains("image/png");
@@ -20,14 +20,14 @@ class MediaDetectionServiceTest {
 
     @Test
     void fallsBackToFilenameAllowlist() throws IOException {
-        MockMultipartFile file = new MockMultipartFile("file", "picture.png", null, new byte[]{1, 2, 3});
+        MockMultipartFile file = new MockMultipartFile("file", "picture.png", null, new byte[] { 1, 2, 3 });
 
         assertThat(service.detectAllowedMediaType(file, file.getBytes())).contains("image/png");
     }
 
     @Test
     void rejectsUnknownTypes() throws IOException {
-        MockMultipartFile file = new MockMultipartFile("file", "unknown.bin", null, new byte[]{1, 2, 3});
+        MockMultipartFile file = new MockMultipartFile("file", "unknown.bin", null, new byte[] { 1, 2, 3 });
 
         assertThat(service.detectAllowedMediaType(file, file.getBytes())).isEmpty();
     }

src/test/java/dev/kruhlmann/imgfloat/service/media/MediaOptimizationServiceTest.java

@@ -1,16 +1,16 @@
 package dev.kruhlmann.imgfloat.service.media;
 
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-
-import javax.imageio.ImageIO;
-import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-
 import static org.assertj.core.api.Assertions.assertThat;
 
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import javax.imageio.ImageIO;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
 class MediaOptimizationServiceTest {
+
     private MediaOptimizationService service;
 
     @BeforeEach
@@ -38,7 +38,7 @@ class MediaOptimizationServiceTest {
 
     @Test
     void returnsNullForUnsupportedBytes() throws IOException {
-        OptimizedAsset optimized = service.optimizeAsset(new byte[]{1, 2, 3}, "application/octet-stream");
+        OptimizedAsset optimized = service.optimizeAsset(new byte[] { 1, 2, 3 }, "application/octet-stream");
 
         assertThat(optimized).isNull();
     }