Add download

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

@@ -0,0 +1,40 @@
+function detectPlatform() {
+    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;
+}
+
+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);
+        }
+    });
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+    const downloadSections = document.querySelectorAll('.download-section, .download-card-block');
+    downloadSections.forEach(markRecommendedDownload);
+});