cache versions

src/server.ts

@@ -69,6 +69,19 @@ if (!fs.existsSync(downloadsDir)) {
     fs.mkdirSync(downloadsDir, { recursive: true });
 }
 
+// Load version for cache busting
+let appVersion = Date.now().toString();
+try {
+    const versionPath = path.join(__dirname, '../public/version.json');
+    if (fs.existsSync(versionPath)) {
+        const versionData = JSON.parse(fs.readFileSync(versionPath, 'utf8'));
+        appVersion = versionData.version || appVersion;
+        logger.info(`App version loaded: ${appVersion}`);
+    }
+} catch (error) {
+    logger.warn('Could not load version file, using timestamp');
+}
+
 // Routes
 app.get('/', (req: Request, res: Response) => {
     // Use minified HTML in production
@@ -76,12 +89,23 @@ app.get('/', (req: Request, res: Response) => {
     const htmlFile = isProduction ? 'index.min.html' : 'index.html';
     const indexPath = path.join(__dirname, '../public', htmlFile);
     
-    // Set cache headers for HTML (short cache)
+    // Set cache headers for HTML (no cache for HTML itself)
     res.set({
-        'Cache-Control': 'public, max-age=3600, must-revalidate', // 1 hour, revalidate
+        'Cache-Control': 'no-cache, no-store, must-revalidate',
+        'Pragma': 'no-cache',
+        'Expires': '0'
     });
     
-    res.sendFile(indexPath);
+    // Read HTML and inject version
+    try {
+        let html = fs.readFileSync(indexPath, 'utf8');
+        // Replace version placeholders with actual version
+        html = html.replace(/\?v=\d+/g, `?v=${appVersion}`);
+        res.send(html);
+    } catch (error) {
+        logger.error('Error serving HTML:', error);
+        res.sendFile(indexPath);
+    }
 });
 
 // Search videos
@@ -288,6 +312,22 @@ app.get('/health', (req: Request, res: Response) => {
     res.json({ status: 'ok', timestamp: new Date().toISOString() });
 });
 
+// Version endpoint for client-side cache busting
+app.get('/api/version', (req: Request, res: Response) => {
+    res.set('Cache-Control', 'no-cache, no-store, must-revalidate');
+    try {
+        const versionPath = path.join(__dirname, '../public/version.json');
+        if (fs.existsSync(versionPath)) {
+            const versionData = fs.readFileSync(versionPath, 'utf8');
+            res.json(JSON.parse(versionData));
+        } else {
+            res.json({ version: appVersion, timestamp: Date.now() });
+        }
+    } catch (error) {
+        res.json({ version: appVersion, timestamp: Date.now() });
+    }
+});
+
 // Error handler
 app.use((err: Error, _req: Request, res: Response, _next: any) => {
     logger.error(err.stack || err.message);