Adding ability to hide / show courses

templates/lesson_view.html

@@ -452,13 +452,15 @@
             }
 
             function saveProgress(progressSeconds, completed = false) {
+                const duration = activeMedia && isFinite(activeMedia.duration) ? Math.floor(activeMedia.duration) : null;
                 fetch('/api/progress', {
                     method: 'POST',
                     headers: {'Content-Type': 'application/json'},
                     body: JSON.stringify({
                         lesson_path: '{{ lesson_path }}',
                         completed: completed,
-                        progress_seconds: Math.floor(progressSeconds)
+                        progress_seconds: Math.floor(progressSeconds),
+                        duration_seconds: duration
                     })
                 }).catch(err => console.error('Failed to save progress:', err));
             }