Custom video player

resources/js/player/player-engagement.js

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+// Engagement heatmap tracking
+// Samples the user's current time while playing and sends batched segment data to the server.
+// Only tracks segment >= 1 (excludes 0-10s).
+// Only calls the endpoint when the user is logged in.
+
+let engagementInterval;
+let engagementSegments = new Set();
+let engagementReportInterval;
+const SEGMENT_DURATION = 10; // seconds per segment
+const SAMPLE_INTERVAL = 5000; // sample every 5s
+const REPORT_INTERVAL = 15000; // send batch every 15s
+
+function isAuthenticated() {
+    const el = document.getElementById('auth_check');
+    return el && el.value === '1';
+}
+
+function sendEngagement(episodeId, segments) {
+    if (!isAuthenticated()) return;
+
+    window.axios.post('/player/engagement', {
+        episode_id: episodeId,
+        segments: segments,
+    }).catch(() => {
+        // Fire-and-forget: silently ignore network errors
+    });
+}
+
+export function startEngagementTracking(episodeId) {
+    engagementSegments.clear();
+
+    // Sample current time while playing
+    engagementInterval = setInterval(() => {
+        const video = document.querySelector('video');
+        if (!video || video.paused) return;
+
+        const segment = Math.floor(video.currentTime / SEGMENT_DURATION);
+        // Skip segment 0 (0-10s) — no need to track the very start
+        if (segment >= 1) {
+            engagementSegments.add(segment);
+        }
+    }, SAMPLE_INTERVAL);
+
+    // Batch report to server
+    engagementReportInterval = setInterval(() => {
+        if (engagementSegments.size === 0) return;
+
+        const segments = Array.from(engagementSegments);
+        engagementSegments.clear();
+
+        sendEngagement(episodeId, segments);
+    }, REPORT_INTERVAL);
+
+    // Flush remaining segments & cleanup on page unload
+    const cleanup = () => {
+        clearInterval(engagementInterval);
+        clearInterval(engagementReportInterval);
+
+        if (engagementSegments.size > 0) {
+            const segments = Array.from(engagementSegments);
+            engagementSegments.clear();
+            sendEngagement(episodeId, segments);
+        }
+    };
+
+    window.addEventListener('beforeunload', cleanup);
+}
+
+export function stopEngagementTracking() {
+    if (engagementInterval) clearInterval(engagementInterval);
+    if (engagementReportInterval) clearInterval(engagementReportInterval);
+}