CourseHub: AJAX video course player (PHP + MySQL + Bootstrap + Plyr)

Scans nested course folders for mp4s, tracks per-user resume position and per-folder progress. SPA frontend with hash routing over a JSON API; range-request streaming via stream.php.
2026-07-11 10:25:35 -04:00
commit 3ae6c1ae2e
16 changed files with 1328 additions and 0 deletions
@@ -0,0 +1,64 @@
+<?php
+// GET  api/progress.php?video_id=N       -> saved progress for this user/video
+// POST api/progress.php                  -> save progress
+//      JSON body: {video_id, position, duration}
+//      (also accepts form-encoded fields; used by navigator.sendBeacon)
+require_once __DIR__ . '/../includes/auth.php';
+require_once __DIR__ . '/../includes/functions.php';
+
+header('Content-Type: application/json');
+$userId = requireLoginApi();
+
+if ($_SERVER['REQUEST_METHOD'] === 'GET') {
+    $videoId = (int)($_GET['video_id'] ?? 0);
+    $stmt = db()->prepare(
+        'SELECT position_seconds, duration_seconds, completed
+         FROM video_progress WHERE user_id = ? AND video_id = ?'
+    );
+    $stmt->execute([$userId, $videoId]);
+    echo json_encode($stmt->fetch() ?: ['position_seconds' => 0, 'duration_seconds' => null, 'completed' => 0]);
+    exit;
+}
+
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    http_response_code(405);
+    echo json_encode(['error' => 'Method not allowed']);
+    exit;
+}
+
+$raw  = file_get_contents('php://input');
+$data = json_decode($raw, true);
+if (!is_array($data)) {
+    parse_str($raw, $data);          // sendBeacon posts form-encoded
+}
+
+$videoId  = (int)($data['video_id'] ?? 0);
+$position = max(0, (float)($data['position'] ?? 0));
+$duration = (float)($data['duration'] ?? 0);
+
+if ($videoId <= 0 || !getVideo($videoId)) {
+    http_response_code(400);
+    echo json_encode(['error' => 'Unknown video']);
+    exit;
+}
+
+$completed = ($duration > 0 && $position / $duration >= COMPLETE_THRESHOLD) ? 1 : 0;
+
+$db = db();
+$stmt = $db->prepare(
+    'INSERT INTO video_progress (user_id, video_id, position_seconds, duration_seconds, completed)
+     VALUES (?, ?, ?, ?, ?)
+     ON DUPLICATE KEY UPDATE
+        position_seconds = VALUES(position_seconds),
+        duration_seconds = VALUES(duration_seconds),
+        completed = GREATEST(completed, VALUES(completed))' // once complete, stays complete
+);
+$stmt->execute([$userId, $videoId, $position, $duration > 0 ? $duration : null, $completed]);
+
+// Cache the duration on the video row so listings can show it without ffprobe.
+if ($duration > 0) {
+    $db->prepare('UPDATE videos SET duration_seconds = ? WHERE id = ? AND duration_seconds IS NULL')
+       ->execute([$duration, $videoId]);
+}
+
+echo json_encode(['ok' => true, 'completed' => (bool)$completed]);