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.
This commit is contained in:
Harwinder Sekhon
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<?php
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// GET api/auth.php -> {logged_in, username}
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// POST api/auth.php {action, username?, password?}
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// action: login | register | logout
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require_once __DIR__ . '/../includes/auth.php';
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header('Content-Type: application/json');
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if ($_SERVER['REQUEST_METHOD'] === 'GET') {
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echo json_encode([
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'logged_in' => currentUserId() !== null,
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'username' => currentUsername(),
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'allow_registration' => ALLOW_REGISTRATION,
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]);
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exit;
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}
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if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
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http_response_code(405);
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echo json_encode(['error' => 'Method not allowed']);
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exit;
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}
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$data = json_decode(file_get_contents('php://input'), true) ?: [];
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$action = $data['action'] ?? '';
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$username = trim($data['username'] ?? '');
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$password = $data['password'] ?? '';
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switch ($action) {
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case 'login':
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if (attemptLogin($username, $password)) {
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echo json_encode(['ok' => true, 'username' => currentUsername()]);
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} else {
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http_response_code(401);
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echo json_encode(['error' => 'Invalid username or password.']);
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}
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break;
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case 'register':
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if (!ALLOW_REGISTRATION) {
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http_response_code(403);
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echo json_encode(['error' => 'Registration is disabled.']);
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break;
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}
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$result = registerUser($username, $password);
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if ($result === true) {
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attemptLogin($username, $password);
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echo json_encode(['ok' => true, 'username' => currentUsername()]);
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} else {
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http_response_code(422);
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echo json_encode(['error' => $result]);
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}
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break;
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case 'logout':
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$_SESSION = [];
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session_destroy();
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echo json_encode(['ok' => true]);
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break;
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default:
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http_response_code(400);
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echo json_encode(['error' => 'Unknown action']);
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}
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+119
@@ -0,0 +1,119 @@
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<?php
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// GET api/library.php?view=home -> courses + continue-watching
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// GET api/library.php?view=folder&id=N -> folder contents + progress
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// GET api/library.php?view=video&id=N -> video + playlist + resume info
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require_once __DIR__ . '/../includes/auth.php';
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require_once __DIR__ . '/../includes/functions.php';
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header('Content-Type: application/json');
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$userId = requireLoginApi();
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function folderSummary(array $f, int $userId): array
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{
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return [
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'id' => (int)$f['id'],
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'name' => $f['name'],
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'progress' => folderProgress($userId, $f['path']),
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];
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}
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function videoSummary(array $v): array
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{
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$duration = $v['duration_seconds'] ?? $v['watched_duration'] ?? null;
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$position = (float)($v['position_seconds'] ?? 0);
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return [
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'id' => (int)$v['id'],
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'name' => $v['name'],
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'duration' => $duration !== null ? (float)$duration : null,
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'position' => $position,
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'completed' => (bool)($v['completed'] ?? false),
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'percent' => ($duration ?? 0) > 0 ? min(100, (int)round(100 * $position / $duration)) : 0,
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];
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}
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function crumbList(array $folder): array
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{
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return array_map(
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fn($c) => ['id' => (int)$c['id'], 'name' => $c['name']],
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folderBreadcrumbs($folder)
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);
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}
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$view = $_GET['view'] ?? 'home';
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switch ($view) {
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case 'home':
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echo json_encode([
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'courses' => array_map(fn($c) => folderSummary($c, $userId), childFolders(null)),
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'continue' => array_map(fn($r) => [
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'id' => (int)$r['id'],
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'name' => $r['name'],
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'folder_path' => $r['folder_path'],
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'position' => (float)$r['position_seconds'],
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'duration' => $r['duration_seconds'] !== null ? (float)$r['duration_seconds'] : null,
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], continueWatching($userId)),
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]);
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break;
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case 'folder':
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$folder = getFolder((int)($_GET['id'] ?? 0));
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if (!$folder) {
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http_response_code(404);
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echo json_encode(['error' => 'Folder not found']);
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break;
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}
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echo json_encode([
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'folder' => ['id' => (int)$folder['id'], 'name' => $folder['name']],
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'breadcrumbs' => crumbList($folder),
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'progress' => folderProgress($userId, $folder['path']),
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'subfolders' => array_map(fn($f) => folderSummary($f, $userId),
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childFolders((int)$folder['id'])),
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'videos' => array_map('videoSummary',
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folderVideos((int)$folder['id'], $userId)),
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]);
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break;
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case 'video':
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$video = getVideo((int)($_GET['id'] ?? 0));
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if (!$video) {
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http_response_code(404);
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echo json_encode(['error' => 'Video not found']);
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break;
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}
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$folder = getFolder((int)$video['folder_id']);
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$playlist = folderVideos((int)$folder['id'], $userId);
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$stmt = db()->prepare(
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'SELECT position_seconds, completed FROM video_progress
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WHERE user_id = ? AND video_id = ?'
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);
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$stmt->execute([$userId, (int)$video['id']]);
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$saved = $stmt->fetch() ?: null;
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$resumeAt = ($saved && !$saved['completed'] && $saved['position_seconds'] > 5)
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? (float)$saved['position_seconds'] : 0;
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$prevId = $nextId = null;
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foreach ($playlist as $i => $p) {
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if ((int)$p['id'] === (int)$video['id']) {
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$prevId = isset($playlist[$i - 1]) ? (int)$playlist[$i - 1]['id'] : null;
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$nextId = isset($playlist[$i + 1]) ? (int)$playlist[$i + 1]['id'] : null;
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break;
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}
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}
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echo json_encode([
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'video' => ['id' => (int)$video['id'], 'name' => $video['name']],
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'folder' => ['id' => (int)$folder['id'], 'name' => $folder['name']],
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'breadcrumbs' => crumbList($folder),
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'playlist' => array_map('videoSummary', $playlist),
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'resume_at' => $resumeAt,
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'prev_id' => $prevId,
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'next_id' => $nextId,
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'stream_url' => 'stream.php?id=' . (int)$video['id'],
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]);
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break;
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default:
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http_response_code(400);
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echo json_encode(['error' => 'Unknown view']);
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}
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@@ -0,0 +1,64 @@
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<?php
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// GET api/progress.php?video_id=N -> saved progress for this user/video
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// POST api/progress.php -> save progress
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// JSON body: {video_id, position, duration}
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// (also accepts form-encoded fields; used by navigator.sendBeacon)
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require_once __DIR__ . '/../includes/auth.php';
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require_once __DIR__ . '/../includes/functions.php';
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header('Content-Type: application/json');
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$userId = requireLoginApi();
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if ($_SERVER['REQUEST_METHOD'] === 'GET') {
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$videoId = (int)($_GET['video_id'] ?? 0);
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$stmt = db()->prepare(
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'SELECT position_seconds, duration_seconds, completed
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FROM video_progress WHERE user_id = ? AND video_id = ?'
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);
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$stmt->execute([$userId, $videoId]);
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echo json_encode($stmt->fetch() ?: ['position_seconds' => 0, 'duration_seconds' => null, 'completed' => 0]);
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exit;
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}
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if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
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http_response_code(405);
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echo json_encode(['error' => 'Method not allowed']);
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exit;
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}
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$raw = file_get_contents('php://input');
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$data = json_decode($raw, true);
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if (!is_array($data)) {
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parse_str($raw, $data); // sendBeacon posts form-encoded
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}
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$videoId = (int)($data['video_id'] ?? 0);
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$position = max(0, (float)($data['position'] ?? 0));
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$duration = (float)($data['duration'] ?? 0);
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if ($videoId <= 0 || !getVideo($videoId)) {
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http_response_code(400);
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echo json_encode(['error' => 'Unknown video']);
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exit;
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}
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$completed = ($duration > 0 && $position / $duration >= COMPLETE_THRESHOLD) ? 1 : 0;
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$db = db();
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$stmt = $db->prepare(
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'INSERT INTO video_progress (user_id, video_id, position_seconds, duration_seconds, completed)
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VALUES (?, ?, ?, ?, ?)
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ON DUPLICATE KEY UPDATE
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position_seconds = VALUES(position_seconds),
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duration_seconds = VALUES(duration_seconds),
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completed = GREATEST(completed, VALUES(completed))' // once complete, stays complete
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);
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$stmt->execute([$userId, $videoId, $position, $duration > 0 ? $duration : null, $completed]);
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// Cache the duration on the video row so listings can show it without ffprobe.
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if ($duration > 0) {
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$db->prepare('UPDATE videos SET duration_seconds = ? WHERE id = ? AND duration_seconds IS NULL')
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->execute([$duration, $videoId]);
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}
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echo json_encode(['ok' => true, 'completed' => (bool)$completed]);
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@@ -0,0 +1,20 @@
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<?php
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// POST api/scan.php -> rescan the library, returns stats.
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require_once __DIR__ . '/../includes/auth.php';
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require_once __DIR__ . '/../includes/functions.php';
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header('Content-Type: application/json');
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requireLoginApi();
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if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
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http_response_code(405);
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echo json_encode(['error' => 'Method not allowed']);
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exit;
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}
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try {
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echo json_encode(['ok' => true, 'stats' => scanLibrary()]);
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} catch (Throwable $e) {
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http_response_code(500);
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echo json_encode(['error' => $e->getMessage()]);
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}
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