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. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-11 10:25:35 -04:00
commit b9c92540d4
16 changed files with 1328 additions and 0 deletions
@@ -0,0 +1,119 @@
+<?php
+// GET api/library.php?view=home              -> courses + continue-watching
+// GET api/library.php?view=folder&id=N       -> folder contents + progress
+// GET api/library.php?view=video&id=N        -> video + playlist + resume info
+require_once __DIR__ . '/../includes/auth.php';
+require_once __DIR__ . '/../includes/functions.php';
+
+header('Content-Type: application/json');
+$userId = requireLoginApi();
+
+function folderSummary(array $f, int $userId): array
+{
+    return [
+        'id'       => (int)$f['id'],
+        'name'     => $f['name'],
+        'progress' => folderProgress($userId, $f['path']),
+    ];
+}
+
+function videoSummary(array $v): array
+{
+    $duration = $v['duration_seconds'] ?? $v['watched_duration'] ?? null;
+    $position = (float)($v['position_seconds'] ?? 0);
+    return [
+        'id'        => (int)$v['id'],
+        'name'      => $v['name'],
+        'duration'  => $duration !== null ? (float)$duration : null,
+        'position'  => $position,
+        'completed' => (bool)($v['completed'] ?? false),
+        'percent'   => ($duration ?? 0) > 0 ? min(100, (int)round(100 * $position / $duration)) : 0,
+    ];
+}
+
+function crumbList(array $folder): array
+{
+    return array_map(
+        fn($c) => ['id' => (int)$c['id'], 'name' => $c['name']],
+        folderBreadcrumbs($folder)
+    );
+}
+
+$view = $_GET['view'] ?? 'home';
+
+switch ($view) {
+    case 'home':
+        echo json_encode([
+            'courses' => array_map(fn($c) => folderSummary($c, $userId), childFolders(null)),
+            'continue' => array_map(fn($r) => [
+                'id'          => (int)$r['id'],
+                'name'        => $r['name'],
+                'folder_path' => $r['folder_path'],
+                'position'    => (float)$r['position_seconds'],
+                'duration'    => $r['duration_seconds'] !== null ? (float)$r['duration_seconds'] : null,
+            ], continueWatching($userId)),
+        ]);
+        break;
+
+    case 'folder':
+        $folder = getFolder((int)($_GET['id'] ?? 0));
+        if (!$folder) {
+            http_response_code(404);
+            echo json_encode(['error' => 'Folder not found']);
+            break;
+        }
+        echo json_encode([
+            'folder'      => ['id' => (int)$folder['id'], 'name' => $folder['name']],
+            'breadcrumbs' => crumbList($folder),
+            'progress'    => folderProgress($userId, $folder['path']),
+            'subfolders'  => array_map(fn($f) => folderSummary($f, $userId),
+                                       childFolders((int)$folder['id'])),
+            'videos'      => array_map('videoSummary',
+                                       folderVideos((int)$folder['id'], $userId)),
+        ]);
+        break;
+
+    case 'video':
+        $video = getVideo((int)($_GET['id'] ?? 0));
+        if (!$video) {
+            http_response_code(404);
+            echo json_encode(['error' => 'Video not found']);
+            break;
+        }
+        $folder   = getFolder((int)$video['folder_id']);
+        $playlist = folderVideos((int)$folder['id'], $userId);
+
+        $stmt = db()->prepare(
+            'SELECT position_seconds, completed FROM video_progress
+             WHERE user_id = ? AND video_id = ?'
+        );
+        $stmt->execute([$userId, (int)$video['id']]);
+        $saved = $stmt->fetch() ?: null;
+        $resumeAt = ($saved && !$saved['completed'] && $saved['position_seconds'] > 5)
+            ? (float)$saved['position_seconds'] : 0;
+
+        $prevId = $nextId = null;
+        foreach ($playlist as $i => $p) {
+            if ((int)$p['id'] === (int)$video['id']) {
+                $prevId = isset($playlist[$i - 1]) ? (int)$playlist[$i - 1]['id'] : null;
+                $nextId = isset($playlist[$i + 1]) ? (int)$playlist[$i + 1]['id'] : null;
+                break;
+            }
+        }
+
+        echo json_encode([
+            'video'       => ['id' => (int)$video['id'], 'name' => $video['name']],
+            'folder'      => ['id' => (int)$folder['id'], 'name' => $folder['name']],
+            'breadcrumbs' => crumbList($folder),
+            'playlist'    => array_map('videoSummary', $playlist),
+            'resume_at'   => $resumeAt,
+            'prev_id'     => $prevId,
+            'next_id'     => $nextId,
+            'stream_url'  => 'stream.php?id=' . (int)$video['id'],
+        ]);
+        break;
+
+    default:
+        http_response_code(400);
+        echo json_encode(['error' => 'Unknown view']);
+}