Harwinder Sekhon
3ae6c1ae2e
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.
71 lines
1.9 KiB
PHP
71 lines
1.9 KiB
PHP
<?php
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require_once __DIR__ . '/db.php';
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if (session_status() === PHP_SESSION_NONE) {
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session_start();
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}
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function currentUserId(): ?int
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{
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return isset($_SESSION['user_id']) ? (int)$_SESSION['user_id'] : null;
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}
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function currentUsername(): ?string
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{
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return $_SESSION['username'] ?? null;
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}
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function requireLogin(): int
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{
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$uid = currentUserId();
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if ($uid === null) {
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header('Location: login.php');
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exit;
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}
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return $uid;
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}
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function requireLoginApi(): int
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{
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$uid = currentUserId();
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if ($uid === null) {
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http_response_code(401);
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header('Content-Type: application/json');
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echo json_encode(['error' => 'Not logged in']);
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exit;
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}
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return $uid;
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}
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function attemptLogin(string $username, string $password): bool
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{
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$stmt = db()->prepare('SELECT id, username, password_hash FROM users WHERE username = ?');
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$stmt->execute([$username]);
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$user = $stmt->fetch();
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if ($user && password_verify($password, $user['password_hash'])) {
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session_regenerate_id(true);
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$_SESSION['user_id'] = (int)$user['id'];
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$_SESSION['username'] = $user['username'];
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return true;
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}
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return false;
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}
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function registerUser(string $username, string $password): string|true
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{
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if (!preg_match('/^[A-Za-z0-9_.-]{3,50}$/', $username)) {
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return 'Username must be 3-50 characters (letters, digits, _ . -).';
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}
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if (strlen($password) < 6) {
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return 'Password must be at least 6 characters.';
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}
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$stmt = db()->prepare('SELECT id FROM users WHERE username = ?');
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$stmt->execute([$username]);
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if ($stmt->fetch()) {
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return 'That username is already taken.';
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}
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$stmt = db()->prepare('INSERT INTO users (username, password_hash) VALUES (?, ?)');
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$stmt->execute([$username, password_hash($password, PASSWORD_DEFAULT)]);
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return true;
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}
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