<?php
/**
 * PeerTube video deletion endpoint (admin).
 *
 * POST /admin/actions/peertube-delete.php
 * Body: csrf_token + uuid
 *
 * Deletes a video from the PeerTube channel entirely.
 */
require_once __DIR__ . '/../../../bootstrap.php';
require_once __DIR__ . '/../../../src/AdminAuth.php';
AdminAuth::requireLogin();

if ($_SERVER['REQUEST_METHOD'] !== 'POST'
    || !isset($_POST['csrf_token'], $_SESSION['csrf_token'])
    || !hash_equals($_SESSION['csrf_token'], $_POST['csrf_token'])) {
    http_response_code(403);
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(['success' => false, 'error' => 'CSRF invalide.']);
    exit;
}

$uuid = trim($_POST['uuid'] ?? '');
if ($uuid === '' || !preg_match('/^[a-zA-Z0-9\-_]+$/', $uuid)) {
    http_response_code(400);
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(['success' => false, 'error' => 'UUID invalide.']);
    exit;
}

require_once APP_ROOT . '/src/Database.php';
require_once APP_ROOT . '/src/PeerTubeService.php';

$db = new Database();

if (!PeerTubeService::isConfigured($db)) {
    http_response_code(503);
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(['success' => false, 'error' => 'PeerTube non configuré.']);
    exit;
}

// Also remove any stale DB references to this UUID
$pdo = $db->getConnection();
$stmt = $pdo->prepare(
    "SELECT id FROM thesis_files WHERE file_path = ?"
);
$stmt->execute(['peertube_ids:' . $uuid]);
$dbRefs = $stmt->fetchAll(PDO::FETCH_COLUMN);
$dbCleaned = count($dbRefs);
foreach ($dbRefs as $id) {
    $pdo->prepare("DELETE FROM thesis_files WHERE id = ?")->execute([$id]);
}

$deleted = PeerTubeService::deleteVideo($db, $uuid);

$_SESSION['csrf_token'] = bin2hex(random_bytes(32));

if ($deleted) {
    error_log("[peertube-delete] uuid=$uuid deleted" . ($dbCleaned > 0 ? " + $dbCleaned DB ref(s) cleaned" : ""));
    if (isset($_SERVER['HTTP_HX_REQUEST'])) {
        require __DIR__ . '/peertube-orphans-fragment.php';
        exit;
    }
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(['success' => true]);
} else {
    error_log("[peertube-delete] uuid=$uuid delete failed" . ($dbCleaned > 0 ? " (cleaned $dbCleaned DB refs though)" : ""));
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(['success' => false, 'error' => 'Échec de la suppression sur PeerTube (vérifiez les logs).']);
}
exit;