<?php
// API endpoint for updating sort order for categories or bookmarks
require_once __DIR__ . '/../include/auth.php';

header('Content-Type: application/json');

$input = json_decode(file_get_contents('php://input'), true);

if (!$input || !isset($input['type']) || !isset($input['order']) || !is_array($input['order'])) {
    http_response_code(400);
    echo json_encode(['error' => 'Invalid input.']);
    exit;
}

$type = $input['type'];
$order = $input['order'];
$table_name = '';

if ($type === 'category') {
    $table_name = 'categories';
} elseif ($type === 'bookmark') {
    $table_name = 'bookmarks';
} else {
    http_response_code(400);
    echo json_encode(['error' => 'Invalid type specified.']);
    exit;
}

try {
    $pdo->beginTransaction();

    $stmt = $pdo->prepare("UPDATE {$table_name} SET sort_order = ? WHERE id = ?");

    foreach ($order as $index => $id) {
        if (is_numeric($id)) {
            $stmt->execute([$index + 1, $id]);
        }
    }

    $pdo->commit();
    echo json_encode(['success' => true, 'message' => ucfirst($type) . ' order updated.']);

} catch (Exception $e) {
    $pdo->rollBack();
    http_response_code(500);
    echo json_encode(['error' => 'Database error: ' . $e->getMessage()]);
}