<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2018 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace Fisharebest\Webtrees\Http\Middleware;

use Closure;
use Fisharebest\Webtrees\Database;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Throwable;

/**
 * Middleware to wrap a request in a transaction.
 */
class UseTransaction implements MiddlewareInterface {
	/**
	 * @param Request $request
	 * @param Closure $next
	 *
	 * @return Response
	 * @throws Throwable
	 */
	public function handle(Request $request, Closure $next): Response {
		$connected = Database::isConnected();
		if ($connected) {
			Database::beginTransaction();
		}

		try {
			$response = $next($request);

			if ($connected) {
				Database::commit();
			}
		} catch (Throwable $ex) {
			if ($connected) {
				Database::rollBack();
			}

			throw $ex;
		}

		return $response;
	}
}