<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Check URL и Pay URL протокола MONETA.Assistant.
 *
 * @package    paygw_moneta
 * @copyright  2026 Moneta Labs {@link https://moneta.ru/}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

define('NO_MOODLE_COOKIES', true);
define('NO_DEBUG_DISPLAY', true);

require_once(__DIR__ . '/../../../config.php');

use paygw_moneta\local\callback\CallbackHandler;
use paygw_moneta\local\ErrorLogLogger;
use paygw_moneta\local\protocol\CallbackResponse;

$method = $_SERVER['REQUEST_METHOD'] ?? '';
$fields = match ($method) {
    'POST' => $_POST,
    'GET' => $_GET,
    default => null,
};

$response = null;
if ($fields !== null) {
    try {
        $response = (new CallbackHandler())->handle($fields);
    } catch (\Throwable $exception) {
        (new ErrorLogLogger())->error('Колбэк отклонён: ' . get_class($exception));
    }
}
$response ??= CallbackResponse::fail();

header('Cache-Control: no-store');
header('Content-Type: ' . $response->contentType);
echo $response->body;