webhook.php

<?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/>.

/**
 * Nolej webhook
 *
 * @package     local_nolej
 * @author      Vincenzo Padula <vincenzo@oc-group.eu>
 * @copyright   2024 OC Open Consulting SB Srl
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

// phpcs:disable moodle.Files.RequireLogin.Missing

require_once(__DIR__ . '/../../config.php');
require_once($CFG->dirroot . '/local/nolej/classes/api.php');

use local_nolej\api;

$nolej = new api();
$token = required_param('token', PARAM_NOTAGS);
$data = $nolej->decodetoken($token);

// Check for error message.
if (is_string($data)) {
    $nolej->respondwithmessage(400, $data);
    exit;
}

// Retrieve the context ID.
$contextid = property_exists($data, 'contextid')
    ? $data->contextid
    : SYSCONTEXTID;

// Looking for a file.
if (property_exists($data, 'fileid')) {
    $filename = $data->fileid;
    $dir = property_exists($data, 'documentid') ? api::datadir($data->documentid) : api::uploaddir();
    $filepath = $dir . '/' . $filename;

    if (file_exists($filepath) && is_file($filepath)) {
        // Delivering file.
        api::deliverfile($filepath);
    } else {
        // File not found.
        $nolej->respondwithmessage(404, 'File not available.');
    }

    exit;
}

// Activity result for a module.
if (property_exists($data, 'moduleid') && property_exists($data, 'userid')) {

    // Check module existence.
    $module = $DB->get_record(
        'local_nolej_module',
        [
            'id' => $data->moduleid,
            'user_id' => $data->userid,
        ]
    );

    if ($module == null) {
        // Module not found.
        $nolej->respondwithmessage(404, 'Module not found.');
        exit;
    }

    // Parse POST data.
    $nolej->parse($contextid);
}

// Request not valid.
$nolej->respondwithmessage(400, 'Request not valid.');