<?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/>.

/**
 * Multi-answer question type upgrade code.
 *
 * @package    qtype
 * @subpackage multianswer
 * @copyright  1999 onwards Martin Dougiamas {@link http://moodle.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Upgrade code for the multi-answer question type.
 * @param int $oldversion the version we are upgrading from.
 */
function xmldb_qtype_multianswer_upgrade($oldversion) {
    // Automatically generated Moodle v4.1.0 release upgrade line.
    // Put any upgrade step following this.

    // Automatically generated Moodle v4.2.0 release upgrade line.
    // Put any upgrade step following this.

    // Automatically generated Moodle v4.3.0 release upgrade line.
    // Put any upgrade step following this.

    // Automatically generated Moodle v4.4.0 release upgrade line.
    // Put any upgrade step following this.

    // Automatically generated Moodle v4.5.0 release upgrade line.
    // Put any upgrade step following this.

    if ($oldversion < 2024100701) {
        $task = new \qtype_multianswer\task\cleanup_duplicate_subquestions();
        if (count($task->find_duplicated_subquestions()) > 0) {
            mtrace('Duplicated subquestions found. Queueing cleanup task.');
            \core\task\manager::queue_adhoc_task($task);
        }
        upgrade_plugin_savepoint(true, 2024100701, 'qtype', 'multianswer');
    }

    return true;
}
