<?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/>.

/**
 * This file keeps track of upgrades to the h5pactivity module
 *
 * Sometimes, changes between versions involve
 * alterations to database structures and other
 * major things that may break installations.
 *
 * The upgrade function in this file will attempt
 * to perform all the necessary actions to upgrade
 * your older installation to the current version.
 *
 * If there's something it cannot do itself, it
 * will tell you what you need to do.
 *
 * The commands in here will all be database-neutral,
 * using the methods of database_manager class
 *
 * Please do not forget to use upgrade_set_timeout()
 * before any action that may take longer time to finish.
 *
 * @package   mod_h5pactivity
 * @copyright 2020 Ferran Recio <ferran@moodle.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Function to upgrade mod_h5pactivity.
 * @param int $oldversion the version we are upgrading from
 * @return bool result
 */
function xmldb_h5pactivity_upgrade($oldversion) {
    global $DB;

    // 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.

    if ($oldversion < 2023042401) {
        // Remove any orphaned attempt/result records (pointing to non-existing activities).
        $DB->delete_records_select('h5pactivity_attempts', 'NOT EXISTS (
            SELECT 1 FROM {h5pactivity} h5p WHERE h5p.id = {h5pactivity_attempts}.h5pactivityid
        )');

        $DB->delete_records_select('h5pactivity_attempts_results', 'NOT EXISTS (
            SELECT 1 FROM {h5pactivity_attempts} attempt WHERE attempt.id = {h5pactivity_attempts_results}.attemptid
        )');

        // H5pactivity savepoint reached.
        upgrade_mod_savepoint(true, 2023042401, 'h5pactivity');
    }

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

    return true;
}