<?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/>.

/**
 * Folder module upgrade code
 *
 * This file keeps track of upgrades to
 * the resource 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_folder
 * @copyright 2009 Petr Skoda  {@link http://skodak.org}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

function xmldb_folder_upgrade($oldversion) {

<     global $CFG;



>     global $CFG, $DB;




<     // Automatically generated Moodle v3.5.0 release upgrade line.
<     // Put any upgrade step following this.



>     $dbman = $DB->get_manager(); // Loads ddl manager and xmldb classes.




<     // Automatically generated Moodle v3.6.0 release upgrade line.



>     // Automatically generated Moodle v3.9.0 release upgrade line.


    // Put any upgrade step following this.

>     if ($oldversion < 2021052501) {




<     // Automatically generated Moodle v3.7.0 release upgrade line.
<     // Put any upgrade step following this.



>         // Define field forcedownload to be added to folder.
>         $table = new xmldb_table('folder');
>         $field = new xmldb_field('forcedownload', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'showdownloadfolder');




<     // Automatically generated Moodle v3.8.0 release upgrade line.



>         // Conditionally launch add field forcedownload.
>         if (!$dbman->field_exists($table, $field)) {
>             $dbman->add_field($table, $field);
>         }
> 
>         // Folder savepoint reached.
>         upgrade_mod_savepoint(true, 2021052501, 'folder');
>     }
> 
>     // Automatically generated Moodle v4.0.0 release upgrade line.


    // Put any upgrade step following this.


<     // Automatically generated Moodle v3.9.0 release upgrade line.



>     // Automatically generated Moodle v4.1.0 release upgrade line.


    // Put any upgrade step following this.

    return true;
}