<?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 course summary block
 *
 * 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.
 *
 * @since Moodle 2.0
 * @package block_course_summary
 * @copyright 2012 Mark Nelson <markn@moodle.com>
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

/**
 * Handles upgrading instances of this block.
 *
 * @param int $oldversion
 * @param object $block
 */
function xmldb_block_course_summary_upgrade($oldversion, $block) {

<     global $CFG;



>     global $CFG, $DB;



    // Automatically generated Moodle v3.6.0 release upgrade line.
    // Put any upgrade step following this.

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

    // Automatically generated Moodle v3.8.0 release upgrade line.
    // Put any upgrade step following this.

    // Automatically generated Moodle v3.9.0 release upgrade line.
    // Put any upgrade step following this.


<     // Automatically generated Moodle v3.10.0 release upgrade line.
<     // Put any upgrade step following this.



>     if ($oldversion < 2021121600) {
>         // From Moodle 4.0, this block has been disabled by default in new installations.
>         // If the site has no instances of this block, it will disabled during the upgrading process too.
>         $totalcount = $DB->count_records('block_instances', ['blockname' => 'course_summary']);
>         if ($totalcount == 0) {
>             $DB->set_field('block', 'visible', 0, ['name' => 'course_summary']);
>         }
> 
>         upgrade_block_savepoint(true, 2021121600, 'course_summary', false);
>     }




<     // Automatically generated Moodle v3.11.0 release upgrade line.



>     // Automatically generated Moodle v4.0.0 release upgrade line.


    // Put any upgrade step following this.

    return true;
}