<?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/>.

/**
 * Upgrade script for paygw_paypal.
 *
 * @package    paygw_paypal
 * @copyright  2021 Shamim Rezaie <shamim@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

/**
 * Upgrade the plugin.
 *
 * @param int $oldversion the version we are upgrading from
 * @return bool always true
 */
function xmldb_paygw_paypal_upgrade(int $oldversion): bool {
    global $DB;

    $dbman = $DB->get_manager();


<     if ($oldversion < 2020110901) {



>     if ($oldversion < 2021052501) {


        // Define key paymentid (foreign-unique) to be added to paygw_paypal.
        $table = new xmldb_table('paygw_paypal');
        $key = new xmldb_key('paymentid', XMLDB_KEY_FOREIGN_UNIQUE, ['paymentid'], 'payments', ['id']);

        // Launch add key paymentid.
        $dbman->add_key($table, $key);

        // Paypal savepoint reached.

<         upgrade_plugin_savepoint(true, 2020110901, 'paygw', 'paypal');



>         upgrade_plugin_savepoint(true, 2021052501, 'paygw', 'paypal');


    }

> 

>     // Automatically generated Moodle v4.0.0 release upgrade line.
    return true;
>     // Put any upgrade step following this.


}