#Gocha#

<?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/>.

/**
 * Elasticsearch engine upgrade code.
 *
 * @package     search_elastic
 * @copyright   2018 Matt Porritt <mattp@catalyst-au.net>
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

if ($oldversion < 2019042101) {
        // Check for corrupt index definition and fix if required.
        // Fix involves deleting all indexed documents.
        $elastic = new \search_elastic\engine();

if ($elastic->is_server_ready() === true) {
            $validindex = $elastic->validate_index();

if (!$validindex) {
                // Index insn't valid, lets delete it.
                // Delete operation will recreate index with correct mapping.
                $elastic->delete();

// Let Moodle know index has been deleted so contents are automatically reindexed.
                $searchmanager = \core_search\manager::instance();
                $searchmanager->delete_index();
            }
        }

upgrade_plugin_savepoint(true, 2019042101, 'search', 'elastic');
    }

if ($oldversion < 2020022800) {
        // Manually upgrade boosting settings to new control name.
        require_once(__DIR__.'/upgradelib.php');
        update_boosting_setting_names();
        upgrade_plugin_savepoint(true, 2020022800, 'search', 'elastic');
    }

if ($oldversion < 2023092000) {
        // Update existing default values that have been set to http://127.0.0.1.
        // To avoid check API from failing when elasticsearch is not setup.
        $DB->execute("UPDATE {config_plugins}
                         SET value = ''
                       WHERE plugin = 'search_elastic' AND name = 'hostname' AND value = 'http://127.0.0.1'");

upgrade_plugin_savepoint(true, 2023092000, 'search', 'elastic');
    }

return true;
}