<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2018 webtrees development team
 * This program 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.
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace Fisharebest\Webtrees\Schema;

use Fisharebest\Webtrees\Database;
use PDOException;

/**
 * Upgrade the database schema from version 20 to version 21.
 */
class Migration20 implements MigrationInterface
{
    /**
     * Upgrade to to the next version.
     *
     * @return void
     */
    public function upgrade(): void
    {
        // Delete some old/unused configuration settings
        Database::exec("DELETE FROM `##gedcom_setting` WHERE setting_name IN ('MEDIA_EXTERNAL')");

        // Delete old table
        Database::exec("DROP TABLE IF EXISTS `##media_mapping`");

        // Make this table look like all the others
        try {
            Database::exec(
                "ALTER TABLE `##media`" .
                " DROP   m_id," .
                " CHANGE m_media   m_id       VARCHAR(20)  COLLATE utf8_unicode_ci NOT NULL," .
                " CHANGE m_file    m_filename VARCHAR(512) COLLATE utf8_unicode_ci DEFAULT NULL," .
                " CHANGE m_gedfile m_file     INTEGER                              NOT NULL," .
                " CHANGE m_gedrec  m_gedcom   MEDIUMTEXT   COLLATE utf8_unicode_ci DEFAULT NULL," .
                " ADD    m_type               VARCHAR(20)  COLLATE utf8_unicode_ci NULL AFTER m_ext," .
                " ADD    PRIMARY KEY     (m_file, m_id)," .
                " ADD            KEY ix2 (m_ext, m_type)," .
                " ADD            KEY ix3 (m_titl)"
            );
        } catch (PDOException $ex) {
            // Assume we've already done this
        }

        // Populate the new column
        Database::exec("UPDATE `##media` SET m_type = SUBSTRING_INDEX(SUBSTRING_INDEX(m_gedcom, '\n3 TYPE ', -1), '\n', 1) WHERE m_gedcom LIKE '%\n3 TYPE %'");
    }
}