<?php

/**
 * 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 2 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @author Southparkfan
 * @version 1.0
 */

require_once '/srv/mediawiki/w/maintenance/Maintenance.php';

class ApplyPatchT6095 extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = 'ApplyPatchT6095';
        }

        public function execute() {
                global $wgLocalDatabases;

                sort( $wgLocalDatabases );

                $dbClusterArr = [
                        'c1' => [],
                        'c2' => [],
                        'c3' => [],
                        'c4' => [],
                ];

                foreach ( $wgLocalDatabases as $wikiDb ) {
                        $wikiObj = new RemoteWiki( $wikiDb );

                        $dbClusterArr[$wikiObj->getDBCluster()][] = $wikiDb;

                        unset( $wikiObj );
                }

                foreach ( $dbClusterArr['c2'] as $wikiDb ) {
                        $dbObj = wfGetDB( DB_MASTER, [], $wikiDb );
                        $rlTable = [];
                        $rlTable[$wikiDb] = [];

                        foreach ( $dbObj->query( 'DESCRIBE rottenlinks' ) as $row ) {
                                $rlTable[$wikiDb][$row->Field] = [
                                        'Type' => $row->Type,
                                        'Key' => $row->Key
                                ];
                        }

                        if ( !isset( $rlTable[$wikiDb]['rl_id'] ) ) {
                                $this->output( "ALTER TABLE {$wikiDb}.rottenlinks DROP INDEX IF EXISTS `PRIMARY`;\n" );
                                $this->output( "ALTER TABLE {$wikiDb}.rottenlinks ADD COLUMN rl_id INT AUTO_INCREMENT PRIMARY KEY;\n" );
                                $this->output( "ALTER TABLE {$wikiDb}.rottenlinks MODIFY COLUMN rl_id INT AUTO_INCREMENT FIRST;\n" );
                        }

                        if ( $rlTable[$wikiDb]['rl_externallink']['Type'] != 'blob' ) {
                                $this->output( "ALTER TABLE {$wikiDb}.rottenlinks MODIFY COLUMN rl_externallink BLOB NOT NULL;\n" );
                        }
                }
        }
}

$maintClass = 'ApplyPatchT6095';
require_once RUN_MAINTENANCE_IF_MAIN;