<?php
/**
 * @copyright Copyright (c) 2020 Julius Härtl <jus@bitgrid.net>
 *
 * @author Julius Härtl <jus@bitgrid.net>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */

declare(strict_types=1);

namespace OCA\FederatedFileSharing\Migration;

use Closure;
use Doctrine\DBAL\Types\Type;
use OCP\DB\Types;
use OCP\DB\ISchemaWrapper;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;

class Version1011Date20201120125158 extends SimpleMigrationStep {

	/** @var IDBConnection */
	private $connection;

	public function __construct(IDBConnection $connection) {
		$this->connection = $connection;
	}

	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		if ($schema->hasTable('federated_reshares')) {
			$table = $schema->getTable('federated_reshares');
			$remoteIdColumn = $table->getColumn('remote_id');
			if ($remoteIdColumn && $remoteIdColumn->getType()->getName() !== Types::STRING) {
				$remoteIdColumn->setNotnull(false);
				$remoteIdColumn->setType(Type::getType(Types::STRING));
				$remoteIdColumn->setOptions(['length' => 255]);
				$remoteIdColumn->setDefault('');
				return $schema;
			}
		}

		return null;
	}

	public function postSchemaChange(IOutput $output, \Closure $schemaClosure, array $options) {
		$qb = $this->connection->getQueryBuilder();
		$qb->update('federated_reshares')
			->set('remote_id', $qb->createNamedParameter(''))
			->where($qb->expr()->eq('remote_id', $qb->createNamedParameter('-1')));
		$qb->execute();
	}
}