<?php
/**
 * @copyright Copyright (c) 2017 Joas Schilling <coding@schilljs.com>
 *
 * @author Joas Schilling <coding@schilljs.com>
 *
 * @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/>.
 *
 */

namespace OCA\TwoFactorBackupCodes\Migration;

use Doctrine\DBAL\Schema\Schema;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\Migration\SimpleMigrationStep;
use OCP\Migration\IOutput;

class Version1002Date20170607113030 extends SimpleMigrationStep {

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

	/**
	 * @param IDBConnection $connection
	 */
	public function __construct(IDBConnection $connection) {
		$this->connection = $connection;
	}

	/**
	 * @param IOutput $output
	 * @param \Closure $schemaClosure The `\Closure` returns a `Schema`
	 * @param array $options
	 * @since 13.0.0
	 */
	public function preSchemaChange(IOutput $output, \Closure $schemaClosure, array $options) {
		/** @var Schema $schema */
		$schema = $schemaClosure();

		if (!$schema->hasTable('twofactor_backup_codes')) {
			// Legacy table does not exist
			return;
		}

		$insert = $this->connection->getQueryBuilder();
		$insert->insert('twofactor_backupcodes')
			->values([
				// Inserting with id might fail: 'id' => $insert->createParameter('id'),
				'user_id' => $insert->createParameter('user_id'),
				'code' => $insert->createParameter('code'),
				'used' => $insert->createParameter('used'),
			]);

		$query = $this->connection->getQueryBuilder();
		$query->select('*')
			->from('twofactor_backup_codes')
			->orderBy('id', 'ASC');
		$result = $query->execute();

		$output->startProgress();
		while ($row = $result->fetch()) {
			$output->advance();

			$insert
				// Inserting with id might fail: ->setParameter('id', $row['id'], IQueryBuilder::PARAM_INT)
				->setParameter('user_id', $row['user_id'], IQueryBuilder::PARAM_STR)
				->setParameter('code', $row['code'], IQueryBuilder::PARAM_STR)
				->setParameter('used', $row['used'], IQueryBuilder::PARAM_INT)
				->execute();
		}
		$output->finishProgress();
	}

	/**
	 * @param IOutput $output
	 * @param \Closure $schemaClosure The `\Closure` returns a `Schema`
	 * @param array $options
	 * @return null|Schema
	 * @since 13.0.0
	 */
	public function changeSchema(IOutput $output, \Closure $schemaClosure, array $options) {
		/** @var Schema $schema */
		$schema = $schemaClosure();

		if ($schema->hasTable('twofactor_backup_codes')) {
			$schema->dropTable('twofactor_backup_codes');
			return $schema;
		}
		return null;
	}
}
