<?php

declare(strict_types=1);

/**
 * @copyright Copyright (c) 2022 Murena SAS <akhil.potukuchi.ext@murena.com>
 *
 * @author Murena SAS <akhil.potukuchi.ext@murena.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\DAV\Migration;

use Closure;
use Doctrine\DBAL\Schema\SchemaException;
use OCP\DB\ISchemaWrapper;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;

class Version1029Date20221114151721 extends SimpleMigrationStep {

	/**
	 * @param IOutput $output
	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
	 * @param array $options
	 * @return null|ISchemaWrapper
	 * @throws SchemaException
	 */
	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();
		$calendarObjectsTable = $schema->getTable('calendarobjects');
		if(!$calendarObjectsTable->hasIndex('calobj_clssfction_index')) {
			$calendarObjectsTable->addIndex(['classification'], 'calobj_clssfction_index');
			return $schema;
		}
		return null;
	}

}