nextcloud-server/core/Migrations/Version14000Date20180516101403.php

<?php
/**
 * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
namespace OC\Core\Migrations;

use OCP\DB\ISchemaWrapper;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;

class Version14000Date20180516101403 extends SimpleMigrationStep {
	/**
	 * @param IOutput $output
	 * @param \Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
	 * @param array $options
	 * @return null|ISchemaWrapper
	 */
	public function changeSchema(IOutput $output, \Closure $schemaClosure, array $options) {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		$table = $schema->getTable('authtoken');

		if (!$table->hasColumn('expires')) {
			$table->addColumn('expires', 'integer', [
				'notnull' => false,
				'length' => 4,
				'default' => null,
				'unsigned' => true,
			]);

			return $schema;
		}
		return null;
	}
}