<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2024 F7cloud GmbH and F7cloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OCA\GroupFolders\Migration;

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

class Version19000Date20241029123147 extends SimpleMigrationStep {
	/**
	 * @param Closure(): ISchemaWrapper $schemaClosure
	 */
	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		if ($schema->hasTable('group_folders')) {
			$table = $schema->getTable('group_folders');
			if (!$table->hasIndex('gf_folders_folder_id')) {
				$table->addUniqueIndex(['folder_id'], 'gf_folders_folder_id');
				return $schema;
			}
		}

		return null;
	}
}