<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OCA\Mail\Migration;

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

class Version3400Date20230819161945 extends SimpleMigrationStep {

	/**
	 * @param IOutput $output
	 * @param Closure(): ISchemaWrapper $schemaClosure
	 * @param array $options
	 * @return null|ISchemaWrapper
	 */
	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
		$schema = $schemaClosure();

		$messagesRetentionTable = $schema->getTable('mail_messages_retention');
		if ($messagesRetentionTable->hasIndex('mail_msg_retention_msgid_idx')) {
			$messagesRetentionTable->dropIndex('mail_msg_retention_msgid_idx');
		}

		return $schema;
	}
}
