nextcloud-forum/lib/Db/GuestSessionMapper.php

<?php

declare(strict_types=1);

// SPDX-FileCopyrightText: Chen Asraf <contact@casraf.dev>
// SPDX-License-Identifier: AGPL-3.0-or-later

namespace OCA\Forum\Db;

use OCA\Forum\AppInfo\Application;
use OCP\AppFramework\Db\DoesNotExistException;
use OCP\AppFramework\Db\QBMapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;

/**
 * @template-extends QBMapper<GuestSession>
 */
class GuestSessionMapper extends QBMapper {
	public function __construct(
		IDBConnection $db,
	) {
		parent::__construct($db, Application::tableName('forum_guest_sessions'), GuestSession::class);
	}

	/**
	 * @throws \OCP\AppFramework\Db\MultipleObjectsReturnedException
	 * @throws DoesNotExistException
	 */
	public function findByToken(string $token): GuestSession {
		$qb = $this->db->getQueryBuilder();
		$qb->select('*')
			->from($this->getTableName())
			->where(
				$qb->expr()->eq('session_token', $qb->createNamedParameter($token, IQueryBuilder::PARAM_STR))
			);
		return $this->findEntity($qb);
	}

	/**
	 * Check if a display name already exists
	 */
	public function displayNameExists(string $displayName): bool {
		$qb = $this->db->getQueryBuilder();
		$qb->select($qb->func()->count('*', 'cnt'))
			->from($this->getTableName())
			->where(
				$qb->expr()->eq('display_name', $qb->createNamedParameter($displayName, IQueryBuilder::PARAM_STR))
			);
		$result = $qb->executeQuery();
		$count = (int)$result->fetchOne();
		$result->closeCursor();
		return $count > 0;
	}
}