<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM – Open Source CRM application.
 * Copyright (C) 2014-2025 EspoCRM, Inc.
 * Website: https://www.espocrm.com
 *
 * 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 <https://www.gnu.org/licenses/>.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
 ************************************************************************/

namespace Espo\Tools\CategoryTree\Move;

use Espo\Core\Exceptions\Forbidden;
use Espo\Core\Templates\Entities\CategoryTree;
use Espo\ORM\Entity;
use Espo\ORM\EntityManager;

class LoopReferenceChecker
{
    private const ATTR_PARENT_ID = 'parentId';

    public function __construct(
        private EntityManager $entityManager,
    ) {}

    /**
     * @throws Forbidden
     */
    public function check(CategoryTree $entity, Entity $reference): void
    {
        $parentId = $reference->get(self::ATTR_PARENT_ID);

        if (!$parentId) {
            return;
        }

        if ($parentId === $entity->getId()) {
            throw new Forbidden("Cannot move. Circle reference.");
        }

        $parent = $this->entityManager->getEntityById($entity->getEntityType(), $parentId);

        if (!$parent) {
            return;
        }

        $this->check($entity, $parent);
    }
}