<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM - Open Source CRM application.
 * Copyright (C) 2014-2023 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
 * Website: https://www.espocrm.com
 *
 * EspoCRM is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * EspoCRM 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with EspoCRM. If not, see http://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 General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
 ************************************************************************/

namespace Espo\Tools\Attachment;

use Espo\Core\Exceptions\Error;

/**
 * @immutable
 */
class FieldData
{
    private string $field;
    private ?string $parentType;
    private ?string $relatedType;

    /**
     * @throws Error
     */
    public function __construct(
        string $field,
        ?string $parentType,
        ?string $relatedType
    ) {
        $this->field = $field;
        $this->parentType = $parentType;
        $this->relatedType = $relatedType;

        if (!$parentType && !$relatedType) {
            throw new Error("No parentType and relatedType.");
        }
    }

    public function getField(): string
    {
        return $this->field;
    }

    public function getParentType(): ?string
    {
        return $this->parentType;
    }

    public function getRelatedType(): ?string
    {
        return $this->relatedType;
    }
}