<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM – Open Source CRM application.
 * Copyright (C) 2014-2026 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\OpenApi\Util;

use Espo\Core\Utils\Metadata;
use Espo\ORM\Defs\FieldDefs;

class EnumOptionsProvider
{
    public function __construct(
        private Metadata $metadata,
    ) {}

    /**
     * @return ?string[]
     */
    public function get(FieldDefs $fieldDefs): ?array
    {
        /** @var ?string $path */
        $path = $fieldDefs->getParam('optionsPath');
        /** @var ?string $path */
        $ref = $fieldDefs->getParam('optionsReference');

        if (!$path && $ref && str_contains($ref, '.')) {
            [$refEntityType, $refField] = explode('.', $ref);

            $path = "entityDefs.$refEntityType.fields.$refField.options";
        }

        /** @var ?string[] $optionList */
        $optionList = $path ?
            $this->metadata->get($path) :
            $fieldDefs->getParam('options');

        return $optionList;
    }
}