<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM - Open Source CRM application.
 * Copyright (C) 2014-2020 Yuri Kuznetsov, Taras Machyshyn, Oleksiy 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\Core\ORM;

use Espo\Core\{
    InjectableFactory,
    Utils\ClassFinder,
};

use Espo\ORM\Metadata;
use Espo\ORM\IEntity;
use Espo\ORM\EntityManager;

use Espo\Core\Exceptions\Error;

use Espo\ORM\EntityFactory as EntityFactoryInterface;

class EntityFactory implements EntityFactoryInterface
{
    protected $classFinder;

    protected $entityManager = null;

    public function __construct(ClassFinder $classFinder)
    {
        $this->classFinder = $classFinder;
    }

    protected function getClassName(string $name) : ?string
    {
        return $this->classFinder->find('Entities', $name);
    }

    public function setEntityManager(EntityManager $entityManager)
    {
        if ($this->entityManager) {
            throw new Error("EntityManager can be set only once.");
        }
        $this->entityManager = $entityManager;
    }

    public function create(string $name) : IEntity
    {
        $className = $this->getClassName($name);
        if (!class_exists($className)) {
            $className = Entity::class;
        }

        $defs = $this->entityManager->getMetadata()->get($name);

        if (is_null($defs)) {
            throw new Error("Entity '{$name}' is not defined in metadata.");
        }

        return new $className($defs, $this->entityManager);
    }
}