<?php
/**
 * TransactionCurrencyFactory.php
 * Copyright (c) 2018 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III 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.
 *
 * Firefly III 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 Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Factory;

use FireflyIII\Models\TransactionCurrency;

/**
 * Class TransactionCurrencyFactory
 */
class TransactionCurrencyFactory
{
    /**
     * @param int|null    $currencyId
     * @param null|string $currencyCode
     *
     * @return TransactionCurrency|null
     */
    public function find(?int $currencyId, ?string $currencyCode): ?TransactionCurrency
    {
        $currencyCode = strval($currencyCode);
        $currencyId   = intval($currencyId);

        if (strlen($currencyCode) === 0 && intval($currencyId) === 0) {
            return null;
        }

        // first by ID:
        if ($currencyId > 0) {
            $currency = TransactionCurrency::find($currencyId);
            if (!is_null($currency)) {
                return $currency;
            }
        }
        // then by code:
        if (strlen($currencyCode) > 0) {
            $currency = TransactionCurrency::whereCode($currencyCode)->first();
            if (!is_null($currency)) {
                return $currency;
            }
        }

        return null;
    }


}