<?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\Core\Formula\Functions\ExtGroup\CurrencyGroup;

use Espo\Core\Currency\ConfigDataProvider;
use Espo\Core\Currency\Converter;
use Espo\Core\Field\Currency;
use Espo\Core\Formula\EvaluatedArgumentList;
use Espo\Core\Formula\Exceptions\BadArgumentType;
use Espo\Core\Formula\Exceptions\TooFewArguments;
use Espo\Core\Formula\Func;

class ConvertType implements Func
{
    public function __construct(
        private ConfigDataProvider $configDataProvider,
        private Converter $converter
    ) {}

    public function process(EvaluatedArgumentList $arguments): string
    {
        if (count($arguments) < 2) {
            throw TooFewArguments::create(2);
        }

        $amount = $arguments[0];
        $fromCode = $arguments[1];
        $toCode = $arguments[2] ?? $this->configDataProvider->getDefaultCurrency();

        if (
            !is_string($amount) &&
            !is_int($amount) &&
            !is_float($amount)
        ) {
            throw BadArgumentType::create(1, 'int|float|string');
        }

        if (!is_string($fromCode)) {
            throw BadArgumentType::create(2, 'string');
        }

        if (!is_string($toCode)) {
            throw BadArgumentType::create(3, 'string');
        }

        $value = Currency::create($amount, $fromCode);

        $convertedValue = $this->converter->convert($value, $toCode);

        return $convertedValue->getAmountAsString();
    }
}
