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76 lines
2.1 KiB
PHP
76 lines
2.1 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* ExchangeRateConverter.php
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* Copyright (c) 2023 james@firefly-iii.org
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*
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* This file is part of Firefly III (https://github.com/firefly-iii).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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namespace FireflyIII\Support\Http\Api;
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use Carbon\Carbon;
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use FireflyIII\Exceptions\FireflyException;
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use FireflyIII\Models\TransactionCurrency;
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/**
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* Class ExchangeRateConverter
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*/
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class ExchangeRateConverter
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{
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use ConvertsExchangeRates;
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/**
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* @param TransactionCurrency $from
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* @param TransactionCurrency $to
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* @param Carbon $date
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* @param string $amount
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*
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* @return string
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* @throws FireflyException
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*/
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public function convert(TransactionCurrency $from, TransactionCurrency $to, Carbon $date, string $amount): string
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{
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$rate = $this->getCurrencyRate($from, $to, $date);
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return bcmul($amount, $rate);
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}
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/**
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* @param TransactionCurrency $from
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* @param TransactionCurrency $to
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* @param Carbon $date
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*
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* @return string
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* @throws FireflyException
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*/
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public function getCurrencyRate(TransactionCurrency $from, TransactionCurrency $to, Carbon $date): string
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{
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if (null === $this->enabled) {
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$this->getPreference();
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}
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// if not enabled, return "1"
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if (false === $this->enabled) {
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return '1';
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}
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$rate = $this->getRate($from, $to, $date);
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return '0' === $rate ? '1' : $rate;
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}
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}
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