<?php
declare(strict_types=1);
namespace Money\Exchange;
use Exchanger\Exception\Exception as ExchangerException;
use Money\Currency;
use Money\CurrencyPair;
use Money\Exception\UnresolvableCurrencyPairException;
use Money\Exchange;
use Swap\Swap;
use function sprintf;
/**
* Provides a way to get exchange rate from a third-party source and return a currency pair.
*/
final class SwapExchange implements Exchange
{
public function __construct(private readonly Swap $swap)
{
}
public function quote(Currency $baseCurrency, Currency $counterCurrency): CurrencyPair
{
try {
$rate = $this->swap->latest($baseCurrency->getCode() . '/' . $counterCurrency->getCode());
} catch (ExchangerException) {
throw UnresolvableCurrencyPairException::createFromCurrencies($baseCurrency, $counterCurrency);
}
$rateValue = sprintf('%.14F', $rate->getValue());
return new CurrencyPair($baseCurrency, $counterCurrency, $rateValue);
}
}