Viewing file:  ExchangerExchange.php (1.39 KB) -rw-r--r--
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<?php
declare(strict_types=1);
namespace Money\Exchange;
use Exchanger\Contract\ExchangeRateProvider;
use Exchanger\CurrencyPair as ExchangerCurrencyPair;
use Exchanger\Exception\Exception as ExchangerException;
use Exchanger\ExchangeRateQuery;
use Money\Currency;
use Money\CurrencyPair;
use Money\Exception\UnresolvableCurrencyPairException;
use Money\Exchange;
use function assert;
use function is_numeric;
use function sprintf;
/**
* Provides a way to get exchange rate from a third-party source and return a currency pair.
*/
final class ExchangerExchange implements Exchange
{
private ExchangeRateProvider $exchanger;
public function __construct(ExchangeRateProvider $exchanger)
{
$this->exchanger = $exchanger;
}
public function quote(Currency $baseCurrency, Currency $counterCurrency): CurrencyPair
{
try {
$query = new ExchangeRateQuery(
new ExchangerCurrencyPair($baseCurrency->getCode(), $counterCurrency->getCode())
);
$rate = $this->exchanger->getExchangeRate($query);
} catch (ExchangerException) {
throw UnresolvableCurrencyPairException::createFromCurrencies($baseCurrency, $counterCurrency);
}
$rateValue = sprintf('%.14F', $rate->getValue());
assert(is_numeric($rateValue));
return new CurrencyPair($baseCurrency, $counterCurrency, $rateValue);
}
}
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