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<?php namespace Money\Exchange; use Exchanger\CurrencyPair as ExchangerCurrencyPair; use Exchanger\Contract\ExchangeRateProvider; use Exchanger\Exception\Exception as ExchangerException; use Exchanger\ExchangeRateQuery; use Money\Currency; use Money\CurrencyPair; use Money\Exception\UnresolvableCurrencyPairException; use Money\Exchange; /** * Provides a way to get exchange rate from a third-party source and return a currency pair. * * @author Maksim (Ellrion) Platonov <ellrion11@gmail.com> */ final class ExchangerExchange implements Exchange { /** * @var ExchangeRateProvider */ private $exchanger; /** * @param ExchangeRateProvider $exchanger */ public function __construct(ExchangeRateProvider $exchanger) { $this->exchanger = $exchanger; } /** * {@inheritdoc} */ public function quote(Currency $baseCurrency, Currency $counterCurrency) { try { $query = new ExchangeRateQuery( new ExchangerCurrencyPair($baseCurrency->getCode(), $counterCurrency->getCode()) ); $rate = $this->exchanger->getExchangeRate($query); } catch (ExchangerException $e) { throw UnresolvableCurrencyPairException::createFromCurrencies($baseCurrency, $counterCurrency); } return new CurrencyPair($baseCurrency, $counterCurrency, $rate->getValue()); } }
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