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<?php |
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namespace BenTools\Currency\Provider; |
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use BenTools\Currency\Model\CurrencyInterface; |
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use BenTools\Currency\Model\ExchangeRateFactoryInterface; |
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use BenTools\Currency\Model\ExchangeRateInterface; |
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use BenTools\Currency\Model\ExchangeRateNotFoundException; |
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use BenTools\Currency\Model\NativeExchangeRateFactory; |
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use DateTime; |
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use DateTimeImmutable; |
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use DateTimeInterface; |
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use DateTimeZone; |
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use Http\Client\HttpClient; |
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use Http\Discovery\HttpClientDiscovery; |
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use Http\Discovery\MessageFactoryDiscovery; |
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use Http\Message\RequestFactory; |
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use Psr\SimpleCache\CacheInterface; |
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final class CurrencyLayerProvider implements ExchangeRateProviderInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $accessKey; |
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/** |
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* @var HttpClient|null |
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*/ |
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private $client; |
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/** |
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* @var RequestFactory|null |
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*/ |
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private $requestFactory; |
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/** |
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* @var ExchangeRateFactoryInterface|null |
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*/ |
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private $exchangeRateFactory; |
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/** |
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* OpenExchangeRatesProvider constructor. |
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* @param string $accessKey |
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* @param HttpClient|null $client |
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* @param RequestFactory|null $requestFactory |
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* @param ExchangeRateFactoryInterface|null $exchangeRateFactory |
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* @throws \Http\Discovery\Exception\NotFoundException |
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*/ |
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public function __construct( |
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string $accessKey, |
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HttpClient $client = null, |
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RequestFactory $requestFactory = null, |
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ExchangeRateFactoryInterface $exchangeRateFactory = null |
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) { |
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$this->accessKey = $accessKey; |
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$this->client = $client ?? HttpClientDiscovery::find(); |
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$this->requestFactory = $requestFactory ?? MessageFactoryDiscovery::find(); |
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$this->exchangeRateFactory = $exchangeRateFactory ?? new NativeExchangeRateFactory(); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getExchangeRate(CurrencyInterface $sourceCurrency, CurrencyInterface $targetCurrency, DateTimeInterface $date = null): ExchangeRateInterface |
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{ |
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if (null === $date) { |
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$date = new DateTimeImmutable('now', new DateTimeZone('GMT')); |
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} |
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if ($date instanceof DateTime) { |
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$date = DateTimeImmutable::createFromMutable($date)->setTimezone(new DateTimeZone('GMT')); |
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} |
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if (!in_array('USD', [$sourceCurrency->getCode(), $targetCurrency->getCode()])) { |
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throw new ExchangeRateNotFoundException($sourceCurrency, $targetCurrency, "CurrencyLayer Free plan only provide USD-based currency conversions."); |
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} |
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// Same currencies |
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if ($sourceCurrency->getCode() === $targetCurrency->getCode()) { |
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return $this->exchangeRateFactory->create($sourceCurrency, $targetCurrency, 1); |
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} |
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// Invert currencies |
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if ('USD' === $targetCurrency->getCode()) { // CurrencyLayer free plan only provide USD -> * |
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$revertExchangeRate = $this->getExchangeRate($targetCurrency, $sourceCurrency, $date); |
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return $this->exchangeRateFactory->create($sourceCurrency, $targetCurrency, 1 / $revertExchangeRate->getRatio()); |
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} |
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$url = sprintf('http://apilayer.net/api/historical?access_key=%s&date=%s', $this->accessKey, $date->format('Y-m-d')); |
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$response = $this->client->sendRequest($this->requestFactory->createRequest('GET', $url)); |
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$json = json_decode((string) $response->getBody(), true); |
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if (isset($json['quotes'][$sourceCurrency->getCode() . $targetCurrency->getCode()])) { |
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return $this->exchangeRateFactory->create($sourceCurrency, $targetCurrency, $json['quotes'][$sourceCurrency->getCode() . $targetCurrency->getCode()]); |
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} |
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throw new ExchangeRateNotFoundException($sourceCurrency, $targetCurrency); |
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} |
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} |
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bpolaszek /
currency
