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<?php |
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namespace BenTools\Currency\Provider; |
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use BenTools\Currency\Cache\ArrayCache; |
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use BenTools\Currency\Model\CurrencyInterface; |
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use BenTools\Currency\Model\ExchangeRateInterface; |
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use DateTimeInterface; |
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use Psr\SimpleCache\CacheInterface; |
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final class PSR16CacheProvider implements ExchangeRateProviderInterface |
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{ |
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/** |
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* @var ExchangeRateProviderInterface |
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*/ |
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private $exchangeRateProvider; |
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/** |
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* @var CacheInterface |
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*/ |
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private $cache; |
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/** |
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* PSR16CacheProvider constructor. |
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* @param ExchangeRateProviderInterface $exchangeRateProvider |
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* @param CacheInterface|null $cache |
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*/ |
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public function __construct( |
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ExchangeRateProviderInterface $exchangeRateProvider, |
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CacheInterface $cache = null |
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) { |
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$this->exchangeRateProvider = $exchangeRateProvider; |
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$this->cache = $cache ?? new ArrayCache(); |
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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 $date = null): ExchangeRateInterface |
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{ |
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if ($this->cache->has($this->getKey($sourceCurrency, $targetCurrency, $date))) { |
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return $this->cache->get($this->getKey($sourceCurrency, $targetCurrency, $date)); |
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} |
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$exchangeRate = $this->exchangeRateProvider->getExchangeRate($sourceCurrency, $targetCurrency, $date); |
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$this->cache->set($this->getKey($sourceCurrency, $targetCurrency, $date), $exchangeRate); |
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return $exchangeRate; |
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} |
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/** |
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* @param CurrencyInterface $sourceCurrency |
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* @param CurrencyInterface $targetCurrency |
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* @param DateTimeInterface|null $date |
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* @return string |
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*/ |
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private function getKey(CurrencyInterface $sourceCurrency, CurrencyInterface $targetCurrency, DateTimeInterface $date = null): string |
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{ |
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if (null === $date) { |
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return sprintf('%s-%s', $sourceCurrency->getCode(), $targetCurrency->getCode()); |
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} |
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return sprintf('%s-%s-%s', $sourceCurrency->getCode(), $targetCurrency->getCode(), $date->format('U')); |
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} |
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} |
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bpolaszek /
currency
