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<?php |
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declare(strict_types=1); |
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namespace App\ExchangeRates\Provider; |
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use App\ExchangeRates\Exception\ServiceUnavailableException; |
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use GuzzleHttp\ClientInterface; |
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use GuzzleHttp\Exception\GuzzleException; |
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class Fixer implements ProviderInterface |
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{ |
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protected const REQUEST_METHOD = 'GET'; |
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/** |
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* @var string |
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*/ |
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protected $baseUri; |
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/** |
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* @var string |
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*/ |
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protected $token; |
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/** |
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* @var ClientInterface |
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*/ |
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protected $client; |
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public function __construct(string $baseUri, string $token, ClientInterface $client) |
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{ |
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$this->baseUri = $baseUri; |
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$this->token = $token; |
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$this->client = $client; |
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} |
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/** |
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* @param string $baseCurrency |
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* @param string $targetCurrency |
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* |
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* @return float |
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* |
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* @throws ServiceUnavailableException |
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*/ |
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public function getLatestExchangeRate(string $baseCurrency, string $targetCurrency): float |
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{ |
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$baseCurrency = strtoupper($baseCurrency); |
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$targetCurrency = strtoupper($targetCurrency); |
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if ($baseCurrency === $targetCurrency) { |
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return 1.0; |
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} |
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try { |
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$response = $this->client->request( |
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static::REQUEST_METHOD, |
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$this->baseUri, |
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[ |
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'query' => [ |
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'base' => $baseCurrency, |
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'access_key' => $this->token, |
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], |
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] |
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); |
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$responseAsStdObject = \GuzzleHttp\json_decode($response->getBody()); |
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} catch (GuzzleException $e) { |
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throw new ServiceUnavailableException('', 504, $e); |
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} |
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if (!property_exists($responseAsStdObject->rates, $targetCurrency)) { |
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throw new ServiceUnavailableException( |
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'We\'re currently experiencing some problems, please try again shortly or contact us.' |
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); |
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} |
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return (float) $responseAsStdObject->rates->{$targetCurrency}; |
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} |
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/** |
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* @return array |
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* |
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* @throws ServiceUnavailableException |
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*/ |
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public function getSupportedCurrencies(): array |
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{ |
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try { |
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$response = $this->client->request( |
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static::REQUEST_METHOD, |
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$this->baseUri, |
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[ |
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'query' => [ |
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'access_key' => $this->token, |
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], |
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] |
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); |
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$responseAsArray = \GuzzleHttp\json_decode($response->getBody(), true); |
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} catch (GuzzleException $e) { |
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throw new ServiceUnavailableException('', 504, $e); |
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} |
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if (empty($responseAsArray['rates'])) { |
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throw new ServiceUnavailableException( |
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'We\'re currently experiencing some problems, please try again shortly or contact us.' |
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); |
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} |
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return array_keys($responseAsArray['rates']); |
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} |
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} |
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dgreda /
ExchangeRatesApp
