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<?php |
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namespace Ultraleet\CurrencyRates\Providers; |
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use Ultraleet\CurrencyRates\AbstractProvider; |
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use Ultraleet\CurrencyRates\Result; |
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use Ultraleet\CurrencyRates\Exceptions\ConnectionException; |
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use Ultraleet\CurrencyRates\Exceptions\ResponseException; |
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use GuzzleHttp\Client as GuzzleClient; |
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use DateTime; |
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use InvalidArgumentException; |
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use GuzzleHttp\Exception\TransferException; |
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class FixerProvider extends AbstractProvider |
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{ |
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protected $guzzle; |
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protected $url = "http://api.fixer.io"; |
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/** |
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* Class constructor. |
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* |
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* @param \GuzzleHttp\Client $guzzle |
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* @return void |
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*/ |
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public function __construct(GuzzleClient $guzzle) |
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{ |
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$this->guzzle = $guzzle; |
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} |
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/** |
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* Get latest currency exchange rates. |
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* |
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* @param string $base |
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* @param array $targets |
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* @return \Ultraleet\CurrencyRates\Contracts\Result |
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*/ |
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public function latest($base = 'EUR', $targets = []) |
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{ |
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return $this->query('latest', $base, $targets); |
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} |
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/** |
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* Get historical currency exchange rates. |
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* |
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* @param \DateTime $date |
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* @param string $base |
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* @param array $targets |
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* @return \Ultraleet\CurrencyRates\Contracts\Result |
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*/ |
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public function historical($date, $base = 'EUR', $targets = []) |
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{ |
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return $this->query($date->format('Y-m-d'), $base, $targets); |
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} |
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/** |
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* Get historical currency exchange rates. |
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* |
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* @param string $date 'latest' for latest, 'Y-m-d' date for historical. |
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* @param string $base |
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* @param array $targets |
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* @return \Ultraleet\CurrencyRates\Contracts\Result |
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*/ |
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protected function query($date, $base, $targets) |
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{ |
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$url = $this->url . '/' . $date; |
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$query = []; |
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// add base to query string |
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if ($base !== 'EUR') { |
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$query[] = 'base=' . $base; |
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} |
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// add symbols to query string |
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if (!empty($targets)) { |
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$query[] = 'symbols=' . implode(',', $targets); |
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} |
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// append query string to url |
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if (!empty($query)) { |
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$url .= '?' . implode('&', $query); |
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} |
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// query the API |
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try { |
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$response = $this->guzzle->request('GET', $url); |
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} catch (TransferException $e) { |
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throw new ConnectionException($e->getMessage()); |
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} |
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// process response |
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$response = json_decode($response->getBody(), true); |
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if (isset($response['rates']) && is_array($response['rates']) && |
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isset($response['base']) && isset($response['date'])) { |
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return new Result( |
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$response['base'], |
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new DateTime($response['date']), |
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$response['rates'] |
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); |
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} elseif (isset($response['error'])) { |
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throw new ResponseException($response['error']); |
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} else { |
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throw new ResponseException('Response body is malformed.'); |
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} |
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} |
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} |
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ultraleettech /
currency-rates
