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<?php |
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/* |
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* This file is part of the ONGR package. |
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* |
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* (c) NFQ Technologies UAB <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ONGR\CurrencyExchangeBundle\Driver; |
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use GuzzleHttp\Client; |
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/** |
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* This class downloads exchange rates from http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml. |
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*/ |
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class EcbDriver implements CurrencyDriverInterface |
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{ |
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/** |
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* @var null|Client |
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*/ |
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private $httpClient; |
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/** |
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* @var string |
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*/ |
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private $url; |
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/** |
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* @param null|Client $httpClient |
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* @param string $url |
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*/ |
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public function __construct(Client $httpClient, $url) |
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{ |
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$this->httpClient = $httpClient; |
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$this->url = $url; |
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} |
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/** |
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* Downloads raw currency data. |
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* |
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* @return array |
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*/ |
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private function getRawData() |
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{ |
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$request = $this->httpClient->get($this->url); |
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try { |
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$xml = simplexml_load_string((string)$request->getBody(), 'SimpleXMLElement'); |
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} catch (\Exception $e) { |
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throw new \UnexpectedValueException('Got invalid response'); |
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} |
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return $xml; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getRates() |
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{ |
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$rates = []; |
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$response = $this->getRawData(); |
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$valid = isset($response) && isset($response->Cube->Cube->Cube); |
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if (!$valid) { |
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throw new \UnexpectedValueException('Got invalid response'); |
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} |
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$data = $response->xpath('//gesmes:Envelope/*[3]/*'); |
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foreach ($data[0]->children() as $child) { |
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$code = (string)$child->attributes()->currency; |
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$rate = (float)$child->attributes()->rate; |
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$rates[$code] = $rate; |
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} |
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return $rates; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getBaseCurrency() |
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{ |
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// Default base currency of The European Central Bank |
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return 'EUR'; |
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} |
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} |
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ongr-io /
CurrencyExchangeBundle
