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<?php |
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namespace WordSelector\Proxy; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\Exception\BadResponseException; |
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use GuzzleHttp\Exception\ClientException; |
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use ProxyManager\Factory\RemoteObject\AdapterInterface; |
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use WordSelector\Entity\Word; |
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use WordSelector\WordSelector; |
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class WordSelectorProxyAdapter implements AdapterInterface |
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{ |
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const GET_RANDOM_WORD_METHOD = 'getRandomWord'; |
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const LENGTH_OPTION = 'length'; |
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const LANG_OPTION = 'lang'; |
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const COMPLEXITY_OPTION = 'complexity'; |
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const WORD_RESPONSE = 'word'; |
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const LANG_RESPONSE = 'lang'; |
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const COMPLEXITY_RESPONSE = 'complexity'; |
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const ERROR_RESPONSE = 'error'; |
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const API_ENDPOINT = '/random'; |
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const HTTP_METHOD = 'GET'; |
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/** |
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* @var Client |
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*/ |
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private $client; |
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/** |
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* Construct |
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* |
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* @param Client $client |
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*/ |
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public function __construct(Client $client) |
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{ |
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$this->client = $client; |
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} |
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/** |
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* Call remote object |
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* |
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* @param string $wrappedClass |
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* @param string $method |
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* @param array $params |
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* @return string |
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*/ |
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public function call($wrappedClass, $method, array $params = []) |
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{ |
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if ($wrappedClass !== WordSelector::class) { |
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throw new \InvalidArgumentException('Cannot call this class'); |
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} |
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if ($method !== self::GET_RANDOM_WORD_METHOD) { |
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throw new \InvalidArgumentException('Cannot call this method'); |
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} |
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if (count($params) !== 3) { |
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throw new \InvalidArgumentException('Cannot call this method with the given parameters'); |
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} |
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$options = [ |
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self::LENGTH_OPTION => $params[0], |
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self::LANG_OPTION => $params[1], |
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self::COMPLEXITY_OPTION => $params[2] |
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]; |
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try { |
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$response = $this->client->request( |
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self::HTTP_METHOD, |
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self::API_ENDPOINT . '?' . http_build_query($options) |
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); |
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$decodedJson = json_decode((string) $response->getBody()); |
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return new Word( |
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$decodedJson->{self::WORD_RESPONSE}, |
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$decodedJson->{self::LANG_RESPONSE}, |
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$decodedJson->{self::COMPLEXITY_RESPONSE} |
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); |
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} catch (ClientException $e) { |
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$decodedJson = json_decode((string) $e->getResponse()->getBody()); |
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throw new \InvalidArgumentException($decodedJson->{self::ERROR_RESPONSE}); |
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} catch (BadResponseException $e) { |
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$exceptionBody = (string) $e->getResponse()->getBody(); |
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throw new \RuntimeException($exceptionBody); |
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} |
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} |
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} |
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