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<?php |
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namespace Tgallice\Wit; |
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use GuzzleHttp\Client as HttpClient; |
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use GuzzleHttp\RequestOptions; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Log\LoggerInterface; |
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use Tgallice\Wit\Exception\BadResponseException; |
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class Client |
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{ |
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/** |
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* API base uri |
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*/ |
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const API_BASE_URI = 'https://api.wit.ai/'; |
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/* |
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* API Version |
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*/ |
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const API_VERSION = '20160330'; |
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/** |
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* Request default timeout |
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*/ |
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const DEFAULT_TIMEOUT = 5; |
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/** |
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* @var HTTP client |
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*/ |
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private $client; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @var ResponseInterface|null |
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*/ |
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private $lastResponse; |
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/** |
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* @var string Wit app token |
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*/ |
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private $accessToken; |
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public function __construct($accessToken, $httpClient = null, LoggerInterface $logger = null) |
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{ |
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$this->accessToken = $accessToken; |
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$this->client = $httpClient ?: new HttpClient([ |
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'base_uri' => self::API_BASE_URI, |
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'timeout' => self::DEFAULT_TIMEOUT, |
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'connect_timeout' => self::DEFAULT_TIMEOUT, |
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]); |
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$this->logger = $logger; |
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} |
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/** |
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* @param string $method |
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* @param string $uri |
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* @param array $query |
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* @param mixed $content |
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* |
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* @return ResponseInterface |
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*/ |
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public function send($method, $uri, array $query = [], $content = null) |
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{ |
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$options = [ |
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RequestOptions::QUERY => $query, |
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RequestOptions::HEADERS => $this->getDefaultHeaders() |
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]; |
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if (!empty($content)) { |
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$type = is_array($content) || $content instanceof \JsonSerializable ? RequestOptions::JSON : RequestOptions::BODY; |
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$options[$type] = $content; |
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} |
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$this->lastResponse = $this->client->request($method, $uri, $options); |
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$this->validateResponse($this->lastResponse); |
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return $this->lastResponse; |
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} |
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/** |
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* Get the last response from the API |
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* |
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* @return null|ResponseInterface |
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*/ |
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public function getLastResponse() |
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{ |
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return $this->lastResponse; |
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} |
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public function getClient() |
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{ |
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return $this->client; |
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} |
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/** |
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* Get the defaults headers like the Authorization field |
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* |
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* @return array |
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*/ |
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protected function getDefaultHeaders() |
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{ |
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return [ |
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'Authorization' => 'Bearer '.$this->accessToken, |
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// Used the accept field is needed to fix the API version and avoid BC break from the API |
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'Accept' => 'application/vnd.wit.'.self::API_VERSION.'+json', |
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]; |
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} |
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/** |
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* @param ResponseInterface $response |
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* |
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* @return bool |
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* |
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* @throws BadResponseException |
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*/ |
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protected function validateResponse(ResponseInterface $response) |
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{ |
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if ($response->getStatusCode() !== 200) { |
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$message = empty($response->getReasonPhrase()) ? 'Bad response status code' : $response->getReasonPhrase(); |
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throw new BadResponseException($message, $response); |
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} |
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return true; |
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} |
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} |
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tgallice /
wit-php
