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<?php |
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namespace Bobbyshaw\WatsonVisualRecognition\Message; |
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use GuzzleHttp\Exception\ClientException; |
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use Bobbyshaw\WatsonVisualRecognition\Exceptions\AuthException; |
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use GuzzleHttp\Psr7\MultipartStream; |
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use GuzzleHttp\Psr7\Request; |
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/** |
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* Class ClassifyRequest |
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* @package Bobbyshaw\WatsonVisualRecognition\Message |
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*/ |
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class ClassifyRequest extends AbstractRequest |
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{ |
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const CLASSIFY_PATH = 'classify/'; |
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const ALLOWED_FILE_TYPES = ['.gif', '.jpg', '.png', '.zip']; |
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/** |
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* Get parameters for classify request |
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* |
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* @return array |
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* |
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* ['images_file', 'classifier_ids'] |
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* |
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*/ |
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public function getData() |
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{ |
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$data = parent::getData(); |
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$data['images_file'] = $this->getImagesFile(); |
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if ($classifierIds = $this->getClassifierIds()) { |
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$data['classifier_ids'] = $classifierIds; |
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} |
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return $data; |
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} |
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/** |
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* Send Classify HTTP request |
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* |
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* @param array $data - array['images_file', 'classifier_ids'] |
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* @return ClassifyResponse |
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* @throws AuthException |
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* @throws \Exception |
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*/ |
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public function sendData($data) |
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{ |
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if (!in_array(substr($data['images_file'], -4), static::ALLOWED_FILE_TYPES)) { |
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throw new \InvalidArgumentException( |
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'Image file needs to be one of the following types: ' . implode(', ', static::ALLOWED_FILE_TYPES) |
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); |
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} |
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$params = [ |
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[ |
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'name' => 'images_file', |
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'contents' => fopen($data['images_file'], 'r'), |
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'filename' => $data['images_file'] |
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] |
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]; |
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if (isset($data['classifier_ids'])) { |
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if (is_array($data['classifier_ids'])) { |
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$classifierIdParams = []; |
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foreach ($data['classifier_ids'] as $id) { |
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$classifierIdParams[] = ['classifier_id' => $id]; |
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} |
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$params[] = [ |
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'name' => 'classifier_ids', |
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'contents' => json_encode(['classifiers' => $classifierIdParams]) |
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]; |
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} else { |
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throw new \InvalidArgumentException('Classifier IDs must be array'); |
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} |
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} |
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$multipartStream = new MultipartStream($params); |
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$request = new Request( |
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'POST', |
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$this->getApiUrl(static::CLASSIFY_PATH) . '?' . http_build_query(['version' => $data['version']]), |
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['Authorization' => 'Basic ' . base64_encode($data['username'] . ':' . $data['password'])], |
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$multipartStream |
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); |
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try { |
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$response = $this->httpClient->send($request); |
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if ($response->getStatusCode() != 200) { |
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throw new \Exception($response->getBody()->getContents(), $response->getStatusCode()); |
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} |
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} catch (ClientException $e) { |
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if ($e->getCode() == 401) { |
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throw new AuthException('Invalid credentials provided'); |
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} elseif ($e->getCode() == 415) { |
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throw new \InvalidArgumentException('Unsupported image type'); |
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} else { |
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throw $e; |
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} |
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} |
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return $this->response = new ClassifyResponse($this, $response->getBody()); |
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} |
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} |
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bobbyshaw /
watson-visual-recognition-php
