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<?php |
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|
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namespace PayPalHttp; |
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|
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use PayPalHttp\Serializer\Form; |
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use PayPalHttp\Serializer\Json; |
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use PayPalHttp\Serializer\Multipart; |
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use PayPalHttp\Serializer\Text; |
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|
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/** |
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* Class Encoder |
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* @package PayPalHttp |
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* |
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* Encoding class for serializing and deserializing request/response. |
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*/ |
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class Encoder |
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{ |
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private $serializers = []; |
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|
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function __construct() |
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{ |
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$this->serializers[] = new Json(); |
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$this->serializers[] = new Text(); |
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$this->serializers[] = new Multipart(); |
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$this->serializers[] = new Form(); |
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} |
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|
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|
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|
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public function serializeRequest(HttpRequest $request) |
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{ |
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if (!array_key_exists('content-type', $request->headers)) { |
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$message = "HttpRequest does not have Content-Type header set"; |
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echo $message; |
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throw new \Exception($message); |
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} |
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|
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$contentType = $request->headers['content-type']; |
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/** @var Serializer $serializer */ |
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$serializer = $this->serializer($contentType); |
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|
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if (is_null($serializer)) { |
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$message = sprintf("Unable to serialize request with Content-Type: %s. Supported encodings are: %s", $contentType, implode(", ", $this->supportedEncodings())); |
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echo $message; |
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throw new \Exception($message); |
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} |
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|
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if (!(is_string($request->body) || is_array($request->body))) { |
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$message = "Body must be either string or array"; |
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echo $message; |
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throw new \Exception($message); |
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} |
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|
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$serialized = $serializer->encode($request); |
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|
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if (array_key_exists("content-encoding", $request->headers) && $request->headers["content-encoding"] === "gzip") { |
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$serialized = gzencode($serialized); |
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} |
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return $serialized; |
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} |
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|
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|
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public function deserializeResponse($responseBody, $headers) |
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{ |
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|
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if (!array_key_exists('content-type', $headers)) { |
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$message = "HTTP response does not have Content-Type header set"; |
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echo $message; |
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throw new \Exception($message); |
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} |
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|
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$contentType = $headers['content-type']; |
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$contentType = strtolower($contentType); |
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/** @var Serializer $serializer */ |
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$serializer = $this->serializer($contentType); |
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|
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if (is_null($serializer)) { |
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throw new \Exception(sprintf("Unable to deserialize response with Content-Type: %s. Supported encodings are: %s", $contentType, implode(", ", $this->supportedEncodings()))); |
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} |
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|
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if (array_key_exists("content-encoding", $headers) && $headers["content-encoding"] === "gzip") { |
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$responseBody = gzdecode($responseBody); |
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} |
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|
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return $serializer->decode($responseBody); |
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} |
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|
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private function serializer($contentType) |
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{ |
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/** @var Serializer $serializer */ |
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foreach ($this->serializers as $serializer) { |
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try { |
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if (preg_match($serializer->contentType(), $contentType) == 1) { |
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return $serializer; |
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} |
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} catch (\Exception $ex) { |
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$message = sprintf("Error while checking content type of %s: %s", get_class($serializer), $ex->getMessage()); |
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echo $message; |
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throw new \Exception($message, $ex->getCode(), $ex); |
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} |
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} |
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|
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return NULL; |
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} |
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|
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private function supportedEncodings() |
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{ |
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$values = []; |
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/** @var Serializer $serializer */ |
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foreach ($this->serializers as $serializer) { |
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$values[] = $serializer->contentType(); |
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} |
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return $values; |
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} |
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} |
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|
