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<?php |
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namespace Jenky\Hermes\Middleware; |
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use InvalidArgumentException; |
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use Jenky\Hermes\Contracts\ResponseHandler as ResponseHandlerInterface; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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class ResponseHandler |
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{ |
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/** |
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* The default response handler class name. |
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* |
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* @var string |
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*/ |
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protected $response; |
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/** |
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* Create a new handler instance. |
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* |
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* @param string|null $response |
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* @return void |
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*/ |
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public function __construct($response = null) |
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{ |
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$this->response = $response; |
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} |
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/** |
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* Handle the request. |
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* |
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* @param callable $handler |
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* @return callable |
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*/ |
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public function __invoke(callable $handler) |
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{ |
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return function (RequestInterface $request, array $options) use ($handler) { |
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return $handler($request, $options)->then(function (ResponseInterface $response) use ($options) { |
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return $this->createResponseHandler($response, $options); |
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}); |
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}; |
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} |
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/** |
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* Create response handler instance. |
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* |
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* @param \Psr\Http\Message\ResponseInterface $response |
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* @param array $options |
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* @return \Psr\Http\Message\ResponseInterface |
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*/ |
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protected function createResponseHandler(ResponseInterface $response, array $options): ResponseInterface |
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{ |
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$handler = $this->getResponseHandler( |
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$options['response_handler'] ?? $this->response |
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); |
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return $handler ? $handler::create($response) : $response; |
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} |
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/** |
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* Get the response handler class name. |
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* |
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* @param string $handler |
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* @return string|null |
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*/ |
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protected function getResponseHandler($handler) |
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{ |
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if ($handler && ! is_a($handler, ResponseHandlerInterface::class, true)) { |
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throw new InvalidArgumentException( |
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$handler.' must be an instance of '.ResponseHandlerInterface::class |
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); |
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} |
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return $handler; |
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} |
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} |
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