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<?php declare(strict_types=1); |
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namespace League\Route\Strategy; |
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use Exception; |
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use League\Route\{ContainerAwareInterface, ContainerAwareTrait}; |
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use League\Route\Http\Exception as HttpException; |
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use League\Route\Http\Exception\{MethodNotAllowedException, NotFoundException}; |
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use League\Route\Route; |
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use Psr\Http\Message\{ResponseInterface, ServerRequestInterface}; |
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use Psr\Http\Server\{MiddlewareInterface, RequestHandlerInterface}; |
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class JsonStrategy implements ContainerAwareInterface, StrategyInterface |
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{ |
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use ContainerAwareTrait; |
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/** |
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* @var callable |
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*/ |
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protected $responseFactory; |
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/** |
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* Construct. |
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* |
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* @param callable $responseFactory |
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*/ |
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public function __construct(callable $responseFactory) |
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{ |
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$this->responseFactory = $responseFactory; |
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} |
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/** |
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* Invoke the given factory to return a response. |
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* |
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* @return \Psr\Http\Message\ResponseInterface |
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*/ |
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protected function newResponse() : ResponseInterface |
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{ |
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$responseFactory = $this->responseFactory; |
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return $responseFactory(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function invokeRouteCallable(Route $route, ServerRequestInterface $request) : ResponseInterface |
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{ |
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$response = call_user_func_array($route->getCallable($this->getContainer()), [$request, $route->getVars()]); |
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if (is_array($response)) { |
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$body = json_encode($response); |
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$response = $this->newResponse(); |
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$response = $response->withStatus(200); |
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$response->getBody()->write($body); |
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} |
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if ($response instanceof ResponseInterface && ! $response->hasHeader('content-type')) { |
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$response->withAddedHeader('content-type', 'application/json'); |
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} |
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return $response; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getNotFoundDecorator(NotFoundException $exception) : MiddlewareInterface |
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{ |
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return $this->buildJsonResponseMiddleware($exception); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getMethodNotAllowedDecorator(MethodNotAllowedException $exception) : MiddlewareInterface |
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{ |
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return $this->buildJsonResponseMiddleware($exception); |
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} |
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/** |
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* Return a middleware that simply throws and exception. |
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* |
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* @param \Exception $exception |
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* |
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* @return \Psr\Http\Server\MiddlewareInterface |
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*/ |
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protected function buildJsonResponseMiddleware(HttpException $exception) : MiddlewareInterface |
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{ |
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return new class($this->newResponse(), $exception) implements MiddlewareInterface |
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{ |
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protected $response; |
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protected $exception; |
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public function __construct(ResponseInterface $response, HttpException $exception) |
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{ |
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$this->response = $response; |
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$this->exception = $exception; |
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} |
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public function process( |
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ServerRequestInterface $request, |
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RequestHandlerInterface $requestHandler |
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) : ResponseInterface { |
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return $this->exception->buildJsonResponse($this->response); |
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} |
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}; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getExceptionHandler() : MiddlewareInterface |
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{ |
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return new class($this->newResponse()) implements MiddlewareInterface |
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{ |
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protected $response; |
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public function __construct(ResponseInterface $response) |
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{ |
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$this->response = $response; |
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} |
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public function process( |
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ServerRequestInterface $request, |
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RequestHandlerInterface $requestHandler |
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) : ResponseInterface { |
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try { |
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return $requestHandler->handle($request); |
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} catch (Exception $exception) { |
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$response = $this->response; |
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if ($exception instanceof HttpException) { |
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return $exception->buildJsonResponse($response); |
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} |
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$response->getBody()->write(json_encode([ |
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'status_code' => 500, |
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'reason_phrase' => $exception->getMessage() |
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])); |
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$response = $response->withAddedHeader('content-type', 'application/json'); |
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return $response->withStatus(500, strtok($exception->getMessage(), "\n")); |
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} |
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} |
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}; |
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} |
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} |
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thephpleague /
route
