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<?php |
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declare(strict_types=1); |
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namespace Saikootau\ApiBundle\Event\Listener; |
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use Saikootau\ApiBundle\Http\ResourceResponse; |
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use Saikootau\ApiBundle\MediaType\Exception\NonNegotiableMediaTypeException; |
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use Saikootau\ApiBundle\MediaType\MediaTypeNegotiator; |
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use Saikootau\ApiBundle\MediaType\MediaTypes; |
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use Saikootau\ApiBundle\Serializer\Serializer; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent; |
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use Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException; |
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class ResourceResponseListener |
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{ |
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private $defaultContentType; |
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private $mediaTypeNegotiator; |
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public function __construct(MediaTypeNegotiator $mediaTypeNegotiator, string $defaultContentType) |
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{ |
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$this->mediaTypeNegotiator = $mediaTypeNegotiator; |
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$this->defaultContentType = $defaultContentType; |
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} |
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public function onKernelView(GetResponseForControllerResultEvent $event): void |
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{ |
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$controllerResult = $event->getControllerResult(); |
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if ($controllerResult instanceof Response) { |
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return; |
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} |
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$serializer = $this->getSerializer($event->getRequest()); |
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$body = ''; |
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if (null !== $controllerResult) { |
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$body = $serializer->serialize($this->getResource($controllerResult)); |
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} |
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$event->setResponse(new Response( |
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$body, |
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$this->getStatusCode($event->getRequest(), $controllerResult), |
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$this->getHeaders($controllerResult, $serializer->getContentType()) |
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)); |
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} |
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/** |
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* Get the actual resource from the controller result. |
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* |
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* @param object $controllerResult |
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* |
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* @return object |
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*/ |
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private function getResource(object $controllerResult): object |
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{ |
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if ($controllerResult instanceof ResourceResponse) { |
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return $controllerResult->getResource(); |
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} |
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return $controllerResult; |
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} |
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/** |
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* Get the status code to return from the controller result. |
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* Defaults to 202 for POST, PUT and 200 for every other method. |
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* |
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* @param Request $request |
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* @param object|null $controllerResult |
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* |
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* @return int |
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*/ |
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private function getStatusCode(Request $request, ?object $controllerResult): int |
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{ |
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if ($controllerResult instanceof ResourceResponse) { |
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return $controllerResult->getStatusCode(); |
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} |
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return in_array($request->getMethod(), ['POST', 'PUT']) ? Response::HTTP_ACCEPTED : Response::HTTP_OK; |
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} |
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/** |
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* Generates an array of headers for the given controller result. |
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* |
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* @param object|null $controllerResult |
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* @param string $contentType |
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* |
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* @return array |
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*/ |
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private function getHeaders(?object $controllerResult, string $contentType): array |
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{ |
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$headers = ['Content-Type' => $contentType]; |
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if ($controllerResult instanceof ResourceResponse) { |
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$headers = array_merge($controllerResult->getHeaders(), $headers); |
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} |
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return $headers; |
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} |
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/** |
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* Get a matching serializer for the given request's acceptable content types. |
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* |
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* @param Request $request |
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* |
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* @return Serializer |
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* |
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* @throws NotAcceptableHttpException |
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*/ |
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protected function getSerializer(Request $request): Serializer |
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{ |
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try { |
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/** @var Serializer $serializer */ |
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$serializer = $this->mediaTypeNegotiator->negotiate(...$this->getRequestAcceptableContentTypes($request)); |
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} catch (NonNegotiableMediaTypeException $exception) { |
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throw new NotAcceptableHttpException( |
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sprintf( |
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'Deliverable content types are: %s', |
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implode(', ', $this->mediaTypeNegotiator->getSupportedMediaTypes()) |
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) |
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); |
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} |
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return $serializer; |
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} |
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/** |
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* Returns an array of acceptable content types for the given request. |
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* |
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* @param Request $request |
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* |
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* @return string[] |
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*/ |
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private function getRequestAcceptableContentTypes(Request $request): array |
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{ |
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$acceptableContentTypes = $request->getAcceptableContentTypes(); |
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if (false !== ($anyIndex = array_search(MediaTypes::TYPE_APPLICATION_ANY, $acceptableContentTypes))) { |
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$acceptableContentTypes[$anyIndex] = $this->defaultContentType; |
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} |
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return $acceptableContentTypes; |
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} |
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} |
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hikaru-shindo /
api-bundle
