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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\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 ResponseListener |
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{ |
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private $defaultContentType; |
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private $mediaTypeNegotiator; |
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private static $noContentMethods = [ |
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'HEAD', |
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]; |
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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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$body = ''; |
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if ($this->isContentAllowed($event->getRequest()->getMethod())) { |
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$body = $serializer->serialize($controllerResult); |
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} |
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$event->setResponse( |
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$this->createResponse( |
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$body, |
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Response::HTTP_OK, |
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$serializer->getContentType() |
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) |
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); |
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} |
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/** |
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* Checks if the response should contain any content. |
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* |
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* @param string $method |
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* |
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* @return bool |
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*/ |
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private function isContentAllowed(string $method): bool |
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{ |
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return !in_array($method, self::$noContentMethods); |
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} |
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/** |
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* Create a response for the given data. |
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* |
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* @param string $body |
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* @param int $status |
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* @param string $contentType |
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* |
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* @return Response |
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*/ |
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private function createResponse(string $body, int $status, string $contentType): Response |
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{ |
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return new Response( |
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$body, |
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$status, |
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['Content-Type' => $contentType] |
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); |
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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
