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<?php |
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declare(strict_types=1); |
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namespace League\Route\Strategy; |
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use JsonSerializable; |
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use League\Route\Http; |
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use League\Route\Http\Exception\{MethodNotAllowedException, NotFoundException}; |
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use League\Route\Route; |
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use League\Route\{ContainerAwareInterface, ContainerAwareTrait}; |
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use Psr\Http\Message\{ResponseFactoryInterface, ResponseInterface, ServerRequestInterface}; |
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use Psr\Http\Server\{MiddlewareInterface, RequestHandlerInterface}; |
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use Throwable; |
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class JsonStrategy extends AbstractStrategy implements ContainerAwareInterface, OptionsHandlerInterface |
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{ |
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use ContainerAwareTrait; |
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/** |
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* @var ResponseFactoryInterface |
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*/ |
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protected $responseFactory; |
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/** |
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* @var int |
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*/ |
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protected $jsonFlags; |
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public function __construct(ResponseFactoryInterface $responseFactory, int $jsonFlags = 0) |
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{ |
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$this->responseFactory = $responseFactory; |
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$this->jsonFlags = $jsonFlags; |
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$this->addResponseDecorator(static function (ResponseInterface $response): ResponseInterface { |
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if (false === $response->hasHeader('content-type')) { |
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$response = $response->withHeader('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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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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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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public function getOptionsCallable(array $methods): callable |
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{ |
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return function (ServerRequestInterface $request) use ($methods): ResponseInterface { |
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$methods = implode(', ', $methods); |
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$response = $this->responseFactory->createResponse(); |
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$response = $response->withHeader('allow', $methods); |
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return $response->withHeader('access-control-allow-methods', $methods); |
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}; |
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} |
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public function getThrowableHandler(): MiddlewareInterface |
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{ |
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return new class ($this->responseFactory->createResponse()) 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 (Throwable $exception) { |
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$response = $this->response; |
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if ($exception instanceof Http\Exception) { |
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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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public function invokeRouteCallable(Route $route, ServerRequestInterface $request): ResponseInterface |
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{ |
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$controller = $route->getCallable($this->getContainer()); |
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$response = $controller($request, $route->getVars()); |
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if ($this->isJsonSerializable($response)) { |
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$body = json_encode($response, $this->jsonFlags); |
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$response = $this->responseFactory->createResponse(); |
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$response->getBody()->write($body); |
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} |
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return $this->decorateResponse($response); |
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} |
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protected function buildJsonResponseMiddleware(Http\Exception $exception): MiddlewareInterface |
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{ |
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return new class ($this->responseFactory->createResponse(), $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, Http\Exception $exception) |
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{ |
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$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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protected function isJsonSerializable($response): bool |
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{ |
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if ($response instanceof ResponseInterface) { |
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return false; |
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} |
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return (is_array($response) || is_object($response) || $response instanceof JsonSerializable); |
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} |
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} |
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thephpleague /
route
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.