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<?php |
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namespace App\Middleware; |
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use App\Renderer\JsonRenderer; |
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use DomainException; |
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use Fig\Http\Message\StatusCodeInterface; |
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use InvalidArgumentException; |
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use Psr\Http\Message\ResponseFactoryInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Psr\Log\LoggerInterface; |
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use Slim\Exception\HttpException; |
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use Throwable; |
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final class ExceptionMiddleware implements MiddlewareInterface |
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{ |
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private ResponseFactoryInterface $responseFactory; |
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private JsonRenderer $renderer; |
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private ?LoggerInterface $logger; |
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private bool $displayErrorDetails; |
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public function __construct( |
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ResponseFactoryInterface $responseFactory, |
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JsonRenderer $jsonRenderer, |
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LoggerInterface $logger = null, |
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bool $displayErrorDetails = false, |
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) { |
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$this->responseFactory = $responseFactory; |
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$this->renderer = $jsonRenderer; |
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$this->displayErrorDetails = $displayErrorDetails; |
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$this->logger = $logger; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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try { |
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return $handler->handle($request); |
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} catch (Throwable $exception) { |
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return $this->render($exception, $request); |
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} |
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} |
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private function render( |
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Throwable $exception, |
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ServerRequestInterface $request, |
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): ResponseInterface { |
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$httpStatusCode = $this->getHttpStatusCode($exception); |
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$response = $this->responseFactory->createResponse($httpStatusCode); |
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// Content negotiation |
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if (str_contains($request->getHeaderLine('Accept'), 'application/json')) { |
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$response = $response->withAddedHeader('Content-Type', 'application/json'); |
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// JSON |
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return $this->renderJson($exception, $response); |
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} |
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// HTML |
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return $this->renderHtml($response, $exception); |
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} |
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public function renderJson(Throwable $exception, ResponseInterface $response): ResponseInterface |
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{ |
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$data = [ |
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'error' => [ |
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'message' => $exception->getMessage(), |
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], |
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]; |
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return $this->renderer->json($response, $data); |
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} |
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public function renderHtml(ResponseInterface $response, Throwable $exception): ResponseInterface |
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{ |
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$response = $response->withAddedHeader('Content-Type', 'text/html'); |
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$message = sprintf( |
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"\n<br>Error %s (%s)\n<br>Message: %s\n<br>", |
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$this->html($response->getStatusCode()), |
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$this->html($response->getReasonPhrase()), |
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$this->html($exception->getMessage()), |
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); |
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if ($this->displayErrorDetails) { |
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$message .= sprintf( |
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'File: %s, Line: %s', |
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$this->html($exception->getFile()), |
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$this->html($exception->getLine()) |
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); |
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} |
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$response->getBody()->write($message); |
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return $response; |
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} |
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private function getHttpStatusCode(Throwable $exception): int |
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{ |
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$statusCode = StatusCodeInterface::STATUS_INTERNAL_SERVER_ERROR; |
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if ($exception instanceof HttpException) { |
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$statusCode = $exception->getCode(); |
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} |
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if ($exception instanceof DomainException || $exception instanceof InvalidArgumentException) { |
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$statusCode = StatusCodeInterface::STATUS_BAD_REQUEST; |
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} |
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return $statusCode; |
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} |
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private function html(string $text): string |
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{ |
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return htmlspecialchars($text, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'); |
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} |
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} |
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odan /
slim4-skeleton
