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<?php |
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namespace League\Route\Strategy; |
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use \Exception; |
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use League\Route\Http\Exception\MethodNotAllowedException; |
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use League\Route\Http\Exception\NotFoundException; |
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use League\Route\Http\Exception as HttpException; |
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use League\Route\Route; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use RuntimeException; |
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class JsonStrategy implements StrategyInterface |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getCallable(Route $route, array $vars) |
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{ |
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return function (ServerRequestInterface $request, ResponseInterface $response, callable $next) use ($route, $vars) { |
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$return = call_user_func_array($route->getCallable(), [$request, $response, $vars]); |
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if (! $return instanceof ResponseInterface) { |
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throw new RuntimeException( |
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'Route callables must return an instance of (Psr\Http\Message\ResponseInterface)' |
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); |
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} |
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$response = $return; |
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$response = $next($request, $response); |
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if (! $response->hasHeader('content-type')) { |
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return $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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/** |
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* {@inheritdoc} |
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*/ |
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public function getNotFoundDecorator(NotFoundException $exception) |
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{ |
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return function (ServerRequestInterface $request, ResponseInterface $response) use ($exception) { |
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return $exception->buildJsonResponse($response); |
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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 getMethodNotAllowedDecorator(MethodNotAllowedException $exception) |
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{ |
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return function (ServerRequestInterface $request, ResponseInterface $response) use ($exception) { |
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return $exception->buildJsonResponse($response); |
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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 getExceptionDecorator(Exception $exception) |
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{ |
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return function (ServerRequestInterface $request, ResponseInterface $response) use ($exception) { |
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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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