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<?php |
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declare(strict_types=1); |
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namespace HttpSoft\Router\Middleware; |
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use HttpSoft\Router\Route; |
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use HttpSoft\Router\RouteCollector; |
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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 function array_filter; |
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use function array_unique; |
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use function implode; |
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use function in_array; |
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use function is_string; |
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use function strtoupper; |
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final class RouteMatchMiddleware implements MiddlewareInterface |
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{ |
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/** |
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* @var RouteCollector |
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*/ |
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private RouteCollector $router; |
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/** |
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* @var ResponseFactoryInterface |
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*/ |
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private ResponseFactoryInterface $responseFactory; |
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/** |
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* @var string[] |
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*/ |
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private array $allowedMethods = []; |
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/** |
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* @param RouteCollector $router |
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* @param ResponseFactoryInterface $responseFactory |
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* @param array|string[] $allowedMethods common allowed request methods for all routes. |
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* @psalm-suppress MixedAssignment |
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*/ |
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public function __construct( |
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RouteCollector $router, |
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ResponseFactoryInterface $responseFactory, |
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array $allowedMethods = ['HEAD'] |
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) { |
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$this->router = $router; |
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$this->responseFactory = $responseFactory; |
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foreach ($allowedMethods as $allowedMethod) { |
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if (is_string($allowedMethod)) { |
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$this->allowedMethods[] = strtoupper($allowedMethod); |
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} |
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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 process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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if (!$route = $this->router->routes()->match($request, false)) { |
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return $handler->handle($request); |
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} |
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if (!$this->isAllowedMethods($request->getMethod()) && !$route->isAllowedMethod($request->getMethod())) { |
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return $this->getEmptyResponseWithAllowedMethods($route->getMethods()); |
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} |
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foreach ($route->getMatchedParameters() as $name => $value) { |
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$request = $request->withAttribute($name, $value); |
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} |
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return $handler->handle($request->withAttribute(Route::class, $route)); |
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} |
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/** |
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* @param string[] $methods |
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* @return ResponseInterface |
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*/ |
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private function getEmptyResponseWithAllowedMethods(array $methods): ResponseInterface |
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{ |
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foreach ($this->allowedMethods as $method) { |
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$methods[] = $method; |
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} |
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$methods = implode(', ', array_unique(array_filter($methods))); |
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return $this->responseFactory->createResponse(405)->withHeader('Allow', $methods); |
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} |
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/** |
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* @param string $method |
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* @return bool |
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*/ |
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private function isAllowedMethods(string $method): bool |
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{ |
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return ($this->allowedMethods !== [] && in_array(strtoupper($method), $this->allowedMethods, true)); |
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} |
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} |
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httpsoft /
http-router
