76 lines
2.3 KiB
PHP
76 lines
2.3 KiB
PHP
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<?php
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namespace Engelsystem\Middleware;
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use FastRoute\Dispatcher as FastRouteDispatcher;
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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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class RouteDispatcher implements MiddlewareInterface
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{
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/** @var FastRouteDispatcher */
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protected $dispatcher;
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/** @var ResponseInterface */
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protected $response;
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/** @var MiddlewareInterface|null */
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protected $notFound;
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/**
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* @param FastRouteDispatcher $dispatcher
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* @param ResponseInterface $response Default response
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* @param MiddlewareInterface|null $notFound Handles any requests if the route can't be found
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*/
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public function __construct(
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FastRouteDispatcher $dispatcher,
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ResponseInterface $response,
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MiddlewareInterface $notFound = null
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) {
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$this->dispatcher = $dispatcher;
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$this->response = $response;
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$this->notFound = $notFound;
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}
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/**
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* Process an incoming server request and return a response, optionally delegating
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* response creation to a handler.
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*
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* @param ServerRequestInterface $request
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* @param RequestHandlerInterface $handler
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* @return ResponseInterface
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*/
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
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{
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$route = $this->dispatcher->dispatch($request->getMethod(), urldecode($request->getUri()->getPath()));
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$status = $route[0];
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if ($status == FastRouteDispatcher::NOT_FOUND) {
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if ($this->notFound instanceof MiddlewareInterface) {
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return $this->notFound->process($request, $handler);
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}
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return $this->response->withStatus(404);
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}
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if ($status == FastRouteDispatcher::METHOD_NOT_ALLOWED) {
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$methods = $route[1];
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return $this->response
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->withStatus(405)
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->withHeader('Allow', implode(', ', $methods));
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}
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$routeHandler = $route[1];
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$request = $request->withAttribute('route-request-handler', $routeHandler);
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$vars = $route[2];
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foreach ($vars as $name => $value) {
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$request = $request->withAttribute($name, $value);
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}
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return $handler->handle($request);
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}
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}
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