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<?php
namespace App\Router;
use App\Errors\ErrorCode;
use App\Errors\ErrorResponse;
use App\Errors\Exception;
use App\Singleton;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Exception\MethodNotAllowedException;
use Symfony\Component\Routing\Exception\ResourceNotFoundException;
use Symfony\Component\Routing\Loader\Configurator\RouteConfigurator;
use Symfony\Component\Routing\Matcher\UrlMatcher;
use Symfony\Component\Routing\RequestContext;
use Symfony\Component\Routing\RouteCollection;
class Router
{
use Singleton;
private RouteCollection $routes;
private RouteConfigurator $configurator;
public function __construct()
{
$this->routes = new RouteCollection();
$this->configurator = new RouteConfigurator($this->routes, $this->routes);
$this->addRoutes();
}
/**
* match the current url against the routes.
* also add preflight CORS headers on OPTIONS requests.
*/
public function run(): Response
{
$request = Request::createFromGlobals();
if ($request->isMethod("OPTIONS")) {
$response = new Response();
$response->headers->add([
"Access-Control-Allow-Origin" => "*",
"Access-Control-Allow-Methods" => "GET, POST, PUT, DELETE, OPTIONS, PATCH, HEAD",
"Access-Control-Allow-Headers" => "X-Requested-With, Content-Type, Authorization",
]);
return $response;
}
$context = new RequestContext();
$context->fromRequest($request);
try {
$matcher = new UrlMatcher($this->routes, $context);
$match = $matcher->matchRequest($request);
$class = $match["_controller"][0];
$method = $match["_controller"][1];
return (new $class)->$method();
} catch (Exception $exception) {
return ErrorResponse::fromException($exception);
} catch (ResourceNotFoundException $exception) {
return new ErrorResponse(ErrorCode::NOT_FOUND, "404", Response::HTTP_NOT_FOUND);
} catch (MethodNotAllowedException $exception) {
return new ErrorResponse(ErrorCode::FORBIDDEN, "403", Response::HTTP_FORBIDDEN);
} catch (\Exception $exception) {
return new ErrorResponse(
ErrorCode::UNKNOWN,
$exception->getMessage() ?: "Unknown error occured",
Response::HTTP_INTERNAL_SERVER_ERROR
);
}
}
/**
* add routes from the routes file
*/
private function addRoutes(): void
{
$routesClientServer = include_once(__DIR__ . "/routes_client_server.php");
$routesClientServer($this->configurator);
$routesServerServer = include_once(__DIR__ . "/routes_server_server.php");
$routesServerServer($this->configurator);
}
}
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