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<?php
namespace NaiveMiddleware;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
class RequestHandler implements RequestHandlerInterface
{
public const STATUS_CODE = 500;
public const REASON_PHRASE = 'Missing middleware handling';
/**
* @var ResponseFactoryInterface
*/
private $response_factory;
* @var MiddlewareInterface[]
private $middlewares = [];
public function __construct(ResponseFactoryInterface $response_factory)
$this->response_factory = $response_factory;
}
public function addMiddleware(MiddlewareInterface $middleware): void
$this->middlewares[] = $middleware;
public function handle(ServerRequestInterface $request): ResponseInterface
$middleware = current($this->middlewares);
if ($middleware !== false) {
next($this->middlewares);
$response = $middleware->process($request, $this);
} else {
$response = $this->response_factory->createResponse(self::STATUS_CODE, self::REASON_PHRASE);
reset($this->middlewares);
return $response;
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