use Eteona\Http\Message\ServerRequestFactory;
use Psr\Container\ContainerInterface;
use Eteona\Http\Server\CallableRequestHandler;
use Eteona\Http\Message\ResponseFactory;
use Eteona\Http\Server\LazyRequestHandler;
use Eteona\Http\Server\QueueableRequestHandler;

$request = (new ServerRequestFactory())->createServerRequest('GET', 'https://example.com/');

/** @var ContainerInterface  */
$container = /** A PSR-11 container implementation */;

// creates a response from a callback function.
$requestHandler = new CallableRequestHandler(function () {
    return (new ResponseFactory())->createResponse(400);
});
$response = $requestHandler->handle($request);

// creates a response using a PSR-11 container implementation.
$requestHandler = new LazyRequestHandler($container, Acme\FooHandler::class);
$response = $requestHandler->handle($request);

// creates a response from a fallback request handler and a queue of middlewares.
$requestHandler = new QueueableRequestHandler(new Acme\FooHandler());
$requestHandler->add(new Acme\FooMiddleware());
$response = $requestHandler->handle($request);