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|
<?php
namespace Engelsystem\Middleware;
use Engelsystem\Application;
use InvalidArgumentException;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
class RequestHandler implements MiddlewareInterface
{
use ResolvesMiddlewareTrait;
/** @var Application */
protected $container;
/**
* @param Application $container
*/
public function __construct(Application $container)
{
$this->container = $container;
}
/**
* Process an incoming server request and return a response, optionally delegating
* response creation to a handler.
*
* @param ServerRequestInterface $request
* @param RequestHandlerInterface $handler
* @return ResponseInterface
*/
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
{
$requestHandler = $request->getAttribute('route-request-handler');
$requestHandler = $this->resolveRequestHandler($requestHandler);
if ($requestHandler instanceof MiddlewareInterface) {
return $requestHandler->process($request, $handler);
}
if ($requestHandler instanceof RequestHandlerInterface) {
return $requestHandler->handle($request);
}
throw new InvalidArgumentException('Unable to process request handler of type ' . gettype($requestHandler));
}
/**
* @param string|callable|MiddlewareInterface|RequestHandlerInterface $handler
* @return MiddlewareInterface|RequestHandlerInterface
*/
protected function resolveRequestHandler($handler)
{
if (is_string($handler) && strpos($handler, '@') !== false) {
list($class, $method) = explode('@', $handler, 2);
if (!class_exists($class) && !$this->container->has($class)) {
$class = sprintf('Engelsystem\\Controllers\\%s', $class);
}
$handler = [$class, $method];
}
if (
is_array($handler)
&& is_string($handler[0])
&& (
class_exists($handler[0])
|| $this->container->has($handler[0])
)
) {
$handler[0] = $this->container->make($handler[0]);
}
return $this->resolveMiddleware($handler);
}
}
|
