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ResourceHandler.php
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ResourceHandler.php
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<?php
/**
* This file is part of the BEAR.MiddleWare package
*
* @license http://opensource.org/licenses/MIT MIT
*/
namespace BEAR\Middleware\Handler;
use BEAR\Middleware\Module\StreamRenderer;
use BEAR\Resource\RenderInterface;
use BEAR\Resource\ResourceInterface;
use BEAR\Resource\ResourceObject;
use BEAR\Sunday\Extension\Router\RouterInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface;
use Zend\Diactoros\Stream;
final class ResourceHandler
{
/**
* @var ResourceInterface
*/
private $resource;
/**
* @var RouterInterface
*/
private $router;
/**
* @var StreamRenderer
*/
private $render;
/**
* @param ResourceInterface $resource
* @param RouterInterface $router
* @param RenderInterface $render
*/
public function __construct(
ResourceInterface $resource,
RouterInterface $router,
RenderInterface $render
) {
$this->resource = $resource;
$this->router = $router;
$this->render = $render;
}
/**
* @inheritdoc
*/
public function __invoke(RequestInterface $request, Response $response, callable $next = null)
{
$response = $this->handle($request, $response);
return $next($request, $response);
}
/**
* @param RequestInterface $request
* @param Response $response
*
* @return Response
*/
public function handle(ServerRequestInterface $request, Response $response)
{
$server = $request->getServerParams();
$server['REQUEST_METHOD'] = $request->getMethod();
$server['REQUEST_URI'] = $request->getUri()->getPath();
$globals = [
'_GET' => $request->getQueryParams(),
'_POST' => $request->getParsedBody()
];
$req = $this->router->match($globals, $server);
$resourceObject = $this->resource->{$req->method}->uri($req->path)->withQuery($req->query)->eager->request();
$response = $this->toPsr7Response($response, $resourceObject);
return $response;
}
/**
* @param Response $response
* @param ResourceObject $resourceObject
*
* @return Response
*/
private function toPsr7Response(Response $response, ResourceObject $resourceObject)
{
$bodyString = (string) $resourceObject;
/** @var $response Response */
$response = $response->withStatus($resourceObject->code);
foreach ($resourceObject->headers as $name => $value) {
$response = $response->withHeader($name, $value);
}
$stream = $this->render->toStream($bodyString);
$response = $response->withBody(new Stream($stream));
return $response;
}
}