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<?php |
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namespace BrainExe\Core\Application; |
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use BrainExe\Annotations\Annotations\Inject; |
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use BrainExe\Annotations\Annotations\Service; |
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use BrainExe\Core\Middleware\MiddlewareInterface; |
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use Exception; |
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use Symfony\Component\HttpFoundation\JsonResponse; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\HttpKernelInterface; |
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/** |
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* @Service(public=true) |
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*/ |
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class AppKernel implements HttpKernelInterface |
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{ |
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/** |
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* @var SerializedRouteCollection |
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*/ |
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private $routes; |
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/** |
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* @var ControllerResolver |
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*/ |
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private $resolver; |
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/** |
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* @var MiddlewareInterface[] |
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*/ |
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private $middlewares; |
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/** |
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* @var UrlMatcher |
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*/ |
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private $urlMatcher; |
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/** |
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* @Inject({ |
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* "@ControllerResolver", |
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* "@Core.RouteCollection", |
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* "@UrlMatcher", |
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* null |
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* }) |
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* @param ControllerResolver $resolver |
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* @param SerializedRouteCollection $routes |
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* @param UrlMatcher $urlMatcher |
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* @param MiddlewareInterface[] $middlewares |
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*/ |
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public function __construct( |
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ControllerResolver $resolver, |
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SerializedRouteCollection $routes, |
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UrlMatcher $urlMatcher, |
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array $middlewares |
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) { |
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$this->resolver = $resolver; |
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$this->routes = $routes; |
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$this->urlMatcher = $urlMatcher; |
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$this->middlewares = $middlewares; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = true) |
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{ |
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$response = null; |
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try { |
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$response = $this->handleRequest($request); |
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} catch (Exception $exception) { |
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$response = $this->applyExceptionMiddleware($request, $exception); |
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} |
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$response = $this->prepareResponse($response); |
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$this->applyResponseMiddleware($request, $response); |
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return $response; |
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} |
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/** |
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* @param Request $request |
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* @return Response|mixed |
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*/ |
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private function handleRequest(Request $request) |
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{ |
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// match route and set attributes in request object |
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$attributes = $this->urlMatcher->match($request); |
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$request->attributes->replace($attributes); |
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$routeName = $attributes['_route']; |
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$route = $this->routes->get($routeName); |
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foreach ($this->middlewares as $middleware) { |
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$response = $middleware->processRequest($request, $route); |
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if ($response) { |
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// e.g. RedirectResponse or rendered error page |
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return $response; |
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} |
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} |
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/** @var callable $callable */ |
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$callable = $this->resolver->getController($request); |
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$arguments = $this->resolver->getArguments($request, $callable); |
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return $callable(...$arguments); |
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} |
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/** |
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* @param Response|mixed $response |
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* @return Response |
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*/ |
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private function prepareResponse($response) |
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{ |
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if (!$response instanceof Response) { |
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return new JsonResponse($response); |
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} |
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return $response; |
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} |
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/** |
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* @param Request $request |
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* @param Response $response |
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*/ |
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protected function applyResponseMiddleware(Request $request, Response $response) |
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{ |
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$middlewareIdx = count($this->middlewares) - 1; |
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for ($i = $middlewareIdx; $i >= 0; $i--) { |
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$middleware = $this->middlewares[$i]; |
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$middleware->processResponse($request, $response); |
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} |
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} |
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/** |
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* @param Request $request |
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* @param Exception $exception |
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* @return Response|null |
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*/ |
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protected function applyExceptionMiddleware(Request $request, Exception $exception) |
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{ |
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foreach ($this->middlewares as $middleware) { |
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$response = $middleware->processException($request, $exception); |
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if ($response !== null) { |
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return $response; |
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} |
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} |
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return null; |
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} |
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} |
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brainexe /
core
