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<?php |
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/* |
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* This file is part of the MiddlewareBundle |
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* |
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* (c) Indra Gunawan <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Indragunawan\MiddlewareBundle\EventSubscriber; |
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use Doctrine\Common\Annotations\Reader; |
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use Doctrine\Common\Util\ClassUtils; |
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use Indragunawan\MiddlewareBundle\Annotation\AfterFilter; |
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use Indragunawan\MiddlewareBundle\Annotation\BeforeFilter; |
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use Indragunawan\MiddlewareBundle\Middleware; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpKernel\Event\FilterControllerEvent; |
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use Symfony\Component\HttpKernel\Event\FilterResponseEvent; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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/** |
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* @author Indra Gunawan <[email protected]> |
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*/ |
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final class FilterSubscriber implements EventSubscriberInterface |
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{ |
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/** |
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* @var Reader |
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*/ |
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private $reader; |
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/** |
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* @var Middleware |
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*/ |
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private $middleware; |
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public function __construct(Reader $reader, Middleware $middleware) |
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{ |
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$this->reader = $reader; |
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$this->middleware = $middleware; |
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} |
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/** |
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* @param FilterControllerEvent $event |
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*/ |
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public function onKernelController(FilterControllerEvent $event) |
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{ |
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$controller = $event->getController(); |
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if (!\is_array($controller) && method_exists($controller, '__invoke')) { |
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$controller = [$controller, '__invoke']; |
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} |
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if (!\is_array($controller)) { |
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return; |
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} |
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$className = ClassUtils::getClass($controller[0]); |
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$filters = $this->getClassAnnotations($className, $controller[1], BeforeFilter::class); |
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$middlewares = $this->middleware->getMiddlewares('before_filter', $filters); |
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foreach ($middlewares as $middleware) { |
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$middleware->onBeforeFilter($event->getRequest(), [$className, $controller[1]], $event->getRequestType()); |
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} |
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} |
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/** |
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* @param FilterResponseEvent $event |
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*/ |
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public function onKernelResponse(FilterResponseEvent $event) |
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{ |
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// in request attributes '_controller' we trust |
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$controller = $event->getRequest()->attributes->get('_controller'); |
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// $controller value should like 'App\Controller\HomepageController::index' |
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$controller = explode('::', $controller); |
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if (!\is_array($controller) || 2 !== \count($controller) || !class_exists($controller[0])) { |
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return; |
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} |
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$filters = $this->getClassAnnotations($controller[0], $controller[1], AfterFilter::class); |
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$middlewares = $this->middleware->getMiddlewares('after_filter', $filters); |
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foreach ($middlewares as $middleware) { |
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$middleware->onAfterFilter($event->getRequest(), $event->getResponse(), $controller, $event->getRequestType()); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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KernelEvents::CONTROLLER => ['onKernelController', -255], //expect priority -255 is the last |
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KernelEvents::RESPONSE => ['onKernelResponse', 255], //expect priority 255 is the first |
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]; |
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} |
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/** |
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* @param string $className |
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* @param string $method |
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* @param string $annotationClass |
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* |
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* @return array |
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*/ |
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private function getClassAnnotations(string $className, string $method, string $annotationClass): array |
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{ |
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$filters = []; |
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$rejectedFilters = []; |
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$classAnnotations = $this->reader->getClassAnnotations(new \ReflectionClass($className)); |
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foreach ($classAnnotations as $annotation) { |
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if ($annotation instanceof $annotationClass) { |
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if ($annotation->isSupportsMethod($method)) { |
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$filters = array_merge($filters, array_diff($annotation->getNames(), $rejectedFilters)); |
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} else { |
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$rejectedFilters = array_merge($rejectedFilters, $annotation->getNames()); |
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} |
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} |
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} |
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return array_unique($filters); |
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} |
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} |
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IndraGunawan /
middleware-bundle
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