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<?php declare(strict_types = 1); |
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/** |
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* This file is part of the Simplex package. |
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* |
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* (c) Freddie Frantzen <[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 Simplex\HttpMiddleware; |
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use Psr\Container\ContainerInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Simplex\ContainerKeys; |
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use Simplex\Controller; |
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use Simplex\Routing\RouteParamsRegistry; |
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final class DispatchController |
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{ |
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/** @var RouteParamsRegistry */ |
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private $routeParamsRegistry; |
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/** @var ContainerInterface */ |
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private $container; |
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public function __construct(RouteParamsRegistry $routeParamsRegistry, ContainerInterface $container) |
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{ |
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$this->routeParamsRegistry = $routeParamsRegistry; |
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$this->container = $container; |
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} |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next) |
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{ |
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$controllerRouteParam = $this->routeParamsRegistry->getParameter(RouteParamsRegistry::CONTROLLER_KEY); |
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$controller = $this->getController($this->getControllerClass($controllerRouteParam)); |
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$this->injectControllerDependencies($controller); |
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$controller->setResponse($response); |
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$args = $this->resolveArgs( |
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$request, |
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$this->getControllerClass($controllerRouteParam), |
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$this->getControllerAction($controllerRouteParam) |
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); |
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$response = $this->invokeController( |
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$controller, |
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$this->getControllerAction($controllerRouteParam), |
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$args |
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); |
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return $next($request, $response); |
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} |
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private function getControllerClass(string $controllerRouteParam): string |
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{ |
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return explode('::', $controllerRouteParam)[0]; |
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} |
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private function getControllerAction(string $controllerRouteParam): string |
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{ |
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return explode('::', $controllerRouteParam)[1]; |
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} |
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private function getController(string $controllerClass): Controller |
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{ |
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return $this->container->get($controllerClass); |
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} |
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private function injectControllerDependencies($controller): void |
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{ |
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if (!$this->container->has(ContainerKeys::CONTROLLER_DEPENDENCIES)) { |
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return; |
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} |
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$map = $this->container->get(ContainerKeys::CONTROLLER_DEPENDENCIES); |
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foreach ($map as $controllerClass => $dependencies) { |
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if (!$controller instanceof $controllerClass) { |
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continue; |
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} |
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foreach ($dependencies as $setterName => $object) { |
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$controller->{'set' . ucfirst($setterName)}($object); |
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} |
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} |
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} |
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private function resolveArgs( |
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ServerRequestInterface $request, |
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string $controllerClass, |
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string $controllerMethod |
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): array { |
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$method = new \ReflectionMethod($controllerClass, $controllerMethod); |
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$args = []; |
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$methodParameters = $method->getParameters(); |
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$routeParameters = $this->routeParamsRegistry->getRouteParams(); |
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foreach ($methodParameters as $parameter) { |
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if ($this->parameterIsOfType($parameter, ServerRequestInterface::class)) { |
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$args[] = $request; |
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} |
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if (array_key_exists($parameter->getName(), $routeParameters)) { |
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$args[] = $routeParameters[$parameter->getName()]; |
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} |
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} |
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return $args; |
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} |
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private function parameterIsOfType(\ReflectionParameter $parameter, string $class): bool |
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{ |
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return ($parameter->getClass() !== null) && $parameter->getClass()->getName() === $class; |
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} |
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private function invokeController(Controller $controller, string $action, array $args): ResponseInterface |
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{ |
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$response = call_user_func_array( |
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[ |
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$controller, |
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$action, |
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], |
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$args |
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); |
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if (!$response instanceof ResponseInterface) { |
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throw new \LogicException( |
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get_class($controller) . ' must return an instance of ' . ResponseInterface::class |
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); |
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} |
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return $response; |
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} |
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} |
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freddiefrantzen /
simplex
