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<?php |
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declare(strict_types=1); |
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namespace Shoot\Shoot\Middleware; |
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use Psr\Container\ContainerExceptionInterface; |
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use Psr\Container\ContainerInterface; |
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use Shoot\Shoot\Context; |
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use Shoot\Shoot\HasPresenterInterface; |
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use Shoot\Shoot\MiddlewareInterface; |
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use Shoot\Shoot\PresenterInterface; |
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use Shoot\Shoot\View; |
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/** |
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* Resolves presenters as defined by presentation models using a PSR-11 compliant DI container. |
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*/ |
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final class PresenterMiddleware implements MiddlewareInterface |
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{ |
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/** @var ContainerInterface */ |
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private $container; |
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/** |
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* @param ContainerInterface $container A PSR-11 compliant DI container holding the presenters. |
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*/ |
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public function __construct(ContainerInterface $container) |
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{ |
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$this->container = $container; |
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} |
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/** |
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* @param View $view The view to be processed by this middleware. |
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* @param Context $context The context in which to process the view. |
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* @param callable $next The next middleware to call |
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* |
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* @throws ContainerExceptionInterface |
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* |
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* @return View The processed view. |
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*/ |
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public function process(View $view, Context $context, callable $next): View |
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{ |
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$presentationModel = $view->getPresentationModel(); |
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if ($presentationModel instanceof HasPresenterInterface) { |
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$presenter = $this->loadPresenter($presentationModel); |
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$presentationModel = $presenter->present($context, $presentationModel); |
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$view = $view->withPresentationModel($presentationModel); |
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} |
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return $next($view); |
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} |
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/** |
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* Load the presenter from the container. |
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* |
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* @param HasPresenterInterface $hasPresenter A presentation model which has a presenter defined. |
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* |
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* @throws ContainerExceptionInterface |
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* |
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* @return PresenterInterface The presenter as returned by the container. |
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*/ |
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private function loadPresenter(HasPresenterInterface $hasPresenter): PresenterInterface |
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{ |
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return $this->container->get($hasPresenter->getPresenter()); |
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} |
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} |
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shootphp /
shoot
