ConfigProvider.php

<?php

namespace App;


use App\Action\HomePageAction;
use App\Action\HomePageFactory;
use App\Action\PingAction;
use Zend\Expressive\Router\FastRouteRouter;
use Zend\Expressive\Router\RouterInterface;

class ConfigProvider
{
    function __invoke() : array
    {
        return [
            'dependencies' => $this->getDependencyConfig(),
            'routes' => $this->getRouteConfig(),
        ];
    }

    private function getDependencyConfig() : array
    {
        return [
            'invokables' => [
                RouterInterface::class => FastRouteRouter::class,
                PingAction::class => PingAction::class,
            ],
        ];
    }

    private function getRouteConfig() : array
    {
        $routeConfig = [];
        $actions = $this->getValidActions();
        foreach ($actions as $action) {
            $className = 'App\\Action\\' . $action;
            $defined = defined("{$className}::ROUTE_NAME")
                && defined("{$className}::ROUTE_PATH")
                && defined("{$className}::ROUTE_METHODS");
            if($defined) {
                $routeConfig[] = $this->addRouteConfigForAction($className);
            }
        }
        return $routeConfig;
    }

    /**
     * @return array
     */
    private function getValidActions() : array
    {
        $classes = [];
        $actionList = glob('src/App/Action/*Action.php');
        foreach ($actionList as $action) {
            preg_match(
                '/^src\/App\/Action\/(?\'class\'[A-Z][a-z]*Action).php$/',
                $action,
                $matches
            );
            if (isset($matches['class'])) {
                $classes[] = $matches['class'];
            }
        }
        return $classes;
    }

    private function addRouteConfigForAction(string $className) : array
    {
        return [
            'name' => $className::ROUTE_NAME,
            'path' => $className::ROUTE_PATH,
            'middleware' => $className,
            'allowed_methods' => $className::ROUTE_METHODS,
        ];
    }

}