<?php
class Router {
    protected $controller = 'HomeController';
    protected $method = 'index';
    protected $params = [];

    public function route() {
        $url = $this->parseUrl();

        // Absoluter Pfad zu den Controllern (geht von core/ einen Ordner hoch und in app/controllers)
        $controllerPath = __DIR__ . '/../app/controllers/';

        // 1. Controller prüfen (z.B. /user/ -> UserController)
        if (isset($url[0]) && file_exists($controllerPath . ucfirst($url[0]) . 'Controller.php')) {
            $this->controller = ucfirst($url[0]) . 'Controller';
            unset($url[0]);
        }

        require_once $controllerPath . $this->controller . '.php';
        $this->controller = new $this->controller;

        // 2. Methode prüfen (z.B. /user/edit -> Methode edit())
        if (isset($url[1])) {
            if (method_exists($this->controller, $url[1])) {
                $this->method = $url[1];
                unset($url[1]);
            }
        }

        // 3. Restliche Parameter sammeln
        $this->params = $url ? array_values($url) : [];

        // 4. Controller-Methode mit den Parametern aufrufen
        call_user_func_array([$this->controller, $this->method], $this->params);
    }

    private function parseUrl() {
        if (isset($_GET['url'])) {
            return explode('/', filter_var(rtrim($_GET['url'], '/'), FILTER_SANITIZE_URL));
        }
        return [];
    }
}