<?php
    
class Router {
    
    public function route () {
        $controllerFound = false;
        
        // Deside the controller
        if (key_exists('controller', $_GET) && !empty($_GET['controller'])) {
            $controllerName = ucfirst(strtolower($_GET['controller']));
            $fullControllerName = $controllerName . 'Controller';
            $controllerNameAndPath = dirname(__FILE__) . '/../app/controller/' . $fullControllerName . '.php';
            if (file_exists($controllerNameAndPath)) {
                include_once $controllerNameAndPath;
                $controller = new $fullControllerName();
                $controllerFound = true;
            }
        } else {
            $controllerName = 'Index';
            $controllerNameAndPath = dirname(__FILE__) . '/../app/controller/IndexController.php';
            if (file_exists($controllerNameAndPath)) {
                include_once $controllerNameAndPath;
                $controller = new IndexController();
                $controllerFound = true;
            }
        }

        $actionFound = false;

        if ($controllerFound) {
            // Deside the action
            if (key_exists('action', $_GET) && !empty($_GET['action'])) {
                $actionName = $_GET['action'];
                $functionName = $actionName . 'Action';
                if (method_exists($controller, $functionName)) {
                    $actionFound = true;
                }
            } else {
                $actionName = 'index';
                $functionName = 'indexAction';
                if (method_exists($controller, $functionName)) {
                    $actionFound = true;
                }
            }
        }
        
        if (!$controllerFound || !$actionFound) {
            include_once dirname(__FILE__) . '/../app/controller/ErrorController.php';
            $actionName = 'index';
            $controllerName = 'Error';
            $controller = new ErrorController();
            $controller->setErrorCode('404');
            $controller->setErrorMsg((!$controllerFound ? 'Controller Not Found' : 'Action Not Found'));
        }
        
        $controller->setActionName($actionName);
        $controller->setControllerName($controllerName);
        $controller->setParams($_REQUEST);
        
        $controller->init();
        $controller->runAction();
    }
    
}