<?php

namespace app\core;
use app\core\exceptions\NotFoundException;

class Router
{
    public Request $request;
    public Response $response;
    protected array $routes = [];

    public function __construct(Request $request, Response $response)
    {
        $this->request = $request;
        $this->response = $response;
    }

    public function get($path, $callback)
    {
        $this->routes['get'][$path] = $callback;
    }

    public function post($path, $callback)
    {
        $this->routes['post'][$path] = $callback;
    }

    /*
    in aceasta functie se identifica path ul catre fisier, metoda (GET/POST) si se identifica un "routes" callback ul (in general controller ul) pe care trebuie sa l returneze
    astfel, in call_user_function, se ofera clasa de tip constructor si request ul de la user ca dupa controller ul sa se ocupe de restul
    */

    public function resolve()
    {
        $path = $this->request->getPath();
        $method = $this->request->method();
        $callback = $this->routes[$method][$path] ?? false;

        if (!$callback) {
            throw new NotFoundException();
        }

        if (is_string($callback)) {
            return $this->renderView($callback);
        }

        if (is_array($callback)) {
            $controller = new $callback[0]();
            Application::$app->controller = $controller;
            $controller->action = $callback[1];
            $callback[0] = $controller;

            foreach($controller->getMiddlewares() as $middleware){
                $middleware->execute();
            }            
        }


        return call_user_func($callback, $this->request, $this->response);
    }

    //layout ne va ajuta sa identificam ce fel de layout trebuie sa aiba pagina pe care o trimitem (elemente extra in afara de continut: navbar, elemente din baza de date etc)
    protected function layoutContent()
    {
        $layout = Application::$app->layout;
        if (Application::$app->controller) {
            $layout = Application::$app->controller->layout;
        }

        ob_start();
        include_once Application::$ROOT_DIR . "/views/layouts/$layout.php";
        return ob_get_clean();
    }


    public function renderView($view, $params = [])
    {
        $layoutContent = $this->layoutContent();
        $viewContent = $this->renderOnlyView($view, $params);

        return str_replace('{{content}}', $viewContent, $layoutContent);
    }

    public function renderContent($viewContent)
    {
        $layoutContent = $this->layoutContent();
        return str_replace('{{content}}', $viewContent, $layoutContent);
    }

    protected function renderOnlyView($view, $params)
    {
        foreach ($params as $key => $value) {
            $$key = $value;
        }

        ob_start();
        include_once Application::$ROOT_DIR . "/views/$view.php";
        return ob_get_clean();
    }
}