<?php

/**
 * Basic wrapper around twig
 */
class Renderer {
    private $twig;
    private $data = [];

    public function __construct() {
        $loader = new \Twig\Loader\FilesystemLoader(PATH_ROOT . '/theme/default/');
        $this->twig = new \Twig\Environment($loader);
    }

    public function prepare($key, $value) {
        $this->data[$key] = $value;
    }

    public function display($template) {
        global $router;
        try {
            $this->render("{$router->namespace}/{$template}.twig");
        } catch (\Twig\Error\LoaderError $e) {
            $this->error(500);
        }
    }

    public function error($errorCode) {
        $errorTemplate = PATH_ROOT . "/theme/default/error/{$errorCode}.twig";
        if (file_exists($errorTemplate)) {
            echo $this->render("error/{$errorCode}.twig");
        } else {
            echo $this->render("error/generic.twig");
        }
    }

    private function render($template) {
        global $controlrow;
        global $numqueries;
        global $starttime;

        $this->prepare("STYLE_FOLDER", '/theme/default/');
        $this->prepare("dkgamename", $controlrow["gamename"]);
        $this->prepare("totaltime", round(getmicrotime() - $starttime, 4));
        $this->prepare("numqueries", $numqueries);
        $this->prepare("version", DRAGONFORK_VERSION);
        $this->prepare("build", DRAGONFORK_BUILD);

        echo $this->twig->render($template, $this->data);
        die();
    }

    public function redirect($redirection) {
        header("Location: " . $redirection);
        die();
    }
}