<?php

require_once __DIR__.'/vendor/autoload.php';

$loader = new Twig_Loader_Filesystem(__DIR__.DIRECTORY_SEPARATOR.'views');
$twig = new Twig_Environment($loader);
$twig->addFunction(new Twig_SimpleFunction('link', function ($value) {
    return sprintf('/?template=%s', $value);
}));

$template = ($_GET['template'] ?: 'index');

echo $twig->render(sprintf('%s.html.twig', $template));