index.php

<?php
require dirname(__FILE__) . '/vendor/autoload.php';
require dirname(__FILE__) . '/controllers/TodoController.php';

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Routing\RouteCollectorProxy;
use Slim\Views\Twig;
use Slim\Views\TwigMiddleware;
use Slim\Factory\AppFactory;

define("BASEPATH", '/php-react');
define("DB_NAME", 'todo_app');
define("DB_USER", 'root');
define("DB_PASSWORD", 'password');
define("DB_HOST", 'localhost');

$app = AppFactory::create();
$app->setBasePath(BASEPATH);
$app->addRoutingMiddleware();
$app->addBodyParsingMiddleware();

$twig = Twig::create('views', ['cache' => false]);

// Add Twig-View Middleware
$app->add(TwigMiddleware::create($app, $twig));

$app->get('/', function (Request $request, Response $response, $args) {
	$view = Twig::fromRequest($request);
    return $view->render($response, 'index.html');
});

$app->group('/api', function (RouteCollectorProxy $group) {
	$group->get('/todos', 'TodoController:getTodos');
	$group->post('/todos', 'TodoController:addTodo');
	$group->put('/todos/{id}', 'TodoController:updateTodo');
	$group->delete('/todos/{id}', 'TodoController:deleteTodo');
});

$app->run();