add Twig for template rendering

src/Dependencies.php

@@ -5,9 +5,13 @@ namespace NoteCat;
 
 use DI\Container;
 use Psr\Container\ContainerInterface;
+use Slim\Views\Twig;
 
 class Dependencies
 {
+    private const TWIG = 'view';
+    private const TWIG_TEMPLATE_DIR = __DIR__ . '/../templates';
+
     public static function createContainer(): Container
     {
         $container = new Container();
@@ -15,6 +19,7 @@ class Dependencies
         // Controllers
         $container->set(HelloWorldController::class, function (ContainerInterface $c) {
             return new HelloWorldController(
+                $c->get(self::TWIG),
                 $c->get(HelloWorld::class)
             );
         });
@@ -24,6 +29,12 @@ class Dependencies
             return new HelloWorld();
         });
 
+        $container->set(self::TWIG, function (ContainerInterface $c) {
+            // TODO cache
+            $twigSettings = [];
+            return Twig::create(self::TWIG_TEMPLATE_DIR, $twigSettings);
+        });
+
         return $container;
     }
 }

src/HelloWorldController.php

@@ -5,19 +5,25 @@ namespace NoteCat;
 
 use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
+use Slim\Views\Twig;
 
 class HelloWorldController
 {
+    private Twig $view;
     private HelloWorld $hello;
 
-    public function __construct(HelloWorld $hello)
+    public function __construct(Twig $view, HelloWorld $hello)
     {
+        $this->view = $view;
         $this->hello = $hello;
     }
 
     public function hello(Request $request, Response $response): Response
     {
-        $response->getBody()->write('<b>' . $this->hello->getHello() . "</b>\n");
-        return $response;
+        $renderData = [
+            'hello' => $this->hello->getHello(),
+        ];
+
+        return $this->view->render($response, 'helloworld.html', $renderData);
     }
 }

src/Middlewares.php

@@ -0,0 +1,15 @@
+<?php
+declare(strict_types=1);
+
+namespace NoteCat;
+
+use Slim\App;
+use Slim\Views\TwigMiddleware;
+
+class Middlewares
+{
+    public static function setMiddlewares(App $app): void
+    {
+        $app->add(TwigMiddleware::createFromContainer($app));
+    }
+}