Move middleware to a subfolder

classes/LinkHeaderMiddleware.php

@@ -1,46 +0,0 @@
-<?php
-
-namespace Alltube;
-
-use Psr\Container\ContainerInterface;
-use Slim\Http\Request;
-use Slim\Http\Response;
-use Slim\Router;
-
-/**
- * Class LinkHeaderMiddleware
- * @package Alltube
- */
-class LinkHeaderMiddleware
-{
-    /**
-     * @var Router
-     */
-    private $router;
-
-    /**
-     * LinkHeaderMiddleware constructor.
-     * @param ContainerInterface $container
-     */
-    public function __construct(ContainerInterface $container)
-    {
-        $this->router = $container->get('router');
-    }
-
-    /**
-     * @param Request $request
-     * @param Response $response
-     * @param callable $next
-     * @return mixed
-     */
-    public function __invoke(Request $request, Response $response, callable $next)
-    {
-        $response = $response->withHeader(
-            'Link',
-            '<' . $this->router->getBasePath() . '/css/style.css>; rel=preload; as=style'
-        );
-
-
-        return $next($request, $response);
-    }
-}