LinkHeaderMiddleware should use the same URL as ViewFactory

This way the X-Forwarded-Path header is used to generate the Link header

classes/App.php

@@ -62,7 +62,7 @@ class App extends \Slim\App
         // Middlewares.
         $this->add(new LocaleMiddleware($container));
         $this->add(new CspMiddleware($container));
-        $this->add(new LinkHeaderMiddleware($container));
+        $this->add(new LinkHeaderMiddleware());
         $this->add(new RouterPathMiddleware($container));
 
         // Controllers.

classes/Factory/ViewFactory.php

@@ -57,22 +57,13 @@ class ViewFactory
     }
 
     /**
-     * Create Smarty view object.
+     * Create a URI suitable for templates.
      *
-     * @param ContainerInterface $container Slim dependency container
-     * @param Request|null $request PSR-7 request
-     *
-     * @return Smarty
-     * @throws SmartyException
+     * @param Request $request
+     * @return Uri
      */
-    public static function create(ContainerInterface $container, Request $request = null): Smarty
+    public static function prepareUri(Request $request): Uri
     {
-        if (!isset($request)) {
-            $request = $container->get('request');
-        }
-
-        $view = new Smarty($container->get('root_path') . '/templates/');
-
         /** @var Uri $uri */
         $uri = $request->getUri();
         if (in_array('https', $request->getHeader('X-Forwarded-Proto'))) {
@@ -92,11 +83,31 @@ class ViewFactory
             $uri = $uri->withBasePath($path);
         }
 
+        return self::cleanBasePath($uri);
+    }
+
+    /**
+     * Create Smarty view object.
+     *
+     * @param ContainerInterface $container Slim dependency container
+     * @param Request|null $request PSR-7 request
+     *
+     * @return Smarty
+     * @throws SmartyException
+     */
+    public static function create(ContainerInterface $container, Request $request = null): Smarty
+    {
+        if (!isset($request)) {
+            $request = $container->get('request');
+        }
+
+        $view = new Smarty($container->get('root_path') . '/templates/');
+
+        $uri = self::prepareUri($request);
+
         /** @var LocaleManager $localeManager */
         $localeManager = $container->get('locale');
 
-        $uri = self::cleanBasePath($uri);
-
         $smartyPlugins = new SmartyPlugins($container->get('router'), $uri->withUserInfo(''));
         $view->registerPlugin('function', 'path_for', [$smartyPlugins, 'pathFor']);
         $view->registerPlugin('function', 'base_url', [$smartyPlugins, 'baseUrl']);

classes/Middleware/LinkHeaderMiddleware.php

@@ -2,6 +2,7 @@
 
 namespace Alltube\Middleware;
 
+use Alltube\Factory\ViewFactory;
 use Psr\Container\ContainerInterface;
 use Slim\Http\Request;
 use Slim\Http\Response;
@@ -13,19 +14,6 @@ use Slim\Router;
  */
 class LinkHeaderMiddleware
 {
-    /**
-     * @var Router
-     */
-    private $router;
-
-    /**
-     * LinkHeaderMiddleware constructor.
-     * @param ContainerInterface $container
-     */
-    public function __construct(ContainerInterface $container)
-    {
-        $this->router = $container->get('router');
-    }
 
     /**
      * @param Request $request
@@ -35,12 +23,14 @@ class LinkHeaderMiddleware
      */
     public function __invoke(Request $request, Response $response, callable $next)
     {
+        $uri = ViewFactory::prepareUri($request);
+
         $response = $response->withHeader(
             'Link',
             implode(
                 '; ',
                 [
-                    '<' . $this->router->getBasePath() . '/css/style.css>',
+                    '<' . $uri->getBasePath() . '/css/style.css>',
                     'rel=preload', 'as=style'
                 ]
             )