/**
  * This methods will be called at application startup
  * @param $appInstance
  * @return void
  * @throws \Exception
  */
 public static function addRouteDefinitions(Slim $appInstance)
 {
     $appInstance->map('/protected-storage/:inst/:id/:accessMethod/:path+', function ($inst, $id, $accessMethod, $path) use($appInstance) {
         if (!in_array($accessMethod, cProtectedStorage::$allowedAccessMethods, true)) {
             $appInstance->halt(400, 'Invalid request');
         }
         $fileName = array_pop($path);
         $rel = '';
         foreach ($path as $value) {
             $rel .= $value . '/';
         }
         $rel .= $fileName;
         $user = null;
         if ($accessMethod === 'private') {
             try {
                 $user = new MembersAuth();
                 $user->isUserLoggedIn();
             } catch (LoginExceptions $e) {
                 $appInstance->halt(401, 'Unauthorized');
             }
         }
         $fullPath = $inst . '/' . $id . '/' . $accessMethod . '/' . $rel;
         $controller = new cProtectedStorage($inst, $id, $accessMethod, $rel);
         if ($controller->isCorrectPath($fullPath)) {
             $appInstance->etag(md5($fullPath));
             $appInstance->expires('+1 week');
             $headers = $controller->outputFile();
             if (array_key_exists('download', $_REQUEST)) {
                 $headers['Content-Type'] = 'application/octet-stream';
             }
             foreach ($headers as $key => $value) {
                 $appInstance->response->headers->set($key, $value);
             }
         } else {
             $appInstance->notFound();
         }
     })->via('GET', 'POST');
 }