public function handle($request, Closure $next)
 {
     $authToken = $request->header('Auth-token');
     if (!$authToken || !AuthService::tokenIsValid($authToken)) {
         //return abort(401, 'Not authorized.');
         return response('Not authorized.')->header('Status', 401);
     }
     AuthService::extendToken($authToken);
     Auth::login(Token::where('auth_token', $authToken)->first()->user);
     return $next($request);
 }