public function loginMovil(Request $request) {
        $credentials = $request->only('user', 'password');
        $token = null;
        try {
            if (!$token = JWTAuth::attempt($credentials)) {
                return response()->json('invalid_user_or_password', 422);
            }
        } catch (JWTAuthException $e) {
            return response()->json('failed_to_create_token', 500);
        }

        $user = Input::get("user");
        $pass = Input::get("password");
        $uuid = Input::get("uuid");

        if ($user && $pass) {
            if (User::all()->first()->puede_registrar) {
                $usuario = User::where("user", "LIKE", $user)->where('type', "!=", 'Administrador')->first();
                if ($usuario) {
                    if (is_null($usuario->uuid)) {
                        $usuario->uuid = $uuid;
                        $usuario->save();
                        return response()->json(compact('token', 'usuario'));
                    }
                    if ($usuario->uuid = $uuid) {
                        return response()->json(compact('token', 'usuario'));
                    }
                    return response()->json('error_uuid', 422);
                }
                return response()->json('error_tipo_usuario', 422);
            }
            return response()->json('sistema_cerrado', 422);
        }
        return response()->json('sistema_cerrado', 422);
    }

    public function getAuthUser(Request $request) {
        $user = JWTAuth::toUser($request->token);
        return response()->json(['result' => $user]);
    }

    public function removeToken() {
        JWTAuth::invalidate(JWTAuth::getToken());
        return response()->json(['result' => 'remove token'], 200);
    }