public JsonResult AddTeapot(int comfortTemperature, string appUserId)
        {
            Random random = new Random();
            Teapot teapot = new Teapot()
            {
                Id                 = Guid.NewGuid(),
                AppUserId          = appUserId,
                ComfortTemperature = comfortTemperature,
                CurrentTemperature = comfortTemperature,
                CurrentWaterAmount = random.Next(0, 100)
            };

            bool isAdded = _teapotRepository.AddTeapot(teapot);

            if (isAdded)
            {
                return(new JsonResult(new { message = "ok", teapotState = GetCurrentUserTeapotState(appUserId) }));
            }
            else
            {
                return(new JsonResult(new { message = "error" }));
            }
        }