public IActionResult CreateNutrition(NutritionDTO data)
        {
            var user      = db.Users.Include(x => x.Nutritions).FirstOrDefault(u => u.Username == data.Username);
            var nutrition = db.Nutrition.FirstOrDefault(n => n.UserId == user.Id);

            if (nutrition != null)
            {
                nutrition.Calories      = data.Calories;
                nutrition.Protein       = data.Protein;
                nutrition.Carbohydrates = data.Carbohydrates;
                nutrition.Fats          = data.Fats;
                db.Nutrition.Update(nutrition);
            }
            else
            {
                nutrition = new Nutrition()
                {
                    Calories      = data.Calories,
                    Protein       = data.Protein,
                    Carbohydrates = data.Carbohydrates,
                    Fats          = data.Fats
                };
                user.Nutritions.Add(nutrition);
            }
            db.SaveChanges();
            return(Ok());
        }
        public List <string> GetNutrition(NutritionDTO data)
        {
            var userId    = db.Users.FirstOrDefault(x => x.Username == data.Username).Id;
            var nutrition = db.Nutrition.FirstOrDefault(x => x.UserId == userId);
            var list      = new List <string>();

            if (nutrition != null)
            {
                list.Add(nutrition.Calories);
                list.Add(nutrition.Protein);
                list.Add(nutrition.Carbohydrates);
                list.Add(nutrition.Fats);
            }
            return(list);
        }