public void Post(string cookId, [FromBody] ShoppingListItem value)
 {
     if (Guid.TryParse(cookId, out Guid _cookId) && ControllerHelper.CookExists(_cookId))
     {
         if (ControllerHelper.GetShoppingList(_cookId).Any(sli => ControllerHelper.TypeEquals(sli.Ingredient, value.Ingredient)))
         {
             // Ingredient exists in the shopping list => update
             Ingredient ingToUpdate = ControllerHelper.GetShoppingList(_cookId).First(sli => ControllerHelper.TypeEquals(sli.Ingredient, value.Ingredient)).Ingredient;
             if (ingToUpdate.Unit != value.Ingredient.Unit)
             {
                 ingToUpdate.Quantity += UnitHelper.ConvertTo(value.Ingredient.Quantity, Enum.Parse <Unit>(value.Ingredient.Unit), Enum.Parse <Unit>(ingToUpdate.Unit));
             }
             else
             {
                 ingToUpdate.Quantity += value.Ingredient.Quantity;
             }
         }
         else
         {
             // New ingredient top add => create
             value.Id = Guid.NewGuid();
             ControllerHelper.GetShoppingList(_cookId).Add(value);
         }
     }
 }
 public void Post(string cookId, [FromBody] Ingredient value)
 {
     if (Guid.TryParse(cookId, out Guid _cookId) && ControllerHelper.CookExists(_cookId))
     {
         if (ControllerHelper.GetInventory(_cookId).Any(ing => ControllerHelper.TypeEquals(ing, value)))
         {
             // Ingredient exists in the inventory => update
             Ingredient ingToUpdate = ControllerHelper.GetInventory(_cookId).First(ing => ControllerHelper.TypeEquals(ing, value));
             if (ingToUpdate.Unit != value.Unit)
             {
                 ingToUpdate.Quantity += UnitHelper.ConvertTo(value.Quantity, Enum.Parse <Unit>(value.Unit), Enum.Parse <Unit>(ingToUpdate.Unit));
             }
             else
             {
                 ingToUpdate.Quantity += value.Quantity;
             }
         }
         else
         {
             // New ingredient top add => create
             ControllerHelper.GetInventory(_cookId).Add(value);
         }
     }
 }