public async Task <int> RemoveFromCartAsync(Pizzas pizza)
{
var shoppingCartItem =
await _appDbContext.ShoppingCartItems.SingleOrDefaultAsync(
s => s.Pizza.Id == pizza.Id && s.ShoppingCartId == ShoppingCartId);
var localAmount = 0;
if (shoppingCartItem != null)
{
if (shoppingCartItem.Amount > 1)
{
shoppingCartItem.Amount--;
localAmount = shoppingCartItem.Amount;
}
else
{
_appDbContext.ShoppingCartItems.Remove(shoppingCartItem);
}
}
await _appDbContext.SaveChangesAsync();
return(localAmount);
}
public async Task AddToCartAsync(Pizzas pizza, int amount)
{
var shoppingCartItem =
await _appDbContext.ShoppingCartItems.SingleOrDefaultAsync(
s => s.Pizza.Id == pizza.Id && s.ShoppingCartId == ShoppingCartId);
if (shoppingCartItem == null)
{
shoppingCartItem = new ShoppingCartItem
{
ShoppingCartId = ShoppingCartId,
Pizza = pizza,
Amount = 1
};
_appDbContext.ShoppingCartItems.Add(shoppingCartItem);
}
else
{
shoppingCartItem.Amount++;
}
await _appDbContext.SaveChangesAsync();
}