public async Task <int> SetItemAmount(Merchandise merchandise, int amount)
{
AppDbContext appDbContext = _appDbContext;
ShoppingCartItem shoppingCartItem = await appDbContext.ShoppingCartItems.SingleOrDefaultAsync(s => s.Merchandise.MerchandiseId == merchandise.MerchandiseId && s.ShoppingCartId == ShoppingCartId);
int localAmount = 0;
shoppingCartItem.Amount = amount;
if (shoppingCartItem.Amount > 0)
{
localAmount = shoppingCartItem.Amount;
}
else
{
appDbContext.ShoppingCartItems.Remove(shoppingCartItem);
}
await appDbContext.SaveChangesAsync();
return(localAmount);
}
public async Task UpdateCartItem(Merchandise merchandise, int amount)
{
AppDbContext appDbContext = _appDbContext;
ShoppingCartItem shoppingCartItem = await appDbContext.ShoppingCartItems.SingleOrDefaultAsync(s => s.Merchandise.MerchandiseId == merchandise.MerchandiseId && s.ShoppingCartId == ShoppingCartId);
if (shoppingCartItem == null)
{
shoppingCartItem = new ShoppingCartItem
{
ShoppingCartId = ShoppingCartId,
Merchandise = merchandise,
Amount = amount
};
appDbContext.ShoppingCartItems.Add(shoppingCartItem);
}
else
{
shoppingCartItem.Amount = amount;
}
await appDbContext.SaveChangesAsync();
}
