private async Task <ShopCartItem> GetValidShopCartItem(Guid productId, ShopCartClient shopCart, ShopCartItem item = null)
{
if (item != null && productId != item.ProductId)
{
AddProcessingError("Item doesn't match with to the informed");
return(null);
}
if (shopCart == null)
{
AddProcessingError("Shop cart not found");
return(null);
}
var shopCartItem = await _context.ShopCartItems
.FirstOrDefaultAsync(i => i.ShopCartId == shopCart.Id && i.ProductId == productId);
if (shopCartItem == null || !shopCart.ShopCartItemExists(shopCartItem))
{
AddProcessingError("Item isn't on shop cart");
return(null);
}
return(shopCartItem);
}
private void HandlerExistentShopCart(ShopCartClient cart, ShopCartItem item)
{
var productItemExistent = cart.ShopCartItemExists(item);
cart.AddItem(item);
ValidatingShopCart(cart);
if (productItemExistent)
{
_context.ShopCartItems.Update(cart.GetByProductId(item.ProductId));
}
else
{
_context.ShopCartItems.Add(item);
}
_context.ShopCartClients.Update(cart);
}