public async Task <ApiResultDTO <CustomerBasketDTO> > AddItemToBasket(BasketItemDTO basketItemDTO)
{
var saveItem = new ApiResultDTO <CustomerBasketDTO> {
Result = new CustomerBasketDTO()
};
#region stock control
var isProductStockExist =
_basketService.CheckProductStock(new CheckProductStockDTO
{
ProductId = basketItemDTO.ProductId,
Quantity = basketItemDTO.Quantity
});
if (!isProductStockExist)
{
//If product is not enough or not exist
saveItem.ResultType = DTO.ResultType.NotFound;
saveItem.Message = "Not enough product";
return(saveItem);
}
#endregion
var existBasketItems = await GetBasketAsync(basketItemDTO.CustomerId);
//if there is not basket in Redis
if (existBasketItems != null &&
existBasketItems.BasketItems != null &&
existBasketItems.BasketItems.Any())
{
//if same product added to card then it will sum existing and new quantity
if (existBasketItems.BasketItems.Any(x => x.ProductId == basketItemDTO.ProductId))
{
var existingProduct = existBasketItems
.BasketItems.First(x => x.ProductId == basketItemDTO.ProductId);
existingProduct.Quantity += basketItemDTO.Quantity;
}
else
{
existBasketItems.BasketItems.Add(basketItemDTO);
}
saveItem.Result = existBasketItems;
saveItem.Message = "Item successfully added.";
}
else
{
saveItem.Result.CustomerId = basketItemDTO.CustomerId;
saveItem.Result.BasketItems.Add(basketItemDTO);
saveItem.Message = "Item successfully added.";
}
saveItem.Result = await UpdateBasketAsync(saveItem.Result);
return(saveItem);
}