public async Task <Result> CheckoutByOrder(int?userAddressId, int orderId)
{
var user = await _workContext.GetCurrentUserAsync();
var order = await _orderRepository.Query()
.Include(c => c.OrderItems)
.FirstOrDefaultAsync(c => c.Id == orderId && c.CustomerId == user.Id);
if (order == null)
{
throw new Exception("订单不存在");
}
var param = new CheckoutParam()
{
CustomerId = user.Id,
UserAddressId = userAddressId
};
param.Items = order.OrderItems.Select(c => new CheckoutItemParam()
{
ProductId = c.ProductId,
Quantity = c.Quantity
}).ToList();
var data = await _orderService.OrderCheckout(param);
return(Result.Ok(data));
}
public async Task <Result> CheckoutByCart(int?userAddressId)
{
var user = await _workContext.GetCurrentUserAsync();
var customerId = user.Id;
var cart = await _cartRepository.Query()
.Where(x => x.CustomerId == customerId && x.IsActive)
.Include(c => c.Items)
.FirstOrDefaultAsync();
if (cart == null || cart.Items == null || cart.Items.Where(c => c.IsChecked).Count() <= 0)
{
throw new Exception("请选择商品");
}
if (cart.Items.Where(c => c.IsChecked).Any(c => c.Quantity <= 0))
{
throw new Exception("商品数量必须大于0");
}
var param = new CheckoutParam()
{
CustomerId = customerId,
UserAddressId = userAddressId,
};
param.Items = cart.Items.Where(c => c.IsChecked).Select(c => new CheckoutItemParam()
{
ProductId = c.ProductId,
Quantity = c.Quantity
}).ToList();
var data = await _orderService.OrderCheckout(param);
return(Result.Ok(data));
}
public async Task <Result> CheckoutByProduct(int?userAddressId, int productId, int quantity)
{
var user = await _workContext.GetCurrentUserAsync();
var param = new CheckoutParam()
{
CustomerId = user.Id,
UserAddressId = userAddressId
};
param.Items.Add(new CheckoutItemParam()
{
ProductId = productId, Quantity = quantity
});
var data = await _orderService.OrderCheckout(param);
return(Result.Ok(data));
}
/// <summary>
/// 验证并获取预下单信息
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public async Task <CheckoutResult> OrderCheckout(CheckoutParam param)
{
if (param == null)
{
throw new Exception("参数异常");
}
if (param.Items == null || param.Items.Count <= 0)
{
throw new Exception("购买商品不存在或已下架");
}
if (param.Items.Any(c => c.Quantity <= 0))
{
throw new Exception("购买商品数量必须>0");
}
var user = await _workContext.GetCurrentUserOrNullAsync();
var userId = user?.Id ?? (int)UserWithId.System;
var customerId = param.CustomerId;
var customer = await _userRepository.FirstOrDefaultAsync(customerId);
if (customer == null)
{
throw new Exception("客户不存在");
}
var ids = param.Items.Select(c => c.ProductId).Distinct();
var products = await _productRepository.Query()
.Where(c => ids.Contains(c.Id))
.Include(p => p.ThumbnailImage)
.Include(p => p.OptionCombinations).ThenInclude(o => o.Option)
.Select(x => new CheckoutItemResult
{
Id = x.Id,
ProductId = x.Id,
//Quantity = x.Quantity,
ProductName = x.Name,
ProductPrice = x.Price,
IsAllowToOrder = x.IsAllowToOrder,
DisplayStockAvailability = x.DisplayStockAvailability,
DisplayStockQuantity = x.DisplayStockQuantity,
StockTrackingIsEnabled = x.StockTrackingIsEnabled,
ProductImage = x.ThumbnailImage.Url,
IsPublished = x.IsPublished,
VariationOptions = x.OptionCombinations.Select(c => new ProductVariationOption
{
OptionName = c.Option.Name,
Value = c.Value
})
}).ToListAsync();
if (products == null || products.Count <= 0)
{
throw new Exception("购买商品不存在或已下架");
}
var productIds = products.Select(c => c.ProductId).Distinct();
var stocks = await _stockRepository.Query().Where(c => productIds.Contains(c.ProductId)).ToListAsync();
products.ForEach(c =>
{
c.Quantity = param.Items.First(x => x.ProductId == c.ProductId).Quantity;
c.StockQuantity = stocks.Where(x => x.ProductId == c.ProductId && x.IsEnabled).Sum(x => x.StockQuantity);
if (!c.IsPublished)
{
c.IsAllowToOrder = false;
c.StockQuantity = 0;
}
if (c.IsAllowToOrder && c.StockTrackingIsEnabled)
{
if (c.StockQuantity <= 0)
{
c.IsAllowToOrder = false;
}
else
{
if (!c.DisplayStockQuantity)
{
c.StockQuantity = 0; // 不显示库存量
}
}
}
});
var userAddressId = param.UserAddressId ?? customer.DefaultBillingAddressId;
UserAddressShippingResult address = null;
if (userAddressId.HasValue)
{
var list = await _userAddressService.GetList(userAddressId.Value);
address = list.FirstOrDefault();
}
return(new CheckoutResult()
{
CouponCode = "",
ShippingAmount = 0,
Discount = 0,
Address = address,
Items = products
});
}
