public async Task AddBalanceAsync(PlaceOrderPushlishParams parameters)
{
if (parameters == null)
{
throw new ArgumentException(nameof(parameters) + "为空");
}
var account = await _dbContext.BusineAccounts.FirstAsync();
account.Balance += parameters.TotalPrice;
await _dbContext.SaveChangesAsync();
}
public async Task UpdateProductStoreNumAsync(PlaceOrderPushlishParams parameters)
{
if (parameters == null)
{
throw new ArgumentException(nameof(parameters) + "为空");
}
var warehouses = await _dbContext.Warehouses.Where(i => parameters.ProductIds.Contains(i.ProductId))
.ToListAsync();
warehouses.ForEach(i => i.StoreNum--);
await _dbContext.SaveChangesAsync();
}
/// <summary>
/// 下单
/// </summary>
/// <param name="userId"></param>
/// <param name="productIds"></param>
/// <returns></returns>
public async Task <Guid> AddOrderAsync(Guid userId, IEnumerable <Guid> productIds)
{
//下单过程：
//1.下单，写入订单表
//2.用户支付，用户账户扣款
//3.商品库存减一
//4.企业账户加款
if (userId == Guid.Empty || !productIds.Any())
{
throw new ArgumentException("参数为空");
}
using (var trans = _dbContext.Database.BeginTransaction())
{
var client = _httpClient.CreateClient();
string paramss = string.Join("|", productIds);
//下单
var order = new Order()
{
UserId = userId,
TotalPrices = Convert.ToDecimal(await client.GetStringAsync("http://localhost:5001/api/Warehouse/getTotalPrice?productIds=" + paramss))//await _dbContext.Products.Where(i => productIds.Contains(i.Id)).SumAsync(i => i.Price)
};
await _dbContext.Orders.AddAsync(order);
var orderProducts = productIds.Select(i => new OrderProduct()
{
OrderId = order.Id,
ProductId = i
});
await _dbContext.OrderProducts.AddRangeAsync(orderProducts);
await _dbContext.SaveChangesAsync();
//下单成功，发布消息
var parameters = new PlaceOrderPushlishParams
{
UserId = userId,
OrderId = order.Id,
TotalPrice = order.TotalPrices,
ProductIds = productIds
};
await _publisher.PublishAsync(Constants.AddOrder, parameters, Constants.UserPaymentSuccess);
trans.Commit();
return(order.Id);
}
}
public async Task <Guid> UserPaymentAsync(PlaceOrderPushlishParams parameters)
{
if (parameters == null)
{
throw new ArgumentException(nameof(parameters) + "为空");
}
using (var trans = _dbContext.Database.BeginTransaction())
{
var user = await _dbContext.Users.FindAsync(parameters.UserId);
user.Balance -= parameters.TotalPrice;
await _dbContext.SaveChangesAsync();
//发布消息，库存商品减1，企业账户加款
await _publisher.PublishAsync(Constants.UserPayment, parameters);
//支付成功，更新订单支付状态为“已支付”,通过mq回调方法
trans.Commit();
}
return(parameters.OrderId);
}
