public CashBuyDTO ToDTO(CashBuyEntity entity)
{
CashBuyDTO dto = new CashBuyDTO();
dto.UserId = entity.UserId;
dto.BuyerUserCode = entity.Buyer.UserCode;
dto.BuyerUserName = entity.Buyer.NickName;
dto.OrderCode = entity.OrderCode;
dto.Number = entity.Number;
dto.Price = entity.Price;
dto.Amount = entity.Amount;
dto.Charge = entity.Charge;
dto.BalanceNum = entity.BalanceNum;
dto.StateType = entity.StateType;
dto.StateName = entity.StateType.GetEnumName <CashBuyStateEnums>();
dto.BuyType = entity.BuyType;
dto.CurrencyType = entity.CurrencyType;
dto.CurrencyName = entity.CurrencyType.GetEnumName <CurrencyEnums>();
dto.CreateTime = entity.CreateTime;
return(dto);
}
//求购
public async Task <long> AddAsync(long userId, long buyerUid, string orderCode, int number, decimal price, decimal amount, decimal charge, int balanceNum, int accountType)
{
decimal payAmount = 0;
payAmount = price * number;
//获取商城账户余额
var shopBalance = await shopApiService.GetBalanceAsync(buyerUid);
if (shopBalance < payAmount)
{
return(-5);//账户余额不足
}
using (MyDbContext dbc = new MyDbContext())
{
//修改商城账户余额,type 0为减少，1为增加
var payResult = await shopApiService.SetBalanceAsync(buyerUid, 0, payAmount, accountType);
if (!payResult)
{
return(-6);//支付出错
}
CashBuyEntity log = new CashBuyEntity();
log.UserId = userId;
log.OrderCode = orderCode;
log.Number = number;
log.Price = price;
log.Amount = amount;
log.Charge = charge;
log.BalanceNum = balanceNum;
log.StateType = 0;
log.BuyType = 1;//BuyType 0:买入，1：求购
log.CurrencyType = accountType;
dbc.CashBuys.Add(log);
await dbc.SaveChangesAsync();
return(log.Id);
}
}
public async Task <long> BuyFromAsync(long userId, long buyerUid, long sellId, int buyNum)
{
decimal balanceAmount = 0, payAmount = 0;
using (MyDbContext dbc = new MyDbContext())
{
var sellEntity = await dbc.GetAll <CashSellEntity>().SingleOrDefaultAsync(w => w.Id == sellId);
if (sellEntity == null)
{
return(-1);
}
if (sellEntity.Seller.Id == userId)
{
return(-8); //不能买入自己挂卖的订单
}
if (sellEntity.BalanceNum < buyNum)
{
return(-2);//买入数量不能大于交易数量
}
payAmount = sellEntity.Price * buyNum;
//获取商城账户余额
var shopBalance = await shopApiService.GetBalanceAsync(buyerUid);
if (shopBalance < payAmount)
{
return(-5);//账户余额不足
}
using (var scope = dbc.Database.BeginTransaction())
{
try
{
#region 买入订单、交易订单
string orderCode = Common.CommonHelper.CreateNo();
CashBuyEntity buy = new CashBuyEntity();
buy.UserId = userId;
buy.OrderCode = orderCode;
buy.Number = buyNum;
buy.Price = sellEntity.Price;
buy.Amount = buyNum * sellEntity.Price;
buy.Charge = 0;
buy.BalanceNum = buyNum;
buy.StateType = 1;
buy.BuyType = 0;//BuyType 0:买入，1：求购
buy.CurrencyType = sellEntity.CurrencyType;
dbc.CashBuys.Add(buy);
await dbc.SaveChangesAsync();
CashOrderEntity order = new CashOrderEntity();
order.BuyId = buy.Id;
order.SellId = sellId;
order.BuyUserId = userId;
order.SellUserId = sellEntity.UserId;
order.OrderCode = orderCode;
order.Number = buyNum;
order.Price = sellEntity.Price;
order.Amount = buyNum * sellEntity.Price;
order.PayStateType = 1;
order.PayTime = DateTime.Now;
order.ConfirmStateType = 1;
order.ConfirmTime = DateTime.Now;
order.StateType = 1;
dbc.CashOrders.Add(order);
sellEntity.BalanceNum -= buyNum;
if (sellEntity.BalanceNum == 0)
{
sellEntity.StateType = (int)CashSellStateEnums.已完成;
}
#endregion
//买方 增加积分
#region 买方 增加积分
var userBuyEntity = await dbc.GetAll <UserEntity>().SingleOrDefaultAsync(w => w.Id == userId);
var userSellEntity = await dbc.GetAll <UserEntity>().AsNoTracking().SingleOrDefaultAsync(w => w.Id == sellEntity.UserId);
if (sellEntity.CurrencyType == 1)//A积分
{
userBuyEntity.BonusAmount += buyNum;
balanceAmount = userBuyEntity.BonusAmount;
}
else if (sellEntity.CurrencyType == 2)//B积分
{
userBuyEntity.Amount += buyNum;
balanceAmount = userBuyEntity.Amount;
}
else
{
scope.Rollback();
return(-4);
}
int JournalTypeId = 1;
await journalService.AddAsync(userId, buyNum, JournalTypeId, sellEntity.CurrencyType, balanceAmount, "交易买入", 1);
#endregion
await dbc.SaveChangesAsync();
//买方扣除账户余额
//修改商城账户余额,type 0为减少，1为增加
var payResult = await shopApiService.SetBalanceAsync(buyerUid, 0, payAmount, sellEntity.CurrencyType);
if (!payResult)
{
return(-6);//支付出错
}
//卖方增加账户余额
//修改商城账户余额,type 0为减少，1为增加
var getResult = await shopApiService.SetBalanceAsync(userSellEntity.ShopUID, 1, payAmount, sellEntity.CurrencyType);
if (!getResult)
{
return(-7);//卖方账户增加出错
}
scope.Commit();
return(order.Id);
}
catch (Exception ex)
{
scope.Rollback();
return(-3);
}
}
}
}
