private async Task HandleBuyReceiptAsync(KyubeyContext db, ActionDataWrap data, DateTime time)
{
try
{
var token = data.data.ask.Split(' ')[1];
var order = await db.DexBuyOrders.SingleOrDefaultAsync(x => x.Id == data.data.id && x.TokenId == token);
if (order != null)
{
db.DexBuyOrders.Remove(order);
await db.SaveChangesAsync();
}
order = new DexBuyOrder
{
Id = data.data.id,
Account = data.data.account,
Ask = Convert.ToDouble(data.data.ask.Split(' ')[0]),
Bid = Convert.ToDouble(data.data.bid.Split(' ')[0]),
UnitPrice = data.data.unit_price / 10000.0,
Time = time,
TokenId = token
};
db.DexBuyOrders.Add(order);
await db.SaveChangesAsync();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
static async Task DoMatchAsync(string transferHash, string account, string askSymbol, double askAmount, string bidSymbol, double bidAmount)
{
askAmount /= 1000000;
bidAmount /= 1000000;
//sell
if (askSymbol == "TRX")
{
var price = askAmount / bidAmount;
var order = new DexSellOrder
{
Account = account,
Ask = askAmount,
Bid = bidAmount,
TokenId = bidSymbol,
Time = DateTime.Now,
UnitPrice = price
};
var orders = await db.DexBuyOrders.Where(x => x.TokenId == bidSymbol)
.Where(x => x.UnitPrice >= price)
.ToListAsync();
var remianAmount = bidAmount;
foreach (var x in orders)
{
if (remianAmount <= 0)
{
break;
}
//token amount
var amount = x.Ask < remianAmount ? x.Ask : remianAmount;
x.Ask -= amount; // 2元
x.Bid -= amount * x.UnitPrice; // 1个苹果
order.Bid -= amount;
order.Ask -= amount * price;
remianAmount -= amount;
await TransferAsync(x.Account, amount, bidSymbol);
await TransferAsync(account, amount *price, askSymbol);
db.MatchReceipts.Add(new MatchReceipt
{
IsSellMatch = true,
Asker = account,
Ask = amount * x.UnitPrice,
Bidder = x.Account,
Bid = amount,
Time = DateTime.Now,
TokenId = bidSymbol,
UnitPrice = x.UnitPrice
});
if (x.Ask == 0 || x.Bid == 0)
{
db.Remove(x);
}
}
if (order.Ask != 0 && order.Bid != 0)
{
db.DexSellOrders.Add(order);
}
await db.SaveChangesAsync();
}
//buy
else
{
double price = bidAmount / askAmount;
var order = new DexBuyOrder
{
TransferHash = transferHash,
Account = account,
Ask = askAmount,
Bid = bidAmount,
TokenId = askSymbol,
Time = DateTime.Now,
UnitPrice = price
};
var orders = await db.DexSellOrders.Where(x => x.TokenId == askSymbol)
.Where(x => x.UnitPrice <= price)
.ToListAsync();
var remianAmount = askAmount;
foreach (var x in orders)
{
if (remianAmount <= 0)
{
break;
}
var amount = x.Bid < remianAmount ? x.Bid : remianAmount;
x.Bid -= amount; // 1个苹果
x.Ask -= amount * x.UnitPrice; // 2元
order.Ask -= amount;
order.Bid -= amount * x.UnitPrice;
remianAmount -= amount;
await TransferAsync(x.Account, amount *x.UnitPrice, bidSymbol);
await TransferAsync(account, amount, askSymbol);
db.MatchReceipts.Add(new MatchReceipt
{
IsSellMatch = false,
Asker = account,
Ask = amount,
Bidder = x.Account,
Bid = amount * x.UnitPrice,
UnitPrice = price,
TokenId = askSymbol,
Time = DateTime.Now
});
if (x.Ask == 0 || x.Bid == 0)
{
db.Remove(x);
}
}
if (order.Ask != 0 && order.Bid != 0)
{
db.DexBuyOrders.Add(order);
}
await db.SaveChangesAsync();
}
}
