public void Init()
{
instance = new WalletApi();
}
public void Run()
{
const string settle = "usdt";
const string contract = "BTC_USDT";
Configuration config = new Configuration
{
BasePath = _runConfig.HostUsed,
ApiV4Key = _runConfig.ApiKey,
ApiV4Secret = _runConfig.ApiSecret,
};
FuturesApi futuresApi = new FuturesApi(config);
// update position leverage
const string leverage = "3";
futuresApi.UpdatePositionLeverage(settle, contract, leverage);
// retrieve position information
long positionSize = 0L;
try
{
Position position = futuresApi.GetPosition(settle, contract);
positionSize = position.Size;
}
catch (GateApiException e)
{
// ignore no position error
if (!"POSITION_NOT_FOUND".Equals(e.ErrorLabel))
{
throw;
}
}
// set order size
Contract futuresContract = futuresApi.GetFuturesContract(settle, contract);
long orderSize = 10L;
if (futuresContract.OrderSizeMin > orderSize)
{
orderSize = futuresContract.OrderSizeMin;
}
if (positionSize < 0)
{
// if short, set size to negative
orderSize = -orderSize;
}
// example to update risk limit
string riskLimit =
(Convert.ToDecimal(futuresContract.RiskLimitBase) + Convert.ToDecimal(futuresContract.RiskLimitStep))
.ToString(CultureInfo.InvariantCulture);
futuresApi.UpdatePositionRiskLimit(settle, contract, riskLimit);
// retrieve last price to calculate margin needed
List <FuturesTicker> tickers = futuresApi.ListFuturesTickers(settle, contract);
Debug.Assert(tickers.Count == 1);
string lastPrice = tickers[0].Last;
Console.WriteLine("last price of contract {0}: {1}", contract, lastPrice);
decimal margin = decimal.Round(orderSize * Convert.ToDecimal(lastPrice) *
Convert.ToDecimal(futuresContract.QuantoMultiplier) / Convert.ToDecimal(leverage) * 1.1m, 8,
MidpointRounding.AwayFromZero);
Console.WriteLine("needs margin amount: " + margin.ToString(CultureInfo.InvariantCulture));
// if balance not enough, transfer from spot account
string available = "0";
try
{
available = futuresApi.ListFuturesAccounts(settle).Available;
}
catch (GateApiException e)
{
if (!"USER_NOT_FOUND".Equals(e.ErrorLabel))
{
throw;
}
}
Console.WriteLine("Futures account available: {0} {1}", available, settle.ToUpper());
if (Convert.ToDecimal(available).CompareTo(margin) < 0)
{
if (_runConfig.UseTestNet)
{
Console.Error.WriteLine("TestNet account balance not enough, make a transferal on web");
return;
}
Transfer transfer = new Transfer(currency: settle.ToUpper(), amount: margin.ToString(CultureInfo.InvariantCulture))
{
From = Transfer.FromEnum.Spot,
To = Transfer.ToEnum.Futures,
};
WalletApi walletApi = new WalletApi(config);
walletApi.Transfer(transfer);
}
// example to cancel all open orders in contract
futuresApi.CancelFuturesOrders(settle, contract, "");
FuturesOrder futuresOrder = new FuturesOrder(contract)
{
Size = orderSize,
Price = "0",
Tif = FuturesOrder.TifEnum.Ioc,
};
FuturesOrder orderResponse;
try
{
orderResponse = futuresApi.CreateFuturesOrder(settle, futuresOrder);
}
catch (GateApiException e)
{
Console.Error.WriteLine(e);
return;
}
Console.WriteLine("Order {0} created with status {1}", orderResponse.Id, orderResponse.Status);
if (FuturesOrder.StatusEnum.Open.Equals(orderResponse.Status))
{
FuturesOrder order = futuresApi.GetFuturesOrder(settle, orderResponse.Id.ToString());
Console.WriteLine("Order {0} status {1}, total size {2}, left {3}", order.Id, order.Status, order.Size,
order.Left);
futuresApi.CancelFuturesOrder(settle, order.Id.ToString());
Console.WriteLine("order {0} cancelled", order.Id);
}
else
{
List <MyFuturesTrade> orderTrades = futuresApi.GetMyTrades(settle, contract, orderResponse.Id);
Debug.Assert(orderTrades.Count > 0);
long tradeSize = 0L;
foreach (MyFuturesTrade t in orderTrades)
{
Debug.Assert(t.OrderId != null && t.OrderId.Equals(orderResponse.Id.ToString()));
tradeSize += t.Size;
Console.WriteLine("order {0} filled size {1} with price {2}", t.OrderId, t.Size, t.Price);
}
Debug.Assert(tradeSize == orderSize);
// example to update position margin
futuresApi.UpdatePositionMargin(settle, contract, "0.01");
}
}
public HomeController(WalletApi walletApi, InterestCalculatorApi interestApi, IDictionary <string, decimal> interestRates)
{
_walletApi = walletApi;
_interestApi = interestApi;
_interestRates = interestRates;
}
public void Run()
{
const string currencyPair = "BTC_USDT";
string currency = currencyPair.Split('_')[1];
Configuration config = new Configuration
{
// Setting basePath is optional. It defaults to https://api.gateio.ws/api/v4
BasePath = _runConfig.HostUsed,
ApiV4Key = _runConfig.ApiKey,
ApiV4Secret = _runConfig.ApiSecret,
};
SpotApi spotApi = new SpotApi(config);
MarginApi marginApi = new MarginApi(config);
WalletApi walletApi = new WalletApi(config);
List <Ticker> tickers = spotApi.ListTickers(currencyPair);
Debug.Assert(tickers.Count == 1);
string lastPrice = tickers[0].Last;
Debug.Assert(lastPrice != null);
Console.WriteLine("currency pair {0} last price: {1}", currencyPair, lastPrice);
List <MarginCurrencyPair> pairs = marginApi.ListMarginCurrencyPairs();
MarginCurrencyPair pair = pairs.Find(p => currencyPair.Equals(p.Id));
decimal loanAmount = pair.MinQuoteAmount == null ? 0 : Convert.ToDecimal(pair.MinQuoteAmount);
if (pair.MinBaseAmount != null)
{
decimal minLoanAmount = Convert.ToDecimal(pair.MinBaseAmount) * Convert.ToDecimal(lastPrice);
if (loanAmount.CompareTo(minLoanAmount) < 0)
{
loanAmount = minLoanAmount;
}
}
Console.WriteLine("minimum loan amount in currency pair {0}: {1} {2}", currencyPair, loanAmount, currency);
// example to lend
Random random = new Random();
List <FundingAccount> fundingAccounts = marginApi.ListFundingAccounts(currency);
decimal lendAmount = decimal.Round(loanAmount + Convert.ToDecimal(random.NextDouble()), 8,
MidpointRounding.AwayFromZero);
if (fundingAccounts.Count == 1 && Convert.ToDecimal(fundingAccounts[0].Available).CompareTo(lendAmount) >= 0)
{
// lend with maximum rate
Loan lendingLoan = new Loan(currency: currency, amount: lendAmount.ToString(CultureInfo.InvariantCulture))
{
AutoRenew = false,
Days = 10,
Rate = "0.002",
Side = Loan.SideEnum.Lend,
};
Loan createdLoan = marginApi.CreateLoan(lendingLoan);
Console.WriteLine("place a lending loan {0} with currency {1}, rate {2}, amount {3}", createdLoan.Id,
createdLoan.Currency, createdLoan.Rate, createdLoan.Amount);
Loan loanResult = marginApi.GetLoan(createdLoan.Id, "lend");
if (Loan.StatusEnum.Loaned.Equals(loanResult.Status))
{
List <LoanRecord> records = marginApi.ListLoanRecords(loanResult.Id);
foreach (LoanRecord r in records)
{
Console.WriteLine("Loan {0} is borrowed with record ID {1}, amount {2}, current status: {3}",
r.LoanId, r.Id, r.Amount, r.Status);
}
}
else
{
marginApi.CancelLoan(createdLoan.Id, currency);
Console.WriteLine("Lending loan {0} is cancelled", createdLoan.Id);
}
}
decimal margin = decimal.Round(loanAmount / (Convert.ToDecimal(pair.Leverage) - 1), 8,
MidpointRounding.AwayFromZero);
List <MarginAccount> accounts = marginApi.ListMarginAccounts(currencyPair);
Debug.Assert(accounts.Count == 1);
decimal available = Convert.ToDecimal(accounts[0].Quote.Available);
Console.WriteLine("Available margin balance of currency {0} in currency pair {1}: {2}", currency, currencyPair, available);
if (margin.CompareTo(available) > 0)
{
// margin balance not enough, transfer to margin account
Transfer transfer = new Transfer(currency: currency, amount: (margin - available).ToString(CultureInfo.InvariantCulture))
{
CurrencyPair = currencyPair,
Currency = currency,
From = Transfer.FromEnum.Spot,
To = Transfer.ToEnum.Margin,
};
walletApi.Transfer(transfer);
Console.WriteLine("Transferred {0} {1} to margin account in currency pair {2}", transfer.Amount,
transfer.Currency, transfer.CurrencyPair);
}
// find minimum rate available
decimal minRate = marginApi.ListFundingBook(currency)
.FindAll(x => loanAmount.CompareTo(Convert.ToDecimal(x.Amount)) < 0)
.Min(x => Convert.ToDecimal(x.Rate));
// example to borrow with minimum loan rate
decimal borrowAmount = decimal.Round(loanAmount + Convert.ToDecimal(random.NextDouble()), 8,
MidpointRounding.AwayFromZero);
Loan loan = new Loan(currency: currency, amount: borrowAmount.ToString(CultureInfo.InvariantCulture))
{
Side = Loan.SideEnum.Borrow,
Rate = minRate.ToString(CultureInfo.InvariantCulture),
Days = 10,
CurrencyPair = currencyPair,
};
Loan borrowed = marginApi.CreateLoan(loan);
Console.WriteLine("Borrowed {0} {1} in currency pair {2} with rate {3}, id {4}", borrowed.Amount,
borrowed.Currency, borrowed.CurrencyPair, borrowed.Rate, borrowed.Id);
Debug.Assert(borrowed.Status == Loan.StatusEnum.Loaned);
// create margin order
string orderAmount = spotApi.GetCurrencyPair(currencyPair).MinQuoteAmount;
Order order = new Order(currencyPair: currencyPair, amount: orderAmount ?? "1", price: lastPrice)
{
Account = Order.AccountEnum.Margin,
AutoBorrow = false,
Side = Order.SideEnum.Sell,
};
try
{
Order createdOrder = spotApi.CreateOrder(order);
Console.WriteLine("order created with id {0}, status {1}", createdOrder.Id, createdOrder.Status);
}
catch (GateApiException e)
{
Console.Error.WriteLine("failed to create margin order: {0}", e);
}
RepayRequest repayRequest = new RepayRequest(currencyPair, currency, RepayRequest.ModeEnum.All);
marginApi.RepayLoan(borrowed.Id, repayRequest);
foreach (Repayment r in marginApi.ListLoanRepayments(borrowed.Id))
{
Console.WriteLine("loan {0} repaid {1} with interest {2}", borrowed.Id, r.Principal, r.Interest);
}
}
public HomeController()
{
_api = new WalletApi();
}
