Binance.TradeRobot.API/SDKAdapter/APIClient/BinanceAPIClient.cs

using Binance.Net.Clients;
using Binance.Net.Objects;
using Binance.TradeRobot.Model.Base;
using CryptoExchange.Net.Authentication;
using SDKAdapter.Model;
using System;
using System.Collections.Generic;
using System.Linq;

namespace SDKAdapter.APIClient
{
    public class BinanceAPIClient : BaseAPIClient
    {
        private BinanceClient binanceClient;

        public BinanceAPIClient(long uid, string apiKey, string secret) : base(uid, apiKey, secret)
        {
            var spotClientOption = new BinanceApiClientOptions()
            {
                BaseAddress = "https://api.binance.com",
                ApiCredentials = new ApiCredentials(apiKey, secret)
            };
            var usdFuturesClientOption = new BinanceApiClientOptions()
            {
                BaseAddress = "https://fapi.binance.com",
                ApiCredentials = new ApiCredentials(apiKey, secret)
            };
            binanceClient = new BinanceClient(new BinanceClientOptions()
            {
                UsdFuturesApiOptions = usdFuturesClientOption,
                SpotApiOptions = spotClientOption
            });
        }

        public override IList<IsolatedMarginAccountAsset> GetIsolatedMarginAccountAssets()
        {
            var r = binanceClient.SpotApi.Account.GetIsolatedMarginAccountAsync().Result;
            if (!r.Success)
                throw new Exception($"获取逐仓杠杆账户信息失败 {r.Error?.Message}");

            return r.Data.Assets.Select(asset => new IsolatedMarginAccountAsset()
            {
                Symbol = asset.Symbol,

                BaseAsset = asset.BaseAsset.Asset,
                BaseBorrowed = asset.BaseAsset.Borrowed,
                BaseFree = asset.BaseAsset.Free,
                BaseInterest = asset.BaseAsset.Interest,
                BaseLocked = asset.BaseAsset.Locked,
                BaseNetAsset = asset.BaseAsset.NetAsset,

                QuoteAsset = asset.QuoteAsset.Asset,
                QuoteBorrowed = asset.QuoteAsset.Borrowed,
                QuoteFree = asset.QuoteAsset.Free,
                QuoteInterest = asset.QuoteAsset.Interest,
                QuoteLocked = asset.QuoteAsset.Locked,
                QuoteNetAsset = asset.QuoteAsset.NetAsset
            }).ToList();
        }

        public override decimal QueryMaxLoanAmount(string symbol)
        {
            var r = binanceClient.SpotApi.Account.GetMarginMaxBorrowAmountAsync("USDT", symbol).Result;
            if (!r.Success)
                throw new Exception($"查询最大借币额度失败 {r.Error?.Message}");
            return r.Data.Quantity;
        }

        public override IsolatedMarginLoanResponse IsolatedMarginLoan(string symbol, decimal loanAmount)
        {
            var r = binanceClient.SpotApi.Account.MarginBorrowAsync("USDT", loanAmount, true, symbol).Result;
            if (!r.Success)
                throw new Exception($"借币失败 {r.Error?.Message}");

            var isolatedMarginAccountAssetList = GetIsolatedMarginAccountAssets();
            var currentAsset = isolatedMarginAccountAssetList.FirstOrDefault(s => s.Symbol == symbol);
            if (currentAsset == null)
                throw new Exception($"借币已完成,但未查询到{symbol}的资产信息 {r.Error?.Message}");
            return new IsolatedMarginLoanResponse()
            {
                CurrentLoanAmount = loanAmount,
                AccountLoanAmount = currentAsset.QuoteBorrowed
            };
        }

        public override decimal IsolatedMarginRepay(string symbol, decimal repayAmount)
        {
            var r = binanceClient.SpotApi.Account.MarginRepayAsync("USDT", repayAmount, true, symbol).Result;
            if (!r.Success)
                throw new Exception($"还币失败 {r.Error?.Message}");
            var txId = r.Data.TransactionId;

            var r1 = binanceClient.SpotApi.Account.GetMarginRepaysAsync("USDT", txId, isolatedSymbol: symbol).Result;
            if (!r1.Success)
                throw new Exception($"还币成功,查询还贷记录失败 {r1.Error?.Message}");
            try
            {
                return r1.Data.Rows.ToList().Sum(x => x.Interest);
            }
            catch
            {
                return 0M;
            }

        }

        public override long IsolatedMarginPlaceOrder(string symbol,
                                                      Enums.TradeDirection tradeDirection,
                                                      Enums.OrderType orderType,
                                                      decimal? quantity,
                                                      decimal? quoteAmount,
                                                      decimal? price,
                                                      decimal? stopPrice,
                                                      string newClientOrderId)
        {
            var binanceOrderSite = (Binance.Net.Enums.OrderSide)(int)tradeDirection;
            var binanceOrderType = (Binance.Net.Enums.SpotOrderType)(int)orderType;
            Binance.Net.Enums.TimeInForce? timeInForce = null;
            if (orderType == Enums.OrderType.STOP_LOSS_LIMIT)
                timeInForce = Binance.Net.Enums.TimeInForce.GoodTillCanceled;

            var r = binanceClient.SpotApi.Trading.PlaceMarginOrderAsync(symbol,
                                                                        binanceOrderSite,
                                                                        binanceOrderType,
                                                                        quantity,
                                                                        quoteAmount,
                                                                        newClientOrderId,
                                                                        price: price,
                                                                        timeInForce: timeInForce,
                                                                        stopPrice: stopPrice,
                                                                        isIsolated: true,
                                                                        orderResponseType: Binance.Net.Enums.OrderResponseType.Acknowledge).Result;
            if (!r.Success)
                throw new Exception($"下单失败 {orderType} {tradeDirection} {r.Error?.Message}");
            return r.Data.Id;
        }
    }
}