using Binance.TradeRobot.Common.DI;
using Binance.TradeRobot.Common.Extensions;
using Binance.TradeRobot.Model.Base;
using Binance.TradeRobot.Model.Db;
using Binance.TradeRobot.Model.Dto;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Yitter.IdGenerator;

namespace Binance.TradeRobot.Business.Exchange
{
    [BatchRegistration(ServiceLifetime.Singleton, RegistrationType.Self)]
    public class ExchangeBusiness : BaseBusiness
    {
        public ExchangeBusiness(IFreeSql fsql, NLogManager logManager, IIdGenerator idGenerator, IMemoryCache memoryCache) : base(fsql, logManager, idGenerator, memoryCache) { }

        public void AddExchangeAccount(AddExchangeAccountRequest addExchangeAccountRequest)
        {
            if (addExchangeAccountRequest.Id == 0 ||
                string.IsNullOrEmpty(addExchangeAccountRequest.LoginName) ||
                string.IsNullOrEmpty(addExchangeAccountRequest.APIKey) ||
                string.IsNullOrEmpty(addExchangeAccountRequest.SecretKey))
                throw new BusinessException("交易所账号参数有误");
            if (fsql.Select<ExchangeAccount>(addExchangeAccountRequest.Id).Any())
                throw new BusinessException("交易所账号重复");
            if (fsql.Select<ExchangeAPIKey>().Where(k => k.APIKey == addExchangeAccountRequest.APIKey || k.SecretKey == addExchangeAccountRequest.SecretKey).Any())
                throw new BusinessException("重复的APIKey或SecretKey");

            var exchangeAccount = addExchangeAccountRequest.Map<ExchangeAccount>();
            if (addExchangeAccountRequest.TradePolicy == Enums.TradePolicy.金字塔)
                exchangeAccount.BusinessType = Enums.BusinessType.UPrep;

            if (addExchangeAccountRequest.TradePolicy == Enums.TradePolicy.动量趋势v2)
                exchangeAccount.BusinessType = Enums.BusinessType.Spot_Margin;

            var exchangeAPIKey = new ExchangeAPIKey()
            {
                Id = idGenerator.NewLong(),
                AccountId = addExchangeAccountRequest.Id,
                APIKey = addExchangeAccountRequest.APIKey,
                SecretKey = addExchangeAccountRequest.SecretKey
            };

            fsql.Transaction(() =>
            {
                fsql.Insert(exchangeAPIKey).ExecuteAffrows();
                fsql.Insert(exchangeAccount).ExecuteAffrows();
            });

        }

        public void AddExchangeAPIKey(AddExchangeAPIKeyRequest addExchangeAPIKeyRequest)
        {
            if (addExchangeAPIKeyRequest.AccountId == 0 ||
                string.IsNullOrEmpty(addExchangeAPIKeyRequest.APIKey) ||
                string.IsNullOrEmpty(addExchangeAPIKeyRequest.SecretKey))
                throw new BusinessException("参数有误");

            if (fsql.Select<ExchangeAPIKey>().Where(k => k.APIKey == addExchangeAPIKeyRequest.APIKey || k.SecretKey == addExchangeAPIKeyRequest.SecretKey).Any())
                throw new BusinessException("重复的APIKey或SecretKey");

            var exchangeAPIKey = addExchangeAPIKeyRequest.Map<ExchangeAPIKey>();
            exchangeAPIKey.Id = idGenerator.NewLong();
            fsql.Insert(exchangeAPIKey).ExecuteAffrows();
        }

        public IList<ExchangeAccountResponse> GetExchangeAccountList(Enums.TradePolicy tradePolicy)
        {
            var exchangeAccountList = fsql.Select<ExchangeAccount>().Where(ea => ea.TradePolicy == tradePolicy).ToList().Map<IList<ExchangeAccountResponse>>();
            var accountIdList = exchangeAccountList.Select(ea => ea.Id);
            var exchangeAPIKeyList = fsql.Select<ExchangeAPIKey, Robot>().LeftJoin((k, r) => k.RobotId == r.Id)
                                                                         .Where((k, r) => accountIdList.Contains(k.AccountId))
                                                                         .ToList((k, r) => new ExchangeAPIKeyResponse()
                                                                         {
                                                                             Id = k.Id,
                                                                             AccountId = k.AccountId,
                                                                             APIKey = k.APIKey,
                                                                             SecretKey = k.SecretKey,
                                                                             CreateTime = k.CreateTime,
                                                                             RobotId = k.RobotId,
                                                                             RobotSymbol = r.Symbol
                                                                         });

            var waitList = new List<WaitHandle>();
            foreach (var exchangeAccount in exchangeAccountList)
            {
                var currentExchangeAccountAPIKeyList = exchangeAPIKeyList.Where(k => k.AccountId == exchangeAccount.Id);
                if (currentExchangeAccountAPIKeyList.Count() == 0)
                    continue;
                exchangeAccount.ExchangeAPIKeyList.AddRange(currentExchangeAccountAPIKeyList);

                var ewh = new ManualResetEvent(false);
                waitList.Add(ewh);
                Task.Factory.StartNew(() => GetExchangeAssets(exchangeAccount, ewh));
            }
            WaitHandle.WaitAll(waitList.ToArray(), 5000);
            return exchangeAccountList;
        }

        private void GetExchangeAssets(ExchangeAccountResponse exchangeAccount, EventWaitHandle ewh)
        {
            try
            {
                var binanceClient = GetBinanceClient(exchangeAccount.ExchangeAPIKeyList[0].APIKey, exchangeAccount.ExchangeAPIKeyList[0].SecretKey);
                if (exchangeAccount.BusinessType == Enums.BusinessType.UPrep)
                {
                    var result = binanceClient.UsdFuturesApi.Account.GetBalancesAsync().Result;
                    if (result.Success)
                    {
                        exchangeAccount.UPrepUSDT = result.Data.FirstOrDefault(b => b.Asset == "USDT")?.WalletBalance ?? 0;
                    }
                }
                else if (exchangeAccount.BusinessType == Enums.BusinessType.Spot)
                {

                }
                else if (exchangeAccount.BusinessType == Enums.BusinessType.Spot_Margin)
                {

                }
            }
            catch (Exception ex)
            {

            }
            finally
            {
                ewh.Set();
            }
        }
    }
}