using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using YLErp.DBModels;
using YLErp.Modules.BasicDataModule;
using YLErp.Modules.CalculationModule;
using YLErp.Modules.TradeMsgOutputModule.Dto;

namespace YLErp.Modules.TradeMsgOutputModule
{
    /// <summary>
    /// 交易持仓PV导出服务
    /// </summary>
    public class TradePvOutputService:BaseTradeAfterEodOutputService
    {
        public List<TradePositionPV> GetTradePositionPV<T>(DateTime valueDate) where T: EodTradePosition
        {
            CheckEodStatus(valueDate);

            var result = new List<TradePositionPV>();

            List<TradePositionPvDto> positionPVList = null;
            Dictionary<int, TradeDicSimpleDto> tradeDic = null;
            
            using (var db = DbContextFactory.GetYLDbContext())
            {
                positionPVList = db.Set<T>().Where(p => p.ValueDate == valueDate && p.TradeId > 0).Select(p => new TradePositionPvDto
                {
                    TradeId = p.TradeId,
                    TradeType = p.TradeType,
                    PV = p.Pv
                }).ToList();
                if(positionPVList != null && positionPVList.Count > 0)
                {
                    var tradeIds = positionPVList.Select(p => p.TradeId).Distinct().ToList();
                    tradeDic = GetEodTradeDicSimpleDic(db, valueDate, tradeIds);
                }
            }
            if (positionPVList == null || tradeDic == null || positionPVList.Count == 0 || tradeDic.Count == 0)
            {
                return result;
            }
            Dictionary<int, AssetUnitDto> assetUnitDic = null;
            var assertIds = tradeDic.Values.Select(p => p.AssetId).Distinct().ToList();
            if(assertIds!=null&& assertIds.Count > 0)
            {
                assetUnitDic = new AssetUnitDataService(new OptUserInfo(0, "系统", OptUserFrom.System)).GetAssertByAssertIds(assertIds);
            }
            if(assetUnitDic== null)
            {
                assetUnitDic = new Dictionary<int, AssetUnitDto>();
            }

            Dictionary<int, double> swapFixedInterestRatePVDic = null;
            var swapTradeIds = positionPVList.Where(p => ConsGlobal.TradeType.PayoffSwap.Equals(p.TradeType)).Select(p => p.TradeId).ToList();
            if (swapTradeIds != null && swapTradeIds.Count > 0)
            {
                swapFixedInterestRatePVDic = PayoffSwapCalcService.GetFixedInterestRatePV(swapTradeIds, valueDate);
            }
            if (swapFixedInterestRatePVDic == null)
            {
                swapFixedInterestRatePVDic = new Dictionary<int, double>();
            }

            positionPVList.ForEach(p =>
            {
                if (tradeDic.ContainsKey(p.TradeId))
                {
                    var tradeDto = tradeDic[p.TradeId];
                    var model = new TradePositionPV
                    {
                        TradeNumber = tradeDto.TradeNumber,
                        ValueDate = valueDate,
                        TradeType = p.TradeType,
                        PV = p.PV
                    };
                    if (ConsGlobal.TradeType.PayoffSwap.Equals(model.TradeType))
                    {
                        model.FixedInterestRatePV = swapFixedInterestRatePVDic.ContainsKey(p.TradeId) ? swapFixedInterestRatePVDic[p.TradeId] : 0;
                        model.EquitySubjectPV = model.PV - model.FixedInterestRatePV;
                    }
                    if (tradeDto.AssetId > 0&&assetUnitDic.ContainsKey(tradeDto.AssetId))
                    {
                        model.AssetUnitGroupName = assetUnitDic[tradeDto.AssetId].GroupName;
                    }
                    result.Add(model);
                }
            });

            return result;
        }

        private Dictionary<int, double> GetFixedInterestRatePV(List<int> tradeIds, DateTime valueDate)
        {
            var result = new Dictionary<int, double>();
            List<trade_swap> tradeSwapList = null;
            List<trade_cash> tradeCashList = null;
            List<trade_cash_swap> tradeCashSwapList = null;
            using (var db = DbContextFactory.GetYLDbContext())
            {
                tradeSwapList = db.trade_swap.AsNoTracking().Where(p => tradeIds.Contains(p.TradeId)).ToList();
                tradeCashList = db.trade_cash.AsNoTracking().Where(y => tradeIds.Contains(y.TradeId) && y.Action == "系统操作-互换" && y.ValidState != "InValid" && !y.IsDeleted && y.ValueDate <= valueDate).ToList();
                tradeCashSwapList = db.trade_cash_swap.AsNoTracking().Where(p => tradeIds.Contains(p.TradeId)).ToList();
            }
            if (tradeSwapList == null)
            {
                tradeSwapList = new List<trade_swap>();
            }
            if (tradeCashList == null)
            {
                tradeCashList = new List<trade_cash>();
            }
            if (tradeCashSwapList == null)
            {
                tradeCashSwapList = new List<trade_cash_swap>();
            }
            tradeIds.ForEach(p =>
            {
                var tradeSwap = tradeSwapList.FirstOrDefault(d => d.TradeId == p);
                if (tradeSwap != null)
                {
                    var tradeCashIds = tradeCashList.Where(d => d.TradeId == p).Select(d => d.id).ToList();
                    if (tradeCashIds != null && tradeCashIds.Count > 0)
                    {
                        double amount = 0;
                        if (!tradeSwap.IsGetFloatingProfit)
                        {
                            amount = tradeCashSwapList.Where(d => tradeCashIds.Contains(d.TradeCashId)).Sum(d => (double)d.GetAmount);
                        }
                        if (!tradeSwap.IsPayFloatingProfit)
                        {
                            amount= -tradeCashSwapList.Where(d => tradeCashIds.Contains(d.TradeCashId)).Sum(d => (double)d.PayAmount);
                        }
                        result.Add(p, amount);
                    }
                }

            });

            return result;
        }


    }
}