namespace YLErp.Modules.TradeModule.AccumulatorOptionModule
{
    /// <summary>
    /// 
    /// </summary>
    public static class TradeAccumulatorHelper
    {
        #region----换月----

        public static IEnumerable<TradeAccumulatorChangeData> GetChangeDatas(IEnumerable<TradeAction> actions)
        {
            if (actions == null)
            {
                return Enumerable.Empty<TradeAccumulatorChangeData>();
            }

            return actions.Where(x => x.ActionType == TradeActionType.AccumulatorChange)
                .Select(x => JsonHelper.Deserialize<TradeAccumulatorChangeData>(x.ActionData)).ToArray();
        }

        /// <summary>
        /// 获取默认的换月数据
        /// </summary>
        public static TData GetDefaultChangeData<TData>(DateTime valueDate, OtcTradeBase td, trade_accumulator_option tdAcc)
            where TData : TradeAccumulatorChangeData, new()
        {
            return new TData
            {
                ValueDate = valueDate.OtcFormatDate(),
                KOBarrier = tdAcc.KOBarrier,
                KOObservationDates = tdAcc.KOObservationDates,
                KOObservationSettleDates = tdAcc.KOObservationSettleDates,
                Strike = td.Strike ?? 0,
                UnderlyingCode = td.UnderlyingCode
            };
        }

        /// <summary>
        /// 使用换月数据还原交易数据
        /// </summary>
        public static void RestoreAccumulatorChangeData(OtcOptionTradeFull td, string changeDataJson, underlying_manager um = null)
        {
            if (td is null)
            {
                throw new ArgumentNullException(nameof(td));
            }

            if (string.IsNullOrWhiteSpace(changeDataJson))
            {
                throw new ServiceException("换月设置数据为空,请检查数据是否损坏!");
            }

            var changeData = JsonHelper.Deserialize<TradeAccumulatorChangeData>(changeDataJson);

            if (um == null)
            {
                um = DataCacheProvider.GetUnderlyingDataSource().GetData(changeData.UnderlyingCode);

                if (um == null)
                {
                    throw new ServiceException("找不到标的信息:" + changeData.UnderlyingCode);
                }
            }

            td.UnderlyingId = um.id;
            td.UnderlyingCode = changeData.UnderlyingCode;
            td.UnderlyingAssetClass = um.UnderlyingType;
            td.UnderlyingAssetName = um.UnderlyingName;
            td.UnderlyingInstrumentType = um.UnderlyingInstrumentType;

            td.Strike = changeData.Strike;
            td.KOBarrier = changeData.KOBarrier;
            td.KOObservationDates = changeData.KOObservationDates;
            td.KOObservationSettleDates = changeData.KOObservationSettleDates;
        }

        /// <summary>
        /// 使用换月数据还原交易数据
        /// </summary>
        public static void RestoreAccumulatorChangeData(trade td, string changeDataJson, underlying_manager um = null)
        {
            if (td is null)
            {
                throw new ArgumentNullException(nameof(td));
            }

            if (string.IsNullOrWhiteSpace(changeDataJson))
            {
                throw new ServiceException("换月设置数据为空,请检查数据是否损坏!");
            }

            var changeData = JsonHelper.Deserialize<TradeAccumulatorChangeData>(changeDataJson);

            RestoreAccumulatorChangeData(td, td.trade_accumulator_option, changeData, um);
        }

        /// <summary>
        /// 使用换月数据还原交易数据
        /// </summary>
        public static void RestoreAccumulatorChangeData(OtcTradeBase td, trade_accumulator_option tdAcc, TradeAccumulatorChangeData changeData, underlying_manager um = null)
        {
            if (td is null)
            {
                throw new ArgumentNullException(nameof(td));
            }

            if (changeData is null)
            {
                throw new ArgumentNullException(nameof(changeData));
            }

            if (um == null)
            {
                um = DataCacheProvider.GetUnderlyingDataSource().GetData(changeData.UnderlyingCode);
                if (um == null)
                {
                    throw new ServiceException("找不到标的信息:" + changeData.UnderlyingCode);
                }
            }

            td.UnderlyingId = um.id;
            td.UnderlyingCode = changeData.UnderlyingCode;
            td.UnderlyingAssetClass = um.UnderlyingType;
            td.UnderlyingAssetName = um.UnderlyingName;
            td.UnderlyingInstrumentType = um.UnderlyingInstrumentType;
            td.MaturityDate = um.MaturityDate;
            td.Strike = changeData.Strike;

            if (tdAcc != null)
            {
                tdAcc.KOBarrier = changeData.KOBarrier;
                tdAcc.KOObservationDates = changeData.KOObservationDates;
                tdAcc.KOObservationSettleDates = changeData.KOObservationSettleDates;
            }
        }

        /// <summary>
        /// 使用换月数据还原交易数据
        /// </summary>
        public static void RestoreAccumulatorChangeData(OtcTradeBase td, trade_accumulator_option tdAcc, string changeDataJson, underlying_manager um = null)
        {
            if (string.IsNullOrWhiteSpace(changeDataJson))
            {
                return;
            }

            var changeData = JsonHelper.Deserialize<TradeAccumulatorChangeData>(changeDataJson);

            RestoreAccumulatorChangeData(td, tdAcc, changeData, um);
        }

        #endregion
    }
}