using YLErp.Enums;
using YLErp.Modules.PricingModule;

namespace YLErp.Web.WebAPI.Controllers
{
    /// <summary>
    /// 期权定价
    /// </summary>
    public class PricingController : BaseController
    {
        /// <summary>
        ///  计算pv margin greeks
        /// </summary>
        [HttpPost("m/api/pricing/calc-basic")]
        public JsonResult Calc(OtcOptionTradeFull req)
        {
            if (req is null)
            {
                return JsonError("错误:请求参数为空");
            }

            var trade = InitialTrade(req);

            var result = new PriceCalcService(CurUser).CalcOptionPrice(trade, false, CalcScenarioEnum.Pricing, true);

            return JsonSuccess(new { result.calcResult, result.Day1Pnl });
        }

        /// <summary>
        ///  根据权利金反算
        /// </summary>
        [HttpPost("m/api/pricing/calc-target")]
        public JsonResult CalcTargetValue(OtcOptionTradeFull req, int calTarget)
        {
            if (req is null)
            {
                return JsonError("错误:请求参数为空");
            }

            var trade = InitialTrade(req);
            trade.TradePrice = trade.TradeSinglePrice;

            var targetValue = new PriceCalcService(CurUser).CalcSnowballSpecialistTargetValue(trade, calTarget);
            //敲出票息和红利票息
            if (calTarget == 1)
            {
                var obsInfos = trade.KOObservationDates.Split(';');
                var kORebates = obsInfos[2].Split(',');
                trade.KOObservationDates = string.Join(";", new[] {
                    obsInfos[0],
                    obsInfos[1],
                    string.Join(",",kORebates.Select(x => String.IsNullOrEmpty(x) ? targetValue.ToString() : x))
                });
                trade.Coupon = targetValue;
            }
            //敲出票息
            else if (calTarget == 2)
            {
                var obsInfos = trade.KOObservationDates.Split(';');
                var kORebates = obsInfos[2].Split(',');
                trade.KOObservationDates = string.Join(";", new[] {
                    obsInfos[0],
                    obsInfos[1],
                    string.Join(",",kORebates.Select(x => String.IsNullOrEmpty(x) ? targetValue.ToString() : x))
                });
            }
            //红利票息
            else if (calTarget == 3)
            {
                trade.Coupon = targetValue;
            }

            var result = new PriceCalcService(CurUser).CalcOptionPrice(trade, false, CalcScenarioEnum.Pricing, false);

            return JsonSuccess(new { TargetValue = double.IsNaN(targetValue) ? 0 : targetValue, result.calcResult });
        }

        /// <summary>
        /// 定价页面初始值
        /// </summary>
        [HttpPost("m/api/pricing/init-values")]
        public JsonResult GetInitValues(PricingInitValuesRequest req)
        {
            var result = new PricingDataService(CurUser).GetPricingInitValues(req);
            return JsonSuccess(result);
        }

        /// <summary>
        /// 初始化交易参数
        /// </summary>
        /// <param name="req"></param>
        /// <returns></returns>
        private OtcOptionTradeFull InitialTrade(OtcOptionTradeFull trade)
        {
            //OtcOptionTradeFull trade = new OtcOptionTradeFull();
            //YLAutoMapper.Map<OptionPricingModelV3, OtcOptionTradeFull>(req, trade);

            // initial trade params
            trade.PrepaymentUsed = true;
            if (string.IsNullOrEmpty(trade.CouponDayCount) || trade.CouponDayCount == "非年化")
            {
                trade.CouponDayCount = string.Empty;
                trade.IsFixedCoupon = true;
            }
            trade.TradeDate = trade.StartDate;
            trade.AnnualizeFactor2 = 1;
            trade.NumOfSmoothingDays = 1;
            trade.ParentTradeId = 0;
            trade.TradeCloseVolatility = trade.Vol;
            trade.TradeOpenVolatility = trade.Vol;
            trade.AnnualizeFactor = 1;
            trade.ParticipationRate = 1;
            trade.IsGroup = 0;
            trade.CountRatio = 1;
            if (!trade.MetaDic.ContainsKey("敲入观察周期"))
            {
                trade.MetaDic.Add("敲入观察周期", "1D");
            }
            return trade;
        }
    }

}