using BitgetAPI.Data;
using BitgetAPI.Data.IndicatorData;
using DevExpress.Utils.Extensions;
using DevExpress.XtraBars.Ribbon.Gallery;
using DevExpress.XtraBars.ViewInfo;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media.Media3D;
using static BitgetAPI.CommonProperty;
using static DevExpress.Utils.Diagnostics.GUIResources;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.ToolTip;

namespace BitgetApi.IndicatorConditionSetup
{
    public class IchimokuResult
    {
        public DateTime Time { get; set; }
        public double TenkanSen { get; set; }      // 전환선
        public double KijunSen { get; set; }       // 기준선
        public double SenkouSpanA { get; set; }    // 선행스팬1
        public double SenkouSpanB { get; set; }    // 선행스팬2
        public double ChikouSpan { get; set; }     // 후행스팬
    }


    public class SMABandConditionSetup
    {
        private readonly int rangeLookback = 12;
        private readonly double rangeThresholdPercent = 2;
        /// <summary>
        ///     false 는 구매 전, true는 판매 후
        /// </summary>
        private bool firstCloudFlag = true;

        public bool Calculate(List<CandleData> candles, SMABandType type, bool flag = false)
        {
            var close = candles.Select(t => t.Close).ToList();

            var high = candles.Select(t => t.High).ToList();

            var low = candles.Select(t => t.Low).ToList();

            var open = candles.Select(t => t.Open).ToList();

            if (flag)
            {
                close.RemoveAt(close.Count - 1);
                high.RemoveAt(high.Count - 1);
                low.RemoveAt(low.Count - 1);
                open.RemoveAt(open.Count - 1);
            }

            int i = close.Count - 1;
            if (close.Count < 100 || high.Count < 100 || low.Count < 100 || open.Count < 100)
                return false;

            // SMA4 관련
            double sma4 = Sma4(close, i);
            double prevSma4 = Sma4(close, i - 1);
            double prev2Sma4 = Sma4(close, i - 2);
            double prev3Sma4 = Sma4(close, i - 3);

            // 밴드 계산
            double sma4High = Highest(close, i, 12);
            double sma4Middle = SMA(close, i, 12);
            double sma4Low = Lowest(close, i, 12);

            double prevSma4High = Highest(close, i - 1, 12);
            double prevSma4Middle = SMA(close, i - 1, 12);
            double prevSma4Low = Lowest(close, i - 1, 12);

            double prev2Sma4High = Highest(close, i - 2, 12);
            double prev2Sma4Low = Lowest(close, i - 2, 12);
            double prev2Sma4Middle = SMA(close, i - 2, 12);

            double prev3Sma4High = Highest(close, i - 3, 12);
            double prev3Sma4Low = Lowest(close, i - 3, 12);
            double prev3Sma4Middle = SMA(close, i - 3, 12);


            var ichmok = GetIchimokuCloud(candles, i - 25);

            var cloudTopNow = Math.Max(ichmok.SenkouSpanA, ichmok.SenkouSpanB);
            var cloudBottomNow = Math.Min(ichmok.SenkouSpanA, ichmok.SenkouSpanB);

            bool isSma4BelowCloud = low[i] < cloudBottomNow;
            bool isSma4AboveCloud = high[i] > cloudTopNow;
            //bool cloudFlag = false; 

            //if (!firstCloudFlag)
            //{
            //    if(isSma4BelowCloud)
            //        cloudFlag = true;
            //}
            //else 
            //{
            //    if (!isSma4BelowCloud)
            //        firstCloudFlag = false;
            //}


            bool greenCandle = open[i] < close[i];
            bool redCandle = open[i] > close[i];

            // 진입/청산 조건
            bool rawNewLong = sma4 > cloudBottomNow && IsSideways(high, low, i, true) && isSma4AboveCloud && (sma4 == sma4High && prevSma4 <= prevSma4High && prev2Sma4 <= prev2Sma4High) && (sma4 >= prevSma4 && prevSma4 >= prev2Sma4 && prev2Sma4 >= prev3Sma4);

            bool rawLongSell = (sma4 <= prevSma4 && prevSma4 <= prev2Sma4 && sma4 < sma4High);

            //cloudFlag &&
            bool rawNewShort = IsSideways(high, low, i, false) && isSma4BelowCloud && (sma4 == sma4Low && prevSma4 >= prevSma4Low && prev2Sma4 >= prev2Sma4Low) && (sma4 <= prevSma4 && prevSma4 <= prev2Sma4 && prev2Sma4 <= prev3Sma4);

            bool rawShortSell = (sma4 >= prevSma4 && prevSma4 >= prev2Sma4 && sma4 > sma4Middle);

            // === 시그널 계산 ===
            if (type == SMABandType.LongBuy)
            {
                return rawNewLong;
            }
            else if (type == SMABandType.ShortBuy)
            {
                return rawNewShort;
            }

            else if (type == SMABandType.LongSell)
            {                
                return rawLongSell;
            }
            else if (type == SMABandType.ShortSell)
            {
                //if (rawShortSell)
                //    firstCloudFlag = true;
                return rawShortSell;

            }
            return false;
        }

        private double Sma4(List<double> list, int index) =>
             Avg(list[index], list[index - 1], list[index - 2], list[index - 3]);

        private double Avg(params double[] values) =>
            values.Average();

        private double SMA(List<double> source, int currentIndex, int period)
        {
            return Enumerable.Range(currentIndex - period + 1, period)
                             .Select(i => Sma4(source, i))
                             .Average();
        }

        private double Highest(List<double> source, int currentIndex, int period)
        {
            return Enumerable.Range(currentIndex - period + 1, period)
                             .Select(i => Sma4(source, i))
                             .Max();
        }

        private double Lowest(List<double> source, int currentIndex, int period)
        {
            return Enumerable.Range(currentIndex - period + 1, period)
                             .Select(i => Sma4(source, i))
                             .Min();
        }

        private bool IsSideways(List<double> high, List<double> low, int index, bool type)
        {
            double highestHigh = high.Skip(index - rangeLookback).Take(rangeLookback + 1).Max();
            double lowestLow = low.Skip(index - rangeLookback).Take(rangeLookback + 1).Min();
            // long
            if (type)
            {   
                double range = high[index] - lowestLow;
                return range > (high[index] * rangeThresholdPercent / 100.0) && highestHigh == high[index];
            }
            //short
            else
            {                
                double range = highestHigh - low[index];
                return range > (low[index] * rangeThresholdPercent / 100.0) && lowestLow == low[index];

            }
        }

        private IchimokuResult GetIchimokuCloud(List<CandleData> candles, int i)
        {
            var highs = candles.Select(t => t.High).ToList();
            var lows = candles.Select(t => t.Low).ToList();
            var closes = candles.Select(t => t.Close).ToList();       
            
            var result = new IchimokuResult();

            double tenkan = 0;
            double kijun = 0;
            double senkouA = 0;
            double senkouB = 0;
            double chikou = 0;

            // Tenkan-sen (9)
            if (i >= 8)
            {
                double max9 = highs.GetRange(i - 8, 9).Max();
                double min9 = lows.GetRange(i - 8, 9).Min();
                tenkan = (max9 + min9) / 2.0;
            }

            // Kijun-sen (26)
            if (i >= 25)
            {
                double max26 = highs.GetRange(i - 25, 26).Max();
                double min26 = lows.GetRange(i - 25, 26).Min();
                kijun = (max26 + min26) / 2.0;
            }

            // Senkou Span A (현재 시점에서 계산만, 시프트는 X)
            if (tenkan != 0 && kijun != 0)
            {
                senkouA = (tenkan + kijun) / 2.0;
            }

            // Senkou Span B (52)
            if (i >= 51)
            {
                double max52 = highs.GetRange(i - 51, 52).Max();
                double min52 = lows.GetRange(i - 51, 52).Min();
                senkouB = (max52 + min52) / 2.0;
            }
            return new IchimokuResult
            {
                TenkanSen = tenkan,
                KijunSen = kijun,
                SenkouSpanA = senkouA,
                SenkouSpanB = senkouB,
                ChikouSpan = chikou
            };
            
        }
    }
}