using System;
using System.Collections.Generic;
using System.Text.Json;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;
// ******************************************
// *** ASSUMING SERVER TIME IS ALWAYS GMT ***
// ******************************************
namespace cAlgo
{
    [Indicator(AccessRights = AccessRights.None, IsOverlay = true)]
    public class HoLo_Indi : Indicator
    {
        Bars H1Bars, D1Bars;
        DateTime CurrentTradingSessionDateTime = DateTime.MinValue;
        double YesterdayHigh, YesterdayLow, TodayHigh, TodayLow, TodayHighestHTFOpen, TodayLowestHTFOpen;
        bool FirtsRun = true;
        int CurrentD1BarIndex = 0, CurrentH1BarIndex = 0;
        AreaOfInterest UpperAreaOfInterest = new AreaOfInterest(), LowerAreaOfInterest = new AreaOfInterest();
        protected override void Initialize()
        {
            //System.Diagnostics.Debugger.Launch();
            Chart.RemoveAllObjects();
            if (Chart.TimeFrame != TimeFrame.Minute5) { Chart.TryChangeTimeFrame(TimeFrame.Minute5); }
            Chart.ColorSettings.BullFillColor = Color.Lime;
            Chart.ColorSettings.BullOutlineColor = Color.Lime;
            Chart.ColorSettings.BearFillColor = Color.DarkOrchid;
            Chart.ColorSettings.BearOutlineColor = Color.DarkOrchid;
            Chart.DisplaySettings.Grid = false;
            Chart.DisplaySettings.PeriodSeparators = false;
            Chart.DisplaySettings.QuickTradeButtons = false;
            Chart.DisplaySettings.Targets = false;
            Chart.DisplaySettings.TickVolume = false;
            Chart.DisplaySettings.AskPriceLine = false;
            H1Bars = MarketData.GetBars(TimeFrame.Hour, SymbolName);
            D1Bars = MarketData.GetBars(TimeFrame.Daily, SymbolName);
            CurrentTradingSessionDateTime = D1Bars.OpenTimes[1];
            Chart.ZoomLevel = 20;
            Chart.ScrollXTo(Bars.LastBar.OpenTime);
            Chart.SetYRange(D1Bars.Last(1).Low < D1Bars.Last(0).Low ? D1Bars.Last(1).Low - 5 * Symbol.PipSize : D1Bars.Last(0).Low - 5 * Symbol.PipSize, D1Bars.Last(1).High > D1Bars.Last(0).High ? D1Bars.Last(1).High + 5 * Symbol.PipSize : D1Bars.Last(0).High + 5 * Symbol.PipSize);
        }
        public override void Calculate(int index)
        {
            if (FirtsRun)
            {
                while (D1Bars.OpenTimes.GetIndexByTime(Bars[0].OpenTime) == -1) D1Bars.LoadMoreHistory();
                while (H1Bars.OpenTimes.GetIndexByTime(Bars[0].OpenTime) == -1) H1Bars.LoadMoreHistory();
                while (D1Bars[D1Bars.OpenTimes.GetIndexByTime(Bars[0].OpenTime)].OpenTime == D1Bars[D1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime)].OpenTime) return;
                while (H1Bars[H1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime)].OpenTime.Hour != D1Bars[D1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime)].OpenTime.Hour + 1) return;
                SetupNewSession(index);
                FirtsRun = false;
            }
            CurrentD1BarIndex = D1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime);
            CurrentH1BarIndex = H1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime);

            if (CurrentTradingSessionDateTime != D1Bars[CurrentD1BarIndex].OpenTime)
            {
                while (H1Bars[CurrentH1BarIndex].OpenTime.Hour != D1Bars[CurrentD1BarIndex].OpenTime.Hour + 1) return;
                SetupNewSession(index);
            }

            if (Bars[index].OpenTime.Minute == 0)
            { //New H1
                if (H1Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Max(p => p.Open) > TodayHighestHTFOpen)
                {
                    TodayHighestHTFOpen = H1Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Max(p => p.Open);
                    Chart.DrawIcon("TodayHighestHTFOpen" + Guid.NewGuid().ToString(), ChartIconType.DownArrow, Bars[index].OpenTime, TodayHighestHTFOpen, Color.Yellow);
                    UpperAreaOfInterest.Name = Guid.NewGuid().ToString();
                    UpperAreaOfInterest.StartingFrom = H1Bars[CurrentH1BarIndex].OpenTime;
                    UpperAreaOfInterest.LowerLevel = TodayHighestHTFOpen;
                    UpperAreaOfInterest.UpperLevel = TodayHigh;
                    UpperAreaOfInterest.Enabled = true;
                }
                if (H1Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Min(p => p.Open) < TodayLowestHTFOpen)
                {
                    TodayLowestHTFOpen = H1Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Min(p => p.Open);
                    Chart.DrawIcon("TodayHighestHTFOpen" + Guid.NewGuid().ToString(), ChartIconType.UpArrow, Bars[index].OpenTime, TodayLowestHTFOpen, Color.Yellow);
                    LowerAreaOfInterest.Name = Guid.NewGuid().ToString();
                    LowerAreaOfInterest.StartingFrom = H1Bars[CurrentH1BarIndex].OpenTime;
                    LowerAreaOfInterest.LowerLevel = TodayLow;
                    LowerAreaOfInterest.UpperLevel = TodayLowestHTFOpen;
                    LowerAreaOfInterest.Enabled = true;
                }
            }
            if (Bars[index].High > TodayHigh || Bars[index].Close > YesterdayHigh) UpperAreaOfInterest.Enabled = false;
            if (Bars[index].Low < TodayLow || Bars[index].Close < YesterdayLow) LowerAreaOfInterest.Enabled = false;

            TodayHigh = Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Max(p => p.High);
            TodayLow = Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Min(p => p.Low);

            Chart.DrawRectangle("H1Bar" + H1Bars[CurrentH1BarIndex].Open.ToString(), H1Bars[CurrentH1BarIndex].OpenTime, H1Bars[CurrentH1BarIndex].Open, Bars[index].OpenTime, H1Bars[CurrentH1BarIndex].Close, H1Bars[CurrentH1BarIndex].Open < H1Bars[CurrentH1BarIndex].Close ? Color.Lime : Color.Red, 2, LineStyle.Dots);
            Chart.DrawRectangle("H1Bar" + H1Bars[CurrentH1BarIndex].Open.ToString(), H1Bars[CurrentH1BarIndex].OpenTime, H1Bars[CurrentH1BarIndex].Open, Bars[index].OpenTime, H1Bars[CurrentH1BarIndex].Close, H1Bars[CurrentH1BarIndex].Open < H1Bars[CurrentH1BarIndex].Close ? Color.Lime : Color.Red, 2, LineStyle.Dots);

            Chart.DrawTrendLine("YesterdayHigh", D1Bars.LastBar.OpenTime, YesterdayHigh, Server.Time, YesterdayHigh, Color.Gray, 1, LineStyle.LinesDots);
            Chart.DrawText("YesterdayHighTXT", "YesterdayHigh", new DateTime((Bars[index].OpenTime.Ticks + D1Bars.LastBar.OpenTime.Ticks) / 2), YesterdayHigh, Color.Gray).VerticalAlignment = VerticalAlignment.Bottom;
            
            Chart.DrawTrendLine("YesterdayLow", D1Bars.LastBar.OpenTime, YesterdayLow, Server.Time, YesterdayLow, Color.Gray, 1, LineStyle.LinesDots);
            Chart.DrawText("YesterdayLowTXT", "YesterdayLow", new DateTime((Bars[index].OpenTime.Ticks + D1Bars.LastBar.OpenTime.Ticks) / 2), YesterdayLow, Color.Gray).VerticalAlignment = VerticalAlignment.Top;
            
            Chart.DrawTrendLine("TodayHigh", D1Bars.LastBar.OpenTime, D1Bars.LastBar.High, Server.Time, D1Bars.LastBar.High, Color.Lime, 1, LineStyle.LinesDots);
            Chart.DrawText("TodayHighTXT", "TodayHigh", new DateTime((Bars[index].OpenTime.Ticks + D1Bars.LastBar.OpenTime.Ticks) / 2), D1Bars.LastBar.High, Color.Lime).VerticalAlignment = VerticalAlignment.Bottom;
            
            Chart.DrawTrendLine("TodayLow", D1Bars.LastBar.OpenTime, D1Bars.LastBar.Low, Server.Time, D1Bars.LastBar.Low, Color.DarkOrchid, 1, LineStyle.LinesDots);
            Chart.DrawText("TodayLowTXT", "TodayLow", new DateTime((Bars[index].OpenTime.Ticks + D1Bars.LastBar.OpenTime.Ticks) / 2), D1Bars.LastBar.Low, Color.DarkOrchid).VerticalAlignment = VerticalAlignment.Top;

            if (UpperAreaOfInterest.Enabled == true) Chart.DrawRectangle("UpperAreaOfInterest" + UpperAreaOfInterest.Name, UpperAreaOfInterest.StartingFrom, UpperAreaOfInterest.UpperLevel, Bars[index].OpenTime, UpperAreaOfInterest.LowerLevel, Color.FromArgb(50, Color.Yellow)).IsFilled = true;
            if (LowerAreaOfInterest.Enabled == true) Chart.DrawRectangle("LowerAreaOfInterest" + LowerAreaOfInterest.Name, LowerAreaOfInterest.StartingFrom, LowerAreaOfInterest.UpperLevel, Bars[index].OpenTime, LowerAreaOfInterest.LowerLevel, Color.FromArgb(50, Color.Yellow)).IsFilled = true;

            if (Bars[index].OpenTime.Hour == 7 && Bars[index].OpenTime.Minute == 0)
            {
                Chart.DrawVerticalLine("LON" + CurrentTradingSessionDateTime.ToString(), Bars[index].OpenTime, Color.Aqua, 1, LineStyle.DotsRare);
            }
            if (Bars[index].OpenTime.Hour == 13 && Bars[index].OpenTime.Minute == 0)
            {
                Chart.DrawVerticalLine("NYC" + CurrentTradingSessionDateTime.ToString(), Bars[index].OpenTime, Color.Aqua, 1, LineStyle.DotsRare);
            }
        }
        private void SetupNewSession(int index)
        {
            CurrentD1BarIndex = D1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime);
            CurrentH1BarIndex = H1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime);
            CurrentTradingSessionDateTime = D1Bars[D1Bars.OpenTimes.GetIndexByTime(Bars[index].OpenTime)].OpenTime;
            UpperAreaOfInterest.Enabled = false;
            LowerAreaOfInterest.Enabled = false;

            Chart.DrawRectangle("H1Bar" + H1Bars[CurrentH1BarIndex - 1].Open.ToString(), H1Bars[CurrentH1BarIndex - 1].OpenTime, H1Bars[CurrentH1BarIndex].Open, Bars[index - 1].OpenTime, H1Bars[CurrentH1BarIndex - 1].Close, H1Bars[CurrentH1BarIndex - 1].Open < H1Bars[CurrentH1BarIndex - 1].Close ? Color.Lime : Color.Red, 2, LineStyle.Dots);
            Chart.DrawRectangle("H1Bar" + H1Bars[CurrentH1BarIndex - 1].Open.ToString(), H1Bars[CurrentH1BarIndex - 1].OpenTime, H1Bars[CurrentH1BarIndex].Open, Bars[index - 1].OpenTime, H1Bars[CurrentH1BarIndex - 1].Close, H1Bars[CurrentH1BarIndex - 1].Open < H1Bars[CurrentH1BarIndex - 1].Close ? Color.Lime : Color.Red, 2, LineStyle.Dots);

            Chart.DrawVerticalLine(CurrentTradingSessionDateTime.ToString(), CurrentTradingSessionDateTime, Color.Gray, 2, LineStyle.Solid);
            YesterdayHigh = D1Bars[CurrentD1BarIndex - 1].High;
            YesterdayLow = D1Bars[CurrentD1BarIndex - 1].Low;
            TodayHigh = Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Max(p => p.High);
            TodayLow = Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Min(p => p.Low);
            TodayHighestHTFOpen = H1Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Max(p => p.Open);
            TodayLowestHTFOpen = H1Bars.Where(b => b.OpenTime >= CurrentTradingSessionDateTime && b.OpenTime <= Bars[index].OpenTime).Min(p => p.Open);
        }
        protected override void OnDestroy()
        {
            Chart.RemoveAllObjects();
            base.OnDestroy();
        }
    }
    public class AreaOfInterest
    {
        public AreaOfInterest()
        {
            Enabled = false;
            StartingFrom = DateTime.MinValue;
            EndingTo = DateTime.MinValue;
            Name = "UNK";
            UpperLevel = 0;
            LowerLevel = 0;
        }
        public bool Enabled { get; set; }
        public DateTime StartingFrom { get; set; }
        public DateTime EndingTo { get; set; }
        public string Name { get; set; }
        public double UpperLevel { get; set; }
        public double LowerLevel { get; set; }
    }
}