DARVAS ASIA

using cAlgo.API;
using System;

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class DarvasBox : Indicator
    {
        private double boxTop;
        private double boxBottom;
        private bool isBoxActive;
        private int boxStart;
        private int boxCount;

        [Parameter("Tick Percentage", DefaultValue = 0.5, MinValue = 0, MaxValue = 100)]
        public double TickPercentage { get; set; }

        protected override void Initialize()
        {
            isBoxActive = false;
            boxCount = 0;
        }

        public override void Calculate(int index)
        {
            if (index <= 0)
                return;

            // Check if the current index is within the Asian session
            if (!IsAsianSession(index))
                return;

            if (isBoxActive)
            {
                // Close the box if price goes below 50% of the box or above 50% of the box
                if (MarketSeries.Low[index] < boxBottom * (1 - TickPercentage / 100) || MarketSeries.High[index] > boxTop * (1 + TickPercentage / 100))
                {
                    DrawDarvasBox(boxStart, index);
                    isBoxActive = false;
                }
            }
            else
            {
                // Open a new box if the high breaks the previous high
                if (MarketSeries.High[index] > MarketSeries.High[index - 1])
                {
                    boxTop = MarketSeries.High[index];
                    boxBottom = MarketSeries.Low[index];
                    boxStart = index;
                    isBoxActive = true;
                }
            }
        }

        private void DrawDarvasBox(int startIndex, int endIndex)
        {
            // Draw Darvas Box lines
            double boxHeight = Symbol.PipSize * 10; // You can adjust the height as needed

            ChartObjects.DrawLine("DarvasBoxTop" + boxCount, startIndex, boxTop, endIndex, boxTop, Colors.Blue, 3, LineStyle.Solid);
            ChartObjects.DrawLine("DarvasBoxBottom" + boxCount, startIndex, boxBottom, endIndex, boxBottom, Colors.Blue, 3, LineStyle.Solid);

            boxCount++;
        }

        private bool IsAsianSession(int index)
        {
            DateTime currentTime = MarketSeries.OpenTime[index];
            DateTime asianOpen = new DateTime(currentTime.Year, currentTime.Month, currentTime.Day, 0, 0, 0);
            DateTime asianClose = new DateTime(currentTime.Year, currentTime.Month, currentTime.Day, 8, 0, 0);

            return currentTime >= asianOpen && currentTime <= asianClose;
        }
    }
}