IR Close MTF

using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = true, AccessRights = AccessRights.None)]
    public class IRCloseMTF : Indicator
    {
        [Parameter("Base Timeframe", DefaultValue = "Daily")]
        public TimeFrame BaseTimeFrame { get; set; }

        [Output("MA", LineColor = "Red", LineStyle = LineStyle.Solid, Thickness = 2)]
        public IndicatorDataSeries close_Line { get; set; }

        private MovingAverage _ma;
        private Bars _baseTimeFrameBars;
        double slope;
        int n, nBars, lastBar = 0, One = 0, modeTimeframe = 0;

        protected override void Initialize()
        {
            _baseTimeFrameBars = MarketData.GetBars(BaseTimeFrame);
            _ma = Indicators.MovingAverage(_baseTimeFrameBars.ClosePrices, 1, MovingAverageType.Simple);

            nBars = Bars.Count;
            if (Chart.TimeFrame < BaseTimeFrame)
                modeTimeframe = 1;
            else if (Chart.TimeFrame == BaseTimeFrame)
                modeTimeframe = 2;
        }

        private void Draw()
        {
            for (int j = 1; j <= nBars; j++)
            {
                var baseSeriesIndex = _baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[j]);
                double ma1 = _ma.Result[baseSeriesIndex];
                var baseSeriesIndexB = _baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[j - 1]);
                double ma2 = _ma.Result[baseSeriesIndexB];
                if (ma1 != ma2)
                {
                    for (int i = j; i <= nBars; i++)
                    {
                        ma2 = _ma.Result[_baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[i])];
                        if (ma1 != ma2)
                        {
                            slope = (ma2 - ma1) / (i - j);
                            n = 0;
                            lastBar = j;
                            break;
                        }
                    }
                }
                close_Line[j] = ma1 + (slope * n);
                n++;
            }
        }

        public override void Calculate(int index)
        {
            if (modeTimeframe == 1)
            {
                if (nBars < Bars.Count)
                    nBars = Bars.Count;

                if (One != nBars)
                {
                    Draw();
                    One = nBars;
                }

                if (IsLastBar)
                {
                    var baseSeriesIndex = _baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[index]);
                    double ma3 = _ma.Result[_baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[lastBar - 1])];
                    double ma4;
                    for (int i = lastBar - 1; i > 0; i--)
                    {
                        ma4 = _ma.Result[_baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[i])];
                        if (ma3 != ma4)
                        {
                            ma4 = _ma.Result[_baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[i + 1])];
                            ma3 = _ma.Result[_baseTimeFrameBars.OpenTimes.GetIndexByTime(Bars.OpenTimes[lastBar])];
                            slope = (ma3 - ma4) / (lastBar - i);
                            n = 0;
                            for (int j = i + 1; j <= lastBar; j++)
                            {
                                close_Line[j] = ma4 + (slope * n);
                                n++;
                            }
                            break;
                        }
                    }
                }
            }
            else if (modeTimeframe == 2)
            {
                close_Line[index] = _ma.Result[index];
            }
        }
    }
}