TF SSL Channel

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

namespace cAlgo
{
    [Cloud("SSLDown", "SSLUp")]
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class TimeFrameSSLChannel : Indicator
    {
        //////////////////////////////////////////////////////////////////////// PARAMETERS
        [Parameter("Time Frame", DefaultValue = "Daily")]
        public TimeFrame SelectedTimeFrame { get; set; }
        [Parameter("Length", DefaultValue = 10)]
        public int _length { get; set; }
        [Parameter("MA Type", DefaultValue = MovingAverageType.Simple)]
        public MovingAverageType _MAType { get; set; }

        //////////////////////////////////////////////////////////////////////// OUTPUTS
        [Output("SSLDown", LineColor = "Red")]
        public IndicatorDataSeries _sslDown { get; set; }
        [Output("SSLUp", LineColor = "Green")]
        public IndicatorDataSeries _sslUp { get; set; }

        private MovingAverage _maHigh, _maLow;
        private IndicatorDataSeries _hlv;
        private bool isCurrentTimeFrame;
        private Bars bars;
        //////////////////////////////////////////////////////////////////////// INITIALIZE
        protected override void Initialize()
        {
            isCurrentTimeFrame = SelectedTimeFrame == TimeFrame;
            bars = MarketData.GetBars(SelectedTimeFrame);

            while (bars.OpenTimes[0] > Bars.OpenTimes[0])
                bars.LoadMoreHistory();

            _maHigh = Indicators.MovingAverage(bars.HighPrices, _length, _MAType);
            _maLow = Indicators.MovingAverage(bars.LowPrices, _length, _MAType);

            _hlv = CreateDataSeries();
        }
        //////////////////////////////////////////////////////////////////////// CALCULATE
        public override void Calculate(int index)
        {
            int dataIndex = isCurrentTimeFrame ? index : bars.OpenTimes.GetIndexByTime(Bars.OpenTimes[index]);
            int dataIndex2 = isCurrentTimeFrame ? index - 1 : bars.OpenTimes.GetIndexByTime(Bars.OpenTimes[index - 1]);
            if (dataIndex < 0)
            {
                return;
            }

            _hlv[index] = bars.ClosePrices[dataIndex] > _maHigh.Result[dataIndex] ? 1 : bars.ClosePrices[dataIndex] < _maLow.Result[dataIndex] ? -1 : _hlv[Bars.OpenTimes.GetIndexByTime(bars.OpenTimes[dataIndex]) - 1];
            _sslDown[index] = _hlv[index] < 0 ? _maHigh.Result[dataIndex] : _maLow.Result[dataIndex];
            _sslUp[index] = _hlv[index] < 0 ? _maLow.Result[dataIndex] : _maHigh.Result[dataIndex];

            // Check if a new bar started (open time of tf bar != open time of last TF bar) on the selected TF, if so keep the values of the last index (index - 1)
            // since this was the actual close of the TF bar otherwise "delete" the values of the last index

            // index when the TF bar opened
            int lastDataIndex = Bars.OpenTimes.GetIndexByTime(bars.OpenTimes[dataIndex]);
            int lastDataIndex2 = Bars.OpenTimes.GetIndexByTime(bars.OpenTimes[dataIndex2]);
            if (lastDataIndex == lastDataIndex2 && !isCurrentTimeFrame)
            {
                _sslDown[index - 1] = double.NaN;
                _sslUp[index - 1] = double.NaN;
            }
        }
    }
}