using System.Drawing;
using TradingPlatform.BusinessLayer;
namespace QuanTAlib;

public class ATR_chart : Indicator
{
    #region Parameters

    [InputParameter("Smoothing period", 0, 1, 999, 1, 1)]
    private readonly int Period = 10;

    #endregion Parameters

    private TBars bars;

    ///////
    private ATR_Series indicator;
    ///////

    public ATR_chart()
    {
        this.SeparateWindow = true;
        this.Name = "ATR - Average True Range";
        this.Description = "Average True Range description";
        this.AddLineSeries("ATR", Color.RoyalBlue, 3, LineStyle.Solid);
    }

    protected override void OnInit()
    {
        this.ShortName = "ATR (" + this.Period + ")";
        this.bars = new();
this.indicator = new(source: bars, period: this.Period, useNaN: false);
    }



	protected override void OnUpdate(UpdateArgs args)
    {
        bool update = !(args.Reason == UpdateReason.NewBar ||
                        args.Reason == UpdateReason.HistoricalBar);
        this.bars.Add(this.Time(), this.GetPrice(PriceType.Open),
                      this.GetPrice(PriceType.High), this.GetPrice(PriceType.Low),
                      this.GetPrice(PriceType.Close),
                      this.GetPrice(PriceType.Volume), update);
        double result = this.indicator[this.indicator.Count - 1].v;
        this.SetValue(result);
    }
}