Avalonia/PortfolioManager/Models/MovingAverageModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Eremex.AvaloniaUI.Charts;
using MarketData.MarketDataModel;
using MarketData.MarketDataModel.GainLoss;
using PortfolioManager.DataSeriesViewModels;

namespace PortfolioManager.Models
{
  public class MovingAverageModel
  {
    private MovingAverageModel()
    {
    }

    public static CompositeDataSource Empty()
    {
        CompositeDataSource compositeDataSource = new CompositeDataSource()
        {
            DataAdapter = new SortedDateTimeDataAdapter()
        };
        return compositeDataSource;
    }    

    /// <summary>
    /// Creates the moving average composite data source
    /// </summary>
    /// <param name="gainLossList"></param>
    /// <param name="useGainLoss"></param>
    /// <returns></returns>
    public static CompositeDataSource CreateCompositeDataSource(DMAValues dmaValues)
    {
      if (null == dmaValues) return Empty();
      List<DMAValue> sortedValues = new List<DMAValue>(dmaValues.OrderBy(x => x.Date));

      SortedDateTimeDataAdapter sortedDateTimeDataAdapter = new SortedDateTimeDataAdapter();
      foreach (DMAValue dmaValue in sortedValues)
      {
        sortedDateTimeDataAdapter.Add(dmaValue.Date,dmaValue.MAValue);
      }
      CompositeDataSource compositeDataSource = new CompositeDataSource()
      {
        DataAdapter = sortedDateTimeDataAdapter
      };
      return compositeDataSource;
    }        
  }
}