using MarketData.Generator.Interface;
using MarketData.MarketDataModel;
using MarketData.Utils;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TradeBlotter.Interface;
using TradeBlotter.ViewModels;

namespace TradeBlotter.Extensions
{
  public static class PortfolioTradesExtensions
  {

    public static PortfolioTrades FromSaveParams(SaveParameters saveParameters)
    {
      PortfolioTrades portfolioTrades=new PortfolioTrades();
      int stopHistoryCount=int.Parse((from KeyValuePair<String,String> item in saveParameters where item.Key.Equals("PortfolioTradesCount") select item).FirstOrDefault().Value);
      for(int index=0;index<stopHistoryCount;index++)
      {
        String strItemKey=String.Format("PortfolioTrade_{0}",index);
        String strPortfolioTradeItem=(from KeyValuePair<String,String> item in saveParameters where item.Key.Equals(strItemKey) select item).FirstOrDefault().Value;
        NVPCollection nvpCollection=new NVPCollection(strPortfolioTradeItem);
        PortfolioTrade portfolioTrade=PortfolioTrade.FromNVPCollection(nvpCollection);
        portfolioTrades.Add(portfolioTrade);
      }
      portfolioTrades=new PortfolioTrades(portfolioTrades.OrderBy(x => x.TradeDate).ToList());
      return portfolioTrades;
    }

    public static SaveParameters FromPosition(IPositionModel position)
    {
      PortfolioTrades portfolioTrades = new PortfolioTrades();
      SaveParameters saveParameters = new SaveParameters();

      if(null == position) 
      {
        return saveParameters;
      }

      PortfolioTrade portfolioTrade = new PortfolioTrade()
      {
        Symbol = position.Symbol,
        TradeDate = position.PurchaseDate,
        Shares = position.Shares,
        Price = position.PurchasePrice,
        SellPrice = Utility.IsEpoch(position.SellDate)?double.NaN:position.CurrentPrice,
        SellDate = position.SellDate                     ,
        BuySell= Utility.IsEpoch(position.SellDate)?"B":"S",
        Status= Utility.IsEpoch(position.SellDate)?"OPEN":"CLOSED",
      };
      portfolioTrades.Add(portfolioTrade);
      return FromPortfolioTrades(portfolioTrades);
    }

    public static SaveParameters FromPortfolioTrades(PortfolioTrades portfolioTrades)
    {
      SaveParameters saveParameters = new SaveParameters();

      if(null == portfolioTrades || 0==portfolioTrades.Count) 
      {
        return saveParameters;
      }
      StringBuilder sb = new StringBuilder();
      NVPCollections nvpCollections = portfolioTrades.ToNVPCollections();
      sb.Append("PortfolioTradesCount").Append(",").Append(String.Format("{0}", nvpCollections.Count)).Append(",");
      for (int index = 0; index < nvpCollections.Count; index++)
      {
        sb.Append(String.Format("PortfolioTrade_{0}", index)).Append(",").Append(nvpCollections[index].ToString());
        if (index < nvpCollections.Count - 1) sb.Append(",");
      }
      return SaveParameters.Parse(sb.ToString());
    }
  }
}