//
// 4X Lab.NET © Copyright 2005-2006 ASCSE LLC
// http://www.4xlab.net
// email: 4xlab@4xlab.net
//

using System;

namespace FourPercentShell
{
    // UNMODIFIED CLASS, SAME AS IN 4XLAB.NET
    
    public class fPercentageChange : ForexObject
    {
    double iPercentage;
    double iMin;
    double iMax;

    bool   FirstTick;
    sTick  Tick;
    double Spread;

    public fPercentageChange()
    {
    }

    public override void Init(string pParameters)
    {
        this.InitializeParameters(pParameters,"PERCENT:0.001;");

        iPercentage = PParser.GetDouble("PERCENT",0);

        Framework.TickServer.RegisterTickListener("System","*",this);

        Framework.WriteGraphLine("InTrade,Margin,Tick,Min,MinTh,Max,MaxTh");

        FirstTick = true;
    }

    public override void ReceiveTick(sTick pTick)
    {
        Spread    = pTick.Ask - pTick.Bid;
        Tick    = pTick;

        DecisionFunction();
    }

    public override void ReceiveCandle(sCandle pCandle, int pPeriod, string pCBTitle)
    {
    }

    
    private void DecisionFunction()
    {

        if (FirstTick)
        {
        FirstTick = false;
        iMin = Tick.Bid;
        iMax = Tick.Bid;
        }
        else
        {
        if (Framework.Account.InTrade()==1)
        {
            if (Tick.Bid > iMax)
            {
            iMax = Tick.Bid;
            }
            
            if ((iMax-Tick.Bid) > iPercentage*iMax)
            {
            Framework.Account.ExitTrade();
            Framework.Account.EnterTrade(-1);
            iMin = Tick.Bid;
            iMax = 0;
            }
        }

        if (Framework.Account.InTrade()==-1)
        {
            if (Tick.Bid < iMin)
            {
            iMin = Tick.Bid;
            }
            
            if ((Tick.Bid-iMin) > iPercentage*iMin)
            {
            Framework.Account.ExitTrade();
            Framework.Account.EnterTrade(1);
            iMax = Tick.Bid;
            iMin = 0;
            }
        }

        if (Framework.Account.InTrade()==0)
        {

            if ((Tick.Bid-iMin) > iPercentage*iMin)
            {
            Framework.Account.EnterTrade(1);
            iMax = Tick.Bid;
            iMin = 0;
            }

            if ((iMax-Tick.Bid) > iPercentage*iMax)
            {
            Framework.Account.EnterTrade(-1);
            iMin = Tick.Bid;
            iMax = 0;
            }

        }

        }

        double logInTrade = Framework.Account.InTrade();
        double logMargin  = Framework.Account.GetAccount().C;

        double MinTh = iMin + iMin*iPercentage;
        double MaxTh = iMax - iMax*iPercentage;

        Framework.WriteGraphLine(logInTrade+","+logMargin+","+Tick.Bid+","+
                     iMin+","+MinTh+","+iMax+","+MaxTh);
    }

    public override bool Finished()
    {
        bool returnv = true;

        return returnv;
    }

    public override string Title()
    {
        return "% Trend Change";
    }
    }

}