//------------------------------------------------------------------
#property copyright "www.forex-tsd.com"
#property link      "www.forex-tsd.com"
//------------------------------------------------------------------
#property indicator_separate_window
#property indicator_buffers 8
#property indicator_color1  Blue
#property indicator_color2  Red
#property indicator_color3  Blue
#property indicator_color4  Red
#property indicator_color5  Blue
#property indicator_color6  Red
#property indicator_color7  Blue
#property indicator_color8  Red
#property indicator_minimum 0
#property indicator_maximum 5

//
//
//
//
//

extern string TimeFrame1            = "Current time frame";
extern string TimeFrame2            = "next1";
extern string TimeFrame3            = "next2";
extern string TimeFrame4            = "next3";
extern int    MaMethod              = MODE_SMMA;
extern int    MaPeriod              = 6;
extern int    MaMethod2             = MODE_LWMA;
extern int    MaPeriod2             = 2;
extern bool   UseHAHighLow          = true;
extern string UniqueID              = "4TF HA";
extern int    LinesWidth            =  0;
extern color  LabelsColor           = DarkGray;
extern int    LabelsHorizontalShift = 5;
extern double LabelsVerticalShift   = 1.5;

//
//
//
//
//

double ha1u[];
double ha1d[];
double ha2u[];
double ha2d[];
double ha3u[];
double ha3d[];
double ha4u[];
double ha4d[];

int    timeFrames[4];
bool   returnBars;
bool   calculateValue;
string indicatorFileName;

//------------------------------------------------------------------
//
//------------------------------------------------------------------
//
//
//
//
//

int init()
{
   SetIndexBuffer(0,ha1u);
   SetIndexBuffer(1,ha1d);
   SetIndexBuffer(2,ha2u);
   SetIndexBuffer(3,ha2d);
   SetIndexBuffer(4,ha3u);
   SetIndexBuffer(5,ha3d);
   SetIndexBuffer(6,ha4u);
   SetIndexBuffer(7,ha4d);
      indicatorFileName = WindowExpertName();
      returnBars        = (TimeFrame1=="returnBars");     if (returnBars)     return(0);
      calculateValue    = (TimeFrame1=="calculateValue"); if (calculateValue) return(0);
      
      //
      //
      //
      //
      //
      
      for (int i=0; i<8; i++) 
      {
         SetIndexStyle(i,DRAW_ARROW,EMPTY,LinesWidth); SetIndexArrow(i,110); 
      }
      timeFrames[0] = stringToTimeFrame(TimeFrame1);
      timeFrames[1] = stringToTimeFrame(TimeFrame2);
      timeFrames[2] = stringToTimeFrame(TimeFrame3);
      timeFrames[3] = stringToTimeFrame(TimeFrame4);
      IndicatorShortName(UniqueID);
   return(0);
}
int deinit()
{
   for (int t=0; t<4; t++) ObjectDelete(UniqueID+t);
   return(0); 
}

//------------------------------------------------------------------
//
//------------------------------------------------------------------
//
//
//
//
//

int start()
{
   int count,counted_bars=IndicatorCounted();
      if(counted_bars < 0) return(-1);
      if(counted_bars>0) counted_bars--;
         int limit = MathMin(Bars-counted_bars,Bars-1);
         if (returnBars)     { ha1u[0] = limit+1;  return(0); }
         if (calculateValue) { calculateHA(limit); return(0); }

         if (timeFrames[0] != Period()) limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrames[0],indicatorFileName,"returnBars",0,0)*timeFrames[0]/Period()));
         if (timeFrames[1] != Period()) limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrames[1],indicatorFileName,"returnBars",0,0)*timeFrames[1]/Period()));
         if (timeFrames[2] != Period()) limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrames[2],indicatorFileName,"returnBars",0,0)*timeFrames[2]/Period()));
         if (timeFrames[3] != Period()) limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrames[3],indicatorFileName,"returnBars",0,0)*timeFrames[3]/Period()));

         //
         //
         //
         //
         //
         
         bool initialized = false;
         if (!initialized)
         {
            initialized = true;
            int window = WindowFind(UniqueID);
            for (int t=0; t<4; t++)
            {
               string label = timeFrameToString(timeFrames[t]);
               ObjectCreate(UniqueID+t,OBJ_TEXT,window,0,0);
                  ObjectSet(UniqueID+t,OBJPROP_COLOR,LabelsColor);
                  ObjectSet(UniqueID+t,OBJPROP_PRICE1,t+LabelsVerticalShift);
                  ObjectSetText(UniqueID+t,label,8,"Arial");
            }               
         }
         for (t=0; t<4; t++) ObjectSet(UniqueID+t,OBJPROP_TIME1,Time[0]+Period()*LabelsHorizontalShift*60);

   //
   //
   //
   //
   //
    
   for(int i = limit; i >= 0; i--)
   {
      for (int k=0; k<4; k++)
      {
         int y = iBarShift(NULL,timeFrames[k],Time[i]);
         if (UseHAHighLow)
         {
            double halo = iCustom(NULL,timeFrames[k],indicatorFileName,"calculateValue","","","",MaMethod,MaPeriod,MaMethod2,MaPeriod2,0,y);
            double hahi = iCustom(NULL,timeFrames[k],indicatorFileName,"calculateValue","","","",MaMethod,MaPeriod,MaMethod2,MaPeriod2,1,y);
            bool   isUp = (hahi>halo);
         }            
         else            
         {
            double hacl = iCustom(NULL,timeFrames[k],indicatorFileName,"calculateValue","","","",MaMethod,MaPeriod,MaMethod2,MaPeriod2,2,y);
            double haop = iCustom(NULL,timeFrames[k],indicatorFileName,"calculateValue","","","",MaMethod,MaPeriod,MaMethod2,MaPeriod2,3,y);
                   isUp = (haop>hacl);
         }
         
         //
         //
         //
         //
         //
                     
         switch (k)
         {
            case 0 : if (isUp) { ha1u[i] = k+1; ha1d[i] = EMPTY_VALUE;}  else { ha1d[i] = k+1; ha1u[i] = EMPTY_VALUE; } break;
            case 1 : if (isUp) { ha2u[i] = k+1; ha2d[i] = EMPTY_VALUE;}  else { ha2d[i] = k+1; ha2u[i] = EMPTY_VALUE; } break;
            case 2 : if (isUp) { ha3u[i] = k+1; ha3d[i] = EMPTY_VALUE;}  else { ha3d[i] = k+1; ha3u[i] = EMPTY_VALUE; } break;
            case 3 : if (isUp) { ha4u[i] = k+1; ha4d[i] = EMPTY_VALUE;}  else { ha4d[i] = k+1; ha4u[i] = EMPTY_VALUE; } break;
         }
      }
   }
   return(0);
}

//-------------------------------------------------------------------
//
//-------------------------------------------------------------------
//
//
//
//
//

void calculateHA(int limit)
{
   for (int i=limit; i>=0; i--)
   {
      double maOpen  = iMA(NULL,0,MaPeriod,0,MaMethod,PRICE_OPEN ,i);
      double maClose = iMA(NULL,0,MaPeriod,0,MaMethod,PRICE_CLOSE,i);
      double maLow   = iMA(NULL,0,MaPeriod,0,MaMethod,PRICE_LOW  ,i);
      double maHigh  = iMA(NULL,0,MaPeriod,0,MaMethod,PRICE_HIGH ,i);
      double haOpen  = (ha3u[i+1]+ha3d[i+1])/2.0;
      double haClose = (maOpen+maHigh+maLow+maClose)/4;
      double haHigh  = MathMax(maHigh, MathMax(haOpen, haClose));
      double haLow   = MathMin(maLow,  MathMin(haOpen, haClose));

      if (haOpen<haClose) 
            { ha4u[i]=haLow; ha4d[i]=haHigh; } 
      else  { ha4d[i]=haLow; ha4u[i]=haHigh; } 
              ha3u[i]=haOpen;
              ha3d[i]=haClose;
   }
   for(i=limit; i>=0; i--)
   {
      ha1u[i]=iMAOnArray(ha4u,0,MaPeriod2,0,MaMethod2,i);
      ha1d[i]=iMAOnArray(ha4d,0,MaPeriod2,0,MaMethod2,i);
      ha2u[i]=iMAOnArray(ha3u,0,MaPeriod2,0,MaMethod2,i);
      ha2d[i]=iMAOnArray(ha3d,0,MaPeriod2,0,MaMethod2,i);
   }      
}


//-------------------------------------------------------------------
//
//-------------------------------------------------------------------
//
//
//
//
//

string sTfTable[] = {"M1","M5","M15","M30","H1","H4","D1","W1","MN"};
int    iTfTable[] = {1,5,15,30,60,240,1440,10080,43200};

//
//
//
//
//

int toInt(double value) { return(value); }
int stringToTimeFrame(string tfs)
{
   tfs = stringUpperCase(tfs);
   int max = ArraySize(iTfTable)-1, add=0;
   int nxt = (StringFind(tfs,"NEXT1")>-1); if (nxt>0) { tfs = ""+Period(); add=1; }
       nxt = (StringFind(tfs,"NEXT2")>-1); if (nxt>0) { tfs = ""+Period(); add=2; }
       nxt = (StringFind(tfs,"NEXT3")>-1); if (nxt>0) { tfs = ""+Period(); add=3; }

      //
      //
      //
      //
      //
         
      for (int i=max; i>=0; i--)
         if (tfs==sTfTable[i] || tfs==""+iTfTable[i]) return(MathMax(iTfTable[toInt(MathMin(max,i+add))],Period()));
                                                      return(Period());
}
string timeFrameToString(int tf)
{
   for (int i=ArraySize(iTfTable)-1; i>=0; i--) 
         if (tf==iTfTable[i]) return(sTfTable[i]);
                              return("");
}

//
//
//
//
//

string stringUpperCase(string str)
{
   string   s = str;

   for (int length=StringLen(str)-1; length>=0; length--)
   {
      int char = StringGetChar(s, length);
         if((char > 96 && char < 123) || (char > 223 && char < 256))
                     s = StringSetChar(s, length, char - 32);
         else if(char > -33 && char < 0)
                     s = StringSetChar(s, length, char + 224);
   }
   return(s);
}