Convert MT4 Indicator to MT5

Convert the ADR indicator (ADR V2.mq4) from this page:
https://forex-station.com/app.php/attach/file/3363278

from MT4 to MT5

It is a very simple indicator which is only 64 lines including all of the comments & declarations at the top.

The code is actually the following:
//+------------------------------------------------------------------+
//|                                           Daily Range PeterE.mq4 |
//+------------------------------------------------------------------+

#property indicator_chart_window

extern int      NumOfDays             = 25;
extern string   FontName              = "Tahoma";
extern int      FontSize              = 14;
extern color    FontColor             = White;
extern int      Window                = 0;
extern int      Corner                = 0;
extern int      HorizPos              = 85;
extern int      VertPos               = 0;

double pnt;
int    dig;
string objname = "*DRPE";

//+------------------------------------------------------------------+
int init()  {
//+------------------------------------------------------------------+
  pnt = MarketInfo(Symbol(),MODE_POINT);
  dig = MarketInfo(Symbol(),MODE_DIGITS);
  if (dig == 3 || dig == 5) {
    pnt *= 10;
  }  
  ObjectCreate(objname,OBJ_LABEL,Window,0,0);
  return(0);
}

//+------------------------------------------------------------------+
int deinit()  {
//+------------------------------------------------------------------+
  ObjectDelete(objname);
  return(0);
}

//+------------------------------------------------------------------+
int start()  {
//+------------------------------------------------------------------+
  int c=0;
  double sum=0;
  for (int i=1; i<Bars-1; i++)  {
    double hi = iHigh(NULL,PERIOD_D1,i);
    double lo = iLow(NULL,PERIOD_D1,i);
    datetime dt = iTime(NULL,PERIOD_D1,i);
    if (TimeDayOfWeek(dt) > 0 && TimeDayOfWeek(dt) < 6)  {
      sum += hi - lo;
      c++;
      if (c>=NumOfDays) break;
  } }
  hi = iHigh(NULL,PERIOD_D1,0);
  lo = iLow(NULL,PERIOD_D1,0);
  if (i>0 && pnt>0)  {
    string objtext = DoubleToStr(sum/c/pnt,1) + " | " + DoubleToStr((hi-lo)/pnt,1) + " | " +DoubleToStr((((hi-lo)/pnt)/(sum/c/pnt))*100,0)+" %";   
//     add: + c + :here ^ to display user select adr number of days           
    ObjectSet(objname,OBJPROP_CORNER,Corner);
    ObjectSet(objname,OBJPROP_XDISTANCE,HorizPos);
    ObjectSet(objname,OBJPROP_YDISTANCE,VertPos);
    ObjectSetText(objname,objtext,FontSize,FontName,FontColor);
  }  
  return(0);
}