Arrow Signals

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Aqua

extern int dist=24;
extern double arrowPosition = 0.25;
input int    TriggerCandle 	= 1;
input bool   EnableNativeAlerts = true;
input bool   EnableSoundAlerts  = true;
input bool   EnableEmailAlerts  = true;
input bool   EnablePushAlerts  = true;
input string AlertEmailSubject  = "";
input string AlertText  	= "";
input string SoundFileName	= "alert.wav";

datetime LastAlertTime = D'01.01.1970';
int LastAlertDirection = 0;
double b1[];
double b2[];

int init()  {
   SetIndexStyle(0,DRAW_ARROW,STYLE_SOLID,1);
   SetIndexStyle(1,DRAW_ARROW,STYLE_SOLID,1);
   SetIndexArrow(1,233);
   SetIndexArrow(0,234);
   SetIndexBuffer(0,b1);
   SetIndexBuffer(1,b2);

   return(0);
}
int start() {
   int counted_bars=IndicatorCounted();
   int k,i,j,limit,hhb,llb;

   if (counted_bars<0) return(-1);
   if (counted_bars>0) counted_bars--;
            limit=Bars-counted_bars-1;
            limit=MathMax(limit,dist);
   if (limit<0) limit=0;





   for (i=limit;i>=0;i--)   {
      hhb = Highest(NULL,0,MODE_HIGH,dist,i-dist/2);
      llb = Lowest(NULL,0,MODE_LOW,dist,i-dist/2);

      if (i==hhb) b1[i]=High[hhb]+iATR(NULL,0,10,i)*arrowPosition; else b1[i]=EMPTY_VALUE;
      if (i==llb) b2[i]=Low[llb] -iATR(NULL,0,10,i)*arrowPosition; else b2[i]=EMPTY_VALUE;
   }
   if (((TriggerCandle > 0) && (Time[0] > LastAlertTime)) || (TriggerCandle == 0))
{
	string Text;
	// Up Arrow Alert
	if ((b1[TriggerCandle] > 0) && ((TriggerCandle > 0) || ((TriggerCandle == 0) && (LastAlertDirection != 1))))
	{
		Text = AlertText + "Up Arrow Buy Now: " + Symbol() + " - " + EnumToString((ENUM_TIMEFRAMES)Period()) + " - Up.";
		if (EnableNativeAlerts) Alert(Text);
		if (EnableEmailAlerts) SendMail(AlertEmailSubject + "Up Arrow Buy Now", Text);
		if (EnableSoundAlerts) PlaySound(SoundFileName);
		if (EnablePushAlerts) SendNotification(Text);
		LastAlertTime = Time[0];
		LastAlertDirection = 1;

	}
	// Down Arrow Alert
	if ((b2[TriggerCandle] > 0) && ((TriggerCandle > 0) || ((TriggerCandle == 0) && (LastAlertDirection != -1))))
	{
		Text = AlertText + "Down Arrow Sell Now: " + Symbol() + " - " + EnumToString((ENUM_TIMEFRAMES)Period()) + " - Down.";
		if (EnableNativeAlerts) Alert(Text);
		if (EnableEmailAlerts) SendMail(AlertEmailSubject + "Down Arrow Sell Now", Text);
		if (EnableSoundAlerts) PlaySound(SoundFileName);
		if (EnablePushAlerts) SendNotification(Text);
		LastAlertTime = Time[0];
		LastAlertDirection = -1;

	}
}
   return(0);
}