//                                                                       CandleCountdown
//______________________________________________________________________________________

#property indicator_chart_window
#property indicator_buffers 0

#define OBJECT_NAME	"CandleCountdown"
#define MSG_PREFIX	"<=  "
#define MAX_VALUE		"999d hh:mm:ss"
#define DEFAULT_FONT	"Arial"

extern int    Right_Shift_from_Bar = 1;
extern color  clockcolor           = Gold;
extern int	  fontSize	           = 10;

int	  DAY_SECONDS;
string  MAX_PADDING;
int	  MAX_LENGTH;
	

int init()
{
   DAY_SECONDS	= PERIOD_D1 * 60;
	MAX_PADDING = "";
	int totalSpaces = StringLen(MSG_PREFIX + MAX_VALUE);
	for( int i = totalSpaces*1.5 + 1; i > 0; i--)
		MAX_PADDING = StringConcatenate(MAX_PADDING, " ");
	MAX_LENGTH = StringLen(MAX_PADDING);
	
	return(0);
}

	
int deinit()
{
	switch( UninitializeReason() ) {
		case REASON_CHARTCLOSE:
		case REASON_REMOVE:
		case REASON_RECOMPILE:
			ObjectDelete( OBJECT_NAME );
			break;
		case REASON_CHARTCHANGE:
		case REASON_PARAMETERS:
		case REASON_ACCOUNT:
			break;
	}

	return(0);
}


int start()
{
	datetime	barOpenTime 	= Time[0];
	bool		hasHours		   = (Period() > PERIOD_H1);
	bool		hasDays			= (Period() > PERIOD_D1);
	datetime	barCloseTime	= barOpenTime + Period()*60;
	datetime	leftUntilClose	= barCloseTime - TimeCurrent();
	string	msg				= "";
	bool		exists			= false;
	datetime	objectX			= barOpenTime + Period()*60*Right_Shift_from_Bar;
	double	objectY;
	string	fontName		   = NULL;
	
	if (leftUntilClose <= 0) leftUntilClose = 1;
	if (hasDays && (leftUntilClose / DAY_SECONDS>1))
	{
		msg = msg + (leftUntilClose / DAY_SECONDS-1) + "D+  ";
		leftUntilClose %= DAY_SECONDS;
	}
	msg = msg + TimeToStr(leftUntilClose, TIME_SECONDS);
	if (!hasHours) msg = StringSubstr(msg, 3);
	objectY = Bid - 1 * Point;
	msg = MSG_PREFIX + msg;
	msg = StringSubstr(MAX_PADDING, MAX_LENGTH - StringLen(msg)*1.5) + msg;
	
	if (ObjectFind(OBJECT_NAME) == -1)
	{
		ObjectCreate  (OBJECT_NAME, OBJ_TEXT, 0, objectX, objectY);
		ObjectSet	  (OBJECT_NAME, OBJPROP_COLOR, clockcolor);
		ObjectSetText (OBJECT_NAME, msg, fontSize, DEFAULT_FONT);
	}
	
	ObjectSet	  (OBJECT_NAME, OBJPROP_COLOR, clockcolor);
	ObjectMove	  (OBJECT_NAME, 0, objectX, objectY);
	ObjectSetText (OBJECT_NAME, msg, fontSize);

	return(0);
}