fix: reject zero/negative-length WeeklyRange window

common-lib/timeRangeLib/constant.go

@@ -28,7 +28,7 @@ const (
 	WeekDaysNotPresent                   ErrorMessage = "weekdays, must be present for Weekly frequency"
 	WeekDayFromOrToNotPresent            ErrorMessage = "weekdayFrom, must be present for WeeklyRange frequency"
 	DayFromOrToNotPresent                ErrorMessage = "dayFrom, dayTo, must be present for Monthly frequency"
-	ToBeforeFrom                         ErrorMessage = "Invalid value of hourMinuteFrom or hourMinuteTo  for same day ,hourMinuteFrom >hourMinuteTo"
+	ToBeforeFrom                         ErrorMessage = "Invalid value of hourMinuteFrom or hourMinuteTo  for same day ,hourMinuteFrom > hourMinuteTo"
 	BothLessThanZeroAndFromGreaterThanTo ErrorMessage = "invalid value of DayFrom or DayTo,DayFrom and DayTo is less than zero and  dayFrom > dayTo"
 	DayFromOrToNotValid                  ErrorMessage = "invalid value of dayFrom or dayTo"
 	InvalidHourMinuteForWeeklyAndDaily   ErrorMessage = "HourMinuteFrom should be less than HourMinuteTo in daily or weekly Frequency"

common-lib/timeRangeLib/validator.go

@@ -86,6 +86,11 @@ func (tr TimeRange) ValidateTimeRange() error {
 		if (tr.WeekdayFrom < 0 || tr.WeekdayFrom > 6) || (tr.WeekdayTo < 0 || tr.WeekdayTo > 6) {
 			return errors.New(string(WeekDayOutsideRange))
 		}
+		// Same weekday with a non-positive intra-day span collapses the window to zero/negative
+		// duration, which stalls the next-window search. Reject it (mirrors the Monthly check).
+		if tr.WeekdayFrom == tr.WeekdayTo && isToBeforeFrom(tr.HourMinuteFrom, tr.HourMinuteTo) {
+			return errors.New(string(ToBeforeFrom))
+		}
 	case Monthly:
 		if tr.DayFrom == 0 || tr.DayTo == 0 {
 			return errors.New(string(DayFromOrToNotPresent))