public DateTime GetNextDateTime(DateTime fromMoment)
{
Time fromMomentTime = fromMoment.GetTime();
short fromTime = fromMomentTime.ToShort();
// Check if we have to apply the initial run
if (_startingTime.ToShort() >= fromTime || _endingTime.ToShort() <= fromTime)
{
return(fromMoment.ForwardToTime(_startingTime));
}
// Calculate what the closest interval point is
// First calculate the difference in minutes
int diffMinutes = (fromMomentTime.Hour - _startingTime.Hour) * Time.MaxMinute +
fromMomentTime.Minute - _startingTime.Minute;
// Calculate how many times the timeout has passed in this difference
float timeoutTimes = (float)diffMinutes / GetMinuteTimeout();
// Check if this is approximately a round number
// Because then we have to undertake action now!
if (timeoutTimes % 1 < double.Epsilon)
{
return(fromMoment);
}
DateTime nextDateTime = fromMoment.AddMinutesRound((int)(Math.Ceiling(timeoutTimes) * GetMinuteTimeout()));
// Make sure the time does not exceed the end time
if (nextDateTime.GetTime() > _endingTime)
{
return(fromMoment.ForwardToTime(_startingTime));
}
return(nextDateTime);
}