/// <summary>
/// Returns the next time this schedule should run given the last run date.
/// </summary>
/// <returns></returns>
public DateTime GetScheduledDate(DateTime lastRunDate)
{
lastRunDate = lastRunDate.StartOfMillisecond();
DateTime currentDate = SystemTime.Now();
if (ScheduledFrequencyDate is DailyFrequency)
{
DailyFrequency frequency = (DailyFrequency)ScheduledFrequencyDate;
#region DailyFrequencyCalculation
//The minimum date is a minimum of either todays date or the next run date
//whichever is greater.
DateTime nextRunDate = lastRunDate;
DateTime todaysDate = SystemTime.Now();
DateTime minDate = nextRunDate > todaysDate ? nextRunDate : todaysDate;
minDate = minDate.StartOfMillisecond().AddSeconds(1);
if (nextRunDate.Date < minDate.Date)
{
nextRunDate = frequency.GetNextDay(nextRunDate, minDate);
}
bool setDateTime = false;
while (setDateTime == false)
{
DateTime?nextValidTime = ScheduledFrequencyTime.CalculateNextIntervalTime(nextRunDate, minDate, true);
if (nextValidTime != null)
{
nextRunDate = nextValidTime.Value;
setDateTime = true;
}
if (setDateTime == false)
{
nextRunDate = frequency.GetNextDay(nextRunDate, minDate);
}
}
return(nextRunDate);
#endregion DailyFrequencyCalculation
}
else if (ScheduledFrequencyDate is WeeklyFrequency)
{
WeeklyFrequency frequency = (WeeklyFrequency)ScheduledFrequencyDate;
#region WeeklyFrequencyCalculation
//Increment last run date until date >= today's date.
DateTime nextRunDate = lastRunDate;
DateTime lastRunWeek = lastRunDate.StartOfWeek(DayOfWeek.Monday);
DateTime thisWeek = currentDate.StartOfWeek(DayOfWeek.Monday);
DateTime minDate = nextRunDate > currentDate ? nextRunDate : currentDate;
minDate = minDate.StartOfMillisecond().AddSeconds(1);
DateTime currentValidDay = frequency.GetNextDay(minDate.AddDays(-1));
minDate = currentValidDay > minDate ? currentValidDay : minDate;
DateTime minWeek = minDate.StartOfWeek(DayOfWeek.Monday);
//Ignore any weeks less than the week we want to check
if (nextRunDate.Date.StartOfWeek(DayOfWeek.Monday) < minWeek.Date)
{
nextRunDate = frequency.GetNextDay(nextRunDate, minDate);
}
bool setDateTime = false;
while (setDateTime == false)
{
DateTime?nextValidTime = ScheduledFrequencyTime.CalculateNextIntervalTime(nextRunDate, minDate, true);
if (nextValidTime != null)
{
nextRunDate = nextValidTime.Value;
setDateTime = true;
}
if (setDateTime == false)
{
nextRunDate = frequency.GetNextDay(nextRunDate, minDate);
}
}
return(nextRunDate);
#endregion WeeklyFrequencyCalculation
}
else if (ScheduledFrequencyDate is MonthlyFrequency)
{
MonthlyFrequency frequency = (MonthlyFrequency)ScheduledFrequencyDate;
#region MonthlyFrequencyCalculation
//Increment last run date until date >= today's date.
DateTime nextRunDate = lastRunDate;
DateTime lastRunMonth = lastRunDate.StartOfMonth();
DateTime thisMonth = SystemTime.Now().StartOfMonth();
DateTime minDate = lastRunDate > currentDate ? lastRunDate : currentDate;
DateTime currentValidDay = frequency.GetNextDay(minDate.AddDays(-1));
minDate = minDate.StartOfMillisecond().AddSeconds(1);
minDate = currentValidDay > minDate ? currentValidDay : minDate;
DateTime minMonth = minDate.StartOfMonth();
//Ignore any months less than the month we want to check
if (nextRunDate.Date.StartOfMonth() < minMonth)
{
nextRunDate = frequency.GetNextDay(nextRunDate, minDate);
}
bool setDateTime = false;
while (setDateTime == false)
{
DateTime?nextValidTime = ScheduledFrequencyTime.CalculateNextIntervalTime(nextRunDate, minDate, true);
if (nextValidTime != null)
{
nextRunDate = nextValidTime.Value;
setDateTime = true;
}
if (setDateTime == false)
{
nextRunDate = frequency.GetNextDay(nextRunDate, minDate);
}
}
return(nextRunDate);
#endregion MonthlyFrequencyCalculation
}
else
{
throw new NotImplementedException();
}
}
