private IEnumerable <DateTime?> CalculateNextDeliveryDateTimes(int maxOccurences)
{
var retVal = new List <DateTime?>();
DateTime utcNow = _dateTimeUtcNow.UtcNow;
//can not calculate a next delivery date if start or activate dates do not exist.
if (!StartDateTime.HasValue && !ActivateDateTime.HasValue)
{
return(retVal);
}
//check if the stop date exists and has already passed.
if (StopDateTime.HasValue && utcNow > StopDateTime.Value)
{
return(retVal);
}
//check if this is the first delivery
if (utcNow <= ActivateDateTime.Value)
{
retVal.Add(ActivateDateTime.Value);
return(retVal);
}
if (RepeatCode.GetValueOrDefault() == ScheduleRepeatCodes.Repeat)
{
//can not calculate nextDelivery if timeUnitcode is not set.
if (!RepeatTimeUnitCode.HasValue)
{
return(null);
}
switch (RepeatTimeUnitCode.GetValueOrDefault())
{
case ScheduleRepeatTimeUnitCodes.Hourly:
return(CalculateHourlyNextDeliveryDateTimes(utcNow, maxOccurences));
case ScheduleRepeatTimeUnitCodes.Daily:
return(CalculateDailyNextDeliveryDateTimes(utcNow, maxOccurences));
case ScheduleRepeatTimeUnitCodes.Weekly:
return(CalculateWeeklyNextDeliveryDateTimes(utcNow, maxOccurences));
case ScheduleRepeatTimeUnitCodes.Monthly:
return(CalculateMonthlyNextDeliveryDateTimes(utcNow, maxOccurences));
}
}
//not a repeated delivery, and the single delivery date has already passed.
return(null);
}
public RepeatCodeViewModel()
{
repeatCode = new RepeatCode();
Code = repeatCode.GenerateCode();
Coded = repeatCode.Code();
}
