/// <summary>
/// Initializes a new instance of the <see cref="CalendarOperationProvider"/> class.
/// </summary>
/// <param name="calendar">The calendar.</param>
/// <param name="timeUnit">The time unit.</param>
public CalendarOperationProvider(ICalendar <ICalendarDay> calendar, CalendarTimeUnit timeUnit)
{
_calendar = calendar;
var factory = ClassFactory.Get <CalendarCountTermFactory>();
_countTerm = factory.GetCountTerm(timeUnit);
}
public DateTime Add(DateTime dateTime, CalendarTimeUnit timeUnit, int value)
{
if (value <= 0)
{
return(dateTime);
}
var factory = ClassFactory.Get <CalendarCountTermFactory>();
BaseCountTerm countTerm = factory.GetCountTerm(timeUnit);
IEnumerable <ICalendarDay> days = GetDays(countTerm, dateTime, value);
return(countTerm.Calculate(days, value));
}
protected IEnumerable <ICalendarDay> GetDays(BaseCountTerm countTerm, DateTime dateTime, int value)
{
int weeksCount = countTerm.GetWeeksCount(_calendar.WeekTemplate, value);
IEnumerable <ICalendarDay> days = GenerateWeeks(dateTime, weeksCount);
countTerm.ActualizeDays(ref days, dateTime);
int weekToGenerateCorrectAmount = countTerm.GetWeeksCount(days, value);
if (weekToGenerateCorrectAmount > weeksCount)
{
DateTime continueToDate = dateTime.AddDays(weeksCount * _calendar.WeekTemplate.Count);
List <ICalendarDay> extraDays = GenerateWeeks(continueToDate, weekToGenerateCorrectAmount - weeksCount);
days = days.Union(extraDays);
}
return(days);
}
