private static DateTime GetEnd(DateTime time, TimeInterval interval, TimeIntervalOptions opts)
{
DateTime result;
switch (interval)
{
case TimeInterval.Monthly:
result = time.AddMonths(1);
break;
case TimeInterval.Weekly:
result = time.AddDays(7);
break;
case TimeInterval.Daily:
default:
result = time.AddDays(1);
break;
}
if (HasFlag(opts, TimeIntervalOptions.Inclusive))
{
result = result.AddDays(-1);
}
return(result);
}
public static DateRange GetRange(DateTime date, TimeInterval interval, TimeIntervalOptions opts)
{
DateTime start = GetStart(date.Date, interval, opts);
return(new DateRange()
{
StartDate = start,
EndDate = GetEnd(start, interval, opts)
});
}
private static DateTime GetStart(DateTime time, TimeInterval interval, TimeIntervalOptions opts)
{
if (!HasFlag(opts, TimeIntervalOptions.FitToPeriod))
{
return(time);
}
switch (interval)
{
case TimeInterval.Monthly:
return(time.AddDays(-(time.Day - 1)));
case TimeInterval.Weekly:
return(time.AddDays(-(int)time.DayOfWeek));
case TimeInterval.Daily:
default:
return(time);
}
}
private static bool HasFlag(TimeIntervalOptions opts, TimeIntervalOptions flag)
{
return(((int)opts & (int)flag) != 0);
}
