private static string LastDateValue(TimexProperty timex, DateObject date)
{
if (timex.Month != null && timex.DayOfMonth != null)
{
return(TimexValue.DateValue(new TimexProperty
{
Year = date.Year - 1,
Month = timex.Month,
DayOfMonth = timex.DayOfMonth,
}));
}
if (timex.DayOfWeek != null)
{
var day = timex.DayOfWeek == 7 ? DayOfWeek.Sunday : (DayOfWeek)timex.DayOfWeek;
var result = TimexDateHelpers.DateOfLastDay(day, date);
return(TimexValue.DateValue(new TimexProperty
{
Year = result.Year,
Month = result.Month,
DayOfMonth = result.Day,
}));
}
return(string.Empty);
}
private static DateObject GenerateWeekDate(TimexProperty timex, DateObject date, bool isBefore)
{
DateObject start;
if (timex.WeekOfMonth == null && timex.WeekOfYear == null)
{
var day = timex.DayOfWeek == 7 ? DayOfWeek.Sunday : (DayOfWeek)timex.DayOfWeek;
if (isBefore)
{
start = TimexDateHelpers.DateOfLastDay(day, date);
}
else
{
start = TimexDateHelpers.DateOfNextDay(day, date);
}
}
else
{
int dayOfWeek = timex.DayOfWeek.Value - 1;
int year = timex.Year ?? date.Year;
if (timex.WeekOfYear != null)
{
int weekOfYear = timex.WeekOfYear.Value;
start = TimexHelpers.FirstDateOfWeek(year, weekOfYear, CultureInfo.InvariantCulture).AddDays(dayOfWeek);
if (timex.Year == null)
{
if (isBefore && start > date)
{
start = TimexHelpers.FirstDateOfWeek(year - 1, weekOfYear, CultureInfo.InvariantCulture).AddDays(dayOfWeek);
}
else if (!isBefore && start < date)
{
start = TimexHelpers.FirstDateOfWeek(year + 1, weekOfYear, CultureInfo.InvariantCulture).AddDays(dayOfWeek);
}
}
}
else
{
int month = timex.Month ?? date.Month;
int weekOfMonth = timex.WeekOfMonth.Value;
start = TimexHelpers.GenerateMonthWeekDateStart(year, month, weekOfMonth).AddDays(dayOfWeek);
if (timex.Year == null || timex.Month == null)
{
if (isBefore && start > date)
{
start = TimexHelpers.GenerateMonthWeekDateStart(timex.Month != null ? year - 1 : year, timex.Month == null ? month - 1 : month, weekOfMonth).AddDays(dayOfWeek);
}
else if (!isBefore && start < date)
{
start = TimexHelpers.GenerateMonthWeekDateStart(timex.Month != null ? year + 1 : year, timex.Month == null ? month + 1 : month, weekOfMonth).AddDays(dayOfWeek);
}
}
}
}
return(start);
}
public static string LastWeek(System.DateTime date = default(System.DateTime))
{
var d = (date == default(System.DateTime)) ? System.DateTime.Now : date;
var start = TimexDateHelpers.DateOfLastDay(DayOfWeek.Monday, d);
start = start.AddDays(-7);
var t = TimexProperty.FromDate(start);
t.Days = 7;
return(t.TimexValue);
}
private static Tuple <string, string> WeekDateRange(int year, int weekOfYear)
{
var dateInWeek = new DateObject(year, 1, 1) + TimeSpan.FromDays((weekOfYear - 1) * 7);
var start = TimexDateHelpers.DateOfLastDay(DayOfWeek.Monday, dateInWeek);
var end = TimexDateHelpers.DateOfLastDay(DayOfWeek.Monday, dateInWeek + TimeSpan.FromDays(7));
return(new Tuple <string, string>(
TimexValue.DateValue(new TimexProperty {
Year = start.Year, Month = start.Month, DayOfMonth = start.Day
}),
TimexValue.DateValue(new TimexProperty {
Year = end.Year, Month = end.Month, DayOfMonth = end.Day
})));
}