weekdayOf method

DateTime weekdayOf({ required int year, required int month, required Weekday day, bool utc = true, })

Returns the DateTime for day of the week of the selected week for the given year and month.

Implementation

DateTime weekdayOf({
  required int year,
  required int month,
  required Weekday day,
  bool utc = true,
}) {
  late final DateTime firstDayOfMonth;
  if (utc) {
    firstDayOfMonth = DateTime.utc(year, month);
  } else {
    firstDayOfMonth = DateTime(year, month);
  }
  var weekDay = firstDayOfMonth.nextWeekday(day);
  for (final week in [first, second, third, fourth]) {
    if (week == this) {
      return weekDay;
    } else {
      weekDay = weekDay.addDays(1).nextWeekday(day);
    }
  }
  if (weekDay.compareTo(firstDayOfMonth.lastDayOfMonth) <= 0) {
    return weekDay;
  } else {
    return weekDay.subtractDays(1).previousWeekday(day);
  }
}