import 'package:intl/intl.dart';
import 'main.dart';

class WeekManager {
  final DateTime _deadline;
  DateTime _currentDate;
  Weekday _currentDay;

  WeekManager(this._deadline, this._currentDate)
      : _currentDay = _getCurrentDayOfWeek(_currentDate);

  DateTime get deadline => _deadline;
  DateTime get currentDate => _currentDate;
  Weekday get currentDay => _currentDay;

  static Weekday _getCurrentDayOfWeek(DateTime date) {
    switch (date.weekday) {
      case 1:
        return Weekday.Monday;
      case 2:
        return Weekday.Tuesday;
      case 3:
        return Weekday.Wednesday;
      case 4:
        return Weekday.Thursday;
      case 5:
        return Weekday.Friday;
      case 6:
        return Weekday.Saturday;
      case 7:
        return Weekday.Sunday;
      default:
        return Weekday.Monday;
    }
  }

  int get daysUntilDeadline {
    return _deadline.difference(_currentDate).inDays;
  }

  String formatDate(DateTime date) {
    DateFormat formatter = DateFormat('dd-MM-yyyy');
    return formatter.format(date);
  }

  void incrementCurrentDate() {
    _currentDate = _currentDate.add(const Duration(days: 1));
  }

  void updateCurrentDay() {
    _currentDay = _getCurrentDayOfWeek(_currentDate);
  }
}