enum TimecardStatus { needsReview, approved, disputed }

extension TimecardStatusX on TimecardStatus {
  String get label => switch (this) {
    TimecardStatus.needsReview => 'Needs review',
    TimecardStatus.approved => 'Approved',
    TimecardStatus.disputed => 'Disputed',
  };
}

class Timecard {
  Timecard({
    required this.id,
    required this.shiftId,
    required this.role,
    required this.business,
    required this.scheduledStart,
    required this.scheduledEnd,
    required this.clockIn,
    required this.clockOut,
    required this.breakMinutes,
    required this.rate,
    required this.status,
    required this.submittedAt,
    this.disputeNote,
  });

  final String id;
  final String shiftId;
  final String role;
  final String business;
  final DateTime scheduledStart;
  final DateTime scheduledEnd;
  final DateTime clockIn;
  final DateTime clockOut;
  final int breakMinutes;
  final double rate;
  final TimecardStatus status;
  final DateTime submittedAt;
  final String? disputeNote;

  DateTime get date =>
      DateTime(scheduledStart.year, scheduledStart.month, scheduledStart.day);

  Duration get worked {
    final d = clockOut.difference(clockIn) - Duration(minutes: breakMinutes);
    return d.isNegative ? Duration.zero : d;
  }

  double get amount => rate * worked.inMinutes / 60;

  /// Minutes late (positive) or early (negative) against the schedule.
  int get varianceMinutes => clockIn.difference(scheduledStart).inMinutes;

  Timecard copyWith({TimecardStatus? status, String? disputeNote}) => Timecard(
    id: id,
    shiftId: shiftId,
    role: role,
    business: business,
    scheduledStart: scheduledStart,
    scheduledEnd: scheduledEnd,
    clockIn: clockIn,
    clockOut: clockOut,
    breakMinutes: breakMinutes,
    rate: rate,
    status: status ?? this.status,
    submittedAt: submittedAt,
    disputeNote: disputeNote ?? this.disputeNote,
  );
}