class TrainingSession {
  final int? id;
  final DateTime date;
  final int sets;
  final double weightLeft;
  final double weightRight;
  final int repsPerSet;
  final int duration; // in seconds
  final String program;
  final int blockDay;

  TrainingSession({
    this.id,
    required this.date,
    required this.sets,
    required this.weightLeft,
    required this.weightRight,
    required this.repsPerSet,
    required this.duration,
    required this.program,
    required this.blockDay,
  });

  // Convert a TrainingSession into a Map. The keys must correspond to the names of the
  // columns in the database.
  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'date': date.toIso8601String(),
      'sets': sets,
      'weightLeft': weightLeft,
      'weightRight': weightRight,
      'repsPerSet': repsPerSet,
      'duration': duration,
      'program': program,
      'blockDay': blockDay,
    };
  }

  // Implement fromMap
  factory TrainingSession.fromMap(Map<String, dynamic> map) {
    return TrainingSession(
      id: map['id'],
      date: DateTime.parse(map['date']),
      sets: map['sets'],
      weightLeft: map['weightLeft'],
      weightRight: map['weightRight'],
      repsPerSet: map['repsPerSet'],
      duration: map['duration'],
      program: map['program'] ?? 'giant_1.0',
      blockDay: map['blockDay'] ?? 1,
    );
  }

  TrainingSession copyWith({
    int? id,
    DateTime? date,
    int? sets,
    double? weightLeft,
    double? weightRight,
    int? repsPerSet,
    int? duration,
    String? program,
    int? blockDay,
  }) {
    return TrainingSession(
      id: id ?? this.id,
      date: date ?? this.date,
      sets: sets ?? this.sets,
      weightLeft: weightLeft ?? this.weightLeft,
      weightRight: weightRight ?? this.weightRight,
      repsPerSet: repsPerSet ?? this.repsPerSet,
      duration: duration ?? this.duration,
      program: program ?? this.program,
      blockDay: blockDay ?? this.blockDay,
    );
  }

  @override
  String toString() {
    return 'TrainingSession{id: $id, date: $date, sets: $sets}';
  }
}