import 'tag.dart';

class Todo {
  final int? id;
  String title;
  String description;
  bool isCompleted;
  DateTime createdAt;
  DateTime? completedAt;
  List<Tag> tags;

  Todo({
    this.id,
    required this.title,
    required this.description,
    this.isCompleted = false,
    required this.createdAt,
    this.completedAt,
    this.tags = const [],
  });

  Map<String, dynamic> toMap() {
    return {
      'id': id,
      'title': title,
      'description': description,
      'isCompleted': isCompleted ? 1 : 0,
      'createdAt': createdAt.toIso8601String(),
      'completedAt': completedAt?.toIso8601String(),
    };
  }

  static Todo fromMap(Map<String, dynamic> map) {
    return Todo(
      id: map['id'],
      title: map['title'],
      description: map['description'],
      isCompleted: map['isCompleted'] == 1,
      createdAt: DateTime.parse(map['createdAt']),
      completedAt: map['completedAt'] != null
          ? DateTime.parse(map['completedAt'])
          : null,
      tags: [],
    );
  }

  Todo copyWith({
    int? id,
    String? title,
    String? description,
    bool? isCompleted,
    DateTime? createdAt,
    DateTime? completedAt,
    List<Tag>? tags,
  }) {
    return Todo(
      id: id ?? this.id,
      title: title ?? this.title,
      description: description ?? this.description,
      isCompleted: isCompleted ?? this.isCompleted,
      createdAt: createdAt ?? this.createdAt,
      completedAt: completedAt ?? this.completedAt,
      tags: tags ?? this.tags,
    );
  }
}