notepad/lib/models/note.dart

class Note {
  final String id;
  final String title;
  final String content;
  final DateTime createdAt;
  final DateTime updatedAt;

  const Note({
    required this.id,
    required this.title,
    required this.content,
    required this.createdAt,
    required this.updatedAt,
  });

  Note copyWith({
    String? title,
    String? content,
    DateTime? updatedAt,
  }) {
    return Note(
      id: id,
      title: title ?? this.title,
      content: content ?? this.content,
      createdAt: createdAt,
      updatedAt: updatedAt ?? this.updatedAt,
    );
  }

  Map<String, dynamic> toJson() => {
        'id': id,
        'title': title,
        'content': content,
        'created_at': createdAt.toIso8601String(),
        'updated_at': updatedAt.toIso8601String(),
      };

  factory Note.fromJson(Map<String, dynamic> json) => Note(
        id: json['id'] as String,
        title: json['title'] as String,
        content: json['content'] as String,
        createdAt: DateTime.parse(json['created_at'] as String),
        updatedAt: DateTime.parse(json['updated_at'] as String),
      );

  // SQLite row → Note
  factory Note.fromMap(Map<String, dynamic> map) => Note(
        id: map['id'] as String,
        title: map['title'] as String,
        content: map['content'] as String,
        createdAt: DateTime.parse(map['created_at'] as String),
        updatedAt: DateTime.parse(map['updated_at'] as String),
      );

  // Note → SQLite row
  Map<String, dynamic> toMap() => {
        'id': id,
        'title': title,
        'content': content,
        'created_at': createdAt.toIso8601String(),
        'updated_at': updatedAt.toIso8601String(),
      };

  @override
  String toString() => 'Note(id: $id, title: $title)';
}