// Model: Note
// - Representa una nota guardada en la app.
// - `id` viene de SQLite y sirve como identificador estable.
// - `index` representa el orden visual dentro de la lista.
class Note {
  const Note({
    this.id,
    required this.title,
    required this.body,
    required this.createdAt,
    required this.updatedAt,
    required this.index,
  });

  final int? id;
  final String title;
  final String body;
  final DateTime createdAt;
  final DateTime updatedAt;
  final int index;

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

  @override
  bool operator ==(Object other) {
    if (identical(this, other)) {
      return true;
    }

    return other is Note && id != null && other.id == id;
  }

  @override
  int get hashCode => id?.hashCode ?? Object.hash(title, body, createdAt, updatedAt, index);
}