import 'package:uuid/uuid.dart';

// Model: Note
// - Representa una nota guardada en la app.
// - `id` es el identificador local de SQLite (autoincrement).
// - `uuid` es el identificador global sincronizado con el servidor.
// - `index` representa el orden visual dentro de la lista.
// - `serverVersion` se usa para resolver conflictos en sync.
// - `isDeleted` marca eliminaciones blandas.
class Note {
  Note({
    this.id,
    String? uuid,
    required this.title,
    required this.body,
    required this.createdAt,
    required this.updatedAt,
    required this.index,
    this.serverVersion = 0,
    this.isDeleted = false,
    this.categoryId,
  }) : uuid = uuid ?? Uuid().v4();

  final int? id;
  final String uuid;
  final String title;
  final String body;
  final DateTime createdAt;
  final DateTime updatedAt;
  final int index;
  final int serverVersion;
  final bool isDeleted;
  final String? categoryId;

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

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

    return other is Note && uuid == other.uuid;
  }

  @override
  int get hashCode => uuid.hashCode;
}