packages/frontend/lib/features/project/models/persisted_project.dart

import 'package:archive/archive.dart';

import '../data/project_store.dart' show ProjectStore;

const _sentinel = Object();

class PersistedProject {
  const PersistedProject({
    required this.id,
    required this.name,
    required this.createdAt,
    required this.updatedAt,
    required this.lastOpenedAt,
    this.archive,
  });

  final String id;
  final String? name;
  final DateTime createdAt;
  final DateTime updatedAt;
  final DateTime lastOpenedAt;

  /// The project's file archive. This is `null` when the project was loaded
  /// as metadata-only (e.g. from [ProjectStore.listProjects]).
  final Archive? archive;

  /// Copies a project while allowing [name] to be explicitly set to `null`.
  ///
  /// A private sentinel distinguishes "do not change the name" from "clear the
  /// name", which is needed while prompt-created projects wait for title
  /// generation.
  PersistedProject copyWith({
    Object? name = _sentinel,
    DateTime? updatedAt,
    DateTime? lastOpenedAt,
    Object? archive = _sentinel,
  }) {
    return PersistedProject(
      id: id,
      name: name == _sentinel ? this.name : name as String?,
      createdAt: createdAt,
      updatedAt: updatedAt ?? this.updatedAt,
      lastOpenedAt: lastOpenedAt ?? this.lastOpenedAt,
      archive: archive == _sentinel ? this.archive : archive as Archive?,
    );
  }
}