bookshelf/bookshelf_flutter/lib/bloc/app_state.dart

import 'package:equatable/equatable.dart';
import '../models/models.dart';

class AppState extends Equatable {
  final AppScreen currentScreen;
  final List<Book> books;
  final Book? selectedBook;
  final Map<String, dynamic>? prefilledData;
  final String searchQuery;
  final bool isLoading;
  final String? errorMessage;

  const AppState({
    this.currentScreen = AppScreen.library,
    this.books = const [],
    this.selectedBook,
    this.prefilledData,
    this.searchQuery = '',
    this.isLoading = false,
    this.errorMessage,
  });

  AppState copyWith({
    AppScreen? currentScreen,
    List<Book>? books,
    Book? selectedBook,
    Map<String, dynamic>? prefilledData,
    String? searchQuery,
    bool? isLoading,
    String? errorMessage,
  }) {
    return AppState(
      currentScreen: currentScreen ?? this.currentScreen,
      books: books ?? this.books,
      selectedBook: selectedBook,
      prefilledData: prefilledData ?? this.prefilledData,
      searchQuery: searchQuery ?? this.searchQuery,
      isLoading: isLoading ?? this.isLoading,
      errorMessage: errorMessage ?? this.errorMessage,
    );
  }

  @override
  List<Object?> get props => [
        currentScreen,
        books,
        selectedBook,
        prefilledData,
        searchQuery,
        isLoading,
        errorMessage,
      ];
}