open ai service

books_flutter/lib/bloc/library/library_bloc.dart

@@ -0,0 +1,21 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'library_event.dart';
+import 'library_state.dart';
+
+class LibraryBloc extends Bloc<LibraryEvent, LibraryState> {
+  LibraryBloc() : super(const LibraryState()) {
+    on<UpdateSearchQuery>(_onUpdateSearchQuery);
+    on<ChangeTab>(_onChangeTab);
+  }
+
+  void _onUpdateSearchQuery(
+    UpdateSearchQuery event,
+    Emitter<LibraryState> emit,
+  ) {
+    emit(state.copyWith(searchQuery: event.query));
+  }
+
+  void _onChangeTab(ChangeTab event, Emitter<LibraryState> emit) {
+    emit(state.copyWith(tabIndex: event.tabIndex));
+  }
+}

books_flutter/lib/bloc/library/library_event.dart

@@ -0,0 +1,11 @@
+sealed class LibraryEvent {}
+
+class UpdateSearchQuery extends LibraryEvent {
+  final String query;
+  UpdateSearchQuery(this.query);
+}
+
+class ChangeTab extends LibraryEvent {
+  final int tabIndex;
+  ChangeTab(this.tabIndex);
+}

books_flutter/lib/bloc/library/library_state.dart

@@ -0,0 +1,13 @@
+class LibraryState {
+  final String searchQuery;
+  final int tabIndex;
+
+  const LibraryState({this.searchQuery = '', this.tabIndex = 0});
+
+  LibraryState copyWith({String? searchQuery, int? tabIndex}) {
+    return LibraryState(
+      searchQuery: searchQuery ?? this.searchQuery,
+      tabIndex: tabIndex ?? this.tabIndex,
+    );
+  }
+}