open ai service

books_flutter/lib/bloc/book/book_bloc.dart

@@ -0,0 +1,47 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+import '../../constants/constants.dart';
+import 'book_event.dart';
+import 'book_state.dart';
+
+class BookBloc extends Bloc<BookEvent, BookState> {
+  BookBloc() : super(const BookState(books: initialBooks)) {
+    on<AddBook>((event, emit) {
+      emit(BookState(books: [...state.books, event.book]));
+    });
+
+    on<UpdateBook>((event, emit) {
+      final updated = state.books.map((b) {
+        return b.id == event.book.id ? event.book : b;
+      }).toList();
+      emit(BookState(books: updated));
+    });
+
+    on<DeleteBook>((event, emit) {
+      emit(
+        BookState(books: state.books.where((b) => b.id != event.id).toList()),
+      );
+    });
+
+    on<ToggleFavorite>((event, emit) {
+      final updated = state.books.map((b) {
+        if (b.id != event.id) return b;
+        return (
+          id: b.id,
+          title: b.title,
+          author: b.author,
+          genre: b.genre,
+          annotation: b.annotation,
+          coverUrl: b.coverUrl,
+          pages: b.pages,
+          language: b.language,
+          publishedYear: b.publishedYear,
+          rating: b.rating,
+          status: b.status,
+          progress: b.progress,
+          isFavorite: !b.isFavorite,
+        );
+      }).toList();
+      emit(BookState(books: updated));
+    });
+  }
+}