feat: Option to duplicate existing book

assets/translations/en-US.json

@@ -288,5 +288,7 @@
     "wait_for_downloading_to_finish": "Wait for downloading to finish",
     "save_without_cover": "Save without the cover",
     "search_online_for_cover": "Search online for the cover",
-    "book_cover": "book cover"
+    "book_cover": "book cover",
+    "duplicate_book": "Duplicate book",
+    "copy_book": "copy"
 }

lib/generated/locale_keys.g.dart

@@ -288,4 +288,6 @@ abstract class LocaleKeys {
   static const saveWithoutCover = 'save_without_cover';
   static const searchOnlineForCover = 'search_online_for_cover';
   static const bookCover = 'book_cover';
+  static const duplicateBook = 'duplicate_book';
+  static const copyBook = 'copy_book';
 }

lib/ui/add_book_screen/add_book_screen.dart

@@ -30,13 +30,15 @@ class AddBookScreen extends StatefulWidget {
     this.fromOpenLibrary = false,
     this.fromOpenLibraryEdition = false,
     this.editingExistingBook = false,
+    this.duplicatingBook = false,
     this.coverOpenLibraryID,
     this.work,
   });
 
   final bool fromOpenLibrary;
   final bool fromOpenLibraryEdition;
   final bool editingExistingBook;
+  final bool duplicatingBook;
   final int? coverOpenLibraryID;
   final String? work;
 
@@ -85,7 +87,9 @@ class _AddBookScreenState extends State<AddBookScreen> {
     _notesCtrl.text = book.notes ?? '';
 
     if (!widget.fromOpenLibrary && !widget.fromOpenLibraryEdition) {
-      context.read<EditBookCoverCubit>().setCover(book.getCoverBytes());
+      if (!widget.duplicatingBook) {
+        context.read<EditBookCoverCubit>().setCover(book.getCoverBytes());
+      }
     }
   }
 
@@ -143,6 +147,10 @@ class _AddBookScreenState extends State<AddBookScreen> {
     if (!mounted) return;
     Navigator.pop(context);
 
+    if (widget.duplicatingBook) {
+      Navigator.pop(context);
+    }
+
     if (widget.fromOpenLibrary) {
       Navigator.pop(context);
       if (!widget.fromOpenLibraryEdition) return;

lib/ui/book_screen/widgets/book_screen_app_bar.dart

@@ -92,6 +92,7 @@ class BookScreenAppBar extends StatelessWidget implements PreferredSizeWidget {
   Widget build(BuildContext context) {
     final moreButtonOptions = [
       LocaleKeys.edit_book.tr(),
+      LocaleKeys.duplicateBook.tr(),
     ];
 
     // Needed to add BlocBuilder because the status bar was changing
@@ -116,7 +117,7 @@ class BookScreenAppBar extends StatelessWidget implements PreferredSizeWidget {
           actions: [
             BlocBuilder<CurrentBookCubit, Book>(
               builder: (context, state) {
-                if (moreButtonOptions.length == 1) {
+                if (moreButtonOptions.length == 2) {
                   if (state.deleted == true) {
                     moreButtonOptions.add(LocaleKeys.restore_book.tr());
                     moreButtonOptions.add(
@@ -151,14 +152,34 @@ class BookScreenAppBar extends StatelessWidget implements PreferredSizeWidget {
                               ),
                             );
                           } else if (choice == moreButtonOptions[1]) {
+                            final cover = state.getCoverBytes();
+
+                            context.read<EditBookCoverCubit>().setCover(cover);
+                            final newBook = state.copyWith(
+                              title:
+                                  '${state.title} ${LocaleKeys.copyBook.tr()}',
+                            );
+                            newBook.id = null;
+
+                            context.read<EditBookCubit>().setBook(newBook);
+                            context.read<EditBookCubit>().setHasCover(true);
+
+                            Navigator.of(context).push(
+                              MaterialPageRoute(
+                                builder: (_) => const AddBookScreen(
+                                  duplicatingBook: true,
+                                ),
+                              ),
+                            );
+                          } else if (choice == moreButtonOptions[2]) {
                             if (state.deleted == false) {
                               _showDeleteRestoreDialog(
                                   context, true, null, state);
                             } else {
                               _showDeleteRestoreDialog(
                                   context, false, null, state);
                             }
-                          } else if (choice == moreButtonOptions[2]) {
+                          } else if (choice == moreButtonOptions[3]) {
                             _showDeleteRestoreDialog(
                               context,
                               true,