Initial draft

lib/widget/home/bloc/navigation_bloc.dart

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+// Navigation events
+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import 'navigation_event.dart';
+import 'navigation_state.dart';
+
+// Navigation BLoC
+class NavigationBloc extends Bloc<NavigationEvent, NavigationState> {
+  NavigationBloc() : super(NavigateToRoute('/scan', index: 0)) {
+    on<NavigateToCars>((event, emit) {
+      emit(NavigateToRoute('/cars', index: 2));
+    });
+
+    on<NavigateToDeliveries>((event, emit) {
+      emit(NavigateToRoute('/deliveries', index: 1));
+    });
+
+    on<NavigateToDelivery>((event, emit) {
+      emit(NavigateToRoute('/delivery'));
+    });
+
+    on<NavigateToScan>((event, emit) {
+      emit(NavigateToRoute('/scan', index: 0));
+    });
+
+    // Add more navigation handlers...
+  }
+}

lib/widget/home/bloc/navigation_event.dart

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+abstract class NavigationEvent {}
+
+class NavigateToHome extends NavigationEvent {}
+class NavigateToDeliveries extends NavigationEvent {}
+class NavigateToDelivery extends NavigationEvent {}
+class NavigateToScan extends NavigationEvent {}
+class NavigateToCars extends NavigationEvent {}
+class GoBack extends NavigationEvent {}

lib/widget/home/bloc/navigation_state.dart

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+// Navigation states
+abstract class NavigationState {}
+
+class NavigationInitial extends NavigationState {}
+class NavigateToRoute extends NavigationState {
+  final String routeName;
+  final int? index;
+  final Object? arguments;
+
+  NavigateToRoute(this.routeName, {this.arguments, this.index});
+}