step

lib/shared/providers/billing_provider.dart

@@ -0,0 +1,8 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../features/dashboard/provider.dart';
+import '../services/billing_service.dart';
+
+final billingServiceProvider = Provider<BillingService>((ref) {
+  final prefs = ref.watch(sharedPreferencesProvider);
+  return MockBillingService(prefs);
+});

lib/shared/providers/google_auth_provider.dart

@@ -0,0 +1,12 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:google_sign_in/google_sign_in.dart';
+import '../services/google_auth_service.dart';
+
+final googleAuthProvider = Provider<GoogleAuthService>((ref) {
+  return GoogleAuthService();
+});
+
+final googleCurrentUserProvider = StreamProvider<GoogleSignInAccount?>((ref) {
+  final service = ref.watch(googleAuthProvider);
+  return service.onCurrentUserChanged;
+});