feat: use initialization page and providers

packages/flutter_app/lib/initialization_provider.dart

@@ -2,6 +2,7 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 import 'features/user_device/user_device_provider.dart';
+import 'package_adaptor/configurator_provider.dart';
 import 'package_adaptor/package_info_provider.dart';
 import 'util/providers/providers.dart';
 
@@ -21,4 +22,6 @@ Future<void> initialization(Ref ref) async {
     ref.watch(packageInfoInitializingProvider.future),
     ref.watch(userDeviceInitializingProvider.future),
   ]);
+  final configurator = ref.watch(configuratorProvider);
+  await configurator.fetchAndActivate();
 }

packages/flutter_app/lib/main_app.dart

@@ -5,6 +5,7 @@ import 'package:themes/themes.dart';
 
 import 'features/theme_selector/theme_selector.dart';
 import 'gen/strings.g.dart';
+import 'pages/initialization_page.dart';
 import 'router/router.dart';
 import 'util/providers/scaffold_messenger_key_provider.dart';
 
@@ -29,6 +30,9 @@ class MainApp extends ConsumerWidget {
       ],
       supportedLocales: AppLocaleUtils.supportedLocales,
       scaffoldMessengerKey: ref.watch(scaffoldMessengerKeyProvider),
+      builder: (context, child) {
+        return InitializationPage(onInitialized: (_) => child!);
+      },
     );
   }
 }

packages/flutter_app/lib/package_adaptor/configurator_provider.dart

@@ -0,0 +1,15 @@
+import 'package:altfire_configurator/altfire_configurator.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'configurator_provider.g.dart';
+
+/// Provides a [Configurator] to retrieve parameters using "RemoteConfig".
+///
+/// It is recommended to call [Configurator.fetchAndActivate] before using
+/// the parameters (e.g., at app startup) in order to fetch and activate them
+/// for use in the app.
+@Riverpod(keepAlive: true)
+Configurator configurator(Ref ref) {
+  return Configurator();
+}

packages/flutter_app/lib/package_adaptor/package_info_provider.dart

@@ -6,8 +6,9 @@ part 'package_info_provider.g.dart';
 
 /// Providers that need to initialize asynchronously only once at startup.
 @Riverpod(keepAlive: true)
-Future<PackageInfo> packageInfoInitializing(Ref ref) async =>
-    PackageInfo.fromPlatform();
+Future<PackageInfo> packageInfoInitializing(Ref ref) async {
+  return PackageInfo.fromPlatform();
+}
 
 /// Provide metadata for the application.
 ///

packages/flutter_app/lib/pages/initialization_page.dart

@@ -4,13 +4,16 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
 
 import '../initialization_provider.dart';
 
+/// The first page.
 class InitializationPage extends ConsumerWidget {
-  const InitializationPage({super.key});
+  const InitializationPage({super.key, required this.onInitialized});
+
+  final WidgetBuilder onInitialized;
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     return switch (ref.watch(initializationProvider)) {
-      AsyncData(isLoading: false) => throw AssertionError(),
+      AsyncData(isLoading: false) => onInitialized(context),
       AsyncError(:final error) => _ErrorPage(
           error,
           onRetry: () => ref.invalidate(initializationProvider),

packages/flutter_app/lib/router/app_routes.dart

@@ -1,28 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 
-import '../pages/initialization_page.dart';
 import '../pages/main/main_page.dart';
 import 'branches/branches.dart';
 
 part 'app_routes.g.dart';
 
-@TypedGoRoute<InitializationRoute>(
-  name: InitializationRoute.name,
-  path: InitializationRoute.path,
-)
-class InitializationRoute extends GoRouteData {
-  const InitializationRoute();
-
-  static const String name = '/init';
-  static const String path = '/init';
-
-  @override
-  Page<void> buildPage(BuildContext context, GoRouterState state) {
-    return const NoTransitionPage(child: InitializationPage());
-  }
-}
-
 @TypedStatefulShellRoute<MainShellRouteData>(
   branches: [
     TypedStatefulShellBranch<HomeShellBranchData>(

packages/flutter_app/lib/router/router_provider.dart

@@ -5,7 +5,6 @@ import 'package:go_router/go_router.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
-import '../initialization_provider.dart';
 import '../package_adaptor/tracker_provider.dart';
 import '../pages/not_found_page/error_page.dart';
 import '../util/logger.dart';
@@ -16,16 +15,12 @@ part 'router_provider.g.dart';
 
 @Riverpod(keepAlive: true)
 Raw<GoRouter> router(Ref ref) {
-  final initialization = ref.watch(initializationProvider);
   final tracker = ref.watch(trackerProvider);
 
   late final GoRouter router;
   router = GoRouter(
     routes: $appRoutes,
     redirect: (context, state) {
-      if (initialization.isLoading || initialization.hasError) {
-        return InitializationRoute.path;
-      }
       if (state.matchedLocation == '/') {
         return HomeRouteData.path;
       }

packages/flutter_app/test/pages/riverpod_example_page/async_notifier_provider_page/async_notifier_provider_page_test.mocks.dart

@@ -1,4 +1,4 @@
-// Mocks generated by Mockito 5.4.4 from annotations
+// Mocks generated by Mockito 5.4.5 from annotations
 // in flutter_app/test/pages/riverpod_example_page/async_notifier_provider_page/async_notifier_provider_page_test.dart.
 // Do not manually edit this file.
 
@@ -17,6 +17,7 @@ import 'package:mockito/mockito.dart' as _i1;
 // ignore_for_file: deprecated_member_use_from_same_package
 // ignore_for_file: implementation_imports
 // ignore_for_file: invalid_use_of_visible_for_testing_member
+// ignore_for_file: must_be_immutable
 // ignore_for_file: prefer_const_constructors
 // ignore_for_file: unnecessary_parenthesis
 // ignore_for_file: camel_case_types

packages/flutter_app/test/util/network_connectivity/connectivity_provider_test.mocks.dart

@@ -1,4 +1,4 @@
-// Mocks generated by Mockito 5.4.4 from annotations
+// Mocks generated by Mockito 5.4.5 from annotations
 // in flutter_app/test/util/network_connectivity/connectivity_provider_test.dart.
 // Do not manually edit this file.
 
@@ -18,6 +18,7 @@ import 'package:mockito/mockito.dart' as _i1;
 // ignore_for_file: deprecated_member_use_from_same_package
 // ignore_for_file: implementation_imports
 // ignore_for_file: invalid_use_of_visible_for_testing_member
+// ignore_for_file: must_be_immutable
 // ignore_for_file: prefer_const_constructors
 // ignore_for_file: unnecessary_parenthesis
 // ignore_for_file: camel_case_types