Refactor/improve logging

lib/app/view/app.dart

@@ -18,6 +18,7 @@ import 'package:flutter_news_app_mobile_client_full_source_code/router/router.da
 import 'package:flutter_news_app_mobile_client_full_source_code/status/view/view.dart';
 import 'package:go_router/go_router.dart';
 import 'package:kv_storage_service/kv_storage_service.dart';
+import 'package:logging/logging.dart';
 import 'package:ui_kit/ui_kit.dart';
 
 /// {@template app_widget}
@@ -223,6 +224,7 @@ class _AppViewState extends State<_AppView> {
   late final GoRouter _router;
   late final ValueNotifier<AppLifeCycleStatus> _statusNotifier;
   AppStatusService? _appStatusService;
+  final _routerLogger = Logger('GoRouter');
 
   @override
   void initState() {
@@ -257,6 +259,7 @@ class _AppViewState extends State<_AppView> {
       adService: widget.adService,
       navigatorKey: widget.navigatorKey,
       inlineAdCacheService: widget.inlineAdCacheService,
+      logger: _routerLogger,
     );
   }
 

lib/bootstrap.dart

@@ -39,6 +39,12 @@ Future<Widget> bootstrap(
   app_config.AppConfig appConfig,
   app_config.AppEnvironment environment,
 ) async {
+  Logger.root.level = Level.ALL;
+  Logger.root.onRecord.listen(
+    (record) => print(
+      '${record.level.name}: ${record.time}: ${record.loggerName}: ${record.message}',
+    ),
+  );
   WidgetsFlutterBinding.ensureInitialized();
   Bloc.observer = const AppBlocObserver();
   final logger = Logger('bootstrap');

lib/router/go_router_observer.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+import 'package:logging/logging.dart';
+
+class GoRouterObserver extends NavigatorObserver {
+  GoRouterObserver({required this.logger});
+
+  final Logger logger;
+
+  @override
+  void didPush(Route<dynamic> route, Route<dynamic>? previousRoute) {
+    logger.info(
+      'Pushed: ${route.settings.name} | from: ${previousRoute?.settings.name}',
+    );
+  }
+
+  @override
+  void didPop(Route<dynamic> route, Route<dynamic>? previousRoute) {
+    logger.info(
+      'Popped: ${route.settings.name} | to: ${previousRoute?.settings.name}',
+    );
+  }
+
+  @override
+  void didRemove(Route<dynamic> route, Route<dynamic>? previousRoute) {
+    logger.info(
+      'Removed: ${route.settings.name} | previous: ${previousRoute?.settings.name}',
+    );
+  }
+
+  @override
+  void didReplace({Route<dynamic>? newRoute, Route<dynamic>? oldRoute}) {
+    logger.info(
+      'Replaced: ${oldRoute?.settings.name} | with: ${newRoute?.settings.name}',
+    );
+  }
+}

lib/router/router.dart

@@ -48,6 +48,7 @@ import 'package:flutter_news_app_mobile_client_full_source_code/settings/view/se
 import 'package:flutter_news_app_mobile_client_full_source_code/settings/view/theme_settings_page.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/shared/services/feed_decorator_service.dart';
 import 'package:go_router/go_router.dart';
+import 'package:logging/logging.dart';
 
 /// Creates and configures the GoRouter instance for the application.
 ///
@@ -76,6 +77,7 @@ GoRouter createRouter({
   required AdService adService,
   required GlobalKey<NavigatorState> navigatorKey,
   required InlineAdCacheService inlineAdCacheService,
+  required Logger logger,
 }) {
   // Instantiate FeedDecoratorService once to be shared
   final feedDecoratorService = FeedDecoratorService(
@@ -101,7 +103,7 @@ GoRouter createRouter({
       final appStatus = context.read<AppBloc>().state.status;
       final currentLocation = state.matchedLocation;
 
-      print(
+      logger.info(
         'GoRouter Redirect Check:\n'
         '  Current Location (Matched): $currentLocation\n'
         '  AppStatus: $appStatus',
@@ -118,24 +120,24 @@ GoRouter createRouter({
       // If the user is unauthenticated, they must be on an auth path.
       // If they try to go anywhere else, they are redirected to the sign-in page.
       if (appStatus == AppLifeCycleStatus.unauthenticated) {
-        print('  Redirect: User is unauthenticated.');
+        logger.info('  Redirect: User is unauthenticated.');
         return isGoingToAuth ? null : authenticationPath;
       }
 
       // --- Case 2: Anonymous User ---
       // An anonymous user is partially authenticated. They can browse the app.
       if (appStatus == AppLifeCycleStatus.anonymous) {
-        print('  Redirect: User is anonymous.');
+        logger.info('  Redirect: User is anonymous.');
         // Block anonymous users from the main sign-in page.
         if (isGoingToAuth) {
-          print(
+          logger.info(
             '    Action: Anonymous user on auth path. Redirecting to feed.',
           );
           return feedPath;
         }
         // If at the root, send them to the feed.
         if (currentLocation == rootPath) {
-          print('    Action: User at root. Redirecting to feed.');
+          logger.info('    Action: User at root. Redirecting to feed.');
           return feedPath;
         }
         // Allow navigation to other pages, including the new linking page.
@@ -145,23 +147,23 @@ GoRouter createRouter({
       // --- Case 3: Authenticated User ---
       // A fully authenticated user should be blocked from all auth/linking pages.
       if (appStatus == AppLifeCycleStatus.authenticated) {
-        print('  Redirect: User is authenticated.');
+        logger.info('  Redirect: User is authenticated.');
         if (isGoingToAuth || isGoingToLinking) {
-          print(
+          logger.info(
             '    Action: Authenticated user on auth/linking path. Redirecting to feed.',
           );
           return feedPath;
         }
         // If at the root, send them to the feed.
         if (currentLocation == rootPath) {
-          print('    Action: User at root. Redirecting to feed.');
+          logger.info('    Action: User at root. Redirecting to feed.');
           return feedPath;
         }
       }
 
       // --- Fallback ---
       // For any other case (or if no conditions are met), allow navigation.
-      print('  Redirect: No condition met. Allowing navigation.');
+      logger.info('  Redirect: No condition met. Allowing navigation.');
       return null;
     },
     // --- Authentication Routes ---
@@ -551,8 +553,8 @@ GoRouter createRouter({
                             );
                           } else {
                             // Handle case where user is unexpectedly null.
-                            print(
-                              'ShellRoute/SettingsBloc: User ID is null when creating SettingsBloc. Settings will not be loaded.',
+                            logger.warning(
+                              'User ID is null when creating SettingsBloc. Settings will not be loaded.',
                             );
                           }
                           return settingsBloc;