refactored landing page with initialization errors

app/lib/features/search_browser/presentation/widgets/error_container.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+
+class ErrorContainer extends StatelessWidget {
+  final Widget content;
+
+  const ErrorContainer({required this.content});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16.0),
+      decoration: BoxDecoration(
+        color: theme.colorScheme.errorContainer,
+        borderRadius: BorderRadius.circular(4.0),
+      ),
+      child: Row(
+        children: [
+          Padding(
+            padding: const EdgeInsets.all(8.0),
+            child: Icon(
+              Icons.warning,
+              size: 36,
+              color: theme.colorScheme.onErrorContainer,
+            ),
+          ),
+          Expanded(
+            child: content,
+          ),
+        ],
+      ),
+    );
+  }
+}

app/lib/features/search_browser/presentation/widgets/landing/action.dart

@@ -2,6 +2,7 @@ import 'package:bang_navigator/core/routing/routes.dart';
 import 'package:bang_navigator/features/search_browser/domain/entities/modes.dart';
 import 'package:bang_navigator/features/search_browser/domain/entities/sheet.dart';
 import 'package:bang_navigator/features/search_browser/domain/services/create_tab.dart';
+import 'package:bang_navigator/features/search_browser/presentation/widgets/error_container.dart';
 import 'package:bang_navigator/features/settings/data/repositories/settings_repository.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
@@ -13,8 +14,6 @@ class LandingAction extends HookConsumerWidget {
   const LandingAction({super.key});
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final theme = Theme.of(context);
-
     final sessionTokenAvailable = ref.watch(
       settingsRepositoryProvider.select(
         (value) => value.valueOrNull?.kagiSession?.isNotEmpty ?? false,
@@ -29,36 +28,17 @@ class LandingAction extends HookConsumerWidget {
 
     return Visibility(
       visible: sessionTokenAvailable,
-      replacement: Container(
-        margin: const EdgeInsets.symmetric(horizontal: 16.0),
-        decoration: BoxDecoration(
-          color: theme.colorScheme.errorContainer,
-          borderRadius: BorderRadius.circular(4.0),
-        ),
-        child: Row(
-          children: [
-            Padding(
-              padding: const EdgeInsets.all(8.0),
-              child: Icon(
-                Icons.warning,
-                size: 36,
-                color: theme.colorScheme.onErrorContainer,
-              ),
-            ),
-            Expanded(
-              child: Markdown(
-                shrinkWrap: true,
-                onTapLink: (text, href, title) async {
-                  if (href == 'settings') {
-                    await context.push(SettingsRoute().location);
-                  }
-                },
-                data: '## No Kagi Session Provided\n'
-                    'Please navigate to [Settings](settings) and enter your Kagi Session Token.\n'
-                    "You must provide a valid session in order to use Kagi's features.",
-              ),
-            ),
-          ],
+      replacement: ErrorContainer(
+        content: Markdown(
+          shrinkWrap: true,
+          onTapLink: (text, href, title) async {
+            if (href == 'settings') {
+              await context.push(SettingsRoute().location);
+            }
+          },
+          data: '## No Kagi Session Provided\n'
+              'Please navigate to [Settings](settings) and enter your Kagi Session Token.\n'
+              "You must provide a valid session in order to use Kagi's features.",
         ),
       ),
       child: Wrap(

app/lib/features/search_browser/presentation/widgets/landing/content.dart

@@ -1,7 +1,9 @@
+import 'package:bang_navigator/domain/services/app_initialization.dart';
+import 'package:bang_navigator/features/search_browser/presentation/widgets/error_container.dart';
 import 'package:bang_navigator/features/search_browser/presentation/widgets/landing/action.dart';
+import 'package:bang_navigator/presentation/hooks/cached_future.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart' show rootBundle;
-import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 
@@ -12,17 +14,12 @@ class LandingContent extends HookConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     final textTheme = Theme.of(context).textTheme;
 
-    // ignore: discarded_futures
-    final descriptionAssetFuture = useMemoized(
+    final descriptionAsset = useCachedFuture(
       () async => rootBundle.loadString('assets/landing/description.md'),
     );
-    final descriptionAsset = useFuture(descriptionAssetFuture);
-
-    // ignore: discarded_futures
-    final changelogAssetFuture = useMemoized(
+    final changelogAsset = useCachedFuture(
       () async => rootBundle.loadString('assets/landing/changelog.md'),
     );
-    final changelogAsset = useFuture(changelogAssetFuture);
 
     return SingleChildScrollView(
       child: Column(
@@ -42,6 +39,71 @@ class LandingContent extends HookConsumerWidget {
             child: Image.asset('assets/icon/icon.png'),
           ),
           const LandingAction(),
+          Consumer(
+            builder: (context, ref, child) {
+              final errors = ref.watch(
+                appInitializationServiceProvider
+                    .select((result) => result.valueOrNull?.errors),
+              );
+
+              if (errors == null || errors.isEmpty) {
+                return const SizedBox.shrink();
+              }
+
+              return Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  ...errors.map(
+                    (error) {
+                      final theme = Theme.of(context);
+                      return Padding(
+                        padding: const EdgeInsets.symmetric(vertical: 8.0),
+                        child: ErrorContainer(
+                          content: Column(
+                            mainAxisSize: MainAxisSize.min,
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            children: [
+                              Text(
+                                'Error during App Initialization!',
+                                style: theme.textTheme.titleMedium,
+                              ),
+                              Text(
+                                error.message,
+                                style: theme.textTheme.titleSmall,
+                              ),
+                              if (error.details != null)
+                                Text(error.details.toString()),
+                            ],
+                          ),
+                        ),
+                      );
+                    },
+                  ),
+                  const SizedBox(
+                    height: 8,
+                  ),
+                  Padding(
+                    padding: const EdgeInsets.symmetric(horizontal: 16.0),
+                    child: SizedBox(
+                      width: double.infinity,
+                      child: FilledButton.tonalIcon(
+                        onPressed: () async {
+                          await ref
+                              .read(appInitializationServiceProvider.notifier)
+                              .reinitialize();
+                        },
+                        style: OutlinedButton.styleFrom(
+                          tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                        ),
+                        label: const Text('Restart App'),
+                        icon: const Icon(Icons.refresh_outlined),
+                      ),
+                    ),
+                  ),
+                ],
+              );
+            },
+          ),
           Markdown(
             data: descriptionAsset.data ?? '',
             selectable: true,

app/lib/presentation/hooks/cached_future.dart

@@ -0,0 +1,12 @@
+import 'package:flutter/widgets.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+
+AsyncSnapshot<T> useCachedFuture<T>(
+  Future<T> Function() valueBuilder,
+) {
+  // ignore: discarded_futures
+  final cachedFuture = useMemoized(
+    valueBuilder,
+  );
+  return useFuture(cachedFuture);
+}

app/lib/presentation/widgets/failure_widget.dart

@@ -10,7 +10,7 @@ class FailureWidget extends StatelessWidget {
   });
 
   final String? title;
-  final Object? exception;
+  final dynamic exception;
   final VoidCallback? onRetry;
   final bool compact;
 
@@ -23,7 +23,10 @@ class FailureWidget extends StatelessWidget {
           ListTile(
             title: Text(title ?? 'Something went wrong'),
             subtitle: exception != null
-                ? Text(exception.runtimeType.toString())
+                ? switch (exception) {
+                    final String string => Text(string),
+                    _ => Text(exception.runtimeType.toString())
+                  }
                 : null,
             trailing: compact && onRetry != null
                 ? IconButton.outlined(