refactor: upgrade to dart3 (#21)

* chore: upgrade sdk and packages

* fix: address lint warnings

* fix: bootstrap app

* fix: preload images

* chore: rename `data_providers` to `api_client`

* chore: rename `shared` to `app_core`

* chore: rename `ui_toolkit` to `app_ui`

* refactor: use patterns

* ci: fix format

* refactor: remove interfaces

Author: x1z7

.github/workflows/main.yaml

@@ -14,7 +14,7 @@ jobs:
         run: flutter packages get
 
       - name: Format
-        run: flutter format --set-exit-if-changed lib test
+        run: dart format --set-exit-if-changed lib test
 
       - name: Analyze
         run: flutter analyze lib test

android/build.gradle

@@ -25,6 +25,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }

ios/Podfile

@@ -4,7 +4,7 @@ $FirebaseSDKVersion = '8.3.0'
 
 require 'yaml'
 
-pubspec = YAML.load_file(File.join('..', 'packages/data_providers/pubspec.yaml'))
+pubspec = YAML.load_file(File.join('..', 'packages/api_client/pubspec.yaml'))
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

lib/about/view/about_view.dart

@@ -1,6 +1,6 @@
+import 'package:app_ui/app_ui.dart';
 import 'package:flutter/material.dart';
 import 'package:quizapp/l10n/l10n.dart';
-import 'package:ui_toolkit/ui_toolkit.dart';
 
 class AboutView extends StatelessWidget {
   const AboutView({super.key});

lib/app/app_bloc_observer.dart

@@ -1,6 +1,6 @@
 import 'dart:developer';
 
-import 'package:shared/shared.dart';
+import 'package:app_core/app_core.dart';
 
 class AppBlocObserver extends BlocObserver {
   @override

lib/app/app_bootstrap.dart

@@ -1,37 +1,48 @@
-import 'dart:async';
 import 'dart:developer';
+import 'dart:isolate';
 
-import 'package:data_providers/data_providers.dart';
+import 'package:app_core/app_core.dart';
+import 'package:app_ui/app_ui.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
-import 'package:shared/shared.dart';
-import 'package:ui_toolkit/ui_toolkit.dart';
+import 'package:quizapp/app/app_bloc_observer.dart';
 
-Future<void> bootstrap(
-  FutureOr<Widget> Function() appDelegate, {
-  void Function(Object, StackTrace)? onZoneError,
-  FlutterExceptionHandler? onFlutterError,
-  BlocObserver? blocObserver,
-  Future<FirebaseApp> Function()? firebaseApp,
+Future<void> bootstrap({
+  required FutureOr<Widget> Function() builder,
+  FutureOr<void> Function()? init,
 }) async {
-  WidgetsFlutterBinding.ensureInitialized();
+  await runZonedGuarded(
+    () async {
+      BindingBase.debugZoneErrorsAreFatal = true;
+      WidgetsFlutterBinding.ensureInitialized();
+      await init?.call();
 
-  FlutterError.onError = onFlutterError ??
-      (details) {
+      FlutterError.onError = (details) {
         log(details.exceptionAsString(), stackTrace: details.stack);
       };
+      PlatformDispatcher.instance.onError = (error, stackTrace) {
+        log(error.toString(), stackTrace: stackTrace);
+        return true;
+      };
+      Isolate.current.addErrorListener(
+        RawReceivePort((dynamic pair) async {
+          final errorAndStackTrace = pair as List<dynamic>;
+          final error = errorAndStackTrace.first;
+          final rawStackTrace = errorAndStackTrace.last;
+          final stackTrace = rawStackTrace is StackTrace
+              ? rawStackTrace
+              : StackTrace.fromString(rawStackTrace.toString());
+          log(error.toString(), stackTrace: stackTrace);
+        }).sendPort,
+      );
 
-  await (firebaseApp ?? Firebase.initializeApp)();
-
-  await Assets.covers.preload();
+      Bloc.observer = AppBlocObserver();
 
-  if (blocObserver != null) {
-    Bloc.observer = blocObserver;
-  }
+      await Assets.covers.preload();
 
-  return runZonedGuarded<void>(
-    () async => runApp(await appDelegate()),
-    onZoneError ??
-        (error, stackTrace) => log(error.toString(), stackTrace: stackTrace),
+      final app = await builder();
+      runApp(app);
+    },
+    (error, stackTrace) => log(error.toString(), stackTrace: stackTrace),
   );
 }

lib/app/cubit/app_cubit.dart

@@ -1,6 +1,4 @@
-import 'dart:async';
-
-import 'package:shared/shared.dart';
+import 'package:app_core/app_core.dart';
 import 'package:user_repository/user_repository.dart';
 
 part 'app_state.dart';

lib/app/cubit/app_state.dart

@@ -14,7 +14,7 @@ extension AppStatusExtensions on AppStatus {
   bool get isFailure => this == AppStatus.failure;
 }
 
-class AppState extends Equatable {
+final class AppState extends Equatable {
   const AppState._({
     required this.status,
     this.user = User.none,

lib/app/view/app.dart

@@ -1,3 +1,4 @@
+import 'package:app_ui/app_ui.dart';
 import 'package:flow_builder/flow_builder.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -6,12 +7,11 @@ import 'package:quizapp/app/cubit/app_cubit.dart';
 import 'package:quizapp/home/home.dart';
 import 'package:quizapp/l10n/l10n.dart';
 import 'package:quizapp/login/login.dart';
-import 'package:ui_toolkit/ui_toolkit.dart';
 import 'package:user_repository/user_repository.dart';
 
-List<Page<void>> onGenerateAppPages(
+List<Page<dynamic>> onGenerateAppPages(
   AppStatus status,
-  List<Page<void>> pages,
+  List<Page<dynamic>> pages,
 ) {
   if (status.isUnauthenticated) {
     return [LoginPage.page()];
@@ -24,8 +24,8 @@ List<Page<void>> onGenerateAppPages(
 
 class App extends StatelessWidget {
   const App({
-    super.key,
     required this.userRepository,
+    super.key,
   });
 
   final UserRepository userRepository;
@@ -56,18 +56,16 @@ class AppView extends StatelessWidget {
       ],
       supportedLocales: AppLocalizations.supportedLocales,
       home: BlocListener<AppCubit, AppState>(
+        listenWhen: (_, current) => current.isFailure,
         listener: (context, state) {
-          if (state.isFailure) {
-            final failure = state.failure;
-            final l10n = context.l10n;
-            if (failure is AuthUserChangesFailure) {
-              context.showSnackBar(l10n.authFailureMessage);
-            } else if (failure is SignOutFailure) {
-              context.showSnackBar(l10n.signOutFailureMessage);
-            } else {
-              context.showSnackBar(l10n.unknownFailureMessage);
-            }
-          }
+          final l10n = context.l10n;
+          return switch (state.failure) {
+            AuthUserChangesFailure() =>
+              context.showSnackBar(l10n.authFailureMessage),
+            SignOutFailure() =>
+              context.showSnackBar(l10n.signOutFailureMessage),
+            _ => context.showSnackBar(l10n.unknownFailureMessage),
+          };
         },
         child: FlowBuilder(
           onGeneratePages: onGenerateAppPages,

lib/home/view/bottom_nav_bar.dart

@@ -1,15 +1,15 @@
+import 'package:app_core/app_core.dart';
+import 'package:app_ui/app_ui.dart';
 import 'package:flutter/material.dart';
 import 'package:quizapp/l10n/l10n.dart';
-import 'package:shared/shared.dart';
-import 'package:ui_toolkit/ui_toolkit.dart';
 
 enum NavBarItem { topics, about, profile }
 
 extension NavBarItemExtensions on NavBarItem {
   bool get isTopics => this == NavBarItem.topics;
 }
 
-class NavBarController extends PageController {
+final class NavBarController extends PageController {
   NavBarController({NavBarItem initialItem = NavBarItem.topics})
       : _notifier = ValueNotifier<NavBarItem>(initialItem),
         super(initialPage: initialItem.index) {