Enhancement/bloc use example

.github/pull_request_template.md

@@ -9,5 +9,3 @@
 
 #### Notes:
 [extra note or considerations]
-
-@rs-gpt-review Describe the changes in this PR. Recommend improvements (including code improvements), possible memory leaks, and best practices.

app/lib/presentation/ui/custom/loading_screen.dart

@@ -1,32 +1,26 @@
 import 'package:flutter/material.dart';
 
 class LoadingScreen extends StatelessWidget {
-  final bool isLoading;
   final Color? color;
 
   const LoadingScreen({
     super.key,
-    required this.isLoading,
     this.color,
   });
 
   @override
   Widget build(BuildContext context) {
-    return Positioned.fill(
-      child: isLoading
-          ? Container(
-              color: Colors.transparent,
-              child: Center(
-                child: SizedBox(
-                  width: 24,
-                  height: 24,
-                  child: CircularProgressIndicator(
-                    color: color,
-                  ),
-                ),
-              ),
-            )
-          : const SizedBox.shrink(),
+    return Container(
+      color: Theme.of(context).colorScheme.primaryContainer.withAlpha(50),
+      child: Center(
+        child: SizedBox(
+          width: 24,
+          height: 24,
+          child: CircularProgressIndicator(
+            color: color,
+          ),
+        ),
+      ),
     );
   }
 }

app/lib/presentation/ui/pages/home/home_view.dart

@@ -1,10 +1,12 @@
 import 'package:app/main/init.dart';
-import 'package:domain/services/auth_service.dart';
+import 'package:domain/bloc/auth/auth_cubit.dart';
 import 'package:flutter/material.dart';
 import 'package:app/presentation/ui/custom/app_theme_switch.dart';
 
 class HomeView extends StatelessWidget {
-  AuthService get _authService => getIt();
+  /// Given this is a global cubit, we can access it directly from getIt
+  /// otherwise use context.read<AuthCubit>() to read the Cubit under that context
+  AuthCubit get _authCubit => getIt();
 
   const HomeView({super.key});
 
@@ -14,7 +16,7 @@ class HomeView extends StatelessWidget {
       appBar: AppBar(
         actions: [
           IconButton(
-            onPressed: () => _authService.onLogout(),
+            onPressed: () => _authCubit.logOut(),
             icon: const Icon(Icons.logout),
           ),
           const AppThemeSwitch(),

app/lib/presentation/ui/pages/login/login_page.dart

@@ -5,26 +5,23 @@ import 'package:app/presentation/ui/custom/app_theme_switch.dart';
 import 'package:app/presentation/ui/custom/loading_screen.dart';
 import 'package:common/core/resource.dart';
 import 'package:domain/bloc/auth/auth_cubit.dart';
-import 'package:domain/services/auth_service.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../../custom/environment_selector.dart';
 
 class LoginPage extends StatelessWidget {
-  AuthService get _authService => getIt();
-
   const LoginPage({super.key});
 
+  AuthCubit get _authCubit => getIt();
+
   @override
   Widget build(BuildContext context) {
-    return Stack(
-      children: [
-        Scaffold(
-          appBar: AppBar(),
-          backgroundColor: context.theme.colorScheme.surface,
-          body: Padding(
+    return Scaffold(
+      body: Stack(
+        children: [
+          Padding(
             padding: EdgeInsets.all(spacing.m),
             child: Column(
               mainAxisAlignment: MainAxisAlignment.center,
@@ -36,7 +33,7 @@ class LoginPage extends StatelessWidget {
                   child: ElevatedButton(
                     child: const Text('Login'),
                     onPressed: () {
-                      _authService.logInWithCredentials(
+                      _authCubit.login(
                         'Rootstrap',
                         '12345678',
                       );
@@ -50,9 +47,9 @@ class LoginPage extends StatelessWidget {
               ],
             ),
           ),
-        ),
-        const _Loading(),
-      ],
+          const _Loading(),
+        ],
+      ),
     );
   }
 }
@@ -64,8 +61,15 @@ class _Loading extends StatelessWidget {
   Widget build(BuildContext context) {
     return BlocBuilder<AuthCubit, Resource>(
       builder: (context, state) {
-        return LoadingScreen(
-          isLoading: state is RLoading,
+        if (state is! RLoading) {
+          return const SizedBox.shrink();
+        }
+
+        return Container(
+          color: Colors.black.withAlpha(50),
+          width: double.maxFinite,
+          height: double.maxFinite,
+          child: const LoadingScreen(),
         );
       },
     );

app/lib/presentation/ui/pages/splash/splash_page.dart

@@ -1,5 +1,5 @@
 import 'package:app/main/init.dart';
-import 'package:domain/services/auth_service.dart';
+import 'package:domain/bloc/auth/auth_cubit.dart';
 import 'package:flutter/material.dart';
 
 class SplashPage extends StatefulWidget {
@@ -10,12 +10,19 @@ class SplashPage extends StatefulWidget {
 }
 
 class _SplashPageState extends State<SplashPage> {
-  AuthService get _authService => getIt();
+  /// Given this is a global cubit, we can access it directly from getIt
+  /// otherwise use context.read<AuthCubit>() to read the Cubit under that context
+  AuthCubit get _authCubit => getIt();
 
   @override
   void initState() {
     super.initState();
-    _authService.onValidate();
+
+    /// Add post frame callback to avoid calling bloc methods during build
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      await Future.delayed(const Duration(seconds: 1));
+      _authCubit.onValidate();
+    });
   }
 
   @override

melos.yaml

@@ -5,6 +5,10 @@ packages:
   - modules/*
 
 scripts:
+  run:web:
+    description: Run the app in development mode for web.
+    run: melos exec --scope="app" -- \
+      flutter run -t lib/main.dart --dart-define-from-file=env/.dev -d chrome
   lint:all:
     run: melos run analyze && melos run format
     description: Run all static analysis checks.
@@ -38,4 +42,4 @@ scripts:
     description: Run `dart doctor` in selected or all packages. Includes prompt for packages.
     packageFilters:
       dirExists:
-        - lib
+        - lib

modules/domain/lib/bloc/auth/auth_cubit.dart

@@ -1,9 +1,35 @@
 import 'package:common/core/resource.dart';
+import 'package:common/core/result_type.dart';
 import 'package:domain/bloc/base_cubit.dart';
 import 'package:domain/bloc/auth/auth_state.dart';
+import 'package:domain/services/auth_service.dart';
 
 class AuthCubit extends BaseCubit<AuthState> {
-  AuthCubit() : super(RSuccess(data: AuthStateUnknown()));
+  final AuthService _authService;
+  AuthCubit(this._authService) : super(RSuccess(data: AuthStateUnknown()));
+
+  Future<void> login(String username, String password) async {
+    isLoading();
+    final authResult =
+        await _authService.logInWithCredentials(username, password);
+
+    authResult
+      ..mapSuccess((_) => isLogin())
+      ..mapError((failure) => isError(failure));
+  }
+
+  Future<void> onValidate() async {
+    if (_authService.isLoggedIn()) {
+      isLogin();
+    } else {
+      isLogOut();
+    }
+  }
+
+  Future<void> logOut() async {
+    await _authService.onLogout();
+    isLogOut();
+  }
 
   void isLogin() => isSuccess(AuthStateAuthenticated());
 

modules/domain/lib/init.dart

@@ -5,11 +5,11 @@ import 'package:get_it/get_it.dart';
 
 class DomainInit {
   static Future<void> initialize(GetIt getIt) async {
-    //Cubits
-    getIt.registerSingleton(AppCubit(getIt()));
-    getIt.registerSingleton(AuthCubit());
-
     //Services
-    getIt.registerLazySingleton(() => AuthService(getIt(), getIt()));
+    getIt.registerLazySingleton(() => AuthService(getIt()));
+
+    //Global Cubits
+    getIt.registerSingleton(AppCubit(getIt()));
+    getIt.registerSingleton(AuthCubit(getIt()));
   }
 }

modules/domain/lib/services/auth_service.dart

@@ -1,34 +1,18 @@
 import 'package:common/core/result_type.dart';
-import 'package:domain/bloc/auth/auth_cubit.dart';
 import 'package:domain/repositories/auth_repository.dart';
 
 class AuthService {
   final AuthRepository _authRepository;
-  final AuthCubit _sessionCubit;
 
-  AuthService(this._authRepository, this._sessionCubit);
+  AuthService(this._authRepository);
 
-  Future<void> logInWithCredentials(String username, String password) async {
-    _sessionCubit.isLoading();
-    final result = await _authRepository.login(username, password);
-    switch (result) {
-      case TSuccess<void> _:
-        _sessionCubit.isLogin();
-      case TError<void> _:
-        _sessionCubit.isError(result.error);
-    }
-  }
+  Future<ResultType<void>> logInWithCredentials(
+          String username, String password) =>
+      _authRepository.login(username, password);
 
-  void onValidate() {
-    if (_authRepository.isLoggedIn()) {
-      _sessionCubit.isLogin();
-    } else {
-      _sessionCubit.isLogOut();
-    }
-  }
+  bool isLoggedIn() => _authRepository.isLoggedIn();
 
   Future<void> onLogout() async {
     await _authRepository.logout();
-    _sessionCubit.isLogOut();
   }
 }