add: intro feature

lib/core/params/no_params.dart

@@ -0,0 +1 @@
+class NoParams {}

lib/core/routers/my_routes.dart

@@ -3,6 +3,8 @@ import 'package:go_router/go_router.dart';
 import 'package:hadi_hoda_flutter/core/utils/context_provider.dart';
 import 'package:hadi_hoda_flutter/features/home/presentation/bloc/home_bloc.dart';
 import 'package:hadi_hoda_flutter/features/home/presentation/ui/home_page.dart';
+import 'package:hadi_hoda_flutter/features/intro/presentation/bloc/intro_bloc.dart';
+import 'package:hadi_hoda_flutter/features/intro/presentation/ui/intro_page.dart';
 import 'package:hadi_hoda_flutter/features/level/presentation/bloc/level_bloc.dart';
 import 'package:hadi_hoda_flutter/features/level/presentation/bloc/level_event.dart';
 import 'package:hadi_hoda_flutter/features/level/presentation/ui/level_page.dart';
@@ -15,15 +17,24 @@ class Routes {
   const Routes._internal();
   factory Routes() => _i;
 
+  static const String introPage = '/intro_page';
   static const String homePage = '/home_page';
   static const String questionPage = '/question_page';
   static const String levelPage = '/level_page';
 }
 
 GoRouter get appPages => GoRouter(
-  initialLocation: Routes.homePage,
+  initialLocation: Routes.introPage,
   navigatorKey: ContextProvider.navigatorKey,
   routes: [
+    GoRoute(
+      name: Routes.introPage,
+      path: Routes.introPage,
+      builder: (context, state) => BlocProvider(
+        create: (context) => IntroBloc(locator()),
+        child: const IntroPage(),
+      ),
+    ),
     GoRoute(
       name: Routes.homePage,
       path: Routes.homePage,

lib/features/intro/data/datasource/intro_datasource.dart

@@ -0,0 +1,14 @@
+import 'package:hadi_hoda_flutter/core/network/http_request.dart';
+
+abstract class IIntroDatasource {
+  Future<void> saveLevels();
+}
+
+class IntroDatasourceImpl implements IIntroDatasource {
+  final IHttpRequest httpRequest;
+
+  const IntroDatasourceImpl(this.httpRequest);
+
+  @override
+  Future<void> saveLevels() async {}
+}

lib/features/intro/data/repository_impl/intro_repository_impl.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/foundation.dart';
+import 'package:hadi_hoda_flutter/core/error_handler/my_exception.dart';
+import 'package:hadi_hoda_flutter/core/params/no_params.dart';
+import 'package:hadi_hoda_flutter/core/utils/data_state.dart';
+import 'package:hadi_hoda_flutter/features/intro/data/datasource/intro_datasource.dart';
+import 'package:hadi_hoda_flutter/features/intro/domain/repository/intro_repository.dart';
+
+class IntroRepositoryImpl implements IIntroRepository {
+  final IIntroDatasource datasource;
+
+  const IntroRepositoryImpl(this.datasource);
+
+  @override
+  Future<DataState<NoParams, MyException>> saveLevels() async {
+    try {
+      await datasource.saveLevels();
+      return DataState.success(NoParams());
+    } on MyException catch (e) {
+      return DataState.error(e);
+    } catch (e) {
+      if (kDebugMode) {
+        rethrow;
+      } else {
+        return DataState.error(MyException(errorMessage: '$e'));
+      }
+    }
+  }
+}

lib/features/intro/domain/repository/intro_repository.dart

@@ -0,0 +1,7 @@
+import 'package:hadi_hoda_flutter/core/error_handler/my_exception.dart';
+import 'package:hadi_hoda_flutter/core/params/no_params.dart';
+import 'package:hadi_hoda_flutter/core/utils/data_state.dart';
+
+abstract class IIntroRepository {
+  Future<DataState<NoParams, MyException>> saveLevels();
+}

lib/features/intro/domain/usecases/save_levels_usecase.dart

@@ -0,0 +1,16 @@
+import 'package:hadi_hoda_flutter/core/error_handler/my_exception.dart';
+import 'package:hadi_hoda_flutter/core/params/no_params.dart';
+import 'package:hadi_hoda_flutter/core/usecase/usecase.dart';
+import 'package:hadi_hoda_flutter/core/utils/data_state.dart';
+import 'package:hadi_hoda_flutter/features/intro/domain/repository/intro_repository.dart';
+
+class SaveLevelsUseCase implements UseCase<NoParams, NoParams> {
+  final IIntroRepository repository;
+
+  const SaveLevelsUseCase(this.repository);
+
+  @override
+  Future<DataState<NoParams, MyException>> call(NoParams params) {
+    return repository.saveLevels();
+  }
+}

lib/features/intro/presentation/bloc/intro_bloc.dart

@@ -0,0 +1,37 @@
+import 'dart:async';
+import 'package:bloc/bloc.dart';
+import 'package:hadi_hoda_flutter/core/params/no_params.dart';
+import 'package:hadi_hoda_flutter/features/intro/domain/usecases/save_levels_usecase.dart';
+import 'package:hadi_hoda_flutter/features/intro/presentation/bloc/intro_event.dart';
+import 'package:hadi_hoda_flutter/features/intro/presentation/bloc/intro_state.dart';
+
+class IntroBloc extends Bloc<IntroEvent, IntroState> {
+  /// ------------constructor------------
+  IntroBloc(
+      this._saveLevelsUseCase,
+      ) : super(const IntroState()) {
+    on<SaveLevelsEvent>(_saveLevelsEvent);
+  }
+
+  /// ------------UseCases------------
+  final SaveLevelsUseCase _saveLevelsUseCase;
+
+  /// ------------Variables------------
+
+  /// ------------Controllers------------
+
+  /// ------------Functions------------
+
+  /// ------------Api Calls------------
+  FutureOr<void> _saveLevelsEvent(SaveLevelsEvent event,
+      Emitter<IntroState> emit) async {
+    await _saveLevelsUseCase(NoParams()).then(
+      (value) {
+        value.fold(
+            (data) {},
+            (error) {},
+        );
+      },
+    );
+  }
+}

lib/features/intro/presentation/bloc/intro_event.dart

@@ -0,0 +1,5 @@
+sealed class IntroEvent {
+  const IntroEvent();
+}
+
+class SaveLevelsEvent extends IntroEvent {}

lib/features/intro/presentation/bloc/intro_state.dart

@@ -0,0 +1,15 @@
+import 'package:hadi_hoda_flutter/core/status/base_status.dart';
+
+class IntroState {
+  final BaseStatus getIntroStatus;
+
+  const IntroState({this.getIntroStatus = const BaseInit()});
+
+  IntroState copyWith({
+    BaseStatus? getIntroStatus,
+  }) {
+    return IntroState(
+      getIntroStatus: getIntroStatus ?? this.getIntroStatus,
+    );
+  }
+}

lib/features/intro/presentation/ui/intro_page.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+
+class IntroPage extends StatelessWidget {
+  const IntroPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Scaffold();
+  }
+}