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

import 'dart:async';
import 'package:bloc/bloc.dart';
import 'package:go_router/go_router.dart';
import 'package:hadi_hoda_flutter/core/params/no_params.dart';
import 'package:hadi_hoda_flutter/core/routers/my_routes.dart';
import 'package:hadi_hoda_flutter/core/utils/context_provider.dart';
import 'package:hadi_hoda_flutter/features/intro/domain/usecases/extract_data_usecase.dart';
import 'package:hadi_hoda_flutter/features/intro/domain/usecases/loading_stream_usecase.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,
      this._extractDataUseCase,
      this._loadingStreamUseCase,
      ) : super(const IntroState()) {
    on<SaveLevelsEvent>(_saveLevelsEvent);
    on<ExtractDataEvent>(_extractDataEvent);
    loadingStream = _loadingStreamUseCase();
  }

  /// ------------UseCases------------
  final SaveLevelsUseCase _saveLevelsUseCase;
  final ExtractDataUseCase _extractDataUseCase;
  final LoadingStreamUseCase _loadingStreamUseCase;

  /// ------------Variables------------
  Stream<double> loadingStream = Stream.empty();

  /// ------------Controllers------------

  /// ------------Functions------------

  /// ------------Api Calls------------
  FutureOr<void> _saveLevelsEvent(SaveLevelsEvent event,
      Emitter<IntroState> emit) async {
    await _saveLevelsUseCase(NoParams()).then(
      (value) {
        value.fold(
            (data) async {

              add(ExtractDataEvent());
            },
            (error) {},
        );
      },
    );
  }

  FutureOr<void> _extractDataEvent(ExtractDataEvent event,
      Emitter<IntroState> emit) async {
    await _extractDataUseCase(NoParams()).then(
          (value) {
            value.fold(
              (data) async {
                await Future.delayed(
                  Duration(seconds: 1), () {
                  ContextProvider.context!.goNamed(Routes.homePage);
                  },
                );
              },
              (error) {},
        );
      },
    );
  }
}