import 'dart:async';

import 'package:bloc/bloc.dart';
import 'package:flutter/cupertino.dart';
import 'package:go_router/go_router.dart';
import 'package:hadi_hoda_flutter/core/constants/my_constants.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/core/utils/local_storage.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';
import 'package:hadi_hoda_flutter/features/intro/presentation/ui/screens/intro_1_screen.dart';
import 'package:hadi_hoda_flutter/features/intro/presentation/ui/screens/intro_2_screen.dart';
import 'package:hadi_hoda_flutter/features/intro/presentation/ui/screens/intro_3_screen.dart';
import 'package:hadi_hoda_flutter/features/intro/presentation/ui/screens/intro_4_screen.dart';
import 'package:hadi_hoda_flutter/features/intro/presentation/ui/screens/intro_5_screen.dart';

class IntroBloc extends Bloc<IntroEvent, IntroState> {
  /// ------------constructor------------
  IntroBloc() : super(const IntroState()){
    on<ChangeIntroEvent>(_changeIntroEvent);
  }

  /// ------------UseCases------------

  /// ------------Variables------------
  final List<Widget> intros = [
    Intro1Screen(key: Key('0')),
    Intro2Screen(key: Key('1')),
    Intro3Screen(key: Key('2')),
    Intro4Screen(key: Key('3')),
    Intro5Screen(key: Key('4')),
  ];

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

  /// ------------Functions------------
  Future<void> goToLevelPage() async {
    await LocalStorage.saveData(key: MyConstants.firstIntro, value: 'true');
    if (ContextProvider.context.mounted) {
      ContextProvider.context.replaceNamed(Routes.levelPage);
    }
  }

  /// ------------Api Calls------------
  FutureOr<void> _changeIntroEvent(ChangeIntroEvent event, Emitter emit) async {
    if (state.currentIntro < intros.length - 1) {
      emit(state.copyWith(currentIntro: state.currentIntro + 1));
    } else {
      goToLevelPage();
    }
  }
}