hade_hoda_flutter/lib/features/home/presentation/bloc/home_bloc.dart

import 'dart:async';
import 'dart:io';

import 'package:bloc/bloc.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:go_router/go_router.dart';
import 'package:hadi_hoda_flutter/common_ui/resources/my_audios.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/services/audio_service.dart';
import 'package:hadi_hoda_flutter/core/utils/local_storage.dart';
import 'package:hadi_hoda_flutter/core/utils/my_context.dart';
import 'package:hadi_hoda_flutter/core/utils/storage_path.dart';
import 'package:hadi_hoda_flutter/core/widgets/dialog/about_us_dialog.dart';
import 'package:hadi_hoda_flutter/features/download/domain/entities/download_entity.dart';
import 'package:hadi_hoda_flutter/features/download/domain/usecases/get_last_downloaded_level.dart';
import 'package:hadi_hoda_flutter/features/home/presentation/bloc/home_event.dart';
import 'package:hadi_hoda_flutter/features/home/presentation/bloc/home_state.dart';

import '../../../../core/params/no_params.dart';

class HomeBloc extends Bloc<HomeEvent, HomeState> {
  /// ------------constructor------------
  HomeBloc(this._mainAudioService, this._effectAudioService, this._getLastDownloadedLevel)
    : super(const HomeState()) {
    volumeStream = _mainAudioService.volumeStream();
    playMusic();
    preCacheQuestionGifs();
    preCacheAnswerGifs();
    on<GetHomeEvent>(_getHomeEvent);
  }

  /// ------------UseCases------------
  final GetLastDownloadedLevel _getLastDownloadedLevel;
  /// ------------Variables------------
  late final Stream<double> volumeStream;

  /// ------------Controllers------------
  final AudioService _mainAudioService;
  final AudioService _effectAudioService;

  /// ------------Functions------------
  void goToLevelPage(BuildContext context) async {
    final lastDownloadedLevel =
        (await _getLastDownloadedLevel(NoParams())).data ?? 0;
    final hasFirstDownload = MyConstants.firstDownloadBatchCount <= lastDownloadedLevel;

    if(!context.mounted) return;

    if (hasFirstDownload) {
      context.goNamed(Routes.levelPage);
    } else {
      context.goNamed(
        Routes.downloadPage,
        extra: const DownloadPageConfig(
          downloadToLevel: MyConstants.firstDownloadBatchCount,
          redirectTo: Routes.homePage
        ),
      );
    }
  }

  Future<int> getLastDownloadedLevel() async {
    final result = await _getLastDownloadedLevel(NoParams());
    return result.data ?? 0;
  }

  void goToLanguagePage(BuildContext context) {
    context.pushNamed(Routes.languagePage);
  }

  void showAboutUs(BuildContext context) {
    showAboutUsDialog(context: context);
  }

  Future<void> changeMute() async {
    await Future.wait([
      _mainAudioService.changeMute(),
      _effectAudioService.changeMute(),
    ]);
  }

  Future<void> playMusic() async {
    await Future.wait([
      _mainAudioService.setAudio(assetPath: MyAudios.home),
      _mainAudioService.setLoopMode(isLoop: true),
    ]);
    await _mainAudioService.play();
  }

  Future<void> preCacheQuestionGifs() async {
    try {
      final Directory directory = Directory(
        '${StoragePath.documentDir}/question_image',
      );
      final List<FileSystemEntity> files = directory.listSync();
      await Future.wait(
        files.map(
          (file) => precacheImage(FileImage(File(file.path)), MyContext.get),
        ),
      );
    } catch (e) {
      if (kDebugMode) {
        print('$e');
      }
    }
  }

  Future<void> preCacheAnswerGifs() async {
    try {
      final Directory directory = Directory(
        '${StoragePath.documentDir}/answer_image',
      );
      final List<FileSystemEntity> files = directory.listSync();
      await Future.wait(
        files.map(
          (file) => precacheImage(FileImage(File(file.path)), MyContext.get),
        ),
      );
    } catch (e) {
      if (kDebugMode) {
        print('$e');
      }
    }
  }

  /// ------------Api Calls------------
  FutureOr<void> _getHomeEvent(event, emit) async {}
}