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

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

import 'package:flutter_archive/flutter_archive.dart';
import 'package:hadi_hoda_flutter/core/constants/my_api.dart';
import 'package:hadi_hoda_flutter/core/constants/my_constants.dart';
import 'package:hadi_hoda_flutter/core/error_handler/my_exception.dart';
import 'package:hadi_hoda_flutter/core/network/http_request.dart';
import 'package:hadi_hoda_flutter/core/response/base_response.dart';
import 'package:hadi_hoda_flutter/core/utils/local_storage.dart';
import 'package:hadi_hoda_flutter/core/utils/storage_path.dart';
import 'package:hadi_hoda_flutter/features/intro/domain/entities/download_entity.dart';
import 'package:hadi_hoda_flutter/features/level/data/model/level_model.dart';
import 'package:hadi_hoda_flutter/features/level/domain/entity/level_entity.dart';
import 'package:hadi_hoda_flutter/features/level/domain/entity/total_data_entity.dart';
import 'package:hive/hive.dart';

abstract class IIntroDatasource {
  Future<void> getFiles();
  Future<void> saveLevels();
  Stream<DownloadEntity> loadingStream();
}

class IntroDatasourceImpl implements IIntroDatasource {
  final IHttpRequest httpRequest;
  final StreamController<DownloadEntity> streamController = StreamController<DownloadEntity>.broadcast();

  IntroDatasourceImpl(this.httpRequest);

  @override
  Future<void> getFiles() async {
    final String filePath = '${StoragePath.documentDir.path}/files.zip';
    final String selectedLanguage =
        LocalStorage.readData(key: MyConstants.selectLanguage).isEmpty
        ? 'fa'
        : LocalStorage.readData(key: MyConstants.selectLanguage);

    if (LocalStorage.readData(key: MyConstants.downloadCompleted) != 'true') {
      await httpRequest.download(
        urlPath: MyApi.files,
        savePath: filePath,
        queryParameters: {
          'lang': selectedLanguage,
        },
        onReceive: (count, total) {
          streamController.add(DownloadEntity(
            count: count / 1,
            total: total / 1,
            percent: (count / total) * 100,
          ));
        },
      ).then((value) async {
        await LocalStorage.saveData(
          key: MyConstants.downloadCompleted,
          value: 'true',
        );
      });
    }

    try{
      if (LocalStorage.readData(key: MyConstants.extractCompleted) != 'true') {
        final File file = File(filePath);
        final Directory directory = Directory('${StoragePath.documentDir.path}/$selectedLanguage/files/');
        await ZipFile.extractToDirectory(
          zipFile: file,
          destinationDir: directory,
          onExtracting: (zipEntry, progress) {
            return ZipFileOperation.includeItem;
          },
        ).then((value) async {
          await Future.wait([
            LocalStorage.saveData(
              key: MyConstants.extractCompleted,
              value: 'true',
            ),
            file.delete(recursive: true),
          ]);
        });
      } else {
        streamController.add(DownloadEntity(percent: 50));
        await Future.delayed(Duration(milliseconds: 150));
        streamController.add(DownloadEntity(percent: 100));
      }
    } catch (e){
      throw MyException(errorMessage: '$e');
    }
  }

  @override
  Future<void> saveLevels() async {
    final String selectedLanguage =
    LocalStorage.readData(key: MyConstants.selectLanguage).isEmpty
        ? 'fa'
        : LocalStorage.readData(key: MyConstants.selectLanguage);
    final Box<TotalDataEntity> data = Hive.box(MyConstants.levelBox);
    final TotalDataEntity findData = data.values.singleWhere(
          (e) => e.code == selectedLanguage,
      orElse: () => TotalDataEntity(),
    );

    if (findData.code != selectedLanguage) {
      final response = await httpRequest.get(
        path: MyApi.levels,
        queryParameters: {'lang': selectedLanguage},
      );
      final List<LevelEntity> levels = BaseResponse.getDataList<LevelEntity>(
        response?['result'],
            (json) => LevelModel.fromJson(json),
      );
      await Future.wait([
        data.add(TotalDataEntity(code: selectedLanguage, levels: levels)),
      ]);
    }
  }

  @override
  Stream<DownloadEntity> loadingStream() => streamController.stream;
}