revanced-manager/lib/backend/api/manager_api.dart

import 'dart:io';
import 'package:dio/dio.dart';
import 'package:path_provider/path_provider.dart' as p;
import 'package:revanced_manager_flutter/constants.dart';
import 'github_api.dart';

// use path_provider to get the path of the storage directory
Dio dio = Dio();
GithubAPI githubAPI = GithubAPI();

Future<String?> getPath() async {
  final path = await p.getApplicationSupportDirectory();
  final workDir = Directory('${path.path}/revanced').createSync();
  final workDirPath = "${path.path}/revanced";
  return workDirPath;
}

Future<File?> downloadAssets(String repo) async {
  try {
    final workDir = await getPath();
    final dlUrl = await githubAPI.latestRelease(ghOrg, repo);
    final name =
        dlUrl?.split('/').lastWhere((element) => element.contains('revanced'));
    print(name);
    final assetFile = File('$workDir/$name');
    final response = await dio.get(
      dlUrl!,
      options: Options(
        responseType: ResponseType.bytes,
        followRedirects: true,
        receiveTimeout: 0,
      ),
      onReceiveProgress: (count, total) {
        print('$count/$total');
      },
    );
    final raf = assetFile.openSync(mode: FileMode.write);
    raf.writeFromSync(response.data);
    raf.closeSync();
    return assetFile;
  } catch (e) {
    print(e);
    return null;
  }
}