downloadAndExtract method

Future<void> downloadAndExtract(String url, { dynamic onProgress(double)?, })

Downloads a .h5p file, renames it to .zip, extracts to /final.

Implementation

Future<void> downloadAndExtract(String url,
    {Function(double)? onProgress}) async {
  final dir = await getApplicationDocumentsDirectory();
  final tempH5p = File('${dir.path}/temp.h5p');
  final tempZip = File('${dir.path}/temp.zip');
  final extractPath = '${dir.path}/base/final';

  // Download .h5p file with progress callback
  debugPrint('⬇️ Downloading H5P from $url ...');
  await _dio.download(url, tempH5p.path,
      onReceiveProgress: (received, total) {
    if (total != -1 && onProgress != null) {
      onProgress((received / total));
    }
  });

  // Rename to .zip
  if (await tempZip.exists()) await tempZip.delete();
  await tempH5p.rename(tempZip.path);

  // Extract
  debugPrint('📦 Extracting H5P ...');
  final bytes = await tempZip.readAsBytes();
  final archive = ZipDecoder().decodeBytes(bytes);

  for (final file in archive) {
    final filename = '$extractPath/${file.name}';
    if (file.isFile) {
      final outFile = File(filename)..createSync(recursive: true);
      await outFile.writeAsBytes(file.content as List<int>);
    } else {
      Directory(filename).createSync(recursive: true);
    }
  }

  debugPrint('✅ Extraction done → $extractPath');
}