Future<File> moveFile(File sourceFile, String newPath) async {
  try {
    // prefer using rename as it is probably faster
    return await sourceFile.rename(newPath);
  } on FileSystemException catch (e) {
    // if rename fails, copy the source file and then delete it
    final newFile = await sourceFile.copy(newPath);
    await sourceFile.delete();
    return newFile;
  }
}