Automatic export of Calibre library possible?

My Calibre library is placed in a Google Drive.

The issue I face with any Android reader: if there is a (rare) possibility to connect a cloud, reader newertheless can't read books from Calibre library placed in the cloud - because Calibre library has a nested structure and no reader can add book files from nested folders.

Is there any possibility to export flatten version of the Calibre library automatically, after a library status was changed (book added, book deleted) or scheduled?

Or, asked differently: how do you deal with this issue?