A PY script to make "shelves" from folders?

How hard would it be to write a script to allow the user to select a folder full
of ebooks and have a shelf made (with the same name as the folder) that
contained all the ebooks in the folder?

Say I had a folder labeled "Fantasy" that was full of ebooks/files named by
author - title.

And another folder labeled "PolyTicks", and another labeled "Action" and
another .... all with ebooks/files named like above.

Could the files in the folder be added to the Kobo kluge of files and the
"Shelves" made, in the same process?

Could it be that if you had a Folder/Directory of such folders, the script be
made so that the user can select which of those folders would processed.

If it could be done, it would make things a lot simpler for those of us who
are used to ereaders that manage ebooks as files in the computer style
folder structure.

Luck;
Ken