Print photos / photo book

I feel it would be a great idea, to have Nextcloud/Gallery link to one or more providers for photo printing or printing of photo books.
That way, I could give my parents (read: anyone anting printed out photos :-)) access to all photos and they could select the ones to print directly from nextcloud and send it up to the print company

Is this a possible task? Or mission impossible?
I think we would need some API on the providers site?