Now that I have the ISBN2node module code working, I would like to extend it, maybe in a custom module. What I want to do is to "connect" it to an existing content type instead of having its own custom content type.
So I want to make a form that allows the user to choose a content type and then map fields from the book record (e.g. title, author, publication date, etc) over to fields in my content type.
What are the functions I need to look into, to let me do this?
I could of course just hard code all this into a custom module but it would be nice both for flexibility and for visibility from the UI to configure it with a form. If it's not too hard, that is. :)