Calibre epub notes intergration via calibredb

[sati-bodhi]

This may be beyond the scope of the current project, but I see a lot of potential - as far as epub-reader support is concerned.

The issue is this: before my discovery of org-remark, I add highlights to my epub library primarily through Calibre's E-book Viewer. These are not easily accessible for consolidation in org-noter at present.

Again, pdfs are "more equal" than epubs in this case because org-noter has a create-skeleton function that can extract annotations out from the pdfs through pdf-tools. org-remark can now serve as an annotating device with nov; but notes previously taken in Calibre remain out of reach.

Annotations for a single Calibre Library are collectively stored in metadata.db, which can be accessed with sqlite3.

Here's the fun part: the calibredb.el project has already built up a whole ecosystem to access and process data stored in that database from Emacs.

This means, with a little bit of effort, we might just be able to integrate the two systems together to build an epub note-taking system on Emacs which is at least as good as the present pdf support.

Notes taken in Calibre can be imported into org-remark and accessed with nov; vice-versa. How cool would that be.

This also fits nicely with your intuition of having a separate module for epub support and integration.

Originally posted by @sati-bodhi in https://github.com/nobiot/org-remark/issues/54#issuecomment-1377404122