Error handling - chapter pages not in the database

[lb803]

If chapter pages are not defined in the DB (i.e. data is incomplete), python throws a puzzling/not helpful error at this line:

chapter-splitter/src/main.py

Line 32 in cc782f6

page_range = re.split('-|–', chapter.get("pages"))

My take is to turn the Chapter class attribute pages into a list, store page range there and format it correctly when the object is first created (so this is done at api level and the "user" doesn't need to worry about it i.e. in the main.py file). If page data is not present then, throws an error with a nice message.

[rhigman]

For Thoth, we're getting pageInterval in get_chapters() and then splitting it up into first-page/last-page here - we could just be getting firstPage and lastPage instead. (We'd need to bring the Crossref version into line with it, roughly as described above, but we're not really using that version any more anyway.)