utils/ mainly contains scripts for generating app/src/data/books.json file from README.md
Generating app/src/data/books.json
The website shows name of the book, year, rating, cover, amazon link, etc in book card. Some of the data like name, year, rating etc is present in the main README.md. Other details like cover photo, amazon link etc is fetched from various APIs.
The script that fetches all these extra data lives in utils/update_json_files.py (utils is present in the parent directory of app/)
The script goes through all the books in main README.md and starts fetching the extra details
from Goodreads and Google Search API. And the result is stored in utils/books.json and utils/book_name_to_details.json
(used for caching only).
Once the script completes the run, the utils/books.json file is copied to app/src/data/books.json manually.
And the website uses the data from app/src/data/books.json for generating the pages.
In most cases, you don't want to run the utils/update_json_files.py or make changes to it while working on the website.
The only time you want to mess with the script is when you want to fetch some extra data from API or want to update
the book.json file to include a newly added book or category.