Library-management system using solidity

I have a blog post on which is a follow along tutorial :Blog Link

Future scope for this project

Use ZK technology to enhance privacy.
Store book data in a database and perform computations only on the blockchain.
Invest staked tokens (DAI) to obtain a fair return and share a portion of the interest with the librarian as an incentive.
Allow borrowing of multiple books at the same time.
Stake different amounts of DAI on the basis of price of the book.
Implement a penalty for late book returns.
Add a function in the smart contract to enable the librarian to remove books.