generate_signatures.mjs

import fs from "node:fs";
import { hashElement } from 'folder-hash';

const options = {
    folders: { exclude: ['.*', 'node_modules', 'test_coverage'] },
    files: { include: ['*.js', '*.json', '*.png', '*.pdf', '*.jpg'] },
};

async function run() {
    let book_hashes = [];
    let books_to_hash = fs.readdirSync('public/books');
    for(var book_id in books_to_hash) {
        let book = books_to_hash[book_id];
        let result = await hashElement(`public/books/${book}`, options);
        book_hashes.push(result);
        fs.writeFileSync(`public/books/${book}/.signature`, JSON.stringify(result, null, "\t"));
    }
    fs.writeFileSync("public/book_signatures.json", JSON.stringify(book_hashes, null, "\t"));
}

run();