Essential backend functionality, including logins.

api/routes/bookRouter.js

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+'use strict';
+
+const express = require('express');
+const router = express.Router();
+const book = require('../controllers/bookController');
+const requirePermission = require('../../utils/requirePermission');
+
+router.route('/')
+  .get(book.list_all)
+  .post(requirePermission("borrow_books"), book.create);
+
+router.route('/:bookId')
+  .get(book.get)
+  .put(book.update)
+  .delete(book.delete);
+
+module.exports = router;