Book directory project

1const router = require('express').Router()
2const books = require('./data')
3
4let booksDirectory = books
5
6router.get('/reset', function (req, res) {
7    booksDirectory = books
8    res.send('ok')
9})
10
11router.get('/books', function (req, res) {
12    res.send(booksDirectory)
13})
14
15router.delete('/books/:id', function (req, res) {
16   const { id } = req.params;
17  booksDirectory.forEach((book, index) => {
18    if (book.id === parseInt(id)) {
19      booksDirectory.splice(index);
20    }
21  });
22  res.json({ message: `Book with id #${id} has been deleted` });
23})
24
25router.get('/books/:id', function (req, res) {
26    const { id } = req.params;
27    res.json(booksDirectory.filter((ele) => ele.isbn === parseInt(id)));
28})
29
30router.post('/books', function (req, res) {
31    const {
32        title,
33        isbn,
34        pageCount,
35        publishedDate,
36        thumbnailUrl,
37        shortDescription,
38        longDescription,
39        status,
40        authors,
41        categories,
42    } = req.body
43    booksDirectory.push({
44        title,
45        isbn,
46        pageCount,
47        publishedDate,
48        thumbnailUrl,
49        shortDescription,
50        longDescription,
51        status,
52        authors,
53        categories,
54    })
55   
56})
57
58router.put('/books/:id', function (req, res) {
59    const { id } = req.params
60    const {
61        title,
62        isbn,
63        pageCount,
64        publishedDate,
65        thumbnailUrl,
66        shortDescription,
67        longDescription,
68        status,
69        authors,
70        categories,
71    } = req.body
72    booksDirectory.forEach((book, index) => {
73        if (book.id === parseInt(id)) {
74            booksDirectory[index] = {
75                title,
76                isbn,
77                pageCount,
78                publishedDate,
79                thumbnailUrl,
80                shortDescription,
81                longDescription,
82                status,
83                authors,
84                categories,
85            };
86        }
87    });
88    res.json({ message: `The book with ID ${id} has been updated` });
89})
90
91
92
93module.exports = router```
94
95what are the mistakes ?