Book details

library-ui/src/components/libclient.tsx

@@ -37,10 +37,15 @@ export default function LibClient() {
           showDtls = true;
         }
         if (contentType === 'book_dtls') {
-          const copies = res.data.copies;
-          res.data = copies.map((copy: { imprint: string, status: string }) => {
-            return copy.imprint + ' | ' + copy.status;
+          const { title, author, bookInstances } = res.data;
+          // Display book title and author at the top
+          const headerInfo = [`Title: ${title}`, `Author: ${author}`];
+          // Map book instances to display format
+          const instancesInfo = bookInstances.map((instance: { imprint: string, status: string }) => {
+            return `Copy: ${instance.imprint} | Status: ${instance.status}`;
           });
+          // Combine header and instances information
+          res.data = [...headerInfo, ...instancesInfo];
         }
         setContent({ data: res.data, dtls: showDtls });
       });

models/book.ts

@@ -32,10 +32,12 @@ export interface IBook extends Document {
  * @extends Model
  * @property {Function} getAllBooksWithAuthors - A function to get all books with authors.
  * @property {Function} getBookCount - A function to get the count of books.
+ * @property {Function} getBookDetails - A function to get the details of a specific book.
  */
 interface IBookModel extends Model<IBook> {
   getAllBooksWithAuthors(projectionOpts: string, sortOpts?: { [key: string]: 1 | -1 }): Promise<IBook[]>;
   getBookCount(fitler?: FilterQuery<IBook>): Promise<number>;
+  getBookDetails(bookId: string): Promise<any>;
 }
 
 /**
@@ -83,6 +85,40 @@ BookSchema.statics.getBookCount = async function (filter?: FilterQuery<IBook>):
   return this.countDocuments(filter || {});
 }
 
+/**
+ * retrieves the details of a specific book including its author information and book instances
+ * @param bookId the ID of the book to retrieve details for
+ * @returns a promise that resolves to the book details or null if not found
+ */
+BookSchema.statics.getBookDetails = async function(bookId: string): Promise<any> {
+  try {
+    const BookInstance = mongoose.model('BookInstance');
+
+    // Find book by ID and populate author information
+    const book = await this.findById(bookId).populate('author');
+
+    if (!book) {
+      return null;
+    }
+
+    // Get all book instances for this book
+    const bookInstances = await BookInstance.find({ book: bookId });
+
+    // Format response with required fields
+    return {
+      title: book.title,
+      author: book.author.name,
+      bookInstances: bookInstances.map(instance => ({
+        imprint: instance.imprint,
+        status: instance.status
+      }))
+    };
+  } catch (error) {
+    console.error('Error getting book details:', error);
+    return null;
+  }
+}
+
 /**
  * retrieves an existing author by name and an existing genre by name,
  * and saves a new book in this collection with the provided title, summary, and ISBN.

pages/book_dtls.ts

@@ -0,0 +1,33 @@
+import express from 'express';
+import Book from '../models/book';
+
+const router = express.Router();
+
+/**
+ * @route GET /book_dtls
+ * @query id - The ID of the book to retrieve details for
+ * @returns An object containing the book title, author name, and book instances with imprint and status
+ * @description Retrieves detailed information about a specific book by its ID
+ */
+router.get('/', async (req, res) => {
+  try {
+    const bookId = req.query.id as string;
+
+    if (!bookId) {
+      return res.status(400).send({ error: 'Book ID is required' });
+    }
+
+    const bookDetails = await Book.getBookDetails(bookId);
+
+    if (!bookDetails) {
+      return res.status(404).send({ error: 'Book not found' });
+    }
+
+    res.status(200).send(bookDetails);
+  } catch (error) {
+    console.error('Error in book details route:', error);
+    res.status(500).send({ error: 'Internal server error' });
+  }
+});
+
+export default router;

server.ts

@@ -6,6 +6,7 @@ import availableRouter from './pages/books_status';
 import bookRouter from './pages/books';
 import authorRouter from './pages/authors';
 import createBookRouter from './pages/create_book';
+import bookDetailsRouter from './pages/book_dtls';
 
 // Create express app
 const app = express();
@@ -45,3 +46,5 @@ app.use('/books', bookRouter);
 app.use('/authors', authorRouter);
 
 app.use('/newbook', createBookRouter);
+
+app.use('/book_dtls', bookDetailsRouter);