Update general.js

final_project/router/general.js

@@ -11,21 +11,68 @@ public_users.post("/register", (req,res) => {
 });
 
 // Get the book list available in the shop
-public_users.get('/',function (req, res) {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+public_users.get('/',async function (req, res) {
+  try{
+    const getBooksAsync = () => {
+      return new promise((resolve, reject) => {
+        setTimeout(() => {
+          resolve(books);
+        },100);
+      });
+    });
+
+  const allBooks = awit getBooksAsync();
+  return res.status(200).send(JSON.stringify(allBooks, null, 4));
+  }catch(err){
+    return res.status(500).json({message: "Failed to retrieve books."});
+  }
+
 });
 
 // Get book details based on ISBN
-public_users.get('/isbn/:isbn',function (req, res) {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+public_users.get('/isbn/:isbn',async function (req, res) {
+  const isbn = req.parms.isbn;
+
+  const getBookByISBN = (isbn) => {
+    return new promise((resolve, reject) => {
+      const book = books[isbn]
+      if(book) {
+        resolve(book);
+      }else{
+        reject("Book not found");
+      }
+    });
+  };
+
+  try{
+    const book = await getBookByISBN(isbn);
+    return res.status(200).json(book);
+  }catch(error){
+    return res.status(404).json({ message: error });
+  }
  });
 
 // Get book details based on author
-public_users.get('/author/:author',function (req, res) {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+public_users.get('/author/:author',async function (req, res) {
+  const author = req.params.author;
+
+  const getBooksByAuthor = (author) => {
+    return new Promise((resolve, reject) => {
+      const booksByAuthor = Object.values(books).filter(book => book.author === author);
+      if (booksByAuthor.length > 0) {
+        resolve(booksByAuthor);
+      } else {
+        reject("No books found by this author");
+      }
+    });
+  };
+
+  try {
+    const booksByAuthor = await getBooksByAuthor(author);
+    return res.status(200).json(booksByAuthor);
+  } catch (error) {
+    return res.status(404).json({ message: error });
+  }
 });
 
 // Get all books based on title