completed task 5 & 6

final_project/router/general.js

@@ -5,10 +5,20 @@ let users = require("./auth_users.js").users;
 const public_users = express.Router();
 
 
-public_users.post("/register", (req,res) => {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
-});
+public_user.post("/register", (req,res) =>{
+  const {username, password} = req.body;
+
+  if(!username || !password){
+    return res.status(400).json({message: "username and password are required"});
+  }
+  const userExists = user.some(user => user.username === username);
+  if(userExists){
+    return res.status(409).json({message: "User already exists"});
+  }
+  user.push({username, password});
+  return res.status(200).json({messsage: "user registerd successfulluy"});
+}
+)};
 
 // Get the book list available in the shop
 public_users.get('/',function (req, res) {
@@ -36,8 +46,13 @@ public_users.get('/title/:title',function (req, res) {
 
 //  Get book review
 public_users.get('/review/:isbn',function (req, res) {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+  const isbn = req.params.isbn;
+  const book = book[isbn];
+  if(book && book.reviews){
+    return res.status(200).json(book.reviews);
+  }else{
+    return res.status(404).json({message: "Noreviews found for this book"});
+  }
 });
 
 module.exports.general = public_users;