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diff --git a/final_project/Images_of_task/Task 10.png b/final_project/Images_of_task/Task 10.png
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diff --git a/final_project/Images_of_task/Task 11.png b/final_project/Images_of_task/Task 11.png
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diff --git a/final_project/Images_of_task/Task 12.png b/final_project/Images_of_task/Task 12.png
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diff --git a/final_project/Images_of_task/Task 2.png b/final_project/Images_of_task/Task 2.png
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diff --git a/final_project/Images_of_task/Task 3.png b/final_project/Images_of_task/Task 3.png
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diff --git a/final_project/Images_of_task/Task 4.png b/final_project/Images_of_task/Task 4.png
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diff --git a/final_project/Images_of_task/Task 7.png b/final_project/Images_of_task/Task 7.png
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diff --git a/final_project/Images_of_task/Task 8.png b/final_project/Images_of_task/Task 8.png
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diff --git a/final_project/Images_of_task/Task 9.png b/final_project/Images_of_task/Task 9.png
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diff --git a/final_project/Test/Teste_cmd b/final_project/Test/Teste_cmd
new file mode 100644
index 0000000000..39f7ded639
--- /dev/null
+++ b/final_project/Test/Teste_cmd
@@ -0,0 +1,26 @@
+$body = @{
+    username = "john1"
+    password = "pass123"
+} | ConvertTo-Json
+
+Invoke-RestMethod -Uri "http://localhost:5000/register" -Method POST -Body $body -ContentType "application/json"
+
+
+##Login success
+Write-Host "`n=== login ===" -ForegroundColor Green
+$loginBody = @{
+    username = "john1"
+    password = "pass123"
+} | ConvertTo-Json
+
+try {
+    $loginResult = Invoke-RestMethod -Uri "http://localhost:5000/customer/login" -Method POST -Body $loginBody -ContentType "application/json" -SessionVariable session
+    Write-Host "Yes: $($loginResult.message)" -ForegroundColor Green
+} catch {
+    Write-Host "No: $($_.Exception.Response.StatusCode) - $($_.ErrorDetails.Message)" -ForegroundColor Red
+} 
+Invoke-RestMethod -Uri "http://localhost:5000/customer/auth/review/1" `
+  -Method Put `
+  -Headers @{ "Content-Type" = "application/json" } `
+  -Body '{"review":"This is John’s review"}'
+
diff --git a/final_project/index.js b/final_project/index.js
index b890c1d380..4d6e5cebc3 100644
--- a/final_project/index.js
+++ b/final_project/index.js
@@ -12,6 +12,10 @@ app.use("/customer",session({secret:"fingerprint_customer",resave: true, saveUni
 
 app.use("/customer/auth/*", function auth(req,res,next){
 //Write the authenication mechanism here
+    if (!req.session || !req.session.authorization || !req.session.authorization.username) {
+        return res.status(401).json({ message: "User not logged in" });
+    }
+    next(); // very important to call next()
 });
  
 const PORT =5000;
diff --git a/final_project/router/auth_users.js b/final_project/router/auth_users.js
index 8cb6ef6e40..cf788e65a3 100644
--- a/final_project/router/auth_users.js
+++ b/final_project/router/auth_users.js
@@ -7,24 +7,106 @@ let users = [];
 
 const isValid = (username)=>{ //returns boolean
 //write code to check is the username is valid
+   return (username in users);
 }
 
 const authenticatedUser = (username,password)=>{ //returns boolean
 //write code to check if username and password match the one we have in records.
+   if(isValid(username)){
+     if(users[username] === password){
+       return true;
+     }else{
+       return false;
+     }
+   }else{
+      return false;
+   }
 }
 
 //only registered users can login
 regd_users.post("/login", (req,res) => {
   //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+  let username = req.body.username;
+  let password = req.body.password;
+  if(!username || !password){
+     res.status(400).json({message : `Please input the username and the password`});
+  }
+
+  if(!authenticatedUser(username,password)){
+    res.status(401).json({message : `Username and password not match`})
+  }else{
+
+      let accesstoken = jwt.sign({data : username} , 'access', {expiresIn : 60 * 60})
+      req.session.authorization = {
+        accesstoken,
+        username
+      }
+      return res.status(200).json(
+        {
+          message : `User ${username} has login `,
+          token: accesstoken
+        }
+      )
+    
+  }
+  
+
+  //return res.status(300).json({message: "Yet to be implemented"});
 });
 
 // Add a book review
 regd_users.put("/auth/review/:isbn", (req, res) => {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+
+    let isbn = req.params.isbn;
+    let username = req.session.authorization.username;
+    let review = req.body.review;
+
+    if (!review || review.trim().length === 0) {
+        return res.status(400).json({ message: "Review text is required" });
+    }
+
+    let book = books[isbn];
+    if (!book) {
+        return res.status(404).json({ message: "Book not found" });
+    }
+
+    book.reviews[username] = review;
+
+    return res.status(200).json({
+        message: "Review successfully added/updated",
+        reviews: book.reviews
+    });
 });
 
+//delete review
+regd_users.delete("/auth/review/:isbn", (req, res) => {
+    
+    let isbn = req.params.isbn;
+    let username = req.session.authorization.username;
+    console.log("Je suis ici")
+
+    let book = books[isbn];
+    if (!book) {
+        return res.status(404).json({ message: "Book not found" });
+    }
+
+    let review = book.reviews[username]
+    
+    if(review){
+      delete book.reviews[username];
+
+      return res.status(200).json({
+          message: `Review ${review} successfully deleted`
+      })
+  }else{
+       return res.status(400).json({
+        message: `Review for this user not exist`
+    })
+
+  }
+})
+
+
 module.exports.authenticated = regd_users;
 module.exports.isValid = isValid;
 module.exports.users = users;
diff --git a/final_project/router/general.js b/final_project/router/general.js
index 9eb0ac1a91..86b91dc493 100644
--- a/final_project/router/general.js
+++ b/final_project/router/general.js
@@ -7,37 +7,114 @@ 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"});
+  let username = req.body.username;
+  let password = req.body.password;
+
+  if(!username || !password){
+    return res.status(400).json({message: "Please enter the username and the password!"});
+  }
+  
+
+  if(username in users){
+    return res.status(409).json({message: `User ${username} has already been registered`});
+  }
+  
+
+  users[username] = password;
+  return res.status(201).json({message: `New User ${username} has been registered`});
+
 });
 
 // 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('/', function (req, res) {
+    new Promise((resolve, reject) => {
+        if (books) {
+            resolve(books);
+        } else {
+            reject("Books not found");
+        }
+    })
+    .then(data => res.status(200).json(data))
+    .catch(err => res.status(500).json({ message: err }));
 });
 
+
 // 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"});
+
+  new Promise((resolve,reject) => {
+      let isbn = req.params.isbn;
+      let book_find = books[isbn];
+      if(book_find){
+        resolve(book_find);
+      }else{
+        reject("Book not found");
+      }
+
+  })
+  .then(data => res.status(200).json(data))
+  .catch(err => res.status(500).json({message : err}));
+
  });
   
 // 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"});
+  new Promise((resolve,reject) =>{
+     let author = req.params.author;
+      let book_find_with_author = {};
+      for(let isbn in books){
+        if(books[isbn].author === author){
+          book_find_with_author[isbn] = books[isbn]
+        }
+      }
+
+      if(book_find_with_author){
+        resolve(book_find_with_author);
+      }else{
+        reject("No Book Found");
+      }
+
+    
+  }).then(data => res.status(200).json(data))
+  .catch(err => res.status(500).json({message : err}))
+
 });
 
 // Get all books based on title
 public_users.get('/title/:title',function (req, res) {
-  //Write your code here
-  return res.status(300).json({message: "Yet to be implemented"});
+
+  new Promise((resolve,reject)=>{
+      let title = req.params.title;
+      let book_find_with_title = {};
+      for(let isbn in books){
+        if(books[isbn].title === title){
+          book_find_with_title[isbn] = books[isbn]
+        }
+      }
+      if(book_find_with_title){
+        resolve(book_find_with_title)
+      }else{
+        reject("No book found with your title")
+      }
+
+  }).then(data=>res.status(200).json(data))
+  .catch(err=> res.status(500).json({message : err}))
 });
 
 //  Get book review
 public_users.get('/review/:isbn',function (req, res) {
   //Write your code here
+  let isbn = req.params.isbn;
+  let book_find = books[isbn];
+  if(book_find){
+    return res.status(200).json(books[isbn].reviews)
+  }
   return res.status(300).json({message: "Yet to be implemented"});
 });
 
+
+
 module.exports.general = public_users;