assignment completed

index.js

@@ -1,73 +1,245 @@
 const express = require('express')
+const { use } = require('express/lib/application');
 const app = express()
-const port = 3001
+const port = 3000
+
+// Middleware to parse URL-encoded bodies
+app.use(express.urlencoded({ extended: true }));
+
+const USERS = [{ username: "abc", password: 1234 }];
+const ADMIN = [{ username: "admin", password: 1234 }];
 
-const USERS = [];
 
 const QUESTIONS = [{
-    title: "Two states",
-    description: "Given an array , return the maximum of the array?",
-    testCases: [{
-        input: "[1,2,3,4,5]",
-        output: "5"
-    }]
+  title: "Two states",
+  description: "Given an array , return the maximum of the array?",
+  testCases: [{
+    input: "[1,2,3,4,5]",
+    output: "5"
+  }]
 }];
 
 
-const SUBMISSION = [
+const SUBMISSION = [{ username: "abc", submissions: [] }]
 
-]
-
-app.post('/signup', function(req, res) {
-  // Add logic to decode body
-  // body should have email and password
 
+app.get('/', (req, res) => {
+  res.send(`
+  <h1>Welcome to codevilla<h1/>
+  <a href="/login">Login</a><br>
+  <a href="/signup">SignUp</a>
+  `);
+})
 
-  //Store email and password (as is for now) in the USERS array above (only if the user with the given email doesnt exist)
+//--------------------Signup--------------------------//
+//logic for user registration request
+app.get('/signup', (req, res) => {
+  res.send(`
+  <form action="/signup" method="post">
+      <label>User Name</label><br>
+      <input type="text" id="username" name="username"><br>
+      <label>New Password</label><br>
+      <input type="text" id="password" name="password"><br>
+      <button type="submit">Submit</button>
+  <form/>`);
+})
 
+app.post('/signup', (req, res) => {
+  let username = req.body.username;
+  let password = Number(req.body.password);
+  let check = USERS.find(({ username: user }) => { return user === username })
+  if (!check) {
+    USERS.push({ username: username, password: password });
+    res.redirect('/login')
+    console.log(user)
+  }
+  else {
+    // res.status(400).json({ error: "username already taken" })
+    res.send("Username taken")
+    // res.redirect('/signup')
+  }
+})
 
-  // return back 200 status code to the client
-  res.send('Hello World!')
+//---------------Authentication middleware----------//
+// function Authenticate(req, res, next) {
+
+// }
+
+
+//--------------------Login--------------------------//
+//logic for user login request
+token = "nsknkn1231nk@"
+app.get('/login', (req, res) => {
+  if (req.headers.cookie) {
+    res.redirect('/questions')
+  }
+  res.send(`
+  <form action="/login" method="post">
+  <label>Username</label><br>
+  <input type="text" id="username" name="username"><br>
+  <label>password</label><br>
+  <input type="text" id="password" name="password"><br>
+  <button type="submit">Submit</button>
+  </form>`)
+})
+app.post('/login', (req, res) => {
+  let username = req.body.username;
+  let password = Number(req.body.password);
+  console.log(typeof username);
+  console.log(typeof password);
+  let check = USERS.find(data => data.username === username);
+
+  if (check && check.password === password) {
+    res.cookie('token', token, { maxAge: 3600000, httpOnly: true });
+    res.redirect(`/questions?username=${username}`);
+  } else {
+    res.status(401).send("Not Authorized");
+  }
 })
 
-app.post('/login', function(req, res) {
-  // Add logic to decode body
-  // body should have email and password
 
-  // Check if the user with the given email exists in the USERS array
-  // Also ensure that the password is the same
+//--------------------Qusetions--------------------------//
+//logic for giving the user random Q in available questions
+app.get('/questions', (req, res) => {
+
+  // Check if the token is valid (e.g., compare it with a stored token)
+  if (req.headers.cookie) {
+    let question_num = Math.floor(Math.random() * QUESTIONS.length)
+    console.log(question_num)
+    if (QUESTIONS.length != 0) {
+      let username = req.query.username;
+      let title = QUESTIONS[question_num].title;
+      let description = QUESTIONS[question_num].description;
+      let testcases = QUESTIONS[question_num].testCases;
+
+      //to send json string
+      // res.write(questionsString);
+
+      //to send html
+      // res.write(htmlContent);
+
+      //to end response
+      // res.end();
+
+      res.status(200).send(`
+      <div>Username : ${username}</div>
+      <form action='/submissions?username=${username}' method="post">
+          <ul>
+          <li>${title}</li>
+          <li>${description}</li>
+          <li>input : ${testcases[0].input}</li>
+          <li>output : ${testcases[0].output}</li>
+          </ul>
+          <input id="code" name="code">
+          <button type="submit">submit</button>
+      </form>
+      `)
+    } else {
+      res.send("No questions available")
+    }
+  } else {
+    res.send('Not Authorized');
+  }
+})
 
 
-  // If the password is the same, return back 200 status code to the client
-  // Also send back a token (any random string will do for now)
-  // If the password is not the same, return back 401 status code to the client
+app.post('/questions', (req, res) => {
+  let title = req.body.title
+  let description = req.body.description
+  let input = req.body.input
+  let output = req.body.output
 
+  QUESTIONS.push({ title: title, description: description, testCases: [{ input: input, output: output }] })
+  res.redirect('/login')
+})
+
+//--------------------Submissions--------------------------//
+//logic to let user make submissions
+app.post('/submissions', (req, res) => {
+  let username = req.query.username;
+  console.log("username", username)
+  let code = req.body.code;
+  if (code === code.toLowerCase()) {
+    let user_index = SUBMISSION.findIndex(user => user.username === username);
+    SUBMISSION[user_index].submissions.push(code)
+    console.log(user_index)
+    console.log(SUBMISSION[user_index].submissions[0])
+    res.redirect(`/submissions?userindex=${user_index}`)
+  } else {
+    res.send(`
+      <div>not even close</div>
+      `)
+  }
+})
 
-  res.send('Hello World from route 2!')
+//logic to show the user submissions
+app.get('/submissions', (req, res) => {
+  if (req.headers.cookie) {
+    user_index = req.query.userindex
+    res.send(`
+  <div>Your submissions are</div>
+  <div>${SUBMISSION[user_index].submissions}</div>
+  <a href='logout'>LOGOUT</a>
+  `)
+  }
+  else {
+    res.send("Not Authorized")
+  }
 })
 
-app.get('/questions', function(req, res) {
 
-  //return the user all the questions in the QUESTIONS array
-  res.send("Hello World from route 3!")
+//------------------logout---------------------------//
+//logi for logging out and clearing cookie
+app.get('/logout', (req, res) => {
+  res.cookie('token', '', { expires: new Date(0), httpOnly: true });
+  res.redirect('/')
 })
 
-app.get("/submissions", function(req, res) {
-   // return the users submissions for this problem
-  res.send("Hello World from route 4!")
-});
 
+//--------------------admin--------------------------//
+//login for admin page
+app.get('/admin', (req, res) => {
+  res.send(`
+  <form action="/admin" method="post">
+  <label>admin Username</label><br>
+  <input type="text" name="username"><br>
+  <label>Password</label><br>
+  <input type="text" name="password"><br>
+  <button type="submit">Submit</button>
+  </form>
+  `)
+})
 
-app.post("/submissions", function(req, res) {
-   // let the user submit a problem, randomly accept or reject the solution
-   // Store the submission in the SUBMISSION array above
-  res.send("Hello World from route 4!")
-});
 
-// leaving as hard todos
-// Create a route that lets an admin add a new problem
-// ensure that only admins can do that.
+//add question for admin
+app.post('/admin', (req, res) => {
+
+  let adminUser = req.body.username;
+  let adminPassword = Number(req.body.password);
+  let check = ADMIN.find(({ username: user }) => { return user === adminUser })
+  if (check && check.password === adminPassword) {
+    res.send(`
+  <form action="/questions" method="post">
+  <label>Question</label><br>
+  <input type="text" name="title"><br>
+  <label>Description</label><br>
+  <input type="text" name="description"><br>
+  <label>Testcases:</label><br>
+  <label>Input</label><br>
+  <input type="text" name="input"></input><br>
+  <label>Output</label><br>
+  <input type="text" name="output"></input><br>
+  <button type="submit">Submit</button>
+  </form>
+  `)
+  } else {
+    res.status(401).send("Not Authorized")
+  }
+})
+
+// app.
+//-----------------server confirmation------------------------//
 
-app.listen(port, function() {
-  console.log(`Example app listening on port ${port}`)
-})
+app.listen(port, () => {
+  console.log(`Example app listening on port ${port}`);
+})