ensureAuthenticated midddleware not correctly authenticating - node.js

Question

a user login successfully and redirected to profile was implemented with success.but, when i try to access a new route by requesting http://localhost:5000/user/admin/request/newAdmin route the authentication middleware responses with You are not authorized to view this page after login why is that???
server.js
require("dotenv").config();
const express = require("express");
const app = express();
// const flash = require("connect-flash");
const session = require("express-session");
const passport = require("passport");
const mongoose = require("mongoose");
const MongoStore = require("connect-mongo");
const cors = require("cors");
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(cors());
// app.use(flash());
app.use(
session({
secret: process.env.SESSION_SECRET,
resave: true,
saveUninitialized: true,
store: MongoStore.create({
mongoUrl: process.env.DB,
collection: "sessions",
}),
cookie: { secure: false, maxAge: 1000 * 60 * 60 * 24 * 3 },
})
);
app.use(passport.initialize());
app.use(passport.session());
mongoose
.connect(process.env.DB)
.then(() => {
console.log("DB connection successful");
})
.catch((err) => {
console.log(`DB connection Error: ${err}`);
});
const userRouter = require("./routes/userRoutes");
app.use("/user", userRouter);
const PORT = process.env.PORT || 5000;
app.listen(PORT, () => {
console.log(`server is running on port ${PORT}`);
});
module.exports = app;
userRoutes.js
const router = require("express").Router();
const passport = require("passport");
const { ObjectID } = require("mongodb");
const LocalStrategy = require("passport-local");
const bcrypt = require("bcrypt");
const crypto = require("crypto");
const Token = require("../models/token");
const sendEmail = require("../utils/sendEmail");
const User = require("../models/userModel.js");
router.route("/register").post(
(req, res, next) => {
User.findOne({ fullName: req.body.fullName }, (err, user) => {
if (err) {
next(err);
} else if (user) {
res.json({ user: "user with that name already exists!" });
} else {
const {
fullName,
email,
userType,
department,
stream,
id,
batch,
phoneNumber,
password,
} = req.body;
const hash = bcrypt.hashSync(password, 12);
console.log(hash);
if(userType === "Admin"){
User.find({ userType: "Admin" }, (err, users) => {
if (err) console.log(err);
if(users.length === 0 ){
const newUser = new User({
fullName,
email,
userType,
department,
stream,
id,
batch,
phoneNumber,
password: hash,
});
newUser.save((err, data) => {
if (err) console.log(err);
next(null, data);
});
}else{
const newUser = new User({
fullName,
email,
userType,
department,
stream,
id,
batch,
phoneNumber,
password: hash,
approved: false
});
newUser.save((err, data) => {
if (err) console.log(err);
next(null, data);
})
}
})
}else{
const newUser = new User({
fullName,
email,
userType,
department,
stream,
id,
batch,
phoneNumber,
password: hash,
});
newUser.save((err, data) => {
if (err) console.log(err);
next(null, data);
});
}
}
});
},
passport.authenticate("local", { failureRedirect: "/" }),
(req, res, next) => {
const userAuth = req.user.fullName;
if (userAuth) {
User.findOne({ fullName: userAuth }, (err, user) => {
if (err) console.log(err);
const userPriv = user.userType;
if(userPriv === "Student"){
return res.json({ user: user.fullName ,identity: {id: "Student"}});
}
else if(userPriv === "Admin"){
if(user.approved){
return res.json({ user: user.fullName , identity: {id: "Admin",approved: true} });
}
return res.json({ user: user.fullName , identity: {id: "Admin",approved: false} });
}else{
return res.json({ user: user.fullName , identity: {id: "Teacher"} });
}
});
} else {
res.sendStatus(401).json({ user: "Incorrect password or email" });
}
}
);
router.route("/login").post(passport.authenticate("local"), (req, res) => {
const userAuth = req.user.fullName;
console.log(req.user);
if (userAuth) {
User.findOne({ fullName: userAuth }, (err, user) => {
if (err) console.log(err);
const userPriv = user.userType;
if(userPriv === "Student"){
return res.json({ user: user.fullName ,identity: {id: "Student"}});
}
else if(userPriv === "Admin"){
if(user.approved){
return res.json({ user: user.fullName , identity: {id: "Admin",approved: true} });
}
return res.json({ user: user.fullName , identity: {id: "Admin",approved: false} });
}else{
return res.json({ user: user.fullName , identity: {id: "Teacher"} });
}
});
} else {
res.sendStatus(401).json({ user: "Incorrect password or email" });
}
});
router.route("/admin/request/newAdmin").get(ensureAuthenticated,(req, res) => {
User.find({userType: "Admin", approved: false},(err,users) => {
if (err) console.log(err);
res.json({users});
})
});
router.route("/logout").get((req, res, next) => {
req.logout(function (err) {
if (err) {
return next(err);
}
console.log("the user has logged out!");
res.json({ user: "logout success!" });
});
});
passport.serializeUser((user, done) => {
done(null, user._id);
});
passport.deserializeUser((id, done) => {
User.findOne({ _id: new ObjectID(id) }, (err, doc) => {
done(null, doc);
});
});
const customFields = {
usernameField: "email",
};
passport.use(
new LocalStrategy(customFields, (email, password, done) => {
User.findOne({ email }, (err, user) => {
console.log(`User ${user.email} attempted to log in.`);
if (err) return done(err);
if (!user) return done(null, false);
if (!bcrypt.compareSync(password, user.password)) {
return done(null, false);
}
return done(null, user);
});
})
);
function ensureAuthenticated(req, res, next) {
if (req.isAuthenticated()) {
return next();
}
console.log(req.isAuthenticated());
console.log(req.user);
res.redirect("/user/err");
}
router.route("/err").get((req,res) => {
res.status(401).json({ msg: "You are not authorized to view this page" });
})
module.exports = router;
i was expecting for the ensureAuthenticated middleware to respond with authenticated because the user is logged in.but one thing i noticed is when i console logged req.user in the login route it set it to the current user object but in the ensureAuthenticated middleware it is undefined even if the user has not logged out.why is that?may be am i wrong when initializing the session and passport in server.js?