thêm tính năng đăng nhập

User.js

@@ -0,0 +1,14 @@
+const mongoose = require('mongoose');
+
+const UserSchema = new mongoose.Schema({
+    name: String, 
+    email: String,
+    password: String,
+    role: {
+        type: String,
+        default: 'user'
+    }
+});
+
+const userModel = mongoose.model('user', UserSchema);
+module.exports = userModel;

index.js

@@ -0,0 +1,86 @@
+const express = require('express');
+const mongoose = require('mongoose');
+const cors = require('cors');
+const bcrypt = require('bcrypt');
+const jwt = require('jsonwebtoken');
+const cookieParser = require('cookie-parser');
+const UserModel = require('./models/User');
+
+const app = express();
+app.use(express.json());
+app.use(cors({
+    origin: ["http://localhost:3001"],
+    methods: ["GET", "POST"],
+    credentials: true
+}));
+app.use(cookieParser());
+
+mongoose.connect('mongodb://localhost:27017/MUT_LMS');
+
+const varifyUser = (req, res, next) => {
+    const token = req.cookies.token;
+    if (!token) {
+        return res.json("Token is missing")
+    }
+    else {
+        return jwt.verify(token, "jwt-secret-key", (err, decoded) => {
+            if (err) {
+                return res.json("Error with token")
+            }
+            else {
+                if (decoded.role === "admin") {
+                   next();
+                } else {
+                    return res.json("You are not authorized")
+                }
+
+            }
+        })
+    }
+
+}
+app.get('/dashboard', varifyUser, (req, res) => {
+    res.json("Dashboard");
+})
+// register
+app.post('/register', async (req, res) => {
+    const { name, email, password } = req.body;
+    bcrypt.hash(password, 10)
+    .then((hash) => {
+        UserModel.create({
+            name,
+            email,
+            password: hash
+        })
+        .then (user => res.json("Success!"))
+        .catch(err => res.json(err))
+    }).catch(err => res.json(err))
+})
+
+// login
+app.post('/login', async (req, res) => {
+    const { email, password } = req.body;
+    UserModel.findOne({ email: email })
+    .then(user => {
+        if (user) {
+            bcrypt.compare(password, user.password, (err, response) => {
+                if (response) {
+                    const token = jwt.sign({email: user.email, role: user.role},
+                        "jwt-secret-key", { expiresIn: '1d' })
+                    res.cookie("token", token)
+                    return res.json("Success!")
+                }
+                else {
+                    return res.json("The password you’ve entered is incorrect")
+                }
+            })
+        }   
+        else {
+            res.json("No record found")
+        }
+    })
+})
+
+app.listen(3001, () => {
+    console.log('Server is running on port 3001');
+});