Login authentication route using JWT

loginAuthRoute.js

// @route POST api/auth
// @desc Auth user
// @access Public

router.post("/", async (req, res) => {
  const { email, password } = req.body
  
  // Simple validation
  if (!email || !password) return res.status(400).json({ msg: "Please enter all fields" })
  
  // Check for existing user
  const user = await User.findOne({ email })
  if (!user) return res.status(400).json({ msg: "User doesn't exists" });
  
  // Validate password
  bcrypt.compare(password, user.password)
        .then(isMatch => {
    if (!isMatch) return res.status(400).json({ msg: "Invalid credentials"})
    
    // If it does match, we'll generate a JWT token
    jwt.sign(
      { id: user.id },
      process.env.JWT_SECRET,
      { expiresIn: 4800 },
      (err, token) => {
        if (err) throw err;
        
        res.json({
          token,
          user: {
            id: user.id,
            name: user.name,
            email: user.email,
        })
      }
    ) 
    
  })
})

User.js

const mongoose = require("mongoose")
const Schema = mongoose.Schema

// Create Schema
const UserSchema = new Schema({
  name: {
    type: String,
    required: true,
  },
  email: {
    type: String,
    required: true,
    unique: true,
  },
  password: {
    type: String,
    required: true,
  },
  register_date: {
    type: Date,
    default: Date.now,
  },
});


// Creating a model out of schema
const user = mongoose.model("user", userSchema);

export default user;