Create auth.js

src/security/auth.js

@@ -0,0 +1,31 @@
+// src/security/auth.js
+const bcrypt = require('bcrypt');
+const jwt = require('jsonwebtoken');
+const User = require('../models/User'); // Assuming you have a User model
+require('dotenv').config();
+
+const SALT_ROUNDS = 10;
+
+async function registerUser (username, password) {
+    const hashedPassword = await bcrypt.hash(password, SALT_ROUNDS);
+    const newUser  = new User({ username, password: hashedPassword });
+    await newUser .save();
+    return newUser ;
+}
+
+async function authenticateUser (username, password) {
+    const user = await User.findOne({ username });
+    if (!user) throw new Error('User  not found');
+
+    const isMatch = await bcrypt.compare(password, user.password);
+    if (!isMatch) throw new Error('Invalid password');
+
+    const token = jwt.sign({ userId: user._id }, process.env.JWT_SECRET, { expiresIn: '1h' });
+    return { token, user };
+}
+
+function verifyToken(token) {
+    return jwt.verify(token, process.env.JWT_SECRET);
+}
+
+module.exports = { registerUser , authenticateUser , verifyToken };