user login implemented

backend/controllers/userController.js

@@ -8,7 +8,19 @@ const createToken = (_id) => {
 
 //login user
 exports.loginUser = async (req, res) => {
-    res.json({message: 'Login'})
+    const { email, password } = req.body;
+
+    try {
+        const user = await User.login(email, password);
+
+        //create token
+        const token = createToken(user._id);
+
+        res.status(200).json({ email, token });
+    }
+    catch (err) {
+        res.status(400).json({ error: err.message });
+    }
 };
 
 

backend/models/userModel.js

@@ -44,4 +44,27 @@ userSchema.statics.signup = async function(email, password) {
     return user;
 };
 
+//static login method
+userSchema.statics.login = async function(email, password) {
+
+    //validation
+    if (!email || !password) {
+        throw new Error('All fields are required');
+    }
+
+    const user = await this.findOne({ email });
+
+    if (!user) {
+        throw new Error('Invalid email or password');
+    }
+
+    const match = await bcrypt.compare(password, user.password);
+
+    if (!match) {
+        throw new Error('Invalid email or password');
+    }
+
+    return user;
+};
+
 module.exports = mongoose.model('User', userSchema);