authenticated login and implemented jwt token

server/controllers/userAuthentication.js

@@ -0,0 +1,70 @@
+const User = require("../models/user");
+const shortId = require("shortid");
+const expressJwt = require("express-jwt");
+const jwt = require("jsonwebtoken")
+
+exports.# = (req,res)=>{
+    // const {name,email,password} = req.body
+    // res.json({
+    //     user:{name,email,password}
+    // });
+    // if user exist 
+
+    User.findOne({email: req.body.email}).exec((err,user)=>{
+        if(user){
+            return res.status(400).json({
+                error: "Email already exists"
+            })
+        }
+        // if not 
+        const {name,email,password} = req.body
+        let username = shortId.generate()
+        let profile = `${process.env.CLIENT_URL}/profile/${username}`
+
+        // create a new user
+        let newUser = new User({name,email,password,profile,username})
+        // save that user
+        newUser.save((err,success)=>{
+            if(err){
+                return res.status(400).json({
+                    error:err
+                });
+            };
+            res.json({
+                message: "Completed # process.Please Login to continue"
+            });
+            // res.json({
+            //     user: success
+            // })
+        });
+    });
+};
+
+
+exports.login = (req,res)=>{
+    const {email,password} = req.body
+    //checking user existence
+    User.findOne({email}).exec((err,user)=>{
+        if(err || !user){
+            return res.status(400).json({
+                error: "You forgot to '#'.Email does not exist"
+            });
+        }
+    // authenticate the user
+        if(!user.authenticate(password)){
+            return res.status(400).json({
+                error: "Email and password does not match"
+            });
+        }
+    // token generation 
+        const token = jwt.sign({_id: user._id},process.env.JWT_TOKEN_SECRET,{expiresIn: "365d"})  
+
+        res.cookie("token",token,{expiresIn:"365d"})
+        const {_id,username,name,email,role} = user
+        return res.json({
+            token, 
+            user:{_id,username,name,email,role}
+        })
+    });
+
+}

server/routes/auth.js

@@ -1,10 +1,12 @@
 const express = require('express')
 const router = express.Router();
-const {#} = require("../controllers/#.js")
+const {#,login} = require("../controllers/userAuthentication.js")
+// const {signin} = require("../controllers")
 // importing validators
 const {runValidation} = require("../validators")
-const {user#Validator} = require("../validators/auth")
+const {user#Validator,userLoginValidator} = require("../validators/auth")
 
 router.post('/#',user#Validator,runValidation,#);
+router.post('/#',userLoginValidator,runValidation,login);
 
   module.exports = router;

server/validators/auth.js

@@ -6,3 +6,8 @@ exports.user#Validator = [
     check('password').isLength({min:6}).withMessage("password must be 6 characters"),
 ];
 
+exports.userLoginValidator = [
+    check('email').isEmail().withMessage("Please enter valid email address"),
+    check('password').isLength({min:6}).withMessage("password must be 6 characters"),
+];
+