check email exists in database

Author: Benevanio

routes/auth.js

@@ -1,38 +1,36 @@
 const router = require('express').Router();
 const User = require('../model/user');
-const Joi = require ('joi')
+const {
+    RegisterValidation
+} = require('../validation');
 
-const schema = Joi.object({
-    name: Joi.string()
-        .alphanum()
-        .min(3)
-        .max(30)
-        .required(),
-    password: Joi.string()
-        .pattern(new RegExp('^[a-zA-Z0-9]{3,30}$')),
-    repeat_password: Joi.ref('password'),
-    email: Joi.string()
-        .email({ minDomainSegments: 2, tlds: { allow: ['com', 'net'] } })
-
-
-});
 router.post('/register', async (req, res) => {
     // Validate the data before we make a user
-    const { error } = schema.validate(req.body);
-   if(error) return res.status(400).send(error.details[0].message);
-    const user = new User({
-        name: req.body.name,
-        email: req.body.email,
-        password: req.body.password,
-        date: req.body.date
+    const {
+        error
+    } = RegisterValidation(req.body);
+    if (error) return res.status(400).send(error.details[0].message);
+    //create new user
+    const emailExist = await User.findOne({
+        email: req.body.email
     });
-   try{
+    if (emailExist) return res.status(400).send('Email already exists');
+
+const user = new User({
+    name: req.body.name,
+    email: req.body.email,
+    password: req.body.password,
+    date: req.body.date
+});
+try {
+    //save user to MongoDB
     const savedUser = await user.save();
     res.send(savedUser);
-    }catch(err){
-        res .status(400).send(err);
-    }
-   
+} catch (err) {
+    //res.status in case of error
+    res.status(400).send(err);
+}
+
 });
 
 module.exports = router;

validation.js

@@ -0,0 +1,42 @@
+const Joi = require('joi');
+
+//validate users
+
+const RegisterValidation = (data) => {
+    const schema = Joi.object({
+        name: Joi.string()
+            .alphanum()
+            .min(3)
+            .max(30)
+            .required(),
+        password: Joi.string(),
+        //.pattern(new RegExp('^[a-zA-Z0-9]{3,30}$')),
+        //repeat_password: Joi.ref('password'),
+        email: Joi.string()
+            .email({
+                minDomainSegments: 2,
+                tlds: {
+                    allow: ['com', 'net']
+                }
+            })
+    });
+    return Joi.isSchema(data, schema);
+}
+const LoginValidation = (data) => {
+    const schema = Joi.object({
+        password: Joi.string(),
+        //.pattern(new RegExp('^[a-zA-Z0-9]{3,30}$')),
+        //repeat_password: Joi.ref('password'),
+        email: Joi.string()
+            .email({
+                minDomainSegments: 2,
+                tlds: {
+                    allow: ['com', 'net']
+                }
+            })
+    });
+    return Joi.isSchema(data, schema);
+}
+
+module.exports.RegisterValidation = RegisterValidation;
+module.exports.LoginValidation = LoginValidation;