Merge pull request #4 from OmkarPh/Omkar

Implemented validation for Registration credentials.

Author: hyperloo

routes/api/users.js

@@ -6,15 +6,33 @@ const jwt = require("jsonwebtoken");
 //Item Model
 const User = require("../../models/user");
 
+// Regex expressions:
+const emailRegex = new RegExp(/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/);
+
+// Constraints: Minimum Length: 8, Contains at least 1 special char, 1 number, 1 Capital Letter & 1 Small Letter
+const passwordRegex = new RegExp(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/);
+
+
 /*----------------- Register Route ---------------*/
 router.post("/", async (req, res) => {
   const { name, email, password } = req.body;
 
-  //simple validation
-  if (!name || !email || !password) {
+  // Simple pre-validation
+  if (!name || !email || !password)
     return res.status(400).send({ msg: "Please enter all fields" });
-  }
+  
+  // Brief Validation
+  if(name.length < 3)
+    return res.status(406).send({msg: "Name must have at least 3 characters"});
 
+  if (!emailRegex.test(email))
+    return res.status(406).send({msg: "Please provide valid email"});
+  
+  if(!passwordRegex.test(password))
+    return res.status(406).send({
+      msg: "Please provide password meeting following criteria: Minimum Length: 8, Contains at least 1 special char, 1 number, 1 Capital Letter & 1 Small Letter"
+    });
+  
   //Check for existing user
   const existingUser = await User.findOne({ email });