Create User Registration API with routes/controllers

IT18021080/Telemedicine-Chat-App/backend/controllers/userControllers.js

+const asyncHandler = require("express-async-handler");
+const User = require("../models/userModel");
+
+const registerUser = asyncHandler(async (req, res) => {
+    const { name, email, password, pic } = req.body;
+
+    if (!name || !email || !password) {
+        res.status(400);
+        throw new Error("Please Enter all the Feilds");
+    }
+//If user is already exists
+    const userExists = await User.findOne({ email }); // query get from MongoDB
+
+    if (userExists) {
+        res.status(400);
+        throw new Error("User already exists");
+    }
+//otherwise create new user
+//user.create get from MongoDB
+    const user = await User.create({
+        name,
+        email,
+        password,
+        pic,
+    });
+
+    if (user) {
+        res.status(201).json({
+            _id: user._id,
+            name: user.name,
+            email: user.email,
+            pic: user.pic,
+        });
+    } else {
+        res.status(400);
+        throw new Error("Failed to Create the User");
+    }
+});
+
+module.exports = { registerUser };
\ No newline at end of file

IT18021080/Telemedicine-Chat-App/backend/models/userModel.js

@@ -2,11 +2,11 @@ const mongoose = require("mongoose");
 
 const userSchema = mongoose.Schema({
     name: { type: String, required: true },
-    email: { type: String, required: true },
+    email: { type: String, required: true,unique:true },
     password: { type: String, required: true },
     pic: {
         type: String,
-        required: true,
+        //required: true,   if it is required i can use this reuired as true
         default:
             "https://icon-library.com/images/anonymous-avatar-icon/anonymous-avatar-icon-25.jpg",
     },

IT18021080/Telemedicine-Chat-App/backend/routes/userRoutes.js

 const express = require("express");
+const { registerUser } = require("../controllers/userControllers");
 
 const router = express.Router();
 
-//router.route("/").post(registerUser)
+router.route("/").post(registerUser);
 //router.post("/login",authUser)
 
 module.exports = router;