Removed unused modules + error handling

src/controllers/CartController.ts

@@ -1,5 +1,5 @@
 import { Request, Response } from 'express';
-import { Cart, ICart, Product, Order, IOrder } from '../mongoose/Schema';
+import { Cart, ICart, Order } from '../mongoose/Schema';
 import { sendEmailasync } from '../services/sendGrid';
 import { config } from 'dotenv';
 

src/controllers/ProductController.ts

@@ -5,7 +5,13 @@ export async function createProduct(req: Request, res: Response) {
   try {
     const { name, description, price, userId } = req.body;
     if(!name || !description || !price || !userId) {
-      res.status(400).json({ error: 'Name, description, price and user id are required.' });
+      res.status(400).json({ error: 'Name, description, price are required.' });
+      return;
+    }
+    
+    const productExists = await Product.exists({ name, userId });
+    if(productExists) {
+      res.status(400).json({ error: 'Product already exists.' });
       return;
     }
     const product: IProduct = await Product.create({

src/controllers/UserController.ts

@@ -14,10 +14,11 @@ export async function createUser(req: Request, res: Response) {
     // checkIfUserExists return true if the user exists
     const userExists = await User.exists({ email });
     if(userExists) {
-      return res.status(400).json({ error: 'User already exists' });
+      return res.status(400).json({ error: 'User already exists, Try login :)' });
     }
 
     const hashedPassword = await bcrypt.hash(password, 10);
+
     const user: IUser = await User.create({
       firstName,
       lastName,

src/middlewares/checkAuth.ts

@@ -1,6 +1,5 @@
-import express, { Request, Response, NextFunction } from 'express';
-import jwt, { JwtPayload } from 'jsonwebtoken';
-import cookieParser from 'cookie-parser';
+import { Request, Response, NextFunction } from 'express';
+import jwt from 'jsonwebtoken';
 
 interface AuthenticatedRequest extends Request {
   userId?: string;

src/routes/cart.ts

@@ -1,4 +1,4 @@
-import express, { Request } from 'express';
+import express from 'express';
 import { authenticateToken } from '../middlewares/checkAuth';
 import { addToCart, listCart, checkout } from '../controllers/CartController';
 

src/routes/product.ts

@@ -1,4 +1,4 @@
-import express, { Request } from 'express';
+import express from 'express';
 import { authenticateToken } from '../middlewares/checkAuth';
 import { createProduct, listProducts } from '../controllers/ProductController';