improving responses + added clear cart

src/controllers/CartController.ts

@@ -1,5 +1,5 @@
 import { Request, Response } from 'express';
-import { Cart, ICart, Order } from '../mongoose/Schema';
+import { Cart, ICart, Order, Product } from '../mongoose/Schema';
 import { sendEmailasync } from '../services/sendGrid';
 import { config } from 'dotenv';
 
@@ -8,8 +8,13 @@ config();
 export async function addToCart(req: Request, res: Response) {
   try {
     const { userId, productId } = req.body;
-    if (!productId) {
+    if (!productId || productId.length !== 24) {
-      res.status(400).json({ error: 'Product id is required.' });
+      res.status(400).json({ error: 'A Valid Product id is required.' });
+      return;
+    }
+    const isProductExists = await Product.exists({ _id: productId });
+    if (!isProductExists) {
+      res.status(404).json({ error: 'Product not found.' });
       return;
     }
     let cart: ICart | null = await Cart.findOne({ userId });
@@ -28,7 +33,9 @@ export async function addToCart(req: Request, res: Response) {
       cart.markModified('products');
     }
     await cart.save();
-    res.status(200).json(cart);
+    res.status(200).json({
+      products: cart.products,
+    });
   } catch (error) {
     console.error('Error adding product to cart:', error);
     res.status(500).json({ error: 'An error occurred while adding the product to the cart.' });
@@ -50,6 +57,17 @@ export async function listCart(req: Request, res: Response) {
   }
 }
 
+export async function clearCart(req: Request, res: Response) {
+  try {
+    const { userId } = req.body;
+    await removeCart(userId);
+    res.status(200).json({ message: 'Cart cleared successfully' });
+  } catch (error) {
+    console.error('Error clearing cart:', error);
+    res.status(500).json({ error: 'An error occurred while clearing the cart.' });
+  }
+}
+
 export async function checkout(req: Request, res: Response) {
 
   const { userId } = req.body;
@@ -73,3 +91,4 @@ export async function checkout(req: Request, res: Response) {
 async function removeCart(userId: string) {
   await Cart.deleteOne({ userId });
 }
+

src/routes/cart.ts

@@ -1,6 +1,6 @@
 import express from 'express';
 import { authenticateToken } from '../middlewares/checkAuth';
-import { addToCart, listCart, checkout } from '../controllers/CartController';
+import { addToCart, listCart, checkout, clearCart } from '../controllers/CartController';
 
 
 
@@ -10,5 +10,6 @@ cartRouter.post('/', authenticateToken, addToCart);
 cartRouter.get('/', authenticateToken, listCart);
 
 cartRouter.post('/checkout', authenticateToken, checkout);
+cartRouter.delete('/', authenticateToken, clearCart)
 
 export default cartRouter;