Added controller and route for check existing product

controllers/productControllers.js

@@ -30,6 +30,26 @@ module.exports.createProduct = async (req, res) => {
   }
 };
 
+module.exports.isProductExisting = async (req, res) => {
+   try {
+      const { productName } = req.body;
+
+
+      const existingProduct = await Product.findOne({ name: productName });
+
+      const productExists = !!existingProduct;
+      
+      if (productExists == true) {
+        res.json(true);  
+      } else {
+        res.json(false);
+      }
+      
+    } catch (error) {
+      console.error(error);
+      res.status(500).json(false);
+    }
+};
 
 // retrieve all products controller
 module.exports.getAllProducts = async (req, res) => {

routes/productRoutes.js

@@ -11,6 +11,8 @@ const {verify, verifyAdmin, verifyNonAdmin} = auth;
 // Route for creating a product
 router.post(`/create`, verify, verifyAdmin, productControllers.createProduct);
 
+// Route for check a existing product
+router.post('/check-product-existence', verify, verifyAdmin, productControllers.isProductExisting);
 
 // Route for retrieving all products
 router.get(`/all`, verify, verifyAdmin, productControllers.getAllProducts);