Update app.py

app.py

@@ -1,5 +1,4 @@
 import gradio as gr
-from cart_tab import add_to_cart, display_cart
 
 # Global variables for cart and menu data
 cart = []
@@ -84,9 +83,11 @@ popup_js = """
         document.getElementById("overlay").style.display = "none";
     }
 
-    function addToCart(name) {
-        google.colab.kernel.invokeFunction('notebook.add_to_cart', [name], {});
-        closePopup(); // Automatically close the popup
+    async function addToCart(name) {
+        // Call the Gradio backend function to add item to the cart
+        const response = await google.colab.kernel.invokeFunction('notebook.add_to_cart', [name], {});
+        alert(response.data); // Show a success message
+        closePopup(); // Close the popup
     }
 </script>
 """