Update app.py

app.py

@@ -284,6 +284,23 @@ button {
         alert("Your final order has been submitted!");
     }
 </script>
+def authenticate_user(email, password):
+    if check_credentials(email, password):
+        return gr.update(visible=False), gr.update(visible=True), ""
+    else:
+        return gr.update(visible=True), gr.update(visible=False), "Invalid email or password. Try again."
+
+def navigate_to_signup():
+    return gr.update(visible=False), gr.update(visible=True)
+
+def create_account(name, phone, email, password):
+    if save_user(name, phone, email, password):
+        return "Account created successfully! You can now log in.", gr.update(visible=True), gr.update(visible=False)
+    else:
+        return "Email already exists. Try logging in.", gr.update(visible=False), gr.update(visible=True)
+
+def navigate_to_login():
+    return gr.update(visible=True), gr.update(visible=False)
 # Modal HTML Content
 MODAL_HTML = """
 <div id="modal" style="display: none; position: fixed; background: white; border-radius: 8px; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); padding: 20px; z-index: 1000;">