add application files

app.py

@@ -20,6 +20,14 @@ bot = Controller()
 def chatbot_interface(user_input, chat_id=2311):
     return bot.handle_message(chat_id, user_input)
 
+# Validation function for user inputs
+def validate_input(user_input):
+    if not user_input or user_input.strip() == "":
+        return False, "🚫 Please enter a valid legal question. It cannot be empty."
+    if len(user_input) < 5:
+        return False, "⚠️ Your question is too short. Please provide more details."
+    return True, None
+
 # Custom CSS to load and apply Vazir font
 custom_css = """
 @font-face {
@@ -59,6 +67,14 @@ with gr.Blocks(css=custom_css) as interface:
     # Chat update function to append new messages to the chatbot
     def chat_update(user_message, history):
         history = history or []
+        
+        # Validate user input
+        is_valid, validation_message = validate_input(user_message)
+        if not is_valid:
+            history.append(("User", validation_message))
+            return history, ""
+
+        # If valid, proceed with bot reply
         bot_reply = chatbot_interface(user_message)
         history.append((user_message, bot_reply))
         return history, ""
@@ -67,4 +83,4 @@ with gr.Blocks(css=custom_css) as interface:
     send_button.click(chat_update, [user_input, chatbot], [chatbot, user_input])
 
 # Launch the Gradio interface with a public shareable link
-interface.launch()
+interface.launch()