import gradio as gr

def chatbot_response(user_input, history=[]):
    # Simulate a bot response
    bot_reply = "This is a simulated response."

    # Update history
    history.append({"user": user_input, "bot": bot_reply})

    return bot_reply, history

# Gradio UI Setup
def gradio_interface():
    with gr.Blocks() as chatbot_ui:
        gr.Markdown("## Fake Chatbot UI")
        user_input = gr.Textbox(label="User Input", placeholder="Type your message here...", lines=2)
        chat_history = gr.Chatbot()
        send_button = gr.Button("Send")

        def respond(user_input, history):
            bot_reply, history = chatbot_response(user_input, history)
            return history, history

        send_button.click(respond, [user_input, chat_history], [chat_history, chat_history])

    chatbot_ui.launch()

gradio_interface()