app.py

import gradio as gr

with gr.Blocks() as demo:
    history = gr.State([])
    user_question = gr.State("")
    output_file_name = "chat_history.json"
    
    def slow_echo(message, history):
        for i in range(len(message)):
            yield "You typed: " + message[: i+1]

    def generate_json(history):
        pass
        
    chatbox = gr.ChatInterface(
        fn=slow_echo,
        examples=["How can I help you?"],
        title="Title Here",
        description="Description for the task",
        submit_btn="Enter",
        stop_btn="Stop generating",
        retry_btn="Regenerate",
        undo_btn="Undo last message",
        clear_btn="Start a new conversation"
    )
    chatbox.queue()

    json_gen_btn = gr.Button("📩 Download the JSON file for your chat history!")
    chat_history_json = []
    json_gen_btn.click(fn=generate_json, inputs=history, outputs=chat_history_json)

demo.queue()
demo.launch()