app.py

import streamlit as st
import datetime
import time

def save_message(name, message):
    now = datetime.datetime.now()
    timestamp = now.strftime("%Y-%m-%d %H:%M:%S")
    with open("chat.txt", "a") as f:
        f.write(f"{timestamp} - {name}: {message}\n")

def main():
    st.title("Streamlit Chat")

    name = st.text_input("Name")
    message = st.text_input("Message")
    if st.button("Submit"):
        save_message(name, message)
        st.text("Message sent!")

    st.text("Chat history:")
    with open("chat.txt", "a+") as f:
        f.seek(0)
        chat_history = f.read()
    st.text(chat_history)

    countdown = st.empty()
    t = 60
    while t:
        mins, secs = divmod(t, 60)
        countdown.text(f"Time remaining: {mins:02d}:{secs:02d}")
        time.sleep(1)
        t -= 1
        if t == 0:
            countdown.text("Time's up!")
            with open("chat.txt", "a+") as f:
                f.seek(0)
                chat_history = f.read()
            st.text(chat_history)
            t = 60

if __name__ == "__main__":
    main()