import streamlit as st
import random
import time

st.title("💬 Simple Chatbot")

# Initialize chat history
if "messages" not in st.session_state:
    st.session_state.messages = []

# Display chat messages from history on app rerun
for message in st.session_state.messages:
    with st.chat_message(message["role"]):
        st.markdown(message["content"])

# Accept user input
if prompt := st.chat_input("Type your message..."):
    # Add user message to chat history
    st.session_state.messages.append({"role": "user", "content": prompt})
    # Display user message in chat message container
    with st.chat_message("user"):
        st.markdown(prompt)

    # Generate a simple response
    responses = [
        "Interesting! Tell me more.",
        "I see. Could you elaborate?",
        "That’s a great point!",
        "Thanks for sharing that with me.",
        "Could you clarify what you mean?",
    ]
    response = random.choice(responses)

    # Simulate a short delay
    time.sleep(0.5)

    # Display assistant response in chat message container
    with st.chat_message("assistant"):
        st.markdown(response)
    # Add assistant response to chat history
    st.session_state.messages.append({"role": "assistant", "content": response})