Code Editor for app.py

import streamlit as st
import random
import time

# Streamed response emulator
def response_generator():
    responses = [
        "Hello there! How can I assist you today?",
        "Hi, human! Is there anything I can help you with?",
        "Do you need help?",
    ]
    response = random.choice(responses)
    for word in response.split():
        yield word + " "
        time.sleep(0.05)

st.title("Chat Application")

# Sidebar for chat list
with st.sidebar:
    st.header("Chat List")
    chat_titles = ["Chat 1", "Chat 2", "Chat 3"]
    selected_chat = st.selectbox("Select a chat:", chat_titles)

# 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("What do you want to say?"):
    # 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)

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