import streamlit as st
from openai import OpenAI

st.set_page_config(
    page_title="ChatGPT"
)

st.title("ChatGPT Showcase")
st.session_state.API_key = st.sidebar.text_input("Insert your openAI API key here")

client = OpenAI(api_key=st.session_state.API_key)

if "openai_model" not in st.session_state:
    st.session_state["openai_model"] = "gpt-3.5-turbo"

if "GPTmessages" not in st.session_state:
    st.session_state.GPTmessages = []

if "API_key" not in st.session_state:
    st.session_state.API_key = None

if st.session_state.API_key:
    for message in st.session_state.GPTmessages:
        with st.chat_message(message["role"]):
            st.markdown(message["content"])

    if prompt := st.chat_input("What is up?"):
        st.session_state.GPTmessages.append({"role": "user", "content": prompt})
        with st.chat_message("user"):
            st.markdown(prompt)

        with st.chat_message("assistant"):
            stream = client.chat.completions.create(
                model=st.session_state["openai_model"],
                messages=[
                    {"role": m["role"], "content": m["content"]}
                    for m in st.session_state.GPTmessages
                ],
                stream=True,
            )
            response = st.write_stream(stream)
        st.session_state.GPTmessages.append({"role": "assistant", "content": response})