import streamlit as st
import os

st.subheader(f"Streamlit app main page.")
try:
    user = st.experimental_user.user_name
except AttributeError:
    user = "user"
st.write(f"Hello {user}! Please choose appropriate option from left to continue.")


env = os.getenv('target', 'prod')
if env == 'qa':
    st.write("NB! This is QA/DEVELOPMENT version of this tool.")
else:
    st.caption("NB! This is PROD version of this tool.")