import streamlit as st

import hacks

from aggrid import aggrid
from download import download
from restapi import restapi
from utils.st_utils import get_session_id, hide_UI_elements


print(">>> start of streamlit run")


st.set_page_config(
    page_title="stand",
    page_icon="icon.png",
    layout="wide"
)

hide_UI_elements()


restapi.sid = get_session_id() # rest api needs current session ID to trigger the next rerun

changed = restapi.changed
df = restapi.data


download(df)


# if df in restapi changed, we need to reload it into aggrid.
# if df in restapi did not change, we do not reload to ensure changes in the browser persist.

response = aggrid(
    df,
    reload_data=changed
)


# if we reloaded, aggrid returns the df from before (why?), thus we do not update the restapi.
# if we did not reload, aggrid may return an updated df from an edit in the browser,
# and thus we need to update the restapi.

new_df = response["data"]
if not new_df.equals(df) and not changed:
    restapi.data = new_df


print(">>> end of streamlit run")