import requests
import streamlit as st

from auth import require_auth
from nightscout_client import NightscoutConfigError
from reporting import LOW, VERY_LOW
from ui_common import (
    get_colors,
    load_range_data,
    render_completeness_warning,
    render_event_level,
    select_period_days,
)

st.set_page_config(page_title="Glucose dashboard — Hypo events", page_icon="📊", layout="wide")
require_auth()

st.title("Hypo events")
st.caption(
    "Detectie van hypoglykemie-events volgens de persistentieregel (FR5): een event "
    "telt pas na >=15 minuten ononderbroken onder de drempel, en eindigt pas na "
    ">=15 minuten ononderbroken herstel."
)

start, end, days = select_period_days(default_label="90 dagen")

try:
    glucose, _treatments = load_range_data(start, end)
except NightscoutConfigError as exc:
    st.error(str(exc))
    st.stop()
except (requests.RequestException, ValueError) as exc:
    st.error(f"Kon geen data ophalen van Nightscout: {exc}")
    st.stop()

if glucose.empty:
    st.info("Geen glucosemetingen gevonden in deze periode.")
    st.stop()

render_completeness_warning(glucose, start, end)

colors = get_colors()

render_event_level(glucose, LOW, "below", f"Level 1 (<{LOW} mmol/L)", days, colors)
st.divider()
render_event_level(glucose, VERY_LOW, "below", f"Level 2 (<{VERY_LOW} mmol/L)", days, colors)

st.caption(f"Periode: {start.strftime('%d-%m-%Y')} t/m {end.strftime('%d-%m-%Y')}")