import plotly.graph_objects as go
import requests
import streamlit as st

from auth import require_auth
from data_processing import TARGET_HIGH, TARGET_LOW
from nightscout_client import NightscoutConfigError
from reporting import agp_percentile_bands
from ui_common import (
    add_threshold_lines,
    get_colors,
    hex_to_rgba,
    load_range_data,
    render_completeness_warning,
    select_period_days,
)

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

st.title("AGP profiel")
st.caption(
    "Percentielgrafiek over een samengesteld 24-uursbeeld (FR3) — de 5e/25e/50e/75e/"
    "95e percentiel van alle metingen op elk tijdstip van de dag in de gekozen periode."
)

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)

bands = agp_percentile_bands(glucose, bin_minutes=30)
colors = get_colors()

hours = bands["minute_of_day"] / 60

fig = go.Figure()
fig.add_hrect(y0=TARGET_LOW, y1=TARGET_HIGH, fillcolor=colors["band"], line_width=0, layer="below")

# 5e-95e percentiel als brede, lichte band.
fig.add_trace(
    go.Scatter(x=hours, y=bands["p95"], mode="lines", line={"width": 0}, showlegend=False, hoverinfo="skip")
)
fig.add_trace(
    go.Scatter(
        x=hours,
        y=bands["p5"],
        mode="lines",
        line={"width": 0},
        fill="tonexty",
        fillcolor=colors["band"],
        name="5e-95e percentiel",
        hoverinfo="skip",
    )
)
# 25e-75e percentiel als smallere, donkerdere band.
fig.add_trace(
    go.Scatter(x=hours, y=bands["p75"], mode="lines", line={"width": 0}, showlegend=False, hoverinfo="skip")
)
fig.add_trace(
    go.Scatter(
        x=hours,
        y=bands["p25"],
        mode="lines",
        line={"width": 0},
        fill="tonexty",
        fillcolor=hex_to_rgba(colors["glucose"], 0.3),
        name="25e-75e percentiel",
        hoverinfo="skip",
    )
)
# Mediaan.
fig.add_trace(
    go.Scatter(
        x=hours,
        y=bands["p50"],
        mode="lines",
        line={"color": colors["glucose"], "width": 2},
        name="Mediaan",
        hovertemplate="%{x:.0f}u · %{y:.1f} mmol/L<extra></extra>",
    )
)

fig.update_layout(
    paper_bgcolor="rgba(0,0,0,0)",
    plot_bgcolor="rgba(0,0,0,0)",
    font_color=colors["text"],
    legend={"orientation": "h", "yanchor": "bottom", "y": 1.02, "xanchor": "left", "x": 0},
    margin={"l": 10, "r": 10, "t": 10, "b": 10},
    height=480,
    yaxis={"title": "mmol/L", "gridcolor": colors["grid"], "zeroline": False},
    xaxis={"title": "Uur van de dag", "gridcolor": colors["grid"], "tickmode": "linear", "dtick": 2},
)
add_threshold_lines(fig, colors)
st.plotly_chart(fig, width="stretch")
st.caption(
    f"Periode: {start.strftime('%d-%m-%Y')} t/m {end.strftime('%d-%m-%Y')} ({len(glucose)} metingen)"
)