"""
BAN YARO — Wetter-Zusammenfassung via Open-Meteo
Prüft mehrere deutsche Städte und liefert max. Temperatur und Gewitterwarnung.
"""

import logging
import httpx

logger = logging.getLogger(__name__)

# Wichtige deutsche Städte als Stichprobe
CITIES = [
    {"name": "Berlin",    "lat": 52.52, "lon": 13.41},
    {"name": "München",   "lat": 48.14, "lon": 11.58},
    {"name": "Hamburg",   "lat": 53.55, "lon": 10.00},
    {"name": "Frankfurt", "lat": 50.11, "lon":  8.68},
    {"name": "Köln",      "lat": 50.94, "lon":  6.96},
]

# WMO-Wettercodes 95–99 = Gewitter
THUNDERSTORM_CODES = {95, 96, 99}


async def get_weather_summary() -> dict:
    """
    Holt Tagesprognose für mehrere deutsche Städte von Open-Meteo.
    Gibt zurück: {"max_temp_c": float, "thunderstorm": bool}
    """
    max_temp = -999.0
    thunderstorm = False

    async with httpx.AsyncClient(timeout=10.0) as client:
        for city in CITIES:
            url = (
                "https://api.open-meteo.com/v1/forecast"
                f"?latitude={city['lat']}&longitude={city['lon']}"
                "&daily=temperature_2m_max,precipitation_probability_max,weathercode"
                "&timezone=Europe%2FBerlin&forecast_days=1"
            )
            try:
                resp = await client.get(url)
                resp.raise_for_status()
                data = resp.json()

                daily = data.get("daily", {})
                temps = daily.get("temperature_2m_max", [None])
                precip_probs = daily.get("precipitation_probability_max", [None])
                weathercodes = daily.get("weathercode", [None])

                temp = temps[0] if temps else None
                precip_prob = precip_probs[0] if precip_probs else None
                weathercode = weathercodes[0] if weathercodes else None

                if temp is not None and temp > max_temp:
                    max_temp = temp

                if (
                    precip_prob is not None and precip_prob > 50
                    and weathercode is not None and int(weathercode) in THUNDERSTORM_CODES
                ):
                    thunderstorm = True
                    logger.info(f"Gewitter erkannt: {city['name']} (Code {weathercode}, {precip_prob}% Niederschlag)")

            except Exception as e:
                logger.warning(f"Wetter-Abruf für {city['name']} fehlgeschlagen: {e}")

    if max_temp == -999.0:
        max_temp = 0.0

    logger.info(f"Wetter-Zusammenfassung: max_temp={max_temp}°C, thunderstorm={thunderstorm}")
    return {"max_temp_c": max_temp, "thunderstorm": thunderstorm}