rene/banyaro
1
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fix: Wetter-Alarm standortbezogen statt 5-Städte-Maximum — Abonnenten nach Standort clustern, lokale Tagesprognose, nur lokal warnen

Browse source
This commit is contained in:
rene 2026-05-29 09:37:48 +02:00
parent cad34711b7
commit 8c2bc0c445
2 changed files with 82 additions and 87 deletions
Download patch file Download diff file Expand all files Collapse all files

76
backend/weather.py
View file

@ -1,6 +1,6 @@
"""
BAN YARO — Wetter via Open-Meteo
- get_weather_summary(): Push-Job, prüft 5 deutsche Städte
- get_day_alert(): standortbezogener Wetter-Alarm-Push (Hitze/Gewitter)
- get_weather_for_location(): API-Endpoint, beliebiger Standort mit TTL-Cache
"""
@ -158,67 +158,37 @@ async def get_weather_for_location(lat: float, lon: float) -> dict:
_location_cache[key] = (now, data)
return data
# 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:
async def get_day_alert(lat: float, lon: float) -> dict:
"""
Holt Tagesprognose für mehrere deutsche Städte von Open-Meteo.
Gibt zurück: {"max_temp_c": float, "thunderstorm": bool}
Tagesprognose (heute) für EINEN Standort — Grundlage für den
standortbezogenen Wetter-Alarm-Push (Hitze / Gewitter).
Gibt zurück: {"max_temp_c": float|None, "thunderstorm": bool}
"""
max_temp = -999.0
thunderstorm = False
url = (
"https://api.open-meteo.com/v1/forecast"
f"?latitude={lat}&longitude={lon}"
"&daily=temperature_2m_max,precipitation_probability_max,weathercode"
"&timezone=Europe%2FBerlin&forecast_days=1"
)
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()
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])
daily = data.get("daily", {})
temp = (daily.get("temperature_2m_max") or [None])[0]
precip_prob = (daily.get("precipitation_probability_max") or [None])[0]
weathercode = (daily.get("weathercode") or [None])[0]
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}
thunderstorm = (
precip_prob is not None and precip_prob > 50
and weathercode is not None and int(weathercode) in THUNDERSTORM_CODES
)
return {"max_temp_c": temp, "thunderstorm": thunderstorm}
# ---------------------------------------------------------------------------