44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
"""BAN YARO — Nearby Alerts (Giftköder + Vermisste Hunde)"""
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import math
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from datetime import datetime
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from fastapi import APIRouter, Depends
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from database import db
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from auth import get_current_user_optional as get_optional_user
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router = APIRouter()
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_RADIUS_M = 20_000 # 20 km
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def _haversine(lat1: float, lon1: float, lat2: float, lon2: float) -> float:
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R = 6_371_000
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p1, p2 = math.radians(lat1), math.radians(lat2)
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dp = math.radians(lat2 - lat1)
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dl = math.radians(lon2 - lon1)
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a = math.sin(dp / 2) ** 2 + math.cos(p1) * math.cos(p2) * math.sin(dl / 2) ** 2
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return 2 * R * math.asin(math.sqrt(a))
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@router.get("")
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async def nearby_alerts(lat: float, lon: float, user=Depends(get_optional_user)):
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now = datetime.utcnow().isoformat()
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with db() as conn:
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poisons = conn.execute(
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"SELECT lat, lon FROM poison WHERE geloest=0 AND expires_at > ?", (now,)
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).fetchall()
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lost = conn.execute(
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"SELECT lat, lon FROM lost_dogs WHERE is_active=1"
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).fetchall()
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# Letzten Standort des Users für geo-basierte Push-Filter speichern
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if user:
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conn.execute(
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"""UPDATE push_subscriptions SET last_lat=?, last_lon=?
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WHERE user_id=?""",
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(lat, lon, user["id"])
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)
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has_poison = any(_haversine(lat, lon, r["lat"], r["lon"]) <= _RADIUS_M for r in poisons)
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has_lost = any(_haversine(lat, lon, r["lat"], r["lon"]) <= _RADIUS_M for r in lost)
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return {"poison": has_poison, "lost": has_lost}
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