initial commit

2026-06-18 23:45:08 +02:00
commit 3ebdc96381
104 changed files with 4778 additions and 0 deletions
--- a/api/app/services/geocoding.py
+++ b/api/app/services/geocoding.py
@@ -0,0 +1,114 @@
+from __future__ import annotations
+
+import hashlib
+from typing import Any
+
+from app.config import CACHE_TTL_GEOCODE, NOMINATIM_BASE_URL, NOMINATIM_USER_AGENT
+from app.http_client import get_client
+from app.database import get_cached_json, set_cached_json
+
+
+def _query_hash(query: str) -> str:
+    return hashlib.sha256(query.strip().lower().encode("utf-8")).hexdigest()
+
+
+async def _nominatim_get(path: str, params: dict[str, Any]) -> Any:
+    headers = {"User-Agent": NOMINATIM_USER_AGENT, "Accept-Language": "de"}
+    client = get_client()
+    response = await client.get(f"{NOMINATIM_BASE_URL}{path}", params=params, headers=headers, timeout=12.0)
+    response.raise_for_status()
+    return response.json()
+
+
+async def search_places(query: str, limit: int = 8) -> list[dict[str, Any]]:
+    if len(query.strip()) < 2:
+        return []
+
+    qhash = _query_hash(f"search:{query}:{limit}")
+    cached = await get_cached_json("geocode_cache", {"query_hash": qhash}, CACHE_TTL_GEOCODE)
+    if cached is not None:
+        return cached
+
+    raw = await _nominatim_get(
+        "/search",
+        {
+            "q": query,
+            "format": "jsonv2",
+            "addressdetails": 1,
+            "limit": limit,
+            "countrycodes": "de,at,ch",
+        },
+    )
+    results = []
+    for item in raw:
+        address = item.get("address") or {}
+        label = item.get("display_name", "")
+        place = (
+            address.get("city")
+            or address.get("town")
+            or address.get("village")
+            or address.get("municipality")
+            or address.get("county")
+            or label.split(",")[0]
+        )
+        results.append(
+            {
+                "label": label,
+                "place": place,
+                "lat": float(item["lat"]),
+                "lon": float(item["lon"]),
+                "type": item.get("type"),
+                "postcode": address.get("postcode"),
+                "county": address.get("county"),
+                "state": address.get("state"),
+            }
+        )
+
+    await set_cached_json(
+        "geocode_cache",
+        {"query_hash": qhash, "query_text": query},
+        results,
+    )
+    return results
+
+
+async def reverse_geocode(lat: float, lon: float) -> dict[str, Any]:
+    qhash = _query_hash(f"reverse:{lat:.4f}:{lon:.4f}")
+    cached = await get_cached_json("geocode_cache", {"query_hash": qhash}, CACHE_TTL_GEOCODE)
+    if cached is not None:
+        return cached
+
+    raw = await _nominatim_get(
+        "/reverse",
+        {"lat": lat, "lon": lon, "format": "jsonv2", "addressdetails": 1, "zoom": 10},
+    )
+    address = raw.get("address") or {}
+    payload = {
+        "label": raw.get("display_name"),
+        "place": address.get("city")
+        or address.get("town")
+        or address.get("village")
+        or address.get("municipality")
+        or address.get("county"),
+        "county": address.get("county"),
+        "state": address.get("state"),
+        "postcode": address.get("postcode"),
+        "admin_names": [
+            value
+            for value in [
+                address.get("city"),
+                address.get("town"),
+                address.get("village"),
+                address.get("municipality"),
+                address.get("county"),
+                address.get("state"),
+            ]
+            if value
+        ],
+    }
+    await set_cached_json(
+        "geocode_cache",
+        {"query_hash": qhash, "query_text": f"{lat},{lon}"},
+        payload,
+    )
+    return payload