Full-UK dump: return every station with all prices; radius/limit optional (alert path only)

app/main.py

@@ -256,8 +256,8 @@ def stations(
     fuel: str = Query("e10", description="Fuel grade: e10, e5, diesel"),
     lat: Optional[float] = Query(None, description="User latitude"),
     lng: Optional[float] = Query(None, description="User longitude"),
-    radius: float = Query(20.0, description="Search radius in km"),
-    limit: int = Query(10, ge=1, le=1000),
+    radius: Optional[float] = Query(None, description="Search radius in km (optional; omit for the full dataset)"),
+    limit: int = Query(10000, ge=1, le=10000),
 ):
     if _state["stations"] is None:
         raise HTTPException(status_code=502, detail="No data cached yet and upstream fetch failed")
@@ -268,18 +268,18 @@ def stations(
 
     rows = []
     for station in _stations_list():
-        price = _fuel_price(station, fuel)
-        if price is None:
-            continue
         s_lat = station.get("latitude", station.get("lat"))
         s_lng = station.get("longitude", station.get("lng"))
         # All known fuel grades for this station (E5/E10/DIESEL) so clients can
-        # switch fuel tabs without another request.
+        # switch fuel tabs without another request. Every station is returned
+        # regardless of the requested fuel — clients filter on-device.
         prices = {}
         for grade in ("E5", "E10", "DIESEL"):
             p = _fuel_price(station, grade)
             if p is not None:
                 prices[grade] = p
+        if not prices:
+            continue  # station sells nothing we track — skip
         item = {
             "id": station.get("id") or station.get("station_id"),
             "name": station.get("name") or station.get("station_name"),
@@ -288,7 +288,7 @@ def stations(
             "postcode": station.get("postcode") or "",
             "lat": s_lat,
             "lng": s_lng,
-            "price": price,
+            "price": prices.get(fuel.upper()),
             "prices": prices,
             "price_updated": station.get("price_updated") or station.get("updated_at"),
         }
@@ -297,10 +297,13 @@ def stations(
         rows.append(item)
 
     if lat is not None and lng is not None:
-        rows = [r for r in rows if r.get("distance_km") is not None and r["distance_km"] <= radius]
-        rows.sort(key=lambda r: r["distance_km"])
+        # Optional server-side radius filter — used by the alert path for a
+        # focused fresh fetch. The main app fetch omits radius and gets all.
+        if radius is not None:
+            rows = [r for r in rows if r.get("distance_km") is not None and r["distance_km"] <= radius]
+        rows.sort(key=lambda r: r.get("distance_km") if r.get("distance_km") is not None else float("inf"))
     else:
-        rows.sort(key=lambda r: r["price"])
+        rows.sort(key=lambda r: r["price"] if r["price"] is not None else float("inf"))
 
     return {"fuel": fuel, "count": len(rows[:limit]), "stations": rows[:limit]}