feat(map): derive station regions from GPS

station-navigation/README.md

@@ -2,7 +2,7 @@
 
 面向运维和司机调度的独立公共站点导航服务，默认本地端口为 `20804`。
 
-它只调用一次上游加氢站目录接口，并通过正向字段白名单对外提供：名称、位置、省市区、地址与合作状态。车辆数据、加氢量及其他运营字段不会被加载或从这个服务的 API 返回。
+它复用运营地图已经按 GPS 逆地理解析、落盘缓存的站点目录，并只对外提供：名称、位置、省市区、地址与合作状态。车辆数据、加氢量及其他运营字段不会被加载或从这个服务的 API 返回。
 
 ## 本地运行
 
@@ -19,7 +19,7 @@ export OPEN_PLATFORM_APP_KEY='<32位AppKey>'
 - `GET /api/health`：进程健康状态；
 - 其他 `/api/*` 路由均返回 404。
 
-站点目录在服务端缓存 2 分钟，并在服务启动后后台预热；因此正常页面打开直接返回缓存数据，最多延迟 2 分钟更新一次。
+站点目录在服务端缓存 2 分钟，并在服务启动后后台预热；因此正常页面打开直接返回缓存数据，最多延迟 2 分钟更新一次。省、市、区由运营地图根据 GCJ-02 坐标调用高德逆地理服务生成，结果按坐标缓存 7 天；详细地址仍直接展示资产原始字段。
 
 ## ECS 部署
 

station-navigation/server.py

@@ -28,6 +28,7 @@ OPEN_PLATFORM_BASE_URL = os.getenv("OPEN_PLATFORM_BASE_URL", "https://open.d.lno
 OPEN_PLATFORM_APP_KEY = os.getenv("OPEN_PLATFORM_APP_KEY", "").strip()
 UPSTREAM_TIMEOUT_SECONDS = float(os.getenv("UPSTREAM_TIMEOUT_SECONDS", "15"))
 STATION_CACHE_SECONDS = int(os.getenv("STATION_NAVIGATION_CACHE_SECONDS", "120"))
+VEHICLE_MAP_INTERNAL_BASE_URL = os.getenv("VEHICLE_MAP_INTERNAL_BASE_URL", "http://127.0.0.1:20800").rstrip("/")
 _cache_lock = threading.Lock()
 _cache = {}
 
@@ -91,27 +92,24 @@ def _cached(key, ttl_seconds, loader):
     return value
 
 
-def _public_station(station):
-    """Positive allowlist: do not add operational or hydrogen fields here."""
-    fields = (
-        "id", "name", "shortName", "province", "city", "district", "address",
-        "longitude", "latitude", "cooperative",
-    )
-    return {field: station.get(field) for field in fields if station.get(field) is not None}
-
-
 def _load_station_directory():
-    stations = _post_open_platform("/api/v1/hydrogen-stations/query", {})
-    directory = [_public_station(station) for station in stations]
-    return {
-        "status": "ok",
-        "asOf": time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()),
-        "summary": {
-            "totalStations": len(directory),
-            "cooperativeStations": sum(1 for station in directory if station.get("cooperative")),
-        },
-        "stations": directory,
-    }
+    """Use the operations map's GPS-resolved public station directory.
+
+    The map service owns reverse-geocoding and its persistent cache, keeping
+    the public navigation view and the operations view on identical boundaries.
+    """
+    request = Request(
+        VEHICLE_MAP_INTERNAL_BASE_URL + "/api/stations",
+        headers={"Accept": "application/json", "User-Agent": "lingniu-station-navigation/1.0"},
+    )
+    try:
+        with urlopen(request, timeout=UPSTREAM_TIMEOUT_SECONDS) as response:
+            payload = json.load(response)
+    except (HTTPError, URLError, ValueError) as exc:
+        raise RuntimeError("vehicle map station directory unavailable: {}".format(exc)) from exc
+    if payload.get("status") != "ok" or not isinstance(payload.get("stations"), list):
+        raise RuntimeError("vehicle map returned an invalid station directory")
+    return payload
 
 
 def _prewarm_station_directory_cache():

station-navigation/tests/test_server.py

@@ -1,4 +1,6 @@
 import importlib.util
+import io
+import json
 from pathlib import Path
 import unittest
 from unittest.mock import patch
@@ -11,21 +13,24 @@ SPEC.loader.exec_module(server)
 
 class StationNavigationTest(unittest.TestCase):
     def test_directory_is_a_positive_allowlist_without_hydrogen_data(self):
-        source = [{
+        source = {
+            "status": "ok",
+            "asOf": "2026-08-12 12:00:00",
+            "summary": {"totalStations": 1, "cooperativeStations": 1},
+            "stations": [{
             "id": "GD-1", "name": "广州合作站", "province": "广东省", "city": "广州市",
             "district": "黄埔区", "address": "开源大道1号", "longitude": 113.2, "latitude": 23.1,
-            "cooperative": True, "monthlyHydrogenKg": 88.8, "totalHydrogenKg": 999.9,
-            "vehicleCount": 20,
-        }]
-        with patch.object(server, "_post_open_platform", return_value=source):
+            "cooperative": True,
+            }],
+        }
+        with patch.object(server, "urlopen", return_value=io.BytesIO(json.dumps(source).encode("utf-8"))):
             result = server._load_station_directory()
 
         self.assertEqual(result["summary"], {"totalStations": 1, "cooperativeStations": 1})
         station = result["stations"][0]
         self.assertEqual(station["name"], "广州合作站")
-        self.assertNotIn("monthlyHydrogenKg", station)
-        self.assertNotIn("totalHydrogenKg", station)
-        self.assertNotIn("vehicleCount", station)
+        self.assertEqual(station["province"], "广东省")
+        self.assertEqual(server.VEHICLE_MAP_INTERNAL_BASE_URL, "http://127.0.0.1:20800")
 
     def test_static_assets_are_fingerprinted(self):
         self.assertRegex(server.STATIC_ASSET_VERSION, r"^[0-9a-f]{16}$")