REFACTOR external service and improve websocket training

services/external/app/schemas/city_data.py

@@ -0,0 +1,36 @@
+# services/external/app/schemas/city_data.py
+"""
+City Data Schemas - New response types for city-based operations
+"""
+
+from pydantic import BaseModel, Field
+from typing import Optional
+
+
+class CityInfoResponse(BaseModel):
+    """Information about a supported city"""
+    city_id: str
+    name: str
+    country: str
+    latitude: float
+    longitude: float
+    radius_km: float
+    weather_provider: str
+    traffic_provider: str
+    enabled: bool
+
+
+class DataAvailabilityResponse(BaseModel):
+    """Data availability for a city"""
+    city_id: str
+    city_name: str
+
+    weather_available: bool
+    weather_start_date: Optional[str] = None
+    weather_end_date: Optional[str] = None
+    weather_record_count: int = 0
+
+    traffic_available: bool
+    traffic_start_date: Optional[str] = None
+    traffic_end_date: Optional[str] = None
+    traffic_record_count: int = 0