Add POI feature and imporve the overall backend implementation

services/forecasting/app/services/forecasting_service.py

@@ -880,6 +880,9 @@ class EnhancedForecastingService:
         request: ForecastRequest
     ) -> Dict[str, Any]:
         """Prepare features with comprehensive fallbacks"""
+        # Check for school holidays using external service
+        is_holiday = await self._check_holiday(tenant_id, request.forecast_date)
+
         features = {
             "date": request.forecast_date.isoformat(),
             "day_of_week": request.forecast_date.weekday(),
@@ -889,7 +892,7 @@ class EnhancedForecastingService:
             "quarter": (request.forecast_date.month - 1) // 3 + 1,
             "week_of_year": request.forecast_date.isocalendar().week,
             "season": self._get_season(request.forecast_date.month),
-            "is_holiday": self._is_spanish_holiday(request.forecast_date),
+            "is_holiday": is_holiday,
             # CRITICAL FIX: Add tenant_id and inventory_product_id for historical feature enrichment
             "tenant_id": tenant_id,
             "inventory_product_id": request.inventory_product_id,
@@ -977,6 +980,9 @@ class EnhancedForecastingService:
         weather_map: Dict[str, Any]
     ) -> Dict[str, Any]:
         """Prepare features with comprehensive fallbacks using a pre-fetched weather map"""
+        # Check for holidays using external service
+        is_holiday = await self._check_holiday(tenant_id, request.forecast_date)
+
         features = {
             "date": request.forecast_date.isoformat(),
             "day_of_week": request.forecast_date.weekday(),
@@ -986,7 +992,7 @@ class EnhancedForecastingService:
             "quarter": (request.forecast_date.month - 1) // 3 + 1,
             "week_of_year": request.forecast_date.isocalendar().week,
             "season": self._get_season(request.forecast_date.month),
-            "is_holiday": self._is_spanish_holiday(request.forecast_date),
+            "is_holiday": is_holiday,
             # CRITICAL FIX: Add tenant_id and inventory_product_id for historical feature enrichment
             "tenant_id": tenant_id,
             "inventory_product_id": request.inventory_product_id,
@@ -1041,11 +1047,44 @@ class EnhancedForecastingService:
         else:
             return 4  # Autumn
     
-    def _is_spanish_holiday(self, date_obj: date) -> bool:
-        """Check if a date is a major Spanish holiday"""
+    async def _check_holiday(self, tenant_id: str, date_obj: date) -> bool:
+        """
+        Check if a date is a holiday using external service calendar
+
+        Falls back to Spanish national holidays if:
+        - Tenant has no calendar configured
+        - External service is unavailable
+        """
+        try:
+            # Get tenant's calendar ID
+            calendar_id = await self.data_client.get_tenant_calendar(tenant_id)
+
+            if calendar_id:
+                # Check school holiday via external service
+                is_school_holiday = await self.data_client.check_school_holiday(
+                    calendar_id=calendar_id,
+                    check_date=date_obj.isoformat(),
+                    tenant_id=tenant_id
+                )
+                return is_school_holiday
+            else:
+                # Fallback to Spanish national holidays
+                return self._is_spanish_national_holiday(date_obj)
+
+        except Exception as e:
+            logger.warning(
+                "Holiday check failed, falling back to national holidays",
+                error=str(e),
+                tenant_id=tenant_id,
+                date=date_obj.isoformat()
+            )
+            return self._is_spanish_national_holiday(date_obj)
+
+    def _is_spanish_national_holiday(self, date_obj: date) -> bool:
+        """Check if a date is a major Spanish national holiday (fallback)"""
         month_day = (date_obj.month, date_obj.day)
         spanish_holidays = [
-            (1, 1), (1, 6), (5, 1), (8, 15), (10, 12), 
+            (1, 1), (1, 6), (5, 1), (8, 15), (10, 12),
             (11, 1), (12, 6), (12, 8), (12, 25)
         ]
         return month_day in spanish_holidays