added vegetation

api/app/services/status.py

@@ -0,0 +1,35 @@
+from sqlalchemy import text
+from sqlalchemy.exc import SQLAlchemyError
+from sqlalchemy.orm import Session
+
+from app.config import get_settings
+from app.core.raster_sampling import raster_files
+from app.models.status import DataStatusResponse, PostgisStatus, RasterStatus
+
+
+def data_status(db: Session) -> DataStatusResponse:
+    settings = get_settings()
+    return DataStatusResponse(
+        dem=_raster_status(settings.dem_path),
+        landcover=_raster_status(settings.landcover_path),
+        canopy=_raster_status(settings.canopy_path),
+        postgis=_postgis_status(db),
+    )
+
+
+def _raster_status(path: object) -> RasterStatus:
+    files = raster_files(path)
+    return RasterStatus(
+        configured=bool(files),
+        path=str(path),
+        files_count=len(files),
+    )
+
+
+def _postgis_status(db: Session) -> PostgisStatus:
+    try:
+        buildings_count = db.execute(text("SELECT count(*) FROM buildings")).scalar_one()
+    except SQLAlchemyError as exc:
+        db.rollback()
+        return PostgisStatus(configured=False, error=str(exc))
+    return PostgisStatus(configured=True, buildings_count=int(buildings_count))