@mytec: 1.4iter ready for testing

backend/app/services/buildings_service.py

@@ -15,6 +15,8 @@ class Building(BaseModel):
     height: float  # meters
     levels: Optional[int] = None
     building_type: Optional[str] = None
+    material: Optional[str] = None  # Detected material type
+    tags: dict = {}  # Store all OSM tags for material detection
 
 
 class BuildingsService:
@@ -144,12 +146,21 @@ class BuildingsService:
             # Estimate height
             height = self._estimate_height(tags)
 
+            # Detect material from tags
+            material_str = None
+            if "building:material" in tags:
+                material_str = tags["building:material"]
+            elif "building:facade:material" in tags:
+                material_str = tags["building:facade:material"]
+
             buildings.append(Building(
                 id=element["id"],
                 geometry=geometry,
                 height=height,
                 levels=int(tags.get("building:levels", 0)) or None,
-                building_type=tags.get("building")
+                building_type=tags.get("building"),
+                material=material_str,
+                tags=tags
             ))
 
         return buildings