add geometry endpoint

src/c3nav/mapdata/api.py

@@ -348,6 +348,21 @@ class LocationViewSetBase(RetrieveModelMixin, GenericViewSet):
             editor_url=can_access_editor(request)
         ))
 
+    @action(detail=True, methods=['get'])
+    @api_etag(base_mapdata_check=True)
+    def geometry(self, request, **kwargs):
+        location = self.get_object()
+
+        if location is None:
+            raise NotFound
+
+        if isinstance(location, LocationRedirect):
+            return redirect('../' + str(location.target.pk) + '/geometry/')
+
+        return Response(location.get_geometry(
+            detailed_geometry=MapdataViewSet.can_access_geometry(request, location),
+        ))
+
 
 class LocationViewSet(LocationViewSetBase):
     """

src/c3nav/mapdata/models/base.py

@@ -42,6 +42,9 @@ class SerializableMixin(models.Model):
             ]
         }
 
+    def get_geometry(self, detailed_geometry=True):
+        return None
+
     @property
     def title(self):
         return self._meta.verbose_name + ' ' + str(self.id)

src/c3nav/mapdata/models/geometry/base.py

@@ -88,12 +88,14 @@ class GeometryMixin(SerializableMixin):
 
     def details_display(self, detailed_geometry=True, **kwargs):
         result = super().details_display(**kwargs)
-        if detailed_geometry:
-            result['geometry'] = format_geojson(smart_mapping(self.geometry), round=False)
-        else:
-            result['geometry'] = format_geojson(smart_mapping(box(*self.geometry.bounds)), round=False)
+        result['geometry'] = self.get_geometry(detailed_geometry=detailed_geometry)
         return result
 
+    def get_geometry(self, detailed_geometry=True):
+        if detailed_geometry:
+            return format_geojson(smart_mapping(self.geometry), round=False)
+        return format_geojson(smart_mapping(box(*self.geometry.bounds)), round=False)
+
     def get_shadow_geojson(self):
         pass