Partial fix for mypy issues

providers/activityrefdata/pnp_kml_activity_ref_data_provider.py

@@ -4,6 +4,9 @@ from typing import Any
 
 import requests
 from fastkml import kml
+from fastkml.containers import Document, Folder
+from fastkml.features import Placemark
+from fastkml.geometry import Point
 from pyhamtools.locator import latlong_to_locator
 
 from core.enums import ActivityRefType
@@ -26,13 +29,19 @@ class ParksNPeaksKMLActivityRefDataProvider(FileDownloadActivityRefDataProvider)
     def _http_response_to_data(self, http_response: requests.Response) -> list[ActivityRef]:
         new_data: list[ActivityRef] = []
 
-        k = kml.KML.from_string(http_response.content)
+        # KML content may carry an XML encoding declaration, which lxml's parser (used internally here) refuses to
+        # accept as a decoded str, so bytes must be passed even though the type stub only declares str.
+        k = kml.KML.from_string(http_response.content)  # type: ignore[arg-type]
 
         for document in k.features:
-            # noinspection unresolved-references
+            if not isinstance(document, Document):
+                continue
             for folder in document.features:
-                # noinspection unresolved-references
+                if not isinstance(folder, Folder):
+                    continue
                 for placemark in folder.features:
+                    if not isinstance(placemark, Placemark):
+                        continue
                     description = placemark.description or ""
                     match = self.REF_PATTERN.search(description)
                     if not match:
@@ -40,6 +49,9 @@ class ParksNPeaksKMLActivityRefDataProvider(FileDownloadActivityRefDataProvider)
                         continue
                     ref_id = match.group(0)
 
+                    if not isinstance(placemark.geometry, Point):
+                        # Not a point location (e.g. a boundary polygon) - skip it, we can't get a single lat/lon from it
+                        continue
                     longitude, latitude = placemark.geometry.x, placemark.geometry.y
 
                     ref = ActivityRef(