Issue #3364857 by JeroenT: Add default country for Geopunt provider

geocoder.module

@@ -72,3 +72,17 @@ function geocoder_geocoder_provider_info_alter(array &$plugins): void {
     return empty($plugin['handler']) || class_exists($plugin['handler']);
   });
 }
+
+/**
+ * Implements hook_geocode_country_code_alter().
+ *
+ * Geopunt only works for Belgium, but doens't include the country in the API
+ * response, which may result in unexpected behaviour e.g. Reverse geocoding
+ * and saving the result in an address field, since a country is required for
+ * address field to work.
+ */
+function geocoder_geocode_country_code_alter(string &$country_code, array $geojson_array): void {
+  if (isset($geojson_array['properties']['providedBy']) && $geojson_array['properties']['providedBy'] === 'geopunt') {
+    $country_code = 'BE';
+  }
+}