Check QGIS >= 3.37 to subclass profile sources (before that version, …

…even if we can subclass it, we won't be able to register it anyways); handle exceptions when reading service responses

swiss_locator/core/profiles/profile_generator.py

@@ -64,7 +64,14 @@ def url_with_param(url, params) -> str:
             result = {"error": reply.errorString()}
         else:
             content = reply.content()
-            result = json.loads(str(content, 'utf-8'))
+            try:
+                result = json.loads(str(content, 'utf-8'))
+            except json.decoder.JSONDecodeError as e:
+                QgsMessageLog.logMessage(
+                    "Unable to parse results from Profile service. Details: {}".format(e.msg),
+                    "Swiss locator",
+                    Qgis.Critical
+                )
 
         return result
 

swiss_locator/swiss_locator_plugin.py

@@ -33,7 +33,11 @@
     SwissLocatorFilterLocation,
 )
 from swiss_locator.core.filters.swiss_locator_filter_wmts import SwissLocatorFilterWMTS
-from swiss_locator.core.profiles.profile_generator import SwissProfileSource
+try:
+    from swiss_locator.core.profiles.profile_generator import SwissProfileSource
+except ImportError:
+    # Should fail only for QGIS < 3.26, where profiles weren't available
+    SwissProfileSource = None
 
 
 class SwissLocatorPlugin:
@@ -50,7 +54,10 @@ def __init__(self, iface: QgisInterface):
         QCoreApplication.installTranslator(self.translator)
 
         self.locator_filters = []
-        self.profile_source = SwissProfileSource()
+
+        if Qgis.QGIS_VERSION_INT >= 33700:
+            # Only on QGIS 3.37+ we'll be able to register profile sources
+            self.profile_source = SwissProfileSource()
 
     def initGui(self):
         for _filter in (