[importers] Fix setting timezones before all imports

vrobbler/apps/profiles/models.py

@@ -115,6 +115,28 @@ class UserProfile(TimeStampedModel):
 
         return timestamp.replace(tzinfo=timezone)
 
+    def adjust_timezone_of_scrobbles(self, commit=False):
+        current_dt = None
+        scrobbles_to_change_qs_list = []
+        for boundry_dt in self.historic_timezone_changes:
+            if current_dt and boundry_dt:
+                logger.info(
+                    f"Checking for scrobbles between {current_dt} and {boundry_dt} to update to {current_dt.tzinfo.name}"
+                )
+                scrobbles = self.user.scrobble_set.filter(
+                    timestamp__gte=current_dt,
+                    timestamp__lt=boundry_dt,
+                ).exclude(timezone=current_dt.tzinfo.name)
+                scrobbles_to_change_qs_list.append(scrobbles)
+                logger.info(
+                    f"Updating {scrobbles.count()} scrobble timezones to {current_dt.tzinfo.name}"
+                )
+                if commit:
+                    scrobbles.update(timezone=current_dt.tzinfo.name)
+
+            current_dt = boundry_dt
+        return scrobbles_to_change_qs_list
+
     @cached_property
     def task_context_tags(self) -> list[str]:
         tag_list = [