Speed up scheduling of visits suggestions job after import

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Stats will now properly reflect countries and cities visited after importing new points.
 - `GET /api/v1/points will now return correct latitude and longitude values. #1502
 - Deleting an import will now trigger stats recalculation for affected months. #1789
+- Importing process should now schedule visits suggestions job a lot faster.
 
 ## Changed
 

app/services/imports/create.rb

@@ -78,12 +78,11 @@ class Imports::Create
   def schedule_visit_suggesting(user_id, import)
     return unless user.safe_settings.visits_suggestions_enabled?
 
-    points = import.points.order(:timestamp)
+    min_max = import.points.pluck('MIN(timestamp), MAX(timestamp)').first
+    return if min_max.compact.empty?
 
-    return if points.none?
-
-    start_at = Time.zone.at(points.first.timestamp)
-    end_at = Time.zone.at(points.last.timestamp)
+    start_at = Time.zone.at(min_max[0])
+    end_at = Time.zone.at(min_max[1])
 
     VisitSuggestingJob.perform_later(user_id:, start_at:, end_at:)
   end