FIX: Only enqueue fast-track gist for hot hot hot topics

Author: xfalcox

lib/summarization/entry_point.rb

@@ -48,8 +48,17 @@ def inject_into(plugin)
         # instead of using a scheduled job.
         plugin.on(:topic_hot_scores_updated) { Jobs.enqueue(:hot_topics_gist_batch) }
 
+        # As this event can be triggered quite often, let's be overly cautious enqueueing
+        # jobs if the feature is disabled.
         plugin.on(:post_created) do |post|
-          Jobs.enqueue(:update_hot_topic_gist, topic_id: post&.topic_id)
+          if SiteSetting.discourse_ai_enabled && SiteSetting.ai_summarization_enabled &&
+               SiteSetting.ai_summarize_max_hot_topics_gists_per_batch > 0 && post.topic
+            hot_score = TopicHotScore.find_by(topic: post.topic)
+
+            if hot_score.exists? && hot_score.updated_at > 1.day.ago
+              Jobs.enqueue(:update_hot_topic_gist, topic_id: post&.topic_id)
+            end
+          end
         end
       end
     end