Only generate summaries when there is enough activity

app/models/period_highlights.rb

@@ -6,14 +6,14 @@ class PeriodHighlights < ApplicationRecord
 
     def for(collections, starts_at:, duration: 1.week)
       period = Period.new(collections, starts_at:, duration:)
-      find_by(**period.as_params) if period.has_activity?
+      find_by(**period.as_params) if period.has_enough_activity?
     end
 
     private
       def create_for(collections, starts_at:, duration: 1.week)
         period = Period.new(collections, starts_at:, duration:)
 
-        if period.has_activity?
+        if period.has_enough_activity?
           summarizer = Event::Summarizer.new(period.events)
           summarized_content = summarizer.summarized_content # outside of transaction as this can be slow
 

app/models/period_highlights/period.rb

@@ -1,4 +1,6 @@
 class PeriodHighlights::Period
+  MIN_EVENTS_TO_BE_INTERESTING = 7
+
   attr_reader :collections, :starts_at, :duration
 
   def initialize(collections, starts_at:, duration:)
@@ -11,8 +13,8 @@ class PeriodHighlights::Period
     @events ||= Event.where(collection: collections).where(created_at: window)
   end
 
-  def has_activity?
-    events.any?
+  def has_enough_activity?
+    events.count >= MIN_EVENTS_TO_BE_INTERESTING
   end
 
   def key