Only summarize today if there are at least 10 events

https://3.basecamp.com/2914079/buckets/37331921/todos/8877635813#__recording_8879434338

app/models/user/day_timeline.rb

@@ -3,6 +3,8 @@ class User::DayTimeline
 
   attr_reader :user, :day, :filter
 
+  delegate :today?, to: :day
+
   def initialize(user, day, filter)
     @user, @day, @filter = user, day, filter
   end

app/models/user/day_timeline/summarizable.rb

@@ -9,6 +9,10 @@ module User::DayTimeline::Summarizable
     @summary ||= Event::ActivitySummary.for(events)
   end
 
+  def summarizable?
+    !day.today? || events.count >= 10
+  end
+
   def summarize
     Event::ActivitySummary.create_for(events)
   end

app/views/events/day_timeline/_summary.html.erb

@@ -1,8 +1,10 @@
-<% if day_timeline.summarized? %>
-  <%= render "events/day_timeline/activity_summary", summary: day_timeline.summary %>
-<% else %>
-  <div id="<%= day_timeline.summary_key %>">
-  <%= auto_submit_form_with url: events_activity_summaries_path(day: day_timeline.day, **day_timeline.filter.as_params), method: :post %>
-  Generating summary...
-  </div>
+<% if day_timeline.summarizable? %>
+  <% if day_timeline.summarized? %>
+    <%= render "events/day_timeline/activity_summary", summary: day_timeline.summary %>
+  <% else %>
+    <div id="<%= day_timeline.summary_key %>">
+      <%= auto_submit_form_with url: events_activity_summaries_path(day: day_timeline.day, **day_timeline.filter.as_params), method: :post %>
+      Generating summary...
+    </div>
+  <% end %>
 <% end %>