FIX: use the new duration attribute in set_or_create_timer method.

New `duration` attribute is introduced for the `set_or_create_timer` method in the commit aad12822b7d7c9c6ecd976e23d3a83626c052dce for "based on last post" and "auto delete replies" topic timers.

app/models/topic.rb

@@ -257,10 +257,14 @@ class Topic < ActiveRecord::Base
        self.category.auto_close_hours &&
        !public_topic_timer&.execute_at
 
+      based_on_last_post = self.category.auto_close_based_on_last_post
+      duration = based_on_last_post ? self.category.auto_close_hours : nil
+
       self.set_or_create_timer(
         TopicTimer.types[:close],
         self.category.auto_close_hours,
-        based_on_last_post: self.category.auto_close_based_on_last_post
+        based_on_last_post: based_on_last_post,
+        duration: duration
       )
     end
   end

lib/post_creator.rb

@@ -473,8 +473,9 @@ class PostCreator
          topic_timer.duration > 0
 
         @topic.set_or_create_timer(TopicTimer.types[:close],
-          topic_timer.duration,
+          nil,
-          based_on_last_post: topic_timer.based_on_last_post
+          based_on_last_post: topic_timer.based_on_last_post,
+          duration: topic_timer.duration
         )
       end
     end

spec/components/post_creator_spec.rb

@@ -367,7 +367,8 @@ describe PostCreator do
             Fabricate(:topic_timer,
               based_on_last_post: true,
               execute_at: Time.zone.now - 12.hours,
-              created_at: Time.zone.now - 24.hours
+              created_at: Time.zone.now - 24.hours,
+              duration: 12
             )
           end
 

spec/models/topic_spec.rb

@@ -1638,7 +1638,7 @@ describe Topic do
 
     it 'can take a number of hours as a string and can handle based on last post' do
       freeze_time now
-      topic.set_or_create_timer(TopicTimer.types[:close], '18', by_user: admin, based_on_last_post: true)
+      topic.set_or_create_timer(TopicTimer.types[:close], nil, by_user: admin, based_on_last_post: true, duration: 18)
       expect(topic.topic_timers.first.execute_at).to eq_time(18.hours.from_now)
     end
 
@@ -1750,7 +1750,7 @@ describe Topic do
       it "should be able to override category's default auto close" do
         Jobs.run_immediately!
 
-        expect(topic.topic_timers.first.duration).to eq(4)
+        expect(topic.topic_timers.first.execute_at).to eq_time(topic.created_at + 4.hours)
 
         topic.set_or_create_timer(TopicTimer.types[:close], 2, by_user: admin)
 

spec/services/topic_status_updater_spec.rb

@@ -59,7 +59,7 @@ describe TopicStatusUpdater do
     Fabricate(:post, topic: topic)
 
     topic.set_or_create_timer(
-      TopicTimer.types[:close], '10', based_on_last_post: true
+      TopicTimer.types[:close], nil, based_on_last_post: true, duration: 10
     )
 
     TopicStatusUpdater.new(topic, admin).update!("autoclosed", true)