From 7578d8fc4499857083f43805c0adb474ac48a6ba Mon Sep 17 00:00:00 2001
From: Robin Ward <robin.ward@gmail.com>
Date: Wed, 27 Sep 2017 14:00:53 -0400
Subject: [PATCH] Add a `DiscourseEvent` for when a topic is closed

---
 app/services/topic_status_updater.rb       |  4 ++++
 spec/services/topic_status_updater_spec.rb | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/app/services/topic_status_updater.rb b/app/services/topic_status_updater.rb
index ed088d5a8ea..cd1ea0d94f7 100644
--- a/app/services/topic_status_updater.rb
+++ b/app/services/topic_status_updater.rb
@@ -36,6 +36,10 @@ TopicStatusUpdater = Struct.new(:topic, :user) do
       result = false if rc == 0
     end
 
+    if status.manually_closing_topic?
+      DiscourseEvent.trigger(:topic_closed, topic)
+    end
+
     if @topic_status_update
       if status.manually_closing_topic? || status.closing_topic?
         topic.delete_topic_timer(TopicTimer.types[:close])
diff --git a/spec/services/topic_status_updater_spec.rb b/spec/services/topic_status_updater_spec.rb
index 0d1dafa8975..14106b10f1f 100644
--- a/spec/services/topic_status_updater_spec.rb
+++ b/spec/services/topic_status_updater_spec.rb
@@ -40,6 +40,20 @@ describe TopicStatusUpdater do
     expect(last_post.raw).to eq(I18n.t("topic_statuses.autoclosed_enabled_minutes", count: 0))
   end
 
+  it "triggers a DiscourseEvent on close" do
+    topic = create_topic
+
+    called = false
+    updater = -> (topic) { called = true }
+
+    DiscourseEvent.on(:topic_closed, &updater)
+    TopicStatusUpdater.new(topic, admin).update!("closed", true)
+    DiscourseEvent.off(:topic_closed, &updater)
+
+    expect(topic).to be_closed
+    expect(called).to eq(true)
+  end
+
   it "adds an autoclosed message based on last post" do
     topic = create_topic
     Fabricate(:post, topic: topic)