From fd287387a042b86a62d80c41b1dd282316b6609b Mon Sep 17 00:00:00 2001
From: Mark Felder <feld@FreeBSD.org>
Date: Tue, 23 Jul 2019 13:14:26 -0500
Subject: [PATCH] Do not notify subscribers for messages from users which are
 replies to others

---
 lib/pleroma/web/common_api/utils.ex |  6 ++++++
 test/notification_test.exs          | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/lib/pleroma/web/common_api/utils.ex b/lib/pleroma/web/common_api/utils.ex
index fcc000969..6f0f56d96 100644
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@@ -439,6 +439,12 @@ def maybe_notify_mentioned_recipients(
 
   def maybe_notify_mentioned_recipients(recipients, _), do: recipients
 
+  def maybe_notify_subscribers(_, %Activity{
+        data: %{"object" => %Object{data: %{"inReplyTo" => _ap_id}}}
+      }) do
+    :nothing
+  end
+
   def maybe_notify_subscribers(
         recipients,
         %Activity{data: %{"actor" => actor, "type" => type}} = activity
diff --git a/test/notification_test.exs b/test/notification_test.exs
index dda570b49..06f0b6557 100644
--- a/test/notification_test.exs
+++ b/test/notification_test.exs
@@ -42,6 +42,24 @@ test "it creates a notification for subscribed users" do
 
       assert notification.user_id == subscriber.id
     end
+
+    test "does not create a notification for subscribed users if status is a reply" do
+      user = insert(:user)
+      other_user = insert(:user)
+      subscriber = insert(:user)
+
+      User.subscribe(subscriber, other_user)
+
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "test post"})
+
+      {:ok, reply_activity} =
+        CommonAPI.post(other_user, %{
+          "status" => "test reply",
+          "in_reply_to_status_id" => activity.id
+        })
+
+      refute Notification.create_notification(reply_activity, subscriber)
+    end
   end
 
   describe "create_notification" do