From f3f736afc4b4532ef71d5c6aba42945bd26a7699 Mon Sep 17 00:00:00 2001
From: William Pitcock <nenolod@dereferenced.org>
Date: Thu, 25 Oct 2018 02:47:55 +0000
Subject: [PATCH] activity: add helper to fetch an activity's parent

---
 lib/pleroma/activity.ex | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/pleroma/activity.ex b/lib/pleroma/activity.ex
index bed96861f..c065f3b6c 100644
--- a/lib/pleroma/activity.ex
+++ b/lib/pleroma/activity.ex
@@ -82,4 +82,10 @@ defmodule Pleroma.Activity do
   def normalize(obj) when is_map(obj), do: Activity.get_by_ap_id(obj["id"])
   def normalize(ap_id) when is_binary(ap_id), do: Activity.get_by_ap_id(ap_id)
   def normalize(_), do: nil
+
+  def get_in_reply_to_activity(%Activity{data: %{"object" => %{"inReplyTo" => ap_id}}}) do
+    get_create_activity_by_object_ap_id(ap_id)
+  end
+
+  def get_in_reply_to_activity(_), do: nil
 end