From edec300ddb9a6b6922950bfeb4b2219d7b4db87c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?marcin=20miko=C5=82ajczak?= <git@mkljczk.pl>
Date: Fri, 11 Aug 2023 14:59:58 +0200
Subject: [PATCH] Make status.language == nil for 'und' value
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Signed-off-by: marcin mikołajczak <git@mkljczk.pl>
---
 lib/pleroma/web/mastodon_api/views/status_view.ex      |  8 ++++++--
 .../web/mastodon_api/views/status_view_test.exs        | 10 ++++++++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index 27fa1505d4..ac24e79869 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -225,7 +225,7 @@ def render(
       mentions: mentions,
       tags: reblogged[:tags] || [],
       application: build_application(object.data["generator"]),
-      language: object.data["language"],
+      language: get_language(object),
       emojis: [],
       pleroma: %{
         local: activity.local,
@@ -434,7 +434,7 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
       mentions: mentions,
       tags: build_tags(tags),
       application: build_application(object.data["generator"]),
-      language: object.data["language"],
+      language: get_language(object),
       emojis: build_emojis(object.data["emoji"]),
       pleroma: %{
         local: activity.local,
@@ -917,4 +917,8 @@ def build_source_location(%{"location_id" => location_id}) when is_binary(locati
   end
 
   def build_source_location(_), do: nil
+
+  defp get_language(%{data: %{"language" => "und"}}), do: nil
+
+  defp get_language(object), do: object.data["language"]
 end
diff --git a/test/pleroma/web/mastodon_api/views/status_view_test.exs b/test/pleroma/web/mastodon_api/views/status_view_test.exs
index e6b1b6fa8b..660ebc82a5 100644
--- a/test/pleroma/web/mastodon_api/views/status_view_test.exs
+++ b/test/pleroma/web/mastodon_api/views/status_view_test.exs
@@ -916,6 +916,16 @@ test "it shows post language" do
     assert status.language == "pl"
   end
 
+  test "doesn't show post language if it's 'und'" do
+    user = insert(:user)
+
+    {:ok, post} = CommonAPI.post(user, %{status: "sdifjogijodfg", language: "und"})
+
+    status = StatusView.render("show.json", activity: post)
+
+    assert status.language == nil
+  end
+
   test "with a source object" do
     note =
       insert(:note,