Merge branch 'preserve-mentions-order' into 'develop'

Preserve order of mentioned users

See merge request !3617

lib/pleroma/user.ex

@@ -2279,6 +2279,7 @@ def ensure_keys_present(%User{} = user) do
   def get_ap_ids_by_nicknames(nicknames) do
     from(u in User,
       where: u.nickname in ^nicknames,
+      order_by: fragment("array_position(?, ?)", ^nicknames, u.nickname),
       select: u.ap_id
     )
     |> Repo.all()

test/pleroma/user_test.exs

@@ -2084,6 +2084,17 @@ test "it returns a list of AP ids for a given set of nicknames" do
       assert user.ap_id in ap_ids
       assert user_two.ap_id in ap_ids
     end
+
+    test "it returns a list of AP ids in the same order" do
+      user = insert(:user)
+      user_two = insert(:user)
+      user_three = insert(:user)
+
+      ap_ids =
+        User.get_ap_ids_by_nicknames([user.nickname, user_three.nickname, user_two.nickname])
+
+      assert [user.ap_id, user_three.ap_id, user_two.ap_id] == ap_ids
+    end
   end
 
   describe "sync followers count" do