Add a react to like MRF

Signed-off-by: Sam Therapy <sam@samtherapy.net>

lib/pleroma/web/activity_pub/mrf/change_react_to_like.ex

@@ -0,0 +1,36 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.ChangeReactstoLikes do
+  require Logger
+
+  @moduledoc "Changes specified EmojiReacts into a Like"
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+
+  @impl true
+  @spec filter(any) :: {:ok, any}
+  def filter(%{"type" => "EmojiReact"} = object) do
+    Logger.warn("#{inspect(object)}")
+    test = object["content"]
+
+    # TODO: make this pull from config
+    if test in ["👍", "❤️", "😆", "😮", "😢", "😩", "😭", "⭐"] do
+      Logger.warn("MRF.ChangeReactstoLikes: Changing #{inspect(test)} to a Favourite")
+
+      object =
+        object
+        |> Map.put("type", "Like")
+
+      {:ok, object}
+    else
+      {:ok, object}
+    end
+  end
+
+  @impl true
+  def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe, do: {:ok, %{}}
+end