Fix handling incoming Likes

lib/clacks/activity.ex

@@ -60,11 +60,12 @@ defmodule Clacks.Activity do
     Repo.one(from a in __MODULE__, where: fragment("?->>'id'", a.data) == ^ap_id)
   end
 
-  @spec get_by_object_ap_id(object_id :: String.t()) :: t() | nil
-  def get_by_object_ap_id(object_id) do
+  @spec get_by_object_ap_id(object_id :: String.t(), type :: String.t()) :: t() | nil
+  def get_by_object_ap_id(object_id, type) do
     __MODULE__
     |> where(
       [a],
+      fragment("?->>'type'", a.data) == ^type and
         fragment("COALESCE(?->'object'->>'id', ?->>'object')", a.data, a.data) == ^object_id
     )
     |> preload_object()

lib/clacks/notification.ex

@@ -75,7 +75,7 @@ defmodule Clacks.Notification do
       )
       when type in ["Announce", "Like"] do
     with %Activity{local: true, actor: local_actor_id} <-
-           Activity.get_by_object_ap_id(original_object_ap_id),
+           Activity.get_by_object_ap_id(original_object_ap_id, "Create"),
          %Actor{local: true} = original_activity_actor <-
            Actor.get_cached_by_ap_id(local_actor_id) do
       create(String.downcase(type), activity, original_activity_actor)

lib/clacks/object.ex

@@ -74,7 +74,7 @@ defmodule Clacks.Object do
             _ = Clacks.Actor.get_by_ap_id(actor)
 
             activity =
-              case Clacks.Activity.get_by_object_ap_id(ap_id) do
+              case Clacks.Activity.get_by_object_ap_id(ap_id, "Create") do
                 nil ->
                   if synthesize_create do
                     create = Clacks.ActivityPub.synthesized_create(data)

lib/clacks_web/controllers/objects_controller.ex

@@ -32,7 +32,7 @@ defmodule ClacksWeb.ObjectsController do
   defp redirect_to_status(conn, _params) do
     object_id = current_url(conn)
 
-    case Activity.get_by_object_ap_id(object_id) do
+    case Activity.get_by_object_ap_id(object_id, "Create") do
       nil ->
         conn
         |> resp(404, "Not Found")