Delete attachments asynchronously

lib/pleroma/object.ex

@@ -19,6 +19,8 @@ defmodule Pleroma.Object do
 
   @type t() :: %__MODULE__{}
 
+  @derive {Jason.Encoder, only: [:data]}
+
   schema "objects" do
     field(:data, :map)
 
@@ -183,83 +185,14 @@ defmodule Pleroma.Object do
          deleted_activity = Activity.delete_all_by_object_ap_id(id),
          {:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
          {:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path),
-         :ok <- delete_attachments(object) do
+         {:ok, _} <-
+           Pleroma.Workers.AttachmentsCleanupWorker.enqueue("cleanup_attachments", %{
+             "object" => object
+           }) do
       {:ok, object, deleted_activity}
     end
   end
 
-  defp delete_attachments(%{data: %{"attachment" => [_ | _] = attachments, "actor" => actor}}) do
-    hrefs =
-      Enum.flat_map(attachments, fn attachment ->
-        Enum.map(attachment["url"], & &1["href"])
-      end)
-
-    names = Enum.map(attachments, & &1["name"])
-
-    uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
-
-    # find all objects for copies of the attachments, name and actor doesn't matter here
-    delete_ids =
-      from(o in Object,
-        where:
-          fragment(
-            "to_jsonb(array(select jsonb_array_elements((?)#>'{url}') ->> 'href' where jsonb_typeof((?)#>'{url}') = 'array'))::jsonb \\?| (?)",
-            o.data,
-            o.data,
-            ^hrefs
-          )
-      )
-      |> Repo.all()
-      # we should delete 1 object for any given attachment, but don't delete files if
-      # there are more than 1 object for it
-      |> Enum.reduce(%{}, fn %{
-                               id: id,
-                               data: %{
-                                 "url" => [%{"href" => href}],
-                                 "actor" => obj_actor,
-                                 "name" => name
-                               }
-                             },
-                             acc ->
-        Map.update(acc, href, %{id: id, count: 1}, fn val ->
-          case obj_actor == actor and name in names do
-            true ->
-              # set id of the actor's object that will be deleted
-              %{val | id: id, count: val.count + 1}
-
-            false ->
-              # another actor's object, just increase count to not delete file
-              %{val | count: val.count + 1}
-          end
-        end)
-      end)
-      |> Enum.map(fn {href, %{id: id, count: count}} ->
-        # only delete files that have single instance
-        with 1 <- count do
-          prefix =
-            case Pleroma.Config.get([Pleroma.Upload, :base_url]) do
-              nil -> "media"
-              _ -> ""
-            end
-
-          base_url = Pleroma.Config.get([__MODULE__, :base_url], Pleroma.Web.base_url())
-
-          file_path = String.trim_leading(href, "#{base_url}/#{prefix}")
-
-          uploader.delete_file(file_path)
-        end
-
-        id
-      end)
-
-    from(o in Object, where: o.id in ^delete_ids)
-    |> Repo.delete_all()
-
-    :ok
-  end
-
-  defp delete_attachments(%{data: _data}), do: :ok
-
   def prune(%Object{data: %{"id" => id}} = object) do
     with {:ok, object} <- Repo.delete(object),
          {:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),