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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
   6   import Ecto.Changeset
   7
   8   alias Pleroma.Activity
   9   alias Pleroma.Object
  10   alias Pleroma.User
  11
  12   def validate_actor_presence(cng, field_name \\ :actor) do
  13     cng
  14     |> validate_change(field_name, fn field_name, actor ->
  15       if User.get_cached_by_ap_id(actor) do
  16         []
  17       else
  18         [{field_name, "can't find user"}]
  19       end
  20     end)
  21   end
  22
  23   def validate_object_presence(cng, field_name \\ :object) do
  24     cng
  25     |> validate_change(field_name, fn field_name, object ->
  26       if Object.get_cached_by_ap_id(object) || Activity.get_by_ap_id(object) do
  27         []
  28       else
  29         [{field_name, "can't find object"}]
  30       end
  31     end)
  32   end
  33 end