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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.Object
   9   alias Pleroma.User
  10
  11   def validate_actor_presence(cng) do
  12     validate_user_presence(cng, :actor)
  13   end
  14
  15   def validate_user_presence(cng, field_name) do
  16     cng
  17     |> validate_change(field_name, fn field_name, actor ->
  18       if User.get_cached_by_ap_id(actor) do
  19         []
  20       else
  21         [{field_name, "can't find user"}]
  22       end
  23     end)
  24   end
  25
  26   def validate_object_presence(cng, field_name \\ :object) do
  27     cng
  28     |> validate_change(field_name, fn field_name, object ->
  29       if Object.get_cached_by_ap_id(object) do
  30         []
  31       else
  32         [{field_name, "can't find object"}]
  33       end
  34     end)
  35   end
  36 end