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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.ObjectValidators.FollowValidator do
   6   use Ecto.Schema
   7
   8   import Ecto.Changeset
   9   import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
  10
  11   @primary_key false
  12
  13   embedded_schema do
  14     quote do
  15       unquote do
  16         import Elixir.Pleroma.Web.ActivityPub.ObjectValidators.CommonFields
  17         message_fields()
  18         activity_fields()
  19       end
  20     end
  21
  22     field(:state, :string, default: "pending")
  23   end
  24
  25   def cast_data(data) do
  26     %__MODULE__{}
  27     |> cast(data, __schema__(:fields))
  28   end
  29
  30   defp validate_data(cng) do
  31     cng
  32     |> validate_required([:id, :type, :actor, :to, :cc, :object])
  33     |> validate_inclusion(:type, ["Follow"])
  34     |> validate_inclusion(:state, ~w{pending reject accept})
  35     |> validate_actor_presence()
  36     |> validate_actor_presence(field_name: :object)
  37   end
  38
  39   def cast_and_validate(data) do
  40     data
  41     |> cast_data
  42     |> validate_data
  43   end
  44 end