akkoma/lib/pleroma/web/media_proxy/invalidation.ex

defmodule Pleroma.Web.MediaProxy.Invalidation do
  @callback purge(list(String.t()), map()) :: {:ok, String.t()} | {:error, String.t()}

  alias Pleroma.Config

  def purge(urls) do
    [:media_proxy, :invalidation, :enabled]
    |> Config.get()
    |> do_purge(urls)
  end

  defp do_purge(true, urls) do
    provider = Config.get([:media_proxy, :invalidation, :provider])
    options = Config.get(provider)
    provider.purge(urls, options)
    :ok
  end

  defp do_purge(_, _), do: :ok
end