akkoma/lib/pleroma/web/activity_pub/mrf.ex

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Elixir
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defmodule Pleroma.Web.ActivityPub.MRF do
@callback filter(Map.t) :: {:ok | :reject, Map.t}
def filter(object) do
get_policies()
|> Enum.reduce({:ok, object}, fn
(policy, {:ok, object}) ->
policy.filter(object)
(_, error) -> error
end)
end
def get_policies() do
Application.get_env(:pleroma, :instance, [])
|> Keyword.get(:rewrite_policy, [])
|> get_policies()
end
def get_policies(policy) when is_atom(policy), do: [policy]
def get_policies(policies) when is_list(policies), do: policies
end