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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Plugs.PlugHelper do
@moduledoc "Pleroma Plug helper"
@called_plugs_list_id :called_plugs
def called_plugs_list_id, do: @called_plugs_list_id
@skipped_plugs_list_id :skipped_plugs
def skipped_plugs_list_id, do: @skipped_plugs_list_id
@doc "Returns `true` if specified plug was called."
def plug_called?(conn, plug_module) do
contained_in_private_list?(conn, @called_plugs_list_id, plug_module)
end
@doc "Returns `true` if specified plug was explicitly marked as skipped."
def plug_skipped?(conn, plug_module) do
contained_in_private_list?(conn, @skipped_plugs_list_id, plug_module)
end
@doc "Returns `true` if specified plug was either called or explicitly marked as skipped."
def plug_called_or_skipped?(conn, plug_module) do
plug_called?(conn, plug_module) || plug_skipped?(conn, plug_module)
end
# Appends plug to known list (skipped, called). Intended to be used from within plug code only.
def append_to_private_list(conn, list_id, value) do
list = conn.private[list_id] || []
modified_list = Enum.uniq(list ++ [value])
Plug.Conn.put_private(conn, list_id, modified_list)
end
defp contained_in_private_list?(conn, private_variable, value) do
list = conn.private[private_variable] || []
value in list
end
end
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