defmodule SquidWeb do
  @doc """
  Return registered routers.
  """
  def registered_routers do
    load_tentacles_cfg(:router)
  end

  defp load_tentacles_cfg(config_key) do
    func = &{&1, Application.get_env(&1, :squid)[config_key]}

    Application.get_env(:squid, :tentacles, [])
    |> Enum.map(&func.(&1))
    |> Enum.filter(&elem(&1, 1))
  end

  @doc """
  Creates the dynamic router.
  """
  def create_dynamic_router do
    applications =
      Application.started_applications()
      |> MapSet.new(&elem(&1, 0))

    Application.get_env(:squid, :tentacles)
    |> Enum.filter(&MapSet.member?(applications, &1))
    |> SquidWeb.Router.create_dynamic_router()

    :ok
  end
end