defmodule Extreme.System.FacadeSup do
  use Supervisor
  import Cachex.Spec

  def start_link(facade_module, facade_name, opts \\ []),
    do:
      Supervisor.start_link(__MODULE__, {facade_module, facade_name, opts},
        name: name(facade_name)
      )

  def init({facade_module, facade_name, opts}) do
    children = [
      worker(Cachex, [cache_name(facade_name), [expiration: expiration(interval: 10_000)]]),
      supervisor(Task.Supervisor, [[name: request_sup_name(facade_name)]]),
      worker(facade_module, [
        request_sup_name(facade_name),
        cache_name(facade_name),
        Keyword.put(opts, :name, facade_name)
      ])
    ]

    supervise(children, strategy: :one_for_one)
  end

  defp name({:global, facade_name}),
    do: name(facade_name)

  defp name(facade_name),
    do: "#{facade_name |> to_string()}.Supervisor" |> String.to_atom()

  defp request_sup_name({:global, facade_name}),
    do: request_sup_name(facade_name)

  defp request_sup_name(facade_name),
    do: "#{facade_name |> to_string()}.RequestHandler" |> String.to_atom()

  defp cache_name({:global, facade_name}),
    do: cache_name(facade_name)

  defp cache_name(facade_name),
    do: "#{facade_name |> to_string()}.RequestCache" |> String.to_atom()
end