defmodule PlugSessionRedis do
  use Application

  def start(_type, _args) do
    import Supervisor.Spec, warn: false
    # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
    # for other strategies and supported options
    opts = [strategy: :one_for_one, name: PlugSessionRedis.Supervisor]
    Supervisor.start_link([pool_spec()], opts)
  end

  @conf Application.get_env(:plug_session_redis, :config)
  def pool_spec() do
    child_spec(@conf[:name], @conf[:pool], {:redo, @conf[:redis]})
  end

  defp child_spec(pool_name, pool_args, redis_args) do
    strategy = Keyword.get(pool_args, :strategy, :fifo)

    pool_args =
      [strategy: strategy, name: {:local, pool_name}, worker_module: PlugSessionRedis.Worker] ++
        pool_args

    :poolboy.child_spec(pool_name, pool_args, redis_args)
  end
end