defmodule Logster.Plugs.ChangeLogLevel do
  @moduledoc """
    A plug for changing the log level used by Logster. Useful for increasing/descreasing the log level on a per controller or action basis

    To change the log level for a specific controller, add the following in the controller

      plug Logster.Plugs.ChangeLogLevel, to: :debug

    To specify it only for a specific action, add the following:

      plug Logster.Plugs.ChangeLogLevel, to: :debug when action in [:index, :show]
  """

  import Plug.Conn

  def init(opts), do: Keyword.get(opts, :to)

  def call(conn, nil), do: conn
  def call(conn, log_level), do: conn |> put_private(:logster_log_level, log_level)
end