defmodule Scopes.CSys.Environ do
  use Agent

  def create(parent, progs) do
    {:ok, env} = Agent.start_link(
      fn -> %{parent: parent, programs: progs} end, 
      name: __MODULE__)
    env
  end

  def get_prog(env, name) do
    Agent.get(env, fn state ->
      state.programs[name]
    end)
  end

  def notify(env, msg) do
    Agent.cast(env, fn state -> 
      send(state.parent, msg)
      state
    end) 
  end
end