defmodule Scopes.CSys.Environ do

  alias Scopes.CSys
  alias Scopes.Shape

  def setup({state, proc}) do
    scope = {[], &proc_env/2, [], self()}
    env = CSys.neuron(scope)
    CSys.create(Shape.create([:csys, :zero]), {state, proc, [], env})
    env
  end

  def proc_env(msg, scope) do
    case Shape.head(msg) do
      [:csys, :created | _rest] -> register_creation(msg, scope)
      _ -> nil
    end
    send(CSys.env(scope), msg)
  end

  def register_creation(msg, {state, proc, syns, env}) do
   new = Shape.data(msg).new
   CSys.update({[new | state], proc, syns, env})
  end
end