grovepi

defmodule GrovePi.Supervisor do
  @moduledoc """
    This is the top level supervisor that is started by the grovepi application. You
    can use this to start your own grovepi supervision tree by passing a prefix to the
    `start_link` function.

    ```elixir
      iex> GrovePi.Supervisor.start_link(0x04, MyPrefix)
      {:ok, #PID<0.100.0}
    ```
  """
  use Supervisor

  def start_link(grovepi_address, prefix) do
    Supervisor.start_link(__MODULE__, [grovepi_address, prefix])
  end

  def init([grovepi_address, prefix]) do
    children = [
      supervisor(GrovePi.Registry.Pin, [prefix]),
      supervisor(GrovePi.Registry.Subscriber, [prefix]),

      worker(GrovePi.Board, [grovepi_address, prefix]),
    ]

    supervise children, strategy: :one_for_one, name: name(prefix)
  end

  defp name(prefix) do
    String.to_atom("#{prefix}.#{__MODULE__}")
  end
end