defmodule ExampleSupervisor do
  use Supervisor

  def start_link(args) do
    Supervisor.start_link(__MODULE__, args, name: __MODULE__)
  end

  @impl true
  def init(_init_arg) do
    children = [ExampleConsumer]

    Supervisor.init(children, strategy: :one_for_one)
  end
end

defmodule ExampleConsumer do
  use Nostrum.Consumer

  alias Nostrum.Api.Message

  def handle_event({:MESSAGE_CREATE, msg, _ws_state}) do
    case msg.content do
      "!sleep" ->
        Message.create(msg.channel_id, "Going to sleep...")
        # This won't stop other events from being handled.
        Process.sleep(3000)

      "!ping" ->
        Message.create(msg.channel_id, "pyongyang!")

      "!raise" ->
        # This won't crash the entire Consumer.
        raise "No problems here!"

      _ ->
        :ignore
    end
  end
end