defmodule ExUnit.ClusteredCase.App do
  @moduledoc false
  use Application

  def start(_type, _args) do
    children =
      if is_clustered_node?() do
        # Do not start boot server/children if running as a cluster node
        []
      else
        # We depend on the boot server, so start it if not started yet
        unless Process.whereis(:boot_server) do
          {:ok, _} = :erl_boot_server.start_link([{127, 0, 0, 1}])
        end

        [
          {ExUnit.ClusteredCase.Node.Ports, []},
          {ExUnit.ClusteredCase.Cluster.Supervisor, []}
        ]
      end

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

  defp is_clustered_node? do
    Atom.to_string(node()) =~ "ex_unit_clustered_node_"
  end
end