island

defmodule Island do
  use Application

  @type spec() :: module() | {module(), args :: term()}

  @impl Application
  def start(_type, _args) do
    children = [
      Island.ProcessCoordinator.child_spec([]),
      Island.Supervisor.child_spec([]),
      Island.NodeServer.child_spec([])
    ]

    options = [
      strategy: :one_for_all,
      name: IslandSupervisor
    ]

    Supervisor.start_link(children, options)
  end

  @spec register(spec()) :: :ok | {:error, term()}
  defdelegate register(spec), to: Island.ProcessCoordinator
  @spec deregister(spec()) :: :ok | {:error, term()}
  defdelegate deregister(spec), to: Island.ProcessCoordinator

  @spec get_leader_node() :: Island.NodeServer.leader_node() | term()
  defdelegate get_leader_node(), to: Island.NodeServer
end