defmodule Kalium do
  @external_resource readme = Path.join([__DIR__, "../README.md"])

  @moduledoc readme
             |> File.read!()
             |> String.split("<!-- MDOC -->")
             |> Enum.fetch!(2)

  @moduledoc since: "0.1.0"

  alias __MODULE__.{Edge, Event, Vert}

  @type state :: :wait | :underway | :ok | :error
  @type result :: any()

  @type t :: %__MODULE__{
          __module__: module(),
          graph: Graph.t(),
          events: [Event],
          state: state(),
          result: result(),
          context: keyword(),
          verts: %{Vert.name() => Vert.t()},
          edges: %{Edge.name() => Edge.t()}
        }

  @enforce_keys [:graph, :state, :__module__]
  defstruct __module__: nil,
            graph: nil,
            events: [],
            result: nil,
            state: nil,
            context: [],
            verts: %{},
            edges: %{}

  defmacro __using__(_) do
    quote do
    end
  end
end