defmodule Ash.Resource.Transformers.ValidateActionTypesSupported do
  @moduledoc """
  Confirms that all action types declared on a resource are supported by its data layer
  """
  use Ash.Dsl.Transformer

  alias Ash.Dsl.Transformer
  alias Ash.Error.Dsl.DslError

  def transform(resource, dsl_state) do
    dsl_state
    |> Transformer.get_entities([:actions])
    |> Enum.reject(&(&1.type == :read))
    |> Enum.each(fn action ->
      unless Ash.DataLayer.data_layer_can?(resource, action.type) do
        raise DslError,
          module: resource,
          message:
            "Data layer #{Ash.DataLayer.data_layer(resource)} for #{inspect(resource)} does not support #{action.type} actions",
          path: [:actions, action.type, action.name]
      end
    end)

    {:ok, dsl_state}
  end
end