defmodule ArcadiaCloud.Provisioning.SagaStepResult do
  use Ecto.Schema
  import Ecto.Changeset

  @primary_key {:id, :binary_id, autogenerate: true}
  @foreign_key_type :binary_id

  @statuses ~w(running completed failed compensated)

  schema "saga_step_results" do
    field :step_idx, :integer
    field :step_name, :string
    field :status, :string
    field :output, :map, default: %{}
    field :attempts, :integer, default: 0
    field :started_at, :utc_datetime
    field :completed_at, :utc_datetime
    field :error, :map

    belongs_to :saga, ArcadiaCloud.Provisioning.SagaRun
  end

  @required ~w(saga_id step_idx step_name status)a
  @optional ~w(output attempts started_at completed_at error)a

  def changeset(result, attrs) do
    result
    |> cast(attrs, @required ++ @optional)
    |> validate_required(@required)
    |> validate_inclusion(:status, @statuses)
    |> unique_constraint([:saga_id, :step_idx])
  end
end