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

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

  @kinds ~w(provision suspend unsuspend offboard update rollback test)
  @statuses ~w(pending running completed failed compensating rolled_back)

  schema "saga_runs" do
    field :deployment_id, :binary_id
    field :kind, :string
    field :status, :string, default: "pending"
    field :step_modules, {:array, :string}, default: []
    field :current_step_idx, :integer, default: 0
    field :context, :map, default: %{}
    field :started_at, :utc_datetime
    field :completed_at, :utc_datetime
    field :cancel_requested, :boolean, default: false
    field :error, :map
    field :triggered_by, :string

    timestamps(type: :utc_datetime)
  end

  @required ~w(kind step_modules)a
  @optional ~w(deployment_id status current_step_idx context started_at
               completed_at cancel_requested error triggered_by)a

  def changeset(saga, attrs) do
    saga
    |> cast(attrs, @required ++ @optional)
    |> validate_required(@required)
    |> validate_inclusion(:kind, @kinds)
    |> validate_inclusion(:status, @statuses)
  end
end