import type { FlowContext, StepType } from "../types.js";
import { WizardFlow } from "./WizardFlow.js";

/**
 * Flow strategy for data-only actions (e.g. sign, verify).
 *
 * These actions produce computed data rather than a transaction.
 * No invitation, UTXOs, or fees are involved — just variables in,
 * data result out.
 *
 * NOTE: Engine-level data action execution is not yet implemented.
 * The result step is currently stubbed.
 */
export class DataWizardFlow extends WizardFlow {
  readonly type = "data" as const;

  /** The data field identifiers this action produces (from action.data). */
  readonly dataOutputs: string[];

  constructor(dataOutputs: string[]) {
    super();
    this.dataOutputs = dataOutputs;
  }

  getStepTypes(context: FlowContext): StepType[] {
    const steps: StepType[] = [];
    if (context.availableRoles.length > 1) steps.push("role-select");
    if (context.hasVariables) steps.push("variables");
    steps.push("result");
    return steps;
  }

  canFinalize(): boolean {
    return false;
  }

  getFinalActionLabel(): string {
    return "Done";
  }
}