import { isRailDeckApiError, type RailDeckDirectIntegrationClient as Client } from '@raildeck/frontend-sdk/direct-integration';

type SaveInput = Parameters<Client['rollingStock']['update']>[2];

/**
 * Submit one reviewed save and distinguish an SDK failure from an unexpected failure.
 * @param client - Configured integration client with caller-owned authority.
 * @param accountId - Account containing the selected vehicle.
 * @param vehicleId - Vehicle whose version the person reviewed.
 * @param input - Original save, including its expectedUpdatedAt concurrency fence.
 * @returns A discriminated result; failures preserve the original intent without replay.
 */
export async function saveVehicleWithOutcome(
  client: Client,
  accountId: string,
  vehicleId: string,
  input: SaveInput,
) {
  try {
    const vehicle = await client.rollingStock.update(accountId, vehicleId, input);
    return { kind: 'saved' as const, vehicle };
  } catch (error: unknown) {
    if (!isRailDeckApiError(error)) throw error;
    return {
      kind: 'needs-review' as const,
      errorKind: error.kind,
      errorCode: error.errorCode,
      statusCode: error.statusCode,
      correlationId: error.correlationId,
      retryAfterSeconds: error.retryAfterSeconds,
    };
  }
}