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

/**
 * Read handling evidence and preview a chosen train’s requested speed.
 * @param client - Configured client; the caller owns current authority.
 * @param accountId - Authorised account for this workflow.
 * @param layoutId - Explicitly selected layout within the account.
 * @param locomotiveId - Explicitly selected locomotive.
 * @param trainId - Explicitly selected saved train.
 * @param input - Reviewed input for this operation.
 * @returns An explanation of the current policy, without claiming control or sending speed.
 */
export async function reviewTrainSpeedPolicy(
  client: Client,
  accountId: string,
  layoutId: string,
  locomotiveId: string,
  trainId: string,
  input: Omit<Parameters<Client['operatingPolicy']['previewLocomotive']>[3], 'trainFormationId'>,
) {
  const handling = await client.trainFormations.getHandlingProfile(accountId, trainId);
  const policy = await client.operatingPolicy.previewLocomotive(accountId, layoutId, locomotiveId, {
    ...input, trainFormationId: trainId,
  });
  return { handling, policy };
}