"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.encodeHitVersion = void 0;
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

/**
 * Very similar to the encode_hit_version from saved object system from here:
 * src/core/server/saved_objects/version/encode_hit_version.ts
 *
 * with the most notably change is that it doesn't do any throws but rather just returns undefined
 * if _seq_no or _primary_term does not exist.
 * @param response The response to encode into a version by using _seq_no and _primary_term
 */
const encodeHitVersion = hit => {
  // Have to do this "as cast" here as these two types aren't included in the SearchResponse hit type
  const {
    _seq_no: seqNo,
    _primary_term: primaryTerm
  } = hit;
  if (seqNo == null || primaryTerm == null) {
    return undefined;
  } else {
    return Buffer.from(JSON.stringify([seqNo, primaryTerm]), 'utf8').toString('base64');
  }
};
exports.encodeHitVersion = encodeHitVersion;