/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License;
 * you may not use this file except in compliance with the Elastic License.
 */

import { get } from 'lodash';
import moment from 'moment';
import { checkParam } from '../error_missing_required';
import { ElasticsearchMetric } from '../metrics';
import { createQuery } from '../create_query';

export function handleResponse(response) {
  const isEnabled = get(response, 'hits.hits[0]._source.stack_stats.xpack.ccr.enabled');
  const isAvailable = get(response, 'hits.hits[0]._source.stack_stats.xpack.ccr.available');
  return isEnabled && isAvailable;
}

export async function checkCcrEnabled(req, esIndexPattern) {
  checkParam(esIndexPattern, 'esIndexPattern in getNodes');

  const start = moment.utc(req.payload.timeRange.min).valueOf();
  const end = moment.utc(req.payload.timeRange.max).valueOf();

  const clusterUuid = req.params.clusterUuid;
  const metricFields = ElasticsearchMetric.getMetricFields();

  const params = {
    index: esIndexPattern,
    size: 1,
    ignoreUnavailable: true,
    body: {
      query: createQuery({
        type: 'cluster_stats',
        start,
        end,
        clusterUuid,
        metric: metricFields
      }),
      sort: [ { timestamp: { order: 'desc' } } ]
    },
    filterPath: [
      'hits.hits._source.stack_stats.xpack.ccr',
    ]
  };

  const { callWithRequest } = req.server.plugins.elasticsearch.getCluster('monitoring');
  const response = await callWithRequest(req, 'search', params);
  return handleResponse(response);
}