text: /*
   * Licensed to Elasticsearch B.V. under one or more contributor
   * license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright
   * ownership. Elasticsearch B.V. licenses this file to you under
   * the Apache License, Version 2.0 (the "License"); you may
   * not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import { getSplits } from '../../helpers/get_splits';
  import { getLastMetric } from '../../helpers/get_last_metric';
  import { mapBucket } from '../../helpers/map_bucket';
  import { METRIC_TYPES } from '../../../../../common/metric_types';
  
  export function stdMetric(bucket, panel, series) {
    return next => results => {
      const metric = getLastMetric(series);
  
      if (metric.type === METRIC_TYPES.STD_DEVIATION && metric.mode === 'band') {
        return next(results);
      }
  
      if ([METRIC_TYPES.PERCENTILE_RANK, METRIC_TYPES.PERCENTILE].includes(metric.type)) {
        return next(results);
      }
  
      if (/_bucket$/.test(metric.type)) {
        return next(results);
      }
  
      const fakeResp = {
        aggregations: bucket,
      };
  
      getSplits(fakeResp, panel, series).forEach(split => {
        const data = split.timeseries.buckets.map(mapBucket(metric));
        results.push({
          id: split.id,
          label: split.label,
          data,
        });
      });
  
      return next(results);
    };
  }
  
  