/*
 * 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 { buildPhraseFilter } from '../../../filter_manager/lib/phrase';
import { buildPhrasesFilter } from '../../../filter_manager/lib/phrases';
import { buildExistsFilter } from '../../../filter_manager/lib/exists';

export function createFilterTerms(aggConfig, key, params) {
  const field = aggConfig.params.field;
  const indexPattern = field.indexPattern;

  if (key === '__other__') {
    const terms = params.terms;

    const phraseFilter = buildPhrasesFilter(field, terms, indexPattern);
    phraseFilter.meta.negate = true;

    const filters = [phraseFilter];

    if (terms.some(term => term === '__missing__')) {
      filters.push(buildExistsFilter(field, indexPattern));
    }

    return filters;
  } else if (key === '__missing__') {
    const existsFilter = buildExistsFilter(field, indexPattern);
    existsFilter.meta.negate = true;
    return existsFilter;
  }
  return buildPhraseFilter(field, key, indexPattern);
}
