/*
    * Copyright 2012-2017 CodeLibs Project and the Others.
    *
    * Licensed 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.
   */
  package org.codelibs.fess.job;
  
  import org.codelibs.fess.es.client.FessEsClient;
  import org.codelibs.fess.mylasta.direction.FessConfig;
  import org.codelibs.fess.util.ComponentUtil;
  import org.elasticsearch.index.query.QueryBuilder;
  import org.elasticsearch.index.query.QueryBuilders;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class PurgeDocJob {
  
      private static final Logger logger = LoggerFactory.getLogger(PurgeDocJob.class);
  
      public String execute() {
          final FessEsClient fessEsClient = ComponentUtil.getFessEsClient();
          final FessConfig fessConfig = ComponentUtil.getFessConfig();
  
          final StringBuilder resultBuf = new StringBuilder();
  
          // clean up
          final QueryBuilder queryBuilder = QueryBuilders.rangeQuery(fessConfig.getIndexFieldExpires()).to("now");
          try {
              fessEsClient.deleteByQuery(fessConfig.getIndexDocumentUpdateIndex(), fessConfig.getIndexDocumentType(), queryBuilder);
  
          } catch (final Exception e) {
              logger.error("Could not delete expired documents: " + queryBuilder.toString(), e);
              resultBuf.append(e.getMessage()).append("\n");
          }
  
          return resultBuf.toString();
      }
  
  }