content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF 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.
   */
  package org.apache.camel.component.twitter.search;
  
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.component.twitter.TwitterEndpoint;
  import org.apache.camel.component.twitter.consumer.AbstractTwitterConsumerHandler;
  import org.apache.camel.component.twitter.consumer.TwitterEventType;
  import org.apache.camel.util.ObjectHelper;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import twitter4j.Twitter;
  import twitter4j.TwitterException;
  import twitter4j.v1.GeoLocation;
  import twitter4j.v1.Query;
  import twitter4j.v1.Query.Unit;
  import twitter4j.v1.QueryResult;
  import twitter4j.v1.Status;
  
  /**
   * Consumes search requests
   */
  public class SearchConsumerHandler extends AbstractTwitterConsumerHandler {
  
      private static final Logger LOG = LoggerFactory.getLogger(SearchConsumerHandler.class);
  
      private String keywords;
  
      public SearchConsumerHandler(TwitterEndpoint te, String keywords) {
          super(te);
          this.keywords = keywords;
      }
  
      @Override
      public List<Exchange> pollConsume() throws TwitterException {
          String keywords = this.keywords;
  
          Query query;
  
          if (keywords != null && !keywords.isBlank()) {
              query = Query.of(keywords);
              LOG.debug("Searching twitter with keywords: {}", keywords);
          } else {
              query = Query.of("");
              LOG.debug("Searching twitter without keywords.");
          }
  
          if (endpoint.getProperties().isFilterOld()) {
              query.sinceId(getLastId());
          }
  
          return search(query);
      }
  
      @Override
      public List<Exchange> directConsume() throws TwitterException {
          String keywords = this.keywords;
          if (keywords == null || !keywords.isBlank()) {
              return Collections.emptyList();
          }
          Query query = Query.of(keywords);
  
          LOG.debug("Searching twitter with keywords: {}", keywords);
          return search(query);
      }
  
      private List<Exchange> search(Query query) throws TwitterException {
          Integer numberOfPages = 1;
  
          if (ObjectHelper.isNotEmpty(endpoint.getProperties().getLang())) {
              query.lang(endpoint.getProperties().getLang());
          }
  
          if (ObjectHelper.isNotEmpty(endpoint.getProperties().getCount())) {
              query.count(endpoint.getProperties().getCount());
          }
  
          if (ObjectHelper.isNotEmpty(endpoint.getProperties().getNumberOfPages())) {
              numberOfPages = endpoint.getProperties().getNumberOfPages();
          }
  
          if (ObjectHelper.isNotEmpty(endpoint.getProperties().getLatitude())
                  && ObjectHelper.isNotEmpty(endpoint.getProperties().getLongitude())
                  && ObjectHelper.isNotEmpty(endpoint.getProperties().getRadius())) {
              GeoLocation location
                      = GeoLocation.of(endpoint.getProperties().getLatitude(), endpoint.getProperties().getLongitude());
              query.geoCode(location, endpoint.getProperties().getRadius(),
                      Unit.valueOf(endpoint.getProperties().getDistanceMetric()));
  
              LOG.debug("Searching with additional geolocation parameters.");
          }
  
          LOG.debug("Searching with {} pages.", numberOfPages);
  
          Twitter twitter = getTwitter();
          QueryResult qr = twitter.v1().search().search(query);
          List<Status> tweets = qr.getTweets();
  
          for (int i = 1; i < numberOfPages; i++) {
              if (!qr.hasNext()) {
                  break;
              }
  
              qr = twitter.v1().search().search(qr.nextQuery());
              tweets.addAll(qr.getTweets());
          }
  
          if (endpoint.getProperties().isFilterOld()) {
              for (Status status : tweets) {
                  setLastIdIfGreater(status.getId());
              }
          }
  
          return TwitterEventType.STATUS.createExchangeList(endpoint, tweets);
      }
  
  }
  