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.jira.producer;
  
  import com.atlassian.jira.rest.client.api.IssueRestClient;
  import com.atlassian.jira.rest.client.api.JiraRestClient;
  import com.atlassian.jira.rest.client.api.domain.Issue;
  import org.apache.camel.Exchange;
  import org.apache.camel.component.jira.JiraEndpoint;
  import org.apache.camel.support.DefaultProducer;
  import org.apache.camel.util.ObjectHelper;
  
  import static org.apache.camel.component.jira.JiraConstants.ISSUE_KEY;
  import static org.apache.camel.component.jira.JiraConstants.ISSUE_WATCHERS_ADD;
  import static org.apache.camel.component.jira.JiraConstants.ISSUE_WATCHERS_REMOVE;
  
  public class WatcherProducer extends DefaultProducer {
  
      public WatcherProducer(JiraEndpoint endpoint) {
          super(endpoint);
      }
  
      @Override
      public void process(Exchange exchange) {
          String issueKey = exchange.getIn().getHeader(ISSUE_KEY, String.class);
          String watchersAdd = exchange.getIn().getHeader(ISSUE_WATCHERS_ADD, String.class);
          String watchersRemove = exchange.getIn().getHeader(ISSUE_WATCHERS_REMOVE, String.class);
          if (issueKey == null) {
              throw new IllegalArgumentException(
                      "Missing exchange input header named 'IssueKey', it should specify the issue key to add/remove watchers to.");
          }
          JiraRestClient client = ((JiraEndpoint) getEndpoint()).getClient();
          boolean hasWatchersToAdd = ObjectHelper.isNotEmpty(watchersAdd);
          boolean hasWatchersToRemove = ObjectHelper.isNotEmpty(watchersRemove);
          if (hasWatchersToAdd || hasWatchersToRemove) {
              IssueRestClient issueClient = client.getIssueClient();
              Issue issue = issueClient.getIssue(issueKey).claim();
              if (hasWatchersToAdd) {
                  String[] watArr = watchersAdd.split(",");
                  for (String s : watArr) {
                      String watcher = s.trim();
                      if (!watcher.isEmpty()) {
                          issueClient.addWatcher(issue.getWatchers().getSelf(), watcher);
                      }
                  }
              }
              if (hasWatchersToRemove) {
                  String[] watArr = watchersRemove.split(",");
                  for (String s : watArr) {
                      String watcher = s.trim();
                      if (!watcher.isEmpty()) {
                          issueClient.removeWatcher(issue.getWatchers().getSelf(), watcher);
                      }
                  }
              }
          }
      }
  }
  