/**
 * Copyright (C) 2003-2007 eXo Platform SAS.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see<http://www.gnu.org/licenses/>.
 **/
package org.exoplatform.forum.service.conf;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.exoplatform.forum.common.CommonUtils;
import org.exoplatform.job.MultiTenancyJob;
import org.exoplatform.forum.service.ForumService;
import org.exoplatform.forum.service.SendMessageInfo;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.exoplatform.services.mail.MailService;
import org.exoplatform.services.mail.Message;
import org.quartz.JobExecutionContext;

public class SendMailJob extends MultiTenancyJob {
  private static Log log_ = ExoLogger.getLogger("job.forum.SendMailJob");

  @Override
  public Class<? extends MultiTenancyTask> getTask() {
    return SendMailTask.class;
  }

  public class SendMailTask extends MultiTenancyTask {

    public SendMailTask(JobExecutionContext context, String repoName) {
      super(context, repoName);
    }

    @Override
    public void run() {
      super.run();
      try {
        MailService mailService = (MailService) container.getComponentInstanceOfType(MailService.class);
        ForumService forumService = (ForumService) container.getComponentInstanceOfType(ForumService.class);
        Iterator<SendMessageInfo> iter = forumService.getPendingMessages();
        int countEmail = 0;
        while (iter.hasNext()) {
          try {
            SendMessageInfo messageInfo = iter.next();
            List<String> emailAddresses = messageInfo.getEmailAddresses();
            Message message = messageInfo.getMessage();
            if (message != null && emailAddresses != null && emailAddresses.size() > 0) {
              message.setFrom(CommonUtils.makeNotificationSender(message.getFrom()));
              List<String> sentMessages = new ArrayList<String>();
              for (String address : emailAddresses) {
                if (!sentMessages.contains(address)) {
                  message.setTo(address);
                  mailService.sendMessage(message);
                  sentMessages.add(address);
                  countEmail++;
                }
              }
            }
          } catch (Exception e) {
            log_.error("Could not send email notification", e);
          }
        }
        if (log_.isInfoEnabled() && countEmail > 0) {
          log_.info("\n\nEmail notifications has been sent to " + countEmail + " addresses");
        }
      } catch (Exception e) {
        log_.warn("\n\n Unable send email notification ");
      }
    }

  }
}
