/*
    *  Copyright 2010 Felix Roethenbacher
    *
    *  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 ch.syabru.nagios.broker.impl;
  
  import java.util.Calendar;
  import java.util.Date;
  
  import org.apache.commons.lang.Validate;
  
  import ch.syabru.nagios.broker.ExternalCommand;
  import ch.syabru.nagios.broker.ExternalCommandFactory;
  
  /**
   * Schedule service check command factory.
   *
   * @author Felix Roethenbacher
   *
   */
  public class ScheduleServiceCheckCommandFactory
  implements ExternalCommandFactory
  {
      private String hostName;
      private String serviceDescription;
      private Date checkTime;
      private int delaySeconds;
  
      /**
       * C'tor.
       * @param hostName Host name.
       * @param serviceDescription Service description.
       * @param checkTime Absolute check time, set to null for current time.
       * @param delaySeconds Delay in seconds. Set to 0 for immediate check.
       */
      public ScheduleServiceCheckCommandFactory(String hostName,
              String serviceDescription, Date checkTime, int delaySeconds)
      {
          Validate.notNull(hostName, "hostName must not be null");
          Validate.notNull(serviceDescription,
                  "serviceDescription must not be null");
          this.hostName = hostName;
          this.serviceDescription = serviceDescription;
          this.checkTime = checkTime;
          this.delaySeconds = delaySeconds;
      }
  
      @Override
      public ExternalCommand createCommand() {
          Calendar checkTimeCal = Calendar.getInstance();
          if (checkTime != null)
              checkTimeCal.setTime(checkTime);
          checkTimeCal.add(Calendar.SECOND, delaySeconds);
          return new ScheduleServiceCheckCommand(
                  hostName, serviceDescription, checkTimeCal.getTime());
      }
  
  }