/*
 * Copyright 2012  Research Studios Austria Forschungsges.m.b.H.
 *
 *    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 won.bot.framework.eventbot.action.impl.matcher;

import won.bot.framework.eventbot.EventListenerContext;
import won.bot.framework.eventbot.action.BaseEventBotAction;
import won.bot.framework.eventbot.action.EventBotActionUtils;
import won.bot.framework.eventbot.event.Event;
import won.bot.framework.eventbot.event.impl.matcher.MatcherRegisterFailedEvent;
import won.bot.framework.eventbot.listener.EventListener;

import java.net.URI;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

/**
* User: fkleedorfer
* Date: 28.03.14
*/
public class RegisterMatcherAction extends BaseEventBotAction
{
  private List<URI> registeredNodes = new LinkedList<>();

  public RegisterMatcherAction(final EventListenerContext eventListenerContext)
  {
    super(eventListenerContext);
  }

  @Override
  protected void doRun(Event event, EventListener executingListener) throws Exception
  {
    final Iterator wonNodeUriIterator = getEventListenerContext().getMatcherNodeURISource().getNodeURIIterator();
    while (wonNodeUriIterator.hasNext()){
      URI wonNodeUri = (URI)wonNodeUriIterator.next();
      try {
        if (!registeredNodes.contains(wonNodeUri)) {
          logger.debug("registering matcher on won node {}", wonNodeUri);
          EventBotActionUtils.rememberInNodeListIfNamePresent(getEventListenerContext(), wonNodeUri);
          getEventListenerContext().getMatcherProtocolMatcherService().register(wonNodeUri);
          registeredNodes.add(wonNodeUri);
          logger.info("matcher registered on won node {}", wonNodeUri);
        }
      } catch (Exception e) {
        logger.warn("Error registering matcher at won node {}. Try again later ... Exception was {}", wonNodeUri, e);
        getEventListenerContext().getEventBus().publish(new MatcherRegisterFailedEvent(wonNodeUri));
      }
    }
  }

}