/*
    * Copyright 2001-2008 The Apache Software Foundation.
    * 
    * 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 org.apache.juddi.subscription.notify;
  
  import java.lang.reflect.InvocationTargetException;
  import java.net.URISyntaxException;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.juddi.ClassUtil;
  import org.apache.juddi.model.BindingTemplate;
  import org.apache.juddi.model.TmodelInstanceInfo;
  /**
   * The factory figures out which Notifier class to instantiate.
   * 
   * @author kstam
   *
   */
  public class NotifierFactory {
  	
  	Log log = LogFactory.getLog(this.getClass());
  	public static final String UDDI_TRANSPORT_KEY = "uddi:uddi.org:transport:";
  	
  	public Notifier getNotifier(BindingTemplate bindingTemplate) 
  		throws URISyntaxException, IllegalArgumentException, SecurityException, 
  		InstantiationException, IllegalAccessException, InvocationTargetException, 
  		NoSuchMethodException, ClassNotFoundException 
  	{
  	    String notifierClassName = null;
  		for (TmodelInstanceInfo tModelInstanceInfo : bindingTemplate.getTmodelInstanceInfos()) {
  			if (tModelInstanceInfo.getTmodelKey().startsWith(UDDI_TRANSPORT_KEY)) {
  				log.debug("Found transport tModelKey " + tModelInstanceInfo.getTmodelKey());
  				String transport = tModelInstanceInfo.getTmodelKey().substring(UDDI_TRANSPORT_KEY.length(),tModelInstanceInfo.getTmodelKey().length());
  				transport = transport.replaceAll("-", "_");
  				notifierClassName = "org.apache.juddi.subscription.notify." + transport.toUpperCase() +  "Notifier";
  				break;
  			}
  		}
  		if (notifierClassName == null) {
  			//JUDDI-496 TODO make sure the tModel is loaded
  			log.warn("The bindingTemplate " + bindingTemplate.getEntityKey() + " does not contain a tModel to define its type of transport. Defaulting " 
  				  +	"to http.");
                          //JUDDI-596, attempt http transport, even if a transport isn't specified
  			notifierClassName =   "org.apache.juddi.subscription.notify.HTTPNotifier";
  		}
  		if (log.isDebugEnabled()) log.debug("Going find and instantiate notifier class: " + notifierClassName);
  		
  		@SuppressWarnings("unchecked")
  		Class<Notifier> notifierClass = (Class<Notifier>) ClassUtil.forName(notifierClassName,this.getClass());
  		Notifier notifier = notifierClass.getConstructor(BindingTemplate.class).newInstance(bindingTemplate);
  	    return notifier;
  	}
  	
  }