/*
    * Copyright 2005-2008 The Kuali Foundation
    * 
    * 
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
   * 
   * 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.kuali.rice.ksb.messaging;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.config.ConfigContext;
  import org.springframework.beans.factory.BeanInitializationException;
  
  /**
   * A KSBExporter which only exports the service if the specified property is set
   * to true.
   * 
   * @author Kuali Rice Team (kuali-rice@googlegroups.com)
   */
  public class PropertyConditionalKSBExporter extends KSBExporter {
  
  	private List<String> exportIf = new ArrayList<String>();
  	private List<String> exportUnless = new ArrayList<String>();
  	private boolean exportIfPropertyNotSet = true;
  
  	public void afterPropertiesSet() throws Exception {
  		if (shouldRemoteThisService()) {
  			super.afterPropertiesSet();
  		}
  	}
  	
  	protected boolean shouldRemoteThisService() throws Exception {
  		if (exportIf.isEmpty() && exportUnless.isEmpty()) {
  			return true;
  		}
  		boolean remoteThisService = false;
  		String serviceValue = null;
  		// Check the value in the clients config file for services in the list
  		// of property named 'exportIf' loaded by Spring.
  		// if any are ="true" then set boolean to true and exit loop, so far the
  		// service will be published.
  		for (String expIf : exportIf) {
  			serviceValue = ConfigContext.getCurrentContextConfig().getProperty(expIf);
  			// if any are true, set boolean and exit loop.
  			if (!StringUtils.isBlank(serviceValue)) {
  				remoteThisService = new Boolean(serviceValue);
  				if (remoteThisService) {
  					break;
  				}
  			} else if (exportIfPropertyNotSet) {
  				remoteThisService = true;
  				break;
  			}
  		}
  		// Check a second list, if any are ="true" DON"T publish the service.
  		for (String expUnless : exportUnless) {
  			serviceValue = ConfigContext.getCurrentContextConfig()
  					.getProperty(expUnless);
  			// if any are true, set boolean and exit loop.
  			if (!StringUtils.isBlank(serviceValue)) {
  				remoteThisService = new Boolean(serviceValue);
  				if (remoteThisService) {
  					remoteThisService = new Boolean("false");
  					break;
  				}
  			}
  		}
  		return remoteThisService;
  	}
  
  	public List getExportIf() {
  		return this.exportIf;
  	}
  
  	public void setExportIf(List exportIf) throws BeanInitializationException {
  		this.exportIf = exportIf;
  	}
  
  	public List getExportUnless() {
  		return this.exportUnless;
  	}
  
  	public void setExportUnless(List exportUnless)
  			throws BeanInitializationException {
  		this.exportUnless = exportUnless;
  	}
  
 	public boolean isExportIfPropertyNotSet() {
 		return this.exportIfPropertyNotSet;
 	}
 
 	public void setExportIfPropertyNotSet(boolean exportIfPropertyNotSet) {
 		this.exportIfPropertyNotSet = exportIfPropertyNotSet;
 	}
 
 }