/**
    *
    * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com>
    *
    * ====================================================================
    * 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.jclouds.savvis.vpdc.xml;
  
  import static org.jclouds.util.SaxUtils.currentOrNull;
  import static org.jclouds.util.SaxUtils.equalsOrSuffix;
  
  import javax.inject.Inject;
  
  import org.jclouds.http.functions.ParseSax;
  import org.jclouds.savvis.vpdc.domain.FirewallService;
  import org.xml.sax.Attributes;
  import org.xml.sax.SAXException;
  
  /**
   * @author Kedar Dave
   */
  public class FirewallServiceHandler extends ParseSax.HandlerWithResult<FirewallService> {
     protected StringBuilder currentText = new StringBuilder();
     private FirewallRuleHandler firewallRuleHandler;
     private FirewallService.Builder builder = FirewallService.builder();
     boolean inFirewallService;
     boolean inFirewallRule;
  
     @Inject
     public FirewallServiceHandler(FirewallRuleHandler firewallRuleHandler) {
        this.firewallRuleHandler = firewallRuleHandler;
     }
  
     public FirewallService getResult() {
        try {
           return builder.build();
        } finally {
           builder = FirewallService.builder();
        }
     }
  
     public void startElement(String uri, String localName, String qName, Attributes attrs) throws SAXException {
        if (equalsOrSuffix(qName, "FirewallService")) {
           inFirewallService = true;
        } else if (equalsOrSuffix(qName, "FirewallRule")) {
           inFirewallRule = true;
           firewallRuleHandler.startElement(uri, localName, qName, attrs);
        }
     }
  
     @Override
     public void endElement(String uri, String localName, String qName) throws SAXException {
        if (equalsOrSuffix(qName, "FirewallService")) {
           inFirewallService = false;
        } else if (equalsOrSuffix(qName, "FirewallRule")) {
           builder.firewallRule(firewallRuleHandler.getResult());
           inFirewallRule = false;
        } else if (equalsOrSuffix(qName, "isEnabled")) {
           if (inFirewallService) {
              String current = currentOrNull(currentText);
              if (current != null) {
                 builder.isEnabled(Boolean.parseBoolean(current));
              }
           }
        }
  
        if (inFirewallRule) {
           firewallRuleHandler.endElement(uri, localName, qName);
        }
        currentText = new StringBuilder();
     }
  
     @Override
     public void characters(char ch[], int start, int length) {
        currentText.append(ch, start, length);
        firewallRuleHandler.characters(ch, start, length);
     }
  
  }