/**
    * Licensed to jclouds, Inc. (jclouds) under one or more
    * contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  jclouds licenses this file
    * to you 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.trmk.vcloud_0_8.xml;
  
  import static org.jclouds.trmk.vcloud_0_8.util.Utils.newReferenceType;
  import static org.jclouds.trmk.vcloud_0_8.util.Utils.putReferenceType;
  import static org.jclouds.util.SaxUtils.cleanseAttributes;
  import static org.jclouds.util.SaxUtils.currentOrNull;
  import static org.jclouds.util.SaxUtils.equalsOrSuffix;
  
  import java.util.Map;
  
  import org.jclouds.http.functions.ParseSax;
  import org.jclouds.trmk.vcloud_0_8.TerremarkVCloudMediaType;
  import org.jclouds.trmk.vcloud_0_8.domain.ReferenceType;
  import org.jclouds.trmk.vcloud_0_8.domain.VDC;
  import org.jclouds.trmk.vcloud_0_8.domain.internal.VDCImpl;
  import org.jclouds.trmk.vcloud_0_8.util.Utils;
  import org.xml.sax.Attributes;
  import org.xml.sax.SAXException;
  
  import com.google.common.collect.Maps;
  
  /**
   * @author Adrian Cole
   */
  public class VDCHandler extends ParseSax.HandlerWithResult<VDC> {
  
     protected StringBuilder currentText = new StringBuilder();
  
     protected ReferenceType vDC;
     protected String description;
  
     protected Map<String, ReferenceType> resourceEntities = Maps.newLinkedHashMap();
     protected Map<String, ReferenceType> availableNetworks = Maps.newLinkedHashMap();
  
     private ReferenceType catalog;
     private ReferenceType publicIps;
     private ReferenceType internetServices;
  
     public VDC getResult() {
        return new VDCImpl(vDC.getName(), vDC.getType(), vDC.getHref(), description, catalog, publicIps,
              internetServices, resourceEntities, availableNetworks);
     }
  
     @Override
     public void startElement(String uri, String localName, String qName, Attributes attrs) throws SAXException {
        Map<String, String> attributes = cleanseAttributes(attrs);
        super.startElement(uri, localName, qName, attrs);
        if (qName.endsWith("Vdc")) {
           vDC = newReferenceType(attributes);
        } else if (qName.endsWith("Network")) {
           putReferenceType(availableNetworks, attributes);
        } else if (qName.endsWith("ResourceEntity")) {
           putReferenceType(resourceEntities, attributes);
        } else if (equalsOrSuffix(qName, "Link")) {
           String name = attributes.get("name");
           if (name.equals("Internet Services")) {
              internetServices = Utils.newReferenceType(attributes);
           } else if (name.equals("Public IPs")) {
              publicIps = Utils.newReferenceType(attributes);
           } else {
              String type = attributes.get("type");
              if (type.equals(TerremarkVCloudMediaType.CATALOG_XML)) {
                 catalog = Utils.newReferenceType(attributes);
              }
           }
        }
     }
  
     public void endElement(String uri, String name, String qName) {
        if (equalsOrSuffix(qName, "Description")) {
           description = currentOrNull(currentText);
        }
        currentText = new StringBuilder();
     }
  
     public void characters(char ch[], int start, int length) {
        currentText.append(ch, start, length);
     }
  }