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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.profitbricks.http.parser.server;

import static shaded.com.google.common.base.Preconditions.checkNotNull;

import java.util.Date;

import org.jclouds.date.DateService;
import org.jclouds.profitbricks.domain.AvailabilityZone;
import org.jclouds.profitbricks.domain.DataCenter;
import org.jclouds.profitbricks.domain.OsType;
import org.jclouds.profitbricks.domain.ProvisioningState;
import org.jclouds.profitbricks.domain.Server;
import org.jclouds.profitbricks.http.parser.BaseProfitBricksResponseHandler;
import org.jclouds.profitbricks.http.parser.nic.NicListResponseHandler;
import org.jclouds.profitbricks.http.parser.storage.StorageListResponseHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

public abstract class BaseServerResponseHandler extends BaseProfitBricksResponseHandler {

   protected final StorageListResponseHandler storageListResponseHandler;
   protected final NicListResponseHandler nicListResponseHandler;

   protected DataCenter.Builder dataCenterBuilder;
   protected Server.Builder builder;

   protected final DateService dateService;

   protected boolean useStorageParser = false;
   protected boolean useNicParser = false;

   BaseServerResponseHandler(DateService dateService, StorageListResponseHandler storageListResponseHandler,
           NicListResponseHandler nicListResponseHandler) {
      checkNotNull(dateService, "DateService cannot be null");
      checkNotNull(storageListResponseHandler, "StorageListResponseHandler cannot be null");
      checkNotNull(nicListResponseHandler, "NicListResponseHandler cannot be null");

      this.dateService = dateService;
      this.storageListResponseHandler = storageListResponseHandler;
      this.nicListResponseHandler = nicListResponseHandler;
      this.builder = Server.builder();
      this.dataCenterBuilder = DataCenter.builder();
   }

   @Override
   public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
      if ("connectedStorages".equals(qName))
         useStorageParser = true;
      else if ("nics".equals(qName))
         useNicParser = true;

      if (useStorageParser)
         storageListResponseHandler.startElement(uri, localName, qName, attributes);
      else if (useNicParser)
         nicListResponseHandler.startElement(uri, localName, qName, attributes);
      else
         super.startElement(uri, localName, qName, attributes);
   }

   @Override
   public void characters(char[] ch, int start, int length) {
      if (useStorageParser)
         storageListResponseHandler.characters(ch, start, length);
      else if (useNicParser)
         nicListResponseHandler.characters(ch, start, length);
      else
         super.characters(ch, start, length);
   }

   protected final Date textToIso8601Date() {
      return dateService.iso8601DateOrSecondsDateParse(textToStringValue());
   }

   @Override
   protected void setPropertyOnEndTag(String qName) {
      if ("dataCenterId".equals(qName))
         dataCenterBuilder.id(textToStringValue());
      else if ("dataCenterVersion".equals(qName))
         dataCenterBuilder.version(textToIntValue());
      else if ("serverId".equals(qName))
         builder.id(textToStringValue());
      else if ("serverName".equals(qName))
         builder.name(textToStringValue());
      else if ("cores".equals(qName))
         builder.cores(textToIntValue());
      else if ("ram".equals(qName))
         builder.ram(textToIntValue());
      else if ("provisioningState".equals(qName))
         builder.state(ProvisioningState.fromValue(textToStringValue()));
      else if ("virtualMachineState".equals(qName))
         builder.status(Server.Status.fromValue(textToStringValue()));
      else if ("osType".equals(qName))
         builder.osType(OsType.fromValue(textToStringValue()));
      else if ("availabilityZone".equals(qName))
         builder.availabilityZone(AvailabilityZone.fromValue(textToStringValue()));
      else if ("creationTime".equals(qName))
         builder.creationTime(textToIso8601Date());
      else if ("lastModificationTime".equals(qName))
         builder.lastModificationTime(textToIso8601Date());
      else if ("internetAccess".equals(qName))
         builder.hasInternetAccess(textToBooleanValue());
      else if ("cpuHotPlug".equals(qName))
         builder.isCpuHotPlug(textToBooleanValue());
      else if ("ramHotPlug".equals(qName))
         builder.isRamHotPlug(textToBooleanValue());
      else if ("nicHotPlug".equals(qName))
         builder.isNicHotPlug(textToBooleanValue());
      else if ("nicHotUnPlug".equals(qName))
         builder.isNicHotUnPlug(textToBooleanValue());
      else if ("discVirtioHotPlug".equals(qName))
         builder.isDiscVirtioHotPlug(textToBooleanValue());
      else if ("discVirtioHotUnPlug".equals(qName))
         builder.isDiscVirtioHotUnPlug(textToBooleanValue());
      else if ("activate".equals(qName))
         builder.loadBalanced(textToBooleanValue());
      else if ("balancedNicId".equals(qName))
         builder.balancedNicId(textToStringValue());
   }

}