package org.opentrafficsim.road.network.factory.opendrive;
   
   import java.io.Serializable;
   import java.util.ArrayList;
   import java.util.HashMap;
   import java.util.List;
   import java.util.Map;
   
   import org.djunits.unit.LengthUnit;
  import org.djunits.value.vdouble.scalar.Length;
  import org.opentrafficsim.core.network.NetworkException;
  import org.opentrafficsim.road.network.lane.Lane;
  import org.w3c.dom.NamedNodeMap;
  import org.w3c.dom.Node;
  import org.xml.sax.SAXException;
  
  /**
   * <p>
   * Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="http://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * <p>
   * $LastChangedDate: 2015-07-24 02:58:59 +0200 (Fri, 24 Jul 2015) $, @version $Revision: 1147 $, by $Author: averbraeck $,
   * initial version Jul 23, 2015 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   */
  class LaneSectionTag implements Serializable
  {
  
      /** */
      private static final long serialVersionUID = 20150723L;
  
      /** Sequence of the laneSection. */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      int id = 0;
  
      /** Start position (s-coordinate). */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      Length s = null;
  
      /** Left lanes */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      Map<Integer, LaneTag> leftLaneTags = new HashMap<Integer, LaneTag>();
  
      /** Center lanes */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      Map<Integer, LaneTag> centerLaneTags = new HashMap<Integer, LaneTag>();
  
      /** Right lanes */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      Map<Integer, LaneTag> rightLaneTags = new HashMap<Integer, LaneTag>();
  
      /** All lanes */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      Map<Integer, Lane> lanes = new HashMap<Integer, Lane>();
  
      /**
       * Parse the attributes of the road tag. The sub-elements are parsed in separate classes.
       * @param node Node; the top-level road node
       * @param parser OpenDriveNetworkLaneParser; the parser with the lists of information
       * @return the generated RoadTag for further reference
       * @throws SAXException when parsing of the tag fails
       * @throws NetworkException when parsing of the tag fails
       */
      @SuppressWarnings("checkstyle:needbraces")
      static LaneSectionTag parseLaneSection(final Node node, final OpenDriveNetworkLaneParser parser)
              throws SAXException, NetworkException
      {
          NamedNodeMap attributes = node.getAttributes();
          LaneSectionTag laneSectionTag = new LaneSectionTag();
  
          Node s = attributes.getNamedItem("s");
          if (s == null)
              throw new SAXException("LaneSection: missing attribute s");
          laneSectionTag.s = new Length(Double.parseDouble(s.getNodeValue().trim()), LengthUnit.METER);
  
          for (Node leftNode : XMLParser.getNodes(node.getChildNodes(), "left"))
              for (Node laneNode : XMLParser.getNodes(leftNode.getChildNodes(), "lane"))
              {
                  LaneTag laneTag = LaneTag.parseLane(laneNode, parser);
                  laneSectionTag.leftLaneTags.put(laneTag.id, laneTag);
              }
  
          for (Node centerNode : XMLParser.getNodes(node.getChildNodes(), "center"))
              for (Node laneNode : XMLParser.getNodes(centerNode.getChildNodes(), "lane"))
              {
                  LaneTag laneTag = LaneTag.parseLane(laneNode, parser);
                  laneSectionTag.centerLaneTags.put(laneTag.id, laneTag);
              }
  
          for (Node rightNode : XMLParser.getNodes(node.getChildNodes(), "right"))
              for (Node laneNode : XMLParser.getNodes(rightNode.getChildNodes(), "lane"))
              {
                  LaneTag laneTag = LaneTag.parseLane(laneNode, parser);
                  laneSectionTag.rightLaneTags.put(laneTag.id, laneTag);
              }
  
          return laneSectionTag;
      }
  
     /**
      * @param orientation String; Plus or minus orientation, indicated by '+' or '-'
      * @return lanes a list of lanes in the given orientation
      */
     public List<Lane> findLanes(String orientation)
     {
         List<Lane> lanes1 = new ArrayList<Lane>();
         for (int key : this.lanes.keySet())
         {
             Lane lane = this.lanes.get(key);
             if (key < 0)
             {
                 if (orientation.equals("+") && this.rightLaneTags.get(key).type.equals("driving"))
                     lanes1.add(lane);
             }
             else if (key > 0)
             {
                 if (orientation.equals("-") && this.leftLaneTags.get(key).type.equals("driving"))
                     lanes1.add(lane);
             }
 
         }
         if (lanes1.size() != 1)
             System.err.println("Exception in finding lanes");
         return lanes1;
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString()
     {
         return "LaneSectionTag [id=" + this.id + ", s=" + this.s + ", leftLaneTags=" + this.leftLaneTags + ", centerLaneTags="
                 + this.centerLaneTags + ", rightLaneTags=" + this.rightLaneTags + ", lanes=" + this.lanes + "]";
     }
 }