package org.opentrafficsim.road.network.factory.xml.old;
   
   import org.djunits.unit.AccelerationUnit;
   import org.djunits.unit.SpeedUnit;
   import org.djunits.value.vdouble.scalar.Acceleration;
   import org.djunits.value.vdouble.scalar.Speed;
   import org.opentrafficsim.core.animation.gtu.colorer.AccelerationGTUColorer;
   import org.opentrafficsim.core.animation.gtu.colorer.GTUColorer;
   import org.opentrafficsim.core.animation.gtu.colorer.IDGTUColorer;
  import org.opentrafficsim.core.animation.gtu.colorer.SpeedGTUColorer;
  import org.opentrafficsim.core.animation.gtu.colorer.SwitchableGTUColorer;
  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 28, 2015 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   */
  final class GTUColorerTag
  {
      /** Utility class. */
      private GTUColorerTag()
      {
          // do not instantiate
      }
  
      /** default colorer, optionally set by XMLNetworkLaneParser */
      // TODO solve hack in better xml spec
      static GTUColorer defaultColorer = null;
  
      /**
       * Parses the right GTUColorer from ID|SPEED|ACCELERATION|LANECHANGEURGE|SWITCHABLE.
       * @param name String; name of the GTUColorer
       * @param globalTag GlobalTag; to define the default parameters of the colorers
       * @return the corresponding GTUColorer
       * @throws SAXException in case the name does not correspond to a known GTUColorer
       */
      static GTUColorer parseGTUColorer(final String name, final GlobalTag globalTag) throws SAXException
      {
          switch (name)
          {
              case "ID":
                  return new IDGTUColorer();
  
              case "SPEED":
                  return makeSpeedGTUColorer(globalTag);
  
              case "ACCELERATION":
                  return makeAccelerationGTUColorer(globalTag);
  
              case "SWITCHABLE":
                  return makeSwitchableGTUColorer(globalTag);
  
              default:
                  throw new SAXException("GTUCOLORER: unknown name " + name + " not one of ID|SPEED|ACCELERATION|SWITCHABLE");
          }
      }
  
      /**
       * @param globalTag GlobalTag; to define the default parameters of the colorers
       * @return the corresponding GTUColorer
       */
      static GTUColorer makeSpeedGTUColorer(final GlobalTag globalTag)
      {
          if (defaultColorer != null)
              return defaultColorer;
          if (globalTag.speedGTUColorerMaxSpeed != null)
          {
              return new SpeedGTUColorer(globalTag.speedGTUColorerMaxSpeed);
          }
          return new SpeedGTUColorer(new Speed(100.0, SpeedUnit.KM_PER_HOUR));
      }
  
      /**
       * @param globalTag GlobalTag; to define the default parameters of the colorers
       * @return the corresponding GTUColorer
       */
      static GTUColorer makeAccelerationGTUColorer(final GlobalTag globalTag)
      {
          if (defaultColorer != null)
              return defaultColorer;
          // TODO use parameters for AccelerationGTUColorer
          return new AccelerationGTUColorer(new Acceleration(1.0, AccelerationUnit.METER_PER_SECOND_2),
                  new Acceleration(1.0, AccelerationUnit.METER_PER_SECOND_2));
      }
  
      /**
       * @param globalTag GlobalTag; to define the default parameters of the colorers
       * @return the corresponding GTUColorer
       */
      static GTUColorer makeSwitchableGTUColorer(final GlobalTag globalTag)
      {
          if (defaultColorer != null)
              return defaultColorer;
          GTUColorer[] gtuColorers =
                 new GTUColorer[] {new IDGTUColorer(), makeSpeedGTUColorer(globalTag), makeAccelerationGTUColorer(globalTag)};
         // TODO default colorer
         return new SwitchableGTUColorer(0, gtuColorers);
     }
 }