package org.opentrafficsim.web.test;
   
   import java.io.Serializable;
   import java.net.URL;
   import java.rmi.RemoteException;
   
   import javax.naming.NamingException;
   
   import org.djunits.unit.DurationUnit;
  import org.djunits.unit.LengthUnit;
  import org.djunits.value.vdouble.scalar.Duration;
  import org.djunits.value.vdouble.scalar.Length;
  import org.djutils.io.URLResource;
  import org.opentrafficsim.core.dsol.AbstractOTSModel;
  import org.opentrafficsim.core.dsol.OTSSimulatorInterface;
  import org.opentrafficsim.core.gtu.GTUType;
  import org.opentrafficsim.core.network.NetworkException;
  import org.opentrafficsim.draw.road.TrafficLightAnimation;
  import org.opentrafficsim.road.network.OTSRoadNetwork;
  import org.opentrafficsim.road.network.factory.xml.parser.XmlNetworkLaneParser;
  import org.opentrafficsim.road.network.lane.CrossSectionLink;
  import org.opentrafficsim.road.network.lane.Lane;
  import org.opentrafficsim.road.network.lane.conflict.ConflictBuilder;
  import org.opentrafficsim.road.network.lane.object.trafficlight.SimpleTrafficLight;
  import org.opentrafficsim.road.network.lane.object.trafficlight.TrafficLightColor;
  
  import nl.tudelft.simulation.dsol.SimRuntimeException;
  
  /**
   * TJunctionModel.java. <br>
   * <br>
   * Copyright (c) 2003-2018 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See
   * for project information <a href="https://www.simulation.tudelft.nl/" target="_blank">www.simulation.tudelft.nl</a>. The
   * source code and binary code of this software is proprietary information of Delft University of Technology.
   * @author <a href="https://www.tudelft.nl/averbraeck" target="_blank">Alexander Verbraeck</a>
   */
  public class TJunctionModel extends AbstractOTSModel
  {
      /** */
      private static final long serialVersionUID = 20161211L;
  
      /** The network. */
      private OTSRoadNetwork network;
  
      /**
       * @param simulator OTSSimulatorInterface; the simulator for this model
       */
      public TJunctionModel(final OTSSimulatorInterface simulator)
      {
          super(simulator);
      }
  
      /** {@inheritDoc} */
      @Override
      public void constructModel() throws SimRuntimeException
      {
          try
          {
              URL xmlURL = URLResource.getResource("/xml/TJunction.xml");
              this.network = new OTSRoadNetwork("TJunction", true, getSimulator());
              XmlNetworkLaneParser.build(xmlURL, this.network, false);
  
              // add conflicts
              // ((CrossSectionLink) this.network.getLink("SCEC")).setPriority(Priority.STOP);
              // ((CrossSectionLink) this.network.getLink("SCWC")).setPriority(Priority.STOP);
              ConflictBuilder.buildConflicts(this.network, this.network.getGtuType(GTUType.DEFAULTS.VEHICLE), this.simulator,
                      new ConflictBuilder.FixedWidthGenerator(new Length(2.0, LengthUnit.SI)));
  
              // add trafficlight after
              Lane lane = ((CrossSectionLink) this.network.getLink("ECE")).getLanes().get(0);
              SimpleTrafficLight trafficLight =
                      new SimpleTrafficLight("light", lane, new Length(50.0, LengthUnit.SI), this.simulator);
  
              try
              {
                  new TrafficLightAnimation(trafficLight, this.simulator);
              }
              catch (RemoteException | NamingException exception)
              {
                  throw new NetworkException(exception);
              }
              trafficLight.setTrafficLightColor(TrafficLightColor.RED);
              changePhase(trafficLight);
  
          }
          catch (Exception exception)
          {
              exception.printStackTrace();
          }
      }
  
      /**
       * Changes color of traffic light.
       * @param trafficLight SimpleTrafficLight; traffic light
       * @throws SimRuntimeException scheduling error
       */
      private void changePhase(final SimpleTrafficLight trafficLight) throws SimRuntimeException
      {
          switch (trafficLight.getTrafficLightColor())
         {
             case RED:
             {
                 trafficLight.setTrafficLightColor(TrafficLightColor.GREEN);
                 this.simulator.scheduleEventRel(new Duration(30.0, DurationUnit.SECOND), this, this, "changePhase",
                         new Object[] {trafficLight});
                 break;
             }
             case YELLOW:
             {
                 trafficLight.setTrafficLightColor(TrafficLightColor.RED);
                 this.simulator.scheduleEventRel(new Duration(56.0, DurationUnit.SECOND), this, this, "changePhase",
                         new Object[] {trafficLight});
                 break;
             }
             case GREEN:
             {
                 trafficLight.setTrafficLightColor(TrafficLightColor.YELLOW);
                 this.simulator.scheduleEventRel(new Duration(4.0, DurationUnit.SECOND), this, this, "changePhase",
                         new Object[] {trafficLight});
                 break;
             }
             default:
             {
                 //
             }
         }
     }
 
     /** {@inheritDoc} */
     @Override
     public OTSRoadNetwork getNetwork()
     {
         return this.network;
     }
 
     /** {@inheritDoc} */
     @Override
     public Serializable getSourceId()
     {
         return "TJunctionModel";
     }
 }