package loadfromxml;
   
   import java.awt.Dimension;
   import java.io.ByteArrayInputStream;
   import java.io.File;
   import java.io.IOException;
   import java.io.Serializable;
   import java.net.URISyntaxException;
   import java.nio.charset.StandardCharsets;
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  import javax.naming.NamingException;
  import javax.swing.JFileChooser;
  import javax.swing.JOptionPane;
  import javax.swing.filechooser.FileFilter;
  import javax.xml.bind.JAXBException;
  import javax.xml.parsers.ParserConfigurationException;
  
  import org.djunits.value.vdouble.scalar.Duration;
  import org.djunits.value.vdouble.scalar.Length;
  import org.djunits.value.vdouble.scalar.Time;
  import org.opentrafficsim.core.dsol.AbstractOTSModel;
  import org.opentrafficsim.core.dsol.OTSAnimator;
  import org.opentrafficsim.core.dsol.OTSModelInterface;
  import org.opentrafficsim.core.dsol.OTSSimulationException;
  import org.opentrafficsim.core.dsol.OTSSimulatorInterface;
  import org.opentrafficsim.core.geometry.OTSGeometryException;
  import org.opentrafficsim.core.gtu.GTUException;
  import org.opentrafficsim.core.gtu.GTUType;
  import org.opentrafficsim.core.network.NetworkException;
  import org.opentrafficsim.draw.core.OTSDrawingException;
  import org.opentrafficsim.road.network.OTSRoadNetwork;
  import org.opentrafficsim.road.network.factory.xml.XmlParserException;
  import org.opentrafficsim.road.network.factory.xml.parser.XmlNetworkLaneParser;
  import org.opentrafficsim.road.network.lane.CrossSectionLink;
  import org.opentrafficsim.road.network.lane.conflict.ConflictBuilder;
  import org.opentrafficsim.road.network.lane.conflict.LaneCombinationList;
  import org.opentrafficsim.swing.gui.OTSAnimationPanel;
  import org.opentrafficsim.swing.gui.OTSSimulationApplication;
  import org.xml.sax.SAXException;
  
  import nl.tudelft.simulation.dsol.SimRuntimeException;
  import nl.tudelft.simulation.dsol.model.inputparameters.InputParameterException;
  import nl.tudelft.simulation.jstats.streams.MersenneTwister;
  import nl.tudelft.simulation.jstats.streams.StreamInterface;
  import nl.tudelft.simulation.language.DSOLException;
  
  /**
   * Select a OTS-network XML file, load it and run it.
   * <p>
   * Copyright (c) 2013-2020 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/node/13">OpenTrafficSim License</a>.
   * <p>
   * @version $Revision$, $LastChangedDate$, by $Author$, initial version Apr 21, 2017 <br>
   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
   * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
   */
  public class LoadXML extends OTSSimulationApplication<OTSModelInterface>
  {
      /** */
      private static final long serialVersionUID = 20170421L;
  
      /**
       * @param model OTSModelInterface; the model
       * @param animationPanel OTSAnimationPanel; the animation panel
       * @throws OTSDrawingException on drawing error
       */
      public LoadXML(final OTSModelInterface model, final OTSAnimationPanel animationPanel) throws OTSDrawingException
      {
          super(model, animationPanel);
      }
  
      /**
       * Load a network from an XML file; program entry point.
       * @param args String[]; the command line arguments; optional name of file to load
       * @throws IOException when the file could not be read
       * @throws InputParameterException should never happen
       * @throws OTSSimulationException when an error occurs during simulation
       * @throws NamingException when a name collision is detected
       * @throws SimRuntimeException should never happen
       * @throws DSOLException when simulator does not implement AnimatorInterface
       */
      public static void main(final String[] args) throws IOException, SimRuntimeException, NamingException,
              OTSSimulationException, InputParameterException, DSOLException
      {
          String fileName;
          String xml;
          if (0 == args.length)
          {
              JFileChooser fileChooser = new JFileChooser();
              fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
              fileChooser.addChoosableFileFilter(new FileFilter()
              {
  
                  @Override
                 public boolean accept(final File f)
                 {
                     if (f.isDirectory())
                     {
                         return true;
                     }
                     String name = f.getName();
                     int length = name.length();
                     if (length < 5)
                     {
                         return false;
                     }
                     String type = name.substring(length - 4);
                     return type.equalsIgnoreCase(".xml");
                 }
 
                 @Override
                 public String getDescription()
                 {
                     return "XML files";
                 }
             });
             fileChooser.removeChoosableFileFilter(fileChooser.getAcceptAllFileFilter());
             if (JFileChooser.APPROVE_OPTION != fileChooser.showOpenDialog(null))
             {
                 System.out.println("No file chosen; exiting");
                 System.exit(0);
             }
             fileName = fileChooser.getSelectedFile().getAbsolutePath();
         }
         else
         {
             fileName = args[0];
         }
         xml = new String(Files.readAllBytes(Paths.get(fileName)));
         try
         {
             OTSAnimator simulator = new OTSAnimator("LoadXML");
             XMLModel xmlModel = new XMLModel(simulator, "XML model", "Model built from XML file " + fileName, xml);
             Map<String, StreamInterface> map = new LinkedHashMap<>();
             // TODO: This seed is Aimsun specific.
             map.put("generation", new MersenneTwister(6L));
             simulator.initialize(Time.ZERO, Duration.ZERO, Duration.instantiateSI(3600.0), xmlModel, map);
             OTSAnimationPanel animationPanel = new OTSAnimationPanel(xmlModel.getNetwork().getExtent(), new Dimension(800, 600),
                     simulator, xmlModel, DEFAULT_COLORER, xmlModel.getNetwork());
             new LoadXML(xmlModel, animationPanel);
         }
         catch (SimRuntimeException | OTSDrawingException sre)
         {
             JOptionPane.showMessageDialog(null, sre.getMessage(), "Exception occured", JOptionPane.ERROR_MESSAGE);
             System.exit(1);
         }
     }
 
     /**
      * The Model.
      */
     static class XMLModel extends AbstractOTSModel
     {
         /** */
         private static final long serialVersionUID = 20170421L;
 
         /** The network. */
         private OTSRoadNetwork network;
 
         /** The XML. */
         private final String xml;
 
         /**
          * @param simulator OTSSimulatorInterface; the simulator
          * @param shortName String; name of the model
          * @param description String; description of the model
          * @param xml String; the XML string
          */
         XMLModel(final OTSSimulatorInterface simulator, final String shortName, final String description, final String xml)
         {
             super(simulator, shortName, description);
             this.xml = xml;
         }
 
         /** {@inheritDoc} */
         @Override
         public void constructModel() throws SimRuntimeException
         {
             this.network = new OTSRoadNetwork(getShortName(), true);
             try
             {
                 XmlNetworkLaneParser.build(new ByteArrayInputStream(this.xml.getBytes(StandardCharsets.UTF_8)), this.network,
                         getSimulator(), false);
                 LaneCombinationList ignoreList = new LaneCombinationList();
                 try
                 {
                     // TODO: These links are Aimsun Barcelona network specific.
                     ignoreList.addLinkCombination((CrossSectionLink) this.network.getLink("928_J5"),
                             (CrossSectionLink) this.network.getLink("928_J6"));
                     ignoreList.addLinkCombination((CrossSectionLink) this.network.getLink("925_J1"),
                             (CrossSectionLink) this.network.getLink("925_J2"));
                 }
                 catch (NullPointerException npe)
                 {
                     // Ignore exception that is expected to happen when the network is NOT the Barcelona test network
                 }
                 LaneCombinationList permittedList = new LaneCombinationList();
                 ConflictBuilder.buildConflicts(this.network, this.network.getGtuType(GTUType.DEFAULTS.VEHICLE), getSimulator(),
                         new ConflictBuilder.FixedWidthGenerator(Length.instantiateSI(2.0)), ignoreList, permittedList);
             }
             catch (NetworkException | OTSGeometryException | JAXBException | URISyntaxException | XmlParserException
                     | SAXException | ParserConfigurationException | GTUException exception)
             {
                 exception.printStackTrace();
                 // Abusing the SimRuntimeException to propagate the message to the main method (the problem could actually be a
                 // parsing problem)
                 throw new SimRuntimeException(exception.getMessage());
             }
         }
 
         /** {@inheritDoc} */
         @Override
         public OTSRoadNetwork getNetwork()
         {
             return this.network;
         }
 
         /** {@inheritDoc} */
         @Override
         public Serializable getSourceId()
         {
             return "LoadXML.Model";
         }
 
     }
 
 }