package org.opentrafficsim.core.gtu;
   
   import java.io.File;
   import java.io.PrintWriter;
   
   import org.djunits.value.vdouble.scalar.Duration;
   import org.djunits.value.vdouble.scalar.Time;
   import org.djutils.exceptions.Throw;
   import org.opentrafficsim.core.dsol.OTSSimulatorInterface;
  import org.opentrafficsim.core.network.OTSNetwork;
  
  import nl.tudelft.simulation.dsol.SimRuntimeException;
  import nl.tudelft.simulation.language.d3.DirectedPoint;
  
  /**
   * GTUDUmper; create a text file with the locations, directions and speeds of all GTUs at regular intervals.
   * <p>
   * Copyright (c) 2019-2020 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 July 5, 2019 <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 GTUDumper
  {
      /**
       * Write all GTU positions in a file.
       */
      public void dump()
      {
          try
          {
              Time now = this.simulator.getSimulatorTime();
              String fileName = String.format("%s%08.2f.txt", fileNamePrefix, now.si);
              PrintWriter pw = new PrintWriter(new File(fileName));
              for (GTU gtu : this.network.getGTUs())
              {
                  DirectedPoint dp = gtu.getOperationalPlan().getLocation(now);
                  pw.format("%s position %.3f,%.3f dir=%5.1f speed %s\n", gtu.toString(), dp.x, dp.y,
                          Math.toDegrees(dp.getRotZ()), gtu.getSpeed());
              }
              pw.close();
              this.simulator.scheduleEventRel(this.interval, this, this, "dump", new Object[] {});
          }
          catch (Exception e)
          {
              e.printStackTrace();
          }
      }
  
      /** Interval time between dumps. */
      private final Duration interval;
  
      /** The network with the GTUs to dump. */
      private final OTSNetwork network;
  
      /** Directory and first part of the file names. */
      private final String fileNamePrefix;
  
      /** The simulator. */
      private final OTSSimulatorInterface simulator;
  
      /**
       * Construct a new GTUDumper.
       * @param firstDumpTime Time; the time of the first dump
       * @param interval Duration; the interval until each subsequent dump
       * @param network OTSNetwork; the network (that will contain the GTUs to dump)
       * @param fileNamePrefix String; directory and first part if the file names; the simulation time of the dump will be
       *            appended to the file name. The file type will be .txt
       * @throws SimRuntimeException when scheduling the first dump time fails
       */
      public GTUDumper(final Time firstDumpTime, final Duration interval, final OTSNetwork network,
              final String fileNamePrefix) throws SimRuntimeException
      {
          Throw.whenNull(network, "Network may not be null");
          this.simulator = network.getSimulator();
          Throw.whenNull(firstDumpTime, "firstDumpTime may not be null");
          Throw.when(firstDumpTime.lt(this.simulator.getSimulatorTime()), RuntimeException.class,
                  "firstDumptTime may not be before current simulator time");
          Throw.whenNull(interval, "interval may not be null");
          Throw.when(interval.le(Duration.ZERO), RuntimeException.class, "Duration must be positive");
          Throw.whenNull(fileNamePrefix, "fileNamePrefix may not be null");
          this.interval = interval;
          this.network = network;
          this.fileNamePrefix = fileNamePrefix;
          simulator.scheduleEventAbs(firstDumpTime, this, this, "dump", new Object[] {});
      }
  
      /** {@inheritDoc} */
      @Override
      public String toString()
      {
          return "GTUDumper [interval=" + interval + ", network=" + network + ", fileNamePrefix=" + fileNamePrefix + "]";
      }
  
  }