package org.opentrafficsim.swing.script;
   
   import java.awt.Dimension;
   import java.rmi.RemoteException;
   import java.text.SimpleDateFormat;
   import java.util.Date;
   import java.util.LinkedHashMap;
   import java.util.List;
   import java.util.Map;
  
  import org.djunits.value.vdouble.scalar.Duration;
  import org.djunits.value.vdouble.scalar.Time;
  import org.djutils.cli.Checkable;
  import org.djutils.cli.CliException;
  import org.djutils.cli.CliUtil;
  import org.djutils.exceptions.Throw;
  import org.djutils.exceptions.Try;
  import org.djutils.reflection.ClassUtil;
  import org.opentrafficsim.core.animation.gtu.colorer.GTUColorer;
  import org.opentrafficsim.core.dsol.OTSAnimator;
  import org.opentrafficsim.core.dsol.OTSModelInterface;
  import org.opentrafficsim.core.dsol.OTSSimulator;
  import org.opentrafficsim.core.dsol.OTSSimulatorInterface;
  import org.opentrafficsim.core.network.OTSNetwork;
  import org.opentrafficsim.draw.core.OTSDrawingException;
  import org.opentrafficsim.draw.factory.DefaultAnimationFactory;
  import org.opentrafficsim.road.network.OTSRoadNetwork;
  import org.opentrafficsim.swing.gui.AnimationToggles;
  import org.opentrafficsim.swing.gui.OTSAnimationPanel;
  import org.opentrafficsim.swing.gui.OTSSimulationApplication;
  import org.opentrafficsim.swing.gui.OTSSwingApplication;
  
  import nl.tudelft.simulation.dsol.SimRuntimeException;
  import nl.tudelft.simulation.dsol.model.inputparameters.InputParameterMap;
  import nl.tudelft.simulation.dsol.model.outputstatistics.OutputStatistic;
  import nl.tudelft.simulation.dsol.simulators.SimulatorInterface;
  import nl.tudelft.simulation.event.EventInterface;
  import nl.tudelft.simulation.event.EventListenerInterface;
  import nl.tudelft.simulation.jstats.streams.MersenneTwister;
  import nl.tudelft.simulation.jstats.streams.StreamInterface;
  import picocli.CommandLine.Command;
  import picocli.CommandLine.Option;
  
  /**
   * Template for simulation script. This class allows the user to run a single visualized simulation, or to batch-run the same
   * model. Parameters can be given through the command-line using djutils-ext. Fields can be added to sub-classes using the
   * {@code @Options} and similar annotations. Default values of the properties in this abstract class can be overwritten by the
   * sub-class using {@code CliUtil.changeDefaultValue()}.
   * <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 9 apr. 2018 <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>
   */
  @Command(description = "Test program for CLI", name = "Program", mixinStandardHelpOptions = true, showDefaultValues = true)
  public abstract class AbstractSimulationScript implements EventListenerInterface, Checkable
  {
      /** Name. */
      private final String name;
  
      /** Description. */
      private final String description;
  
      /** The simulator. */
      private OTSSimulatorInterface simulator;
  
      /** The network. */
      private OTSRoadNetwork network;
  
      /** GTU colorer. */
      private GTUColorer gtuColorer = OTSSwingApplication.DEFAULT_COLORER;
  
      /** Seed. */
      @Option(names = "--seed", description = "Seed", defaultValue = "1")
      private long seed;
  
      /** Start time. */
      @Option(names = { "-s", "--startTime" }, description = "Start time", defaultValue = "0s")
      private Time startTime;
  
      /** Warm-up time. */
      @Option(names = { "-w", "--warmupTime" }, description = "Warm-up time", defaultValue = "0s")
      private Duration warmupTime;
  
      /** Simulation time. */
      @Option(names = { "-t", "--simulationTime" }, description = "Simulation time (including warm-up time)",
              defaultValue = "3600s")
      private Duration simulationTime;
  
      /** Autorun. */
      @Option(names = { "-a", "--autorun" }, description = "Autorun", negatable = true, defaultValue = "false")
      private boolean autorun;
  
      /**
       * Constructor.
       * @param name String; name
      * @param description String; description
      */
     protected AbstractSimulationScript(final String name, final String description)
     {
         this.name = name;
         this.description = description;
         try
         {
             CliUtil.changeCommandName(this, this.name);
             CliUtil.changeCommandDescription(this, this.description);
             SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
             CliUtil.changeCommandVersion(this,
                     formatter.format(new Date(ClassUtil.classFileDescriptor(this.getClass()).getLastChangedDate())));
         }
         catch (NoSuchFieldException | IllegalStateException | IllegalArgumentException | CliException exception)
         {
             throw new RuntimeException("Exception while setting properties in @Command annotation.", exception);
         }
     }
 
     /**
      * Returns the seed.
      * @return long; seed
      */
     public long getSeed()
     {
         return this.seed;
     }
 
     /**
      * Returns the start time.
      * @return Time; start time
      */
     public Time getStartTime()
     {
         return this.startTime;
     }
 
     /**
      * Returns the warm-up time.
      * @return Duration; warm-up time
      */
     public Duration getWarmupTime()
     {
         return this.warmupTime;
     }
 
     /**
      * Returns the simulation time.
      * @return Duration; simulation time
      */
     public Duration getSimulationTime()
     {
         return this.simulationTime;
     }
 
     /**
      * Returns whether to autorun.
      * @return boolean; whether to autorun
      */
     public boolean isAutorun()
     {
         return this.autorun;
     }
 
     /**
      * Set GTU colorer.
      * @param colorer GTUColorer; GTU colorer
      */
     public final void setGtuColorer(final GTUColorer colorer)
     {
         this.gtuColorer = colorer;
     }
 
     /**
      * Returns the GTU colorer.
      * @return returns the GTU colorer
      */
     public final GTUColorer getGtuColorer()
     {
         return this.gtuColorer;
     }
 
     /** {@inheritDoc} */
     @Override
     public void check() throws Exception
     {
         Throw.when(this.seed < 0, IllegalArgumentException.class, "Seed should be positive");
         Throw.when(this.warmupTime.si < 0.0, IllegalArgumentException.class, "Warm-up time should be positive");
         Throw.when(this.simulationTime.si < 0.0, IllegalArgumentException.class, "Simulation time should be positive");
         Throw.when(this.simulationTime.si < this.warmupTime.si, IllegalArgumentException.class,
                 "Simulation time should be longer than warmp-up time");
     }
 
     /**
      * Starts the simulation.
      * @throws Exception on any exception
      */
     public final void start() throws Exception
     {
         if (isAutorun())
         {
             this.simulator = new OTSSimulator();
             final ScriptModel scriptModel = new ScriptModel(this.simulator);
             this.simulator.initialize(this.startTime, this.warmupTime, this.simulationTime, scriptModel);
             this.simulator.addListener(this, SimulatorInterface.END_REPLICATION_EVENT);
             double tReport = 60.0;
             Time t = this.simulator.getSimulatorTime();
             while (t.si < this.simulationTime.si)
             {
                 this.simulator.step();
                 t = this.simulator.getSimulatorTime();
                 if (t.si >= tReport)
                 {
                     System.out.println("Simulation time is " + t);
                     tReport += 60.0;
                 }
             }
             // sim.stop(); // end of simulation event
             onSimulationEnd(); // TODO this is temporary for as long as stop() gives an exception
             System.exit(0);
         }
         else
         {
             this.simulator = new OTSAnimator();
             final ScriptModel scriptModel = new ScriptModel(this.simulator);
             this.simulator.initialize(this.startTime, this.warmupTime, this.simulationTime, scriptModel);
             OTSAnimationPanel animationPanel =
                     new OTSAnimationPanel(scriptModel.getNetwork().getExtent(), new Dimension(800, 600),
                             (OTSAnimator) this.simulator, scriptModel, getGtuColorer(), scriptModel.getNetwork());
             setAnimationToggles(animationPanel);
             animateNetwork(scriptModel.getNetwork());
             setupDemo(animationPanel, scriptModel.getNetwork());
             OTSSimulationApplication<ScriptModel> app = new OTSSimulationApplication<ScriptModel>(scriptModel, animationPanel)
             {
                 /** */
                 private static final long serialVersionUID = 20190130L;
 
                 /** {@inheritDoc} */
                 @Override
                 protected void animateNetwork() throws OTSDrawingException
                 {
                     // override with nothing to prevent double toggles
                 }
 
                 /** {@inheritDoc} */
                 @Override
                 protected void setAnimationToggles()
                 {
                     // override with nothing to prevent double toggles
                 }
             };
             addTabs(this.simulator, app);
             app.setExitOnClose(true);
         }
     }
 
     /** {@inheritDoc} */
     @Override
     public void notify(final EventInterface event) throws RemoteException
     {
         if (event.getType().equals(SimulatorInterface.END_REPLICATION_EVENT))
         {
             // try
             // {
             // getSimulator().scheduleEventNow(this, this, "onSimulationEnd", null);
             // }
             // catch (SimRuntimeException exception)
             // {
             // throw new RuntimeException(exception);
             // }
             onSimulationEnd();
             // solve bug that event is fired twice
             AbstractSimulationScript.this.simulator.removeListener(AbstractSimulationScript.this,
                     SimulatorInterface.END_REPLICATION_EVENT);
         }
     }
 
     /**
      * Returns the simulator.
      * @return OTSSimulatorInterface; simulator
      */
     public final OTSSimulatorInterface getSimulator()
     {
         return AbstractSimulationScript.this.simulator;
     }
 
     /**
      * Returns the network.
      * @return OTSNetwork; network
      */
     public final OTSRoadNetwork getNetwork()
     {
         return AbstractSimulationScript.this.network;
     }
 
     // Overridable methods
 
     /**
      * Creates animations for nodes, links and lanes. This can be used if the network is not read from XML.
      * @param net OTSNetwork; network
      */
     protected void animateNetwork(final OTSNetwork net)
     {
         try
         {
             DefaultAnimationFactory.animateNetwork(net, getSimulator(), getGtuColorer());
         }
         catch (OTSDrawingException exception)
         {
             throw new RuntimeException("Exception while creating network animation.", exception);
         }
     }
 
     /**
      * Adds tabs to the animation. May be overridden.
      * @param sim OTSSimulatorInterface; simulator
      * @param animation OTSSimulationApplication&lt;?&gt;; animation to add tabs to
      */
     protected void addTabs(final OTSSimulatorInterface sim, final OTSSimulationApplication<?> animation)
     {
         //
     }
 
     /**
      * Method that is called when the simulation has ended. This can be used to store data.
      */
     protected void onSimulationEnd()
     {
         //
     }
 
     /**
      * Method that is called when the animation has been created, to add components for a demo.
      * @param animationPanel OTSAnimationPanel; animation panel
      * @param net OTSNetwork; network
      */
     protected void setupDemo(final OTSAnimationPanel animationPanel, final OTSRoadNetwork net)
     {
         //
     }
 
     /**
      * Sets the animation toggles. May be overridden.
      * @param animation OTSAnimationPanel; animation to set the toggle on
      */
     protected void setAnimationToggles(final OTSAnimationPanel animation)
     {
         AnimationToggles.setIconAnimationTogglesStandard(animation);
     }
 
     // Abstract methods
 
     /**
      * Sets up the simulation based on provided properties. Properties can be obtained with {@code getProperty()}. Setting up a
      * simulation should at least create a network and some demand. Additionally this may setup traffic control, sampling, etc.
      * @param sim OTSSimulatorInterface; simulator
      * @return OTSNetwork; network
      * @throws Exception on any exception
      */
     protected abstract OTSRoadNetwork setupSimulation(OTSSimulatorInterface sim) throws Exception;
 
     // Nested classes
 
     /**
      * Model.
      * <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 9 apr. 2018 <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>
      */
     private class ScriptModel implements OTSModelInterface
     {
         /** */
         private static final long serialVersionUID = 20180409L;
 
         /**
          * @param simulator OTSSimulatorInterface; the simulator
          */
         @SuppressWarnings("synthetic-access")
         ScriptModel(final OTSSimulatorInterface simulator)
         {
             AbstractSimulationScript.this.simulator = simulator;
         }
 
         /** {@inheritDoc} */
         @SuppressWarnings("synthetic-access")
         @Override
         public void constructModel() throws SimRuntimeException
         {
             Map<String, StreamInterface> streams = new LinkedHashMap<>();
             StreamInterface stream = new MersenneTwister(getSeed());
             streams.put("generation", stream);
             stream = new MersenneTwister(getSeed() + 1);
             streams.put("default", stream);
             AbstractSimulationScript.this.simulator.getReplication().setStreams(streams);
             AbstractSimulationScript.this.network =
                     Try.assign(() -> AbstractSimulationScript.this.setupSimulation(AbstractSimulationScript.this.simulator),
                             RuntimeException.class, "Exception while setting up simulation.");
             try
             {
                 AbstractSimulationScript.this.simulator.addListener(AbstractSimulationScript.this,
                         SimulatorInterface.END_REPLICATION_EVENT);
             }
             catch (RemoteException exception)
             {
                 throw new SimRuntimeException(exception);
             }
         }
 
         /** {@inheritDoc} */
         @SuppressWarnings("synthetic-access")
         @Override
         public OTSSimulatorInterface getSimulator()
         {
             return AbstractSimulationScript.this.simulator;
         }
 
         /** {@inheritDoc} */
         @SuppressWarnings("synthetic-access")
         @Override
         public OTSRoadNetwork getNetwork()
         {
             return AbstractSimulationScript.this.network;
         }
 
         /** {@inheritDoc} */
         @Override
         public InputParameterMap getInputParameterMap()
         {
             return null;
         }
 
         /** {@inheritDoc} */
         @Override
         public List<OutputStatistic<?>> getOutputStatistics()
         {
             return null;
         }
 
         /** {@inheritDoc} */
         @SuppressWarnings("synthetic-access")
         @Override
         public String getShortName()
         {
             return AbstractSimulationScript.this.name;
         }
 
         /** {@inheritDoc} */
         @SuppressWarnings("synthetic-access")
         @Override
         public String getDescription()
         {
             return AbstractSimulationScript.this.description;
         }
     }
 
 }