package org.opentrafficsim.road.network.lane;
   
   import java.util.Map;
   
   import org.djunits.unit.DurationUnit;
   import org.djunits.unit.SpeedUnit;
   import org.djunits.unit.util.UNITS;
   import org.djunits.value.vdouble.scalar.Acceleration;
   import org.djunits.value.vdouble.scalar.Direction;
  import org.djunits.value.vdouble.scalar.Duration;
  import org.djunits.value.vdouble.scalar.Length;
  import org.djunits.value.vdouble.scalar.Speed;
  import org.djutils.draw.point.Point2d;
  import org.junit.jupiter.api.Test;
  import org.opentrafficsim.base.parameters.Parameters;
  import org.opentrafficsim.core.definitions.DefaultsNl;
  import org.opentrafficsim.core.dsol.AbstractOtsModel;
  import org.opentrafficsim.core.dsol.OtsModelInterface;
  import org.opentrafficsim.core.dsol.OtsSimulator;
  import org.opentrafficsim.core.dsol.OtsSimulatorInterface;
  import org.opentrafficsim.core.gtu.GtuType;
  import org.opentrafficsim.core.gtu.RelativePosition;
  import org.opentrafficsim.core.network.NetworkException;
  import org.opentrafficsim.core.network.Node;
  import org.opentrafficsim.core.perception.HistoryManagerDevs;
  import org.opentrafficsim.road.DefaultTestParameters;
  import org.opentrafficsim.road.FixedCarFollowing;
  import org.opentrafficsim.road.definitions.DefaultsRoadNl;
  import org.opentrafficsim.road.gtu.LaneBasedGtu;
  import org.opentrafficsim.road.gtu.strategical.LaneBasedStrategicalPlanner;
  import org.opentrafficsim.road.gtu.strategical.LaneBasedStrategicalRoutePlanner;
  import org.opentrafficsim.road.gtu.tactical.lmrs.Lmrs;
  import org.opentrafficsim.road.gtu.tactical.lmrs.LmrsFactory;
  import org.opentrafficsim.road.gtu.tactical.lmrs.LmrsFactory.Setting;
  import org.opentrafficsim.road.network.Lane;
  import org.opentrafficsim.road.network.LanePosition;
  import org.opentrafficsim.road.network.LaneType;
  import org.opentrafficsim.road.network.RoadNetwork;
  import org.opentrafficsim.road.network.factory.LaneFactory;
  import org.opentrafficsim.road.network.object.detector.LaneDetector;
  import org.opentrafficsim.road.network.speed.LaneSpeedLimits;
  
  import nl.tudelft.simulation.dsol.SimRuntimeException;
  import nl.tudelft.simulation.dsol.eventlists.EventListInterface;
  import nl.tudelft.simulation.dsol.formalisms.eventscheduling.SimEventInterface;
  
  /**
   * Test detectors and scheduling of trigger.
   * <p>
   * Copyright (c) 2013-2026 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * </p>
   * @author Peter Knoppers
   */
  public final class DetectorTest implements UNITS
  {
  
      /** Verbose test. */
      private static final boolean VERBOSE = false;
  
      /** */
      private DetectorTest()
      {
          // do not instantiate test class
      }
  
      /**
       * Test the constructors of SensorLaneEnd and SensorLaneStart.
       * @throws Exception when something goes wrong (should not happen)
       */
      @Test
      public void sensorTest() throws Exception
      {
          // We need a simulator, but for that we first need something that implements OtsModelInterface
          OtsSimulatorInterface simulator = new OtsSimulator("SensorTest");
          OtsModelInterface model = new DummyModelForSensorTest(simulator);
          simulator.initialize(Duration.ZERO, Duration.ZERO, new Duration(3600.0, DurationUnit.SECOND), model,
                  HistoryManagerDevs.noHistory(simulator));
          RoadNetwork network = new RoadNetwork("sensor test network", simulator);
          // Now we need a set of Lanes
          // To create Lanes we need Nodes and a LaneType
          Node nodeAFrom = new Node(network, "AFrom", new Point2d(0, 0), Direction.ZERO);
          Node nodeATo = new Node(network, "ATo", new Point2d(1000, 0), Direction.ZERO);
          Node nodeBTo = new Node(network, "BTo", new Point2d(20000, 0), Direction.ZERO);
          // so car won't run off lane B in 100 s.
          GtuType gtuType = DefaultsNl.CAR;
          LaneType laneType = DefaultsRoadNl.TWO_WAY_LANE;
          LaneSpeedLimits speedLimits = new LaneSpeedLimits(new Speed(120, SpeedUnit.KM_PER_HOUR),
                  Map.of(DefaultsNl.TRUCK, new Speed(80, SpeedUnit.KM_PER_HOUR)));
          Lane[] lanesA = LaneFactory.makeMultiLane(network, "A", nodeAFrom, nodeATo, null, 3, laneType, speedLimits, simulator);
          Lane[] lanesB = LaneFactory.makeMultiLane(network, "B", nodeATo, nodeBTo, null, 3, laneType, speedLimits, simulator);
  
          // put a sensor on each of the lanes at the end of LaneA
          for (Lane lane : lanesA)
          {
              Length longitudinalPosition = new Length(999.9999, METER);
              TriggerDetector sensor =
                      new TriggerDetector(lane, longitudinalPosition, RelativePosition.REFERENCE, "Trigger@" + lane.toString());
          }
 
         Length positionA = new Length(100, METER);
         LanePosition initialLongitudinalPositions = new LanePosition(lanesA[1], positionA);
 
         // A Car needs an initial speed
         Speed initialSpeed = new Speed(50, KM_PER_HOUR);
         // Length of the Car
         Length carLength = new Length(4, METER);
         // Width of the Car
         Length carWidth = new Length(1.8, METER);
         // Maximum speed of the Car
         Speed maximumSpeed = new Speed(100, KM_PER_HOUR);
         // ID of the Car
         String carID = "theCar";
         // Create an acceleration profile for the car
         // Now we can make a car (GTU) (and we don't even have to hold a pointer to it)
         Parameters parameters = DefaultTestParameters.create();
 
         // LaneBasedBehavioralCharacteristics drivingCharacteristics =
         // new LaneBasedBehavioralCharacteristics(fas, null);
         LaneBasedGtu car = new LaneBasedGtu(carID, gtuType, carLength, carWidth, maximumSpeed, carLength.times(0.5),
                 (RoadNetwork) network);
         LaneBasedStrategicalPlanner strategicalPlanner = new LaneBasedStrategicalRoutePlanner(new LmrsFactory<>(Lmrs::new)
                 .set(Setting.CAR_FOLLOWING_MODEL, (h, v) -> new FixedCarFollowing(Acceleration.ofSI(0.5)).get()).create(car),
                 car);
         car.setParameters(parameters);
         car.init(strategicalPlanner, initialLongitudinalPositions.getLocation(), initialSpeed);
         simulator.runUpTo(Duration.ONE);
         if (!simulator.isStartingOrRunning())
         {
             simulator.start();
         }
         while (simulator.isStartingOrRunning())
         {
             try
             {
                 Thread.sleep(1);
             }
             catch (InterruptedException ie)
             {
                 ie = null; // ignore
             }
         }
         // Construction of the car scheduled a car move event at t=0
         EventListInterface<Duration> eventList = simulator.getEventList();
         SimEventInterface<Duration> triggerEvent = null;
         for (SimEventInterface<Duration> event : eventList)
         {
             if (VERBOSE)
             {
                 System.out.println("Scheduled Event " + event);
             }
             if (event.toString().contains("trigger"))
             {
                 triggerEvent = event;
             }
         }
         // XXX this is not true anymore with OperationalPlans, Perception, etc =>
         // XXX the number of events that should be scheduled can vary per models chosen
         // XXX assertEquals("There should be three scheduled events (trigger, leaveLane,
         // XXX car.move, terminate)", 4, eventList.size());
         // The sensor should be triggered around t=38.3403 (exact value: 10 / 9 * (sqrt(3541) - 25))
         // System.out.println("trigger event is " + triggerEvent);
         // / TODO not triggered in next half second.
         // XXX assertEquals("Trigger event should be around 38.3403", 38.3403,
         // XXX triggerEvent.getAbsoluteExecutionTime().get().getSI(), 0.0001);
     }
 }
 
 /** Test detector. */
 class TriggerDetector extends LaneDetector
 {
     /**
      * Constructor.
      * @param lane lane of the sensor
      * @param longitudinalPosition position of the sensor on the lane
      * @param positionType trigger position of the GTU
      * @param name name of the sensor
      * @throws NetworkException in case position is out of bounds
      */
     TriggerDetector(final Lane lane, final Length longitudinalPosition, final RelativePosition.Type positionType,
             final String name) throws NetworkException
     {
         super(name, lane, longitudinalPosition, positionType, DefaultsNl.ROAD_USERS);
     }
 
     @Override
     public void triggerResponse(final LaneBasedGtu gtu)
     {
         // TODO check that the sensor is triggered at the right time.
     }
 
 }
 
 /**
  * Dummy OtsModelInterface.
  * <p>
  * Copyright (c) 2013-2026 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
  * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
  * </p>
  * @author Peter Knoppers
  */
 class DummyModelForSensorTest extends AbstractOtsModel
 {
     /**
      * Constructor.
      * @param simulator the simulator to use
      */
     DummyModelForSensorTest(final OtsSimulatorInterface simulator)
     {
         super(simulator);
     }
 
     @Override
     public final void constructModel() throws SimRuntimeException
     {
         //
     }
 
     @Override
     public final RoadNetwork getNetwork()
     {
         return null;
     }
 }