package org.opentrafficsim.road.network.lane;
   
   import javax.naming.NamingException;
   
   import org.djunits.unit.DirectionUnit;
   import org.djunits.unit.LengthUnit;
   import org.djunits.unit.SpeedUnit;
   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.geometry.OtsLine2d;
  import org.opentrafficsim.core.definitions.DefaultsNl;
  import org.opentrafficsim.core.dsol.OtsSimulatorInterface;
  import org.opentrafficsim.core.gtu.GtuException;
  import org.opentrafficsim.core.gtu.GtuType;
  import org.opentrafficsim.core.network.NetworkException;
  import org.opentrafficsim.core.network.Node;
  import org.opentrafficsim.road.car.CarTest;
  import org.opentrafficsim.road.definitions.DefaultsRoadNl;
  import org.opentrafficsim.road.gtu.LaneBasedGtu;
  import org.opentrafficsim.road.network.Lane;
  import org.opentrafficsim.road.network.LaneType;
  import org.opentrafficsim.road.network.RoadNetwork;
  import org.opentrafficsim.road.network.factory.LaneFactory;
  import org.opentrafficsim.road.network.speed.LaneSpeedLimits;
  
  import nl.tudelft.simulation.dsol.SimRuntimeException;
  import nl.tudelft.simulation.dsol.formalisms.eventscheduling.SimEventInterface;
  
  /**
   * Verify that GTUs register and unregister at the correct times and locations when following a curve.
   * <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 Alexander Verbraeck
   * @author Peter Knoppers
   * @author Guus Tamminga
   */
  public final class CurveTest
  {
  
      /** Verbose test. */
      private static final boolean VERBOSE = false;
  
      /** */
      private CurveTest()
      {
          // do not instantiate test class
      }
  
      /**
       * Let GTUs drive through a curve and check (de-)registration times at each node.
       * @throws NamingException on error
       * @throws SimRuntimeException on error
       * @throws NetworkException on error
       * @throws GtuException on error
       */
      @Test
      public void curveTest() throws SimRuntimeException, NamingException, NetworkException, GtuException
      {
          final int laneCount = 1;
          OtsSimulatorInterface simulator = CarTest.makeSimulator();
          RoadNetwork network = new RoadNetwork("curve test network", simulator);
          GtuType gtuType = DefaultsNl.CAR;
          LaneType laneType = DefaultsRoadNl.TWO_WAY_LANE;
          LaneSpeedLimits speedLimits = new LaneSpeedLimits(new Speed(50, SpeedUnit.KM_PER_HOUR));
          Node origin = new Node(network, "origin", new Point2d(10, 10), Direction.ZERO);
          Node curveStart = new Node(network, "curveStart", new Point2d(100, 10), Direction.ZERO);
          Node curveEnd = new Node(network, "curveEnd", new Point2d(150, 60), new Direction(90, DirectionUnit.EAST_DEGREE));
          Node destination =
                  new Node(network, "destination", new Point2d(150, 150), new Direction(90, DirectionUnit.EAST_DEGREE));
          Lane[] straight1 = LaneFactory.makeMultiLane(network, "straight1", origin, curveStart, null, laneCount, laneType,
                  speedLimits, simulator);
          Lane[] straight2 = LaneFactory.makeMultiLane(network, "straight2", curveEnd, destination, null, laneCount, laneType,
                  speedLimits, simulator);
          OtsLine2d curveLine = LaneFactory.makeBezier(origin, curveStart, curveEnd, destination);
          Lane[] curve = LaneFactory.makeMultiLane(network, "bezier", curveStart, curveEnd,
                  curveLine.getPointList().toArray(new Point2d[curveLine.size()]), laneCount, laneType, speedLimits, simulator);
          Lane[][] laneSets = new Lane[][] {straight1, curve, straight2};
          Length initialPosition = new Length(5, LengthUnit.METER);
          Speed speed = new Speed(10, SpeedUnit.SI);
          for (int lane = 0; lane < laneCount; lane++)
          {
              // System.out.println("Lane is " + lane);
              double cumulativeLength = 0;
              for (Lane[] set : laneSets)
              {
                  cumulativeLength += set[lane].getLength().si;
                  double timeAtEnd = simulator.getSimulatorTime().si + (cumulativeLength - initialPosition.si) / speed.si;
                  if (VERBOSE)
                  {
                      System.out.println("lane " + set[lane] + " length is " + set[lane].getLength()
                              + " time for reference to get to end " + timeAtEnd);
                  }
              }
             LaneBasedGtu car =
                     CarTest.makeReferenceCar("car", gtuType, straight1[lane], initialPosition, speed, (RoadNetwork) network);
             if (VERBOSE)
             {
                 printEventList(simulator);
                 System.out.println("STEP");
             }
             simulator.step();
             if (VERBOSE)
             {
                 printEventList(simulator);
                 System.out.println("STEP");
             }
             simulator.step();
             if (VERBOSE)
             {
                 printEventList(simulator);
             }
             // TODO finish writing this test
         }
     }
 
     /**
      * Print all scheduled events of an OtsSimulatorInterface.
      * @param simulator the OtsSimulatorInterface
      */
     public void printEventList(final OtsSimulatorInterface simulator)
     {
         for (SimEventInterface<Duration> se : simulator.getEventList())
         {
             System.out.println("se: " + se);
         }
     }
 
 }