/* Copyright 2022-2025 Romain Serra
    * Licensed to CS GROUP (CS) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * CS licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.orekit.forces.empirical;
  
  import org.hipparchus.CalculusFieldElement;
  import org.hipparchus.geometry.euclidean.threed.FieldVector3D;
  import org.hipparchus.geometry.euclidean.threed.Vector3D;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  import org.orekit.attitudes.AttitudeProvider;
  import org.orekit.attitudes.FrameAlignedProvider;
  import org.orekit.frames.FramesFactory;
  import org.orekit.orbits.CartesianOrbit;
  import org.orekit.propagation.FieldSpacecraftState;
  import org.orekit.propagation.SpacecraftState;
  import org.orekit.propagation.events.DateDetector;
  import org.orekit.propagation.events.EventDetector;
  import org.orekit.time.AbsoluteDate;
  import org.orekit.utils.AbsolutePVCoordinates;
  import org.orekit.utils.PVCoordinates;
  import org.orekit.utils.ParameterDriver;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.stream.Stream;
  
  class AbstractParametricAccelerationTest {
  
      @Test
      void testGetAccelerationDirectionAbsolutePVCoordinates() {
          // GIVEN
          final AbsolutePVCoordinates orbit = new AbsolutePVCoordinates(
                  FramesFactory.getEME2000(), AbsoluteDate.ARBITRARY_EPOCH, new PVCoordinates(Vector3D.MINUS_J, Vector3D.MINUS_K));
          final TestAcceleration testAcceleration = new TestAcceleration(Vector3D.PLUS_I, true,
                  new FrameAlignedProvider(orbit.getFrame()));
          // WHEN
          final Vector3D direction = testAcceleration.getAccelerationDirection(new SpacecraftState(orbit));
          // THEN
          Assertions.assertEquals(Vector3D.PLUS_I, direction);
      }
  
      @Test
      void testGetAccelerationDirection() {
          // GIVEN
          final CartesianOrbit orbit = new CartesianOrbit(new PVCoordinates(Vector3D.MINUS_J, Vector3D.MINUS_K),
                  FramesFactory.getEME2000(), AbsoluteDate.ARBITRARY_EPOCH, 1.);
          final TestAcceleration testAcceleration = new TestAcceleration(Vector3D.PLUS_I, true,
                  new FrameAlignedProvider(orbit.getFrame()));
          // WHEN
          final Vector3D direction = testAcceleration.getAccelerationDirection(new SpacecraftState(orbit));
          // THEN
          Assertions.assertEquals(Vector3D.PLUS_I, direction);
      }
  
      @Test
      void testGetAccelerationDirectionNoOverride() {
          // GIVEN
          final CartesianOrbit orbit = new CartesianOrbit(new PVCoordinates(Vector3D.MINUS_J, Vector3D.MINUS_K),
                  FramesFactory.getEME2000(), AbsoluteDate.ARBITRARY_EPOCH, 1.);
          final TestAcceleration testAcceleration = new TestAcceleration(Vector3D.PLUS_I, true, null);
          // WHEN
          final Vector3D direction = testAcceleration.getAccelerationDirection(new SpacecraftState(orbit));
          // THEN
          Assertions.assertEquals(Vector3D.PLUS_I, direction);
      }
  
      @Test
      void testGetEventDetectorsEmpty() {
          // GIVEN
          final TestAcceleration testAcceleration = new TestAcceleration(Vector3D.PLUS_I, true, null);
          // WHEN
          final Stream<EventDetector> detectorStream = testAcceleration.getEventDetectors();
          // THEN
          Assertions.assertEquals(0, detectorStream.count());
      }
  
      @Test
      void testGetEventDetectors() {
          // GIVEN
          final AttitudeProvider mockedAttitudeProvider = Mockito.mock(AttitudeProvider.class);
          Mockito.when(mockedAttitudeProvider.getEventDetectors()).thenReturn(Stream.of(new DateDetector()));
          final TestAcceleration testAcceleration = new TestAcceleration(Vector3D.PLUS_I, true, mockedAttitudeProvider);
          // WHEN
          final Stream<EventDetector> detectorStream = testAcceleration.getEventDetectors();
         // THEN
         Assertions.assertEquals(1, detectorStream.count());
     }
 
     private static class TestAcceleration extends AbstractParametricAcceleration {
 
         protected TestAcceleration(Vector3D direction, boolean isInertial, AttitudeProvider attitudeOverride) {
             super(direction, isInertial, attitudeOverride);
         }
 
         @Override
         public Vector3D acceleration(SpacecraftState s, double[] parameters) {
             return null;
         }
 
         @Override
         public <T extends CalculusFieldElement<T>> FieldVector3D<T> acceleration(FieldSpacecraftState<T> s, T[] parameters) {
             return null;
         }
 
         @Override
         public List<ParameterDriver> getParametersDrivers() {
             return Collections.emptyList();
         }
     }
 }