/* Copyright 2022-2026 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.estimation.measurements.modifiers;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.orekit.TestUtils;
  import org.orekit.Utils;
  import org.orekit.bodies.GeodeticPoint;
  import org.orekit.bodies.OneAxisEllipsoid;
  import org.orekit.estimation.measurements.AngularAzEl;
  import org.orekit.estimation.measurements.EstimatedMeasurementBase;
  import org.orekit.estimation.measurements.GroundStation;
  import org.orekit.estimation.measurements.ObservableSatellite;
  import org.orekit.frames.FramesFactory;
  import org.orekit.frames.TopocentricFrame;
  import org.orekit.models.earth.ionosphere.IonosphericModel;
  import org.orekit.propagation.SpacecraftState;
  import org.orekit.time.AbsoluteDate;
  import org.orekit.utils.Constants;
  import org.orekit.utils.ParameterDriver;
  import org.orekit.utils.TimeStampedPVCoordinates;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  class AngularIonosphericDelayModifierTest {
  
      @BeforeEach
      void setUp() {
          Utils.setDataRoot("regular-data");
      }
  
      @Test
      void testGetParameters() {
          // GIVEN
          final IonosphericModel model = mock();
          final List<ParameterDriver> expectedDrivers = new ArrayList<>();
          expectedDrivers.add(mock(ParameterDriver.class));
          when(model.getParametersDrivers()).thenReturn(expectedDrivers);
          final AngularIonosphericDelayModifier modifier = new AngularIonosphericDelayModifier(model, 1.);
          // WHEN
          final List<ParameterDriver> drivers = modifier.getParametersDrivers();
          // THEN
          assertEquals(expectedDrivers, drivers);
      }
  
      @Test
      void testNoDelayModifyWithoutDerivatives() {
          // GIVEN
          final SpacecraftState state = new SpacecraftState(TestUtils.getDefaultOrbit(AbsoluteDate.ARBITRARY_EPOCH));
          final OneAxisEllipsoid ellipsoid = new OneAxisEllipsoid(Constants.WGS84_EARTH_EQUATORIAL_RADIUS, 0.,
                  FramesFactory.getGTOD(true));
          final GeodeticPoint point = new GeodeticPoint(0., 0., 100.);
          final GroundStation station = mock();
          when(station.getBaseFrame()).thenReturn(new TopocentricFrame(ellipsoid, point, ""));
          when(station.getOffsetGeodeticPoint(any(AbsoluteDate.class))).thenReturn(point);
          final AngularAzEl angularAzEl = new AngularAzEl(station, AbsoluteDate.ARBITRARY_EPOCH, new double[2], new double[2], new double[2], new ObservableSatellite(0));
          final EstimatedMeasurementBase<AngularAzEl> estimated = new EstimatedMeasurementBase<>(angularAzEl, 0, 0,
                  new SpacecraftState[] {state}, new TimeStampedPVCoordinates[]{state.getPVCoordinates()});
          final double azimuth = 2.;
          final double elevation = 1.;
          estimated.setEstimatedValue(azimuth, elevation);
          final IonosphericModel model = mock();
          when(model.pathDelay(any(SpacecraftState.class), any(TopocentricFrame.class), any(Double.class), any())).thenReturn(0.);
          final AngularIonosphericDelayModifier modifier = new AngularIonosphericDelayModifier(model, 1.);
          // WHEN
          modifier.modifyWithoutDerivatives(estimated);
          // THEN
          assertEquals(azimuth, estimated.getEstimatedValue()[0]);
          assertEquals(elevation, estimated.getEstimatedValue()[1]);
      }
  }