/* Copyright 2002-2022 CS GROUP
    * 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;
  
  import org.orekit.forces.ForceModel;
  import org.orekit.forces.drag.DragForce;
  import org.orekit.forces.gravity.HolmesFeatherstoneAttractionModel;
  import org.orekit.forces.gravity.OceanTides;
  import org.orekit.forces.gravity.Relativity;
  import org.orekit.forces.gravity.SolidTides;
  import org.orekit.forces.gravity.ThirdBodyAttraction;
  import org.orekit.forces.radiation.SolarRadiationPressure;
  import org.orekit.models.earth.atmosphere.HarrisPriester;
  
  public enum Force {
  
      POTENTIAL() {
          public ForceModel getForceModel(Context context) {
              return new HolmesFeatherstoneAttractionModel(context.earth.getBodyFrame(), context.gravity);
          }
      },
  
      THIRD_BODY_SUN() {
          public ForceModel getForceModel(Context context) {
              return new ThirdBodyAttraction(context.sun);
          }
      },
  
      THIRD_BODY_MOON() {
          public ForceModel getForceModel(Context context) {
              return new ThirdBodyAttraction(context.moon);
          }
      },
  
      DRAG() {
          public ForceModel getForceModel(Context context) {
              return new DragForce(new HarrisPriester(context.sun, context.earth), context.dragSensitive);
          }
      },
  
      SOLAR_RADIATION_PRESSURE() {
          public ForceModel getForceModel(Context context) {
              return new SolarRadiationPressure(context.sun, context.earth.getEquatorialRadius(),
                                                context.radiationSensitive);
          }
      },
  
      OCEAN_TIDES() {
          public ForceModel getForceModel(Context context) {
              return new OceanTides(context.earth.getBodyFrame(), context.gravity.getAe(), context.gravity.getMu(),
                                    7, 7, context.conventions, context.ut1);
          }
      },
  
      SOLID_TIDES() {
          public ForceModel getForceModel(Context context) {
              return new SolidTides(context.earth.getBodyFrame(), context.gravity.getAe(), context.gravity.getMu(),
                                    context.gravity.getTideSystem(),
                                    context.conventions, context.ut1, context.sun, context.moon);
          }
      },
  
      RELATIVITY() {
          public ForceModel getForceModel(Context context) {
              return new Relativity(context.gravity.getMu());
          }
      };
  
      public abstract ForceModel getForceModel(Context context);
  
  }