/* Copyright 2002-2025 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.files.ccsds.ndm.adm.apm;
  
  import java.io.IOException;
  
  import org.orekit.files.ccsds.definitions.Units;
  import org.orekit.files.ccsds.section.AbstractWriter;
  import org.orekit.files.ccsds.utils.generation.Generator;
  
  /** Writer for inertia data.
   * @author Luc Maisonobe
   * @since 11.0
   */
  class InertiaWriter extends AbstractWriter {
  
      /** Format version.
       * @since 12.0
       */
      private final double formatVersion;
  
      /** Inertia block. */
      private final Inertia inertia;
  
      /** Create a writer.
       * @param formatVersion format version
       * @param xmlTag name of the XML tag surrounding the section
       * @param kvnTag name of the KVN tag surrounding the section (may be null)
       * @param spacecraftParameters spacecraft parameters data to write
       */
      InertiaWriter(final double formatVersion, final String xmlTag, final String kvnTag,
                    final Inertia spacecraftParameters) {
          super(xmlTag, kvnTag);
          this.formatVersion = formatVersion;
          this.inertia = spacecraftParameters;
      }
  
      /** {@inheritDoc} */
      @Override
      protected void writeContent(final Generator generator) throws IOException {
  
          generator.writeComments(inertia.getComments());
  
          // frame
          if (inertia.getFrame() != null) {
              generator.writeEntry(InertiaKey.INERTIA_REF_FRAME.name(),
                                   inertia.getFrame().getName(),
                                   null, false);
          }
  
          // inertia matrix
          if (formatVersion < 2.0) {
              generator.writeEntry(InertiaKey.I11.name(), inertia.getInertiaMatrix().getEntry(0, 0), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.I22.name(), inertia.getInertiaMatrix().getEntry(1, 1), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.I33.name(), inertia.getInertiaMatrix().getEntry(2, 2), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.I12.name(), inertia.getInertiaMatrix().getEntry(0, 1), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.I13.name(), inertia.getInertiaMatrix().getEntry(0, 2), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.I23.name(), inertia.getInertiaMatrix().getEntry(1, 2), Units.KG_M2, true);
          } else {
              generator.writeEntry(InertiaKey.IXX.name(), inertia.getInertiaMatrix().getEntry(0, 0), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.IYY.name(), inertia.getInertiaMatrix().getEntry(1, 1), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.IZZ.name(), inertia.getInertiaMatrix().getEntry(2, 2), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.IXY.name(), inertia.getInertiaMatrix().getEntry(0, 1), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.IXZ.name(), inertia.getInertiaMatrix().getEntry(0, 2), Units.KG_M2, true);
              generator.writeEntry(InertiaKey.IYZ.name(), inertia.getInertiaMatrix().getEntry(1, 2), Units.KG_M2, true);
          }
  
      }
  
  }