content: /*
   * Copyright 2020 Google Inc.
   *
   * Licensed 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 com.android_academy.covid_19.util.kml;
  
  import com.google.android.gms.maps.model.LatLng;
  import com.google.maps.android.data.DataPolygon;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Represents a KML Polygon. Contains a single array of outer boundary coordinates and an array of
   * arrays for the inner boundary coordinates.
   */
  public class KmlPolygon implements DataPolygon<ArrayList<ArrayList<LatLng>>> {
  
    public static final String GEOMETRY_TYPE = "Polygon";
  
    private final List<LatLng> mOuterBoundaryCoordinates;
  
    private final List<List<LatLng>> mInnerBoundaryCoordinates;
  
    /**
     * Creates a new KmlPolygon object
     *
     * @param outerBoundaryCoordinates single array of outer boundary coordinates
     * @param innerBoundaryCoordinates multiple arrays of inner boundary coordinates
     */
    public KmlPolygon(
        List<LatLng> outerBoundaryCoordinates, List<List<LatLng>> innerBoundaryCoordinates) {
      if (outerBoundaryCoordinates == null) {
        throw new IllegalArgumentException("Outer boundary coordinates cannot be null");
      } else {
        mOuterBoundaryCoordinates = outerBoundaryCoordinates;
        mInnerBoundaryCoordinates = innerBoundaryCoordinates;
      }
    }
  
    /**
     * Gets the type of geometry
     *
     * @return type of geometry
     */
    public String getGeometryType() {
      return GEOMETRY_TYPE;
    }
  
    /**
     * Gets the coordinates of the Polygon
     *
     * @return ArrayList of an ArrayList of LatLng points
     */
    public List<List<LatLng>> getGeometryObject() {
      List<List<LatLng>> coordinates = new ArrayList<>();
      coordinates.add(mOuterBoundaryCoordinates);
      // Polygon objects do not have to have inner holes
      if (mInnerBoundaryCoordinates != null) {
        coordinates.addAll(mInnerBoundaryCoordinates);
      }
      return coordinates;
    }
  
    /**
     * Gets an array of outer boundary coordinates
     *
     * @return array of outer boundary coordinates
     */
    public List<LatLng> getOuterBoundaryCoordinates() {
      return mOuterBoundaryCoordinates;
    }
  
    /**
     * Gets an array of arrays of inner boundary coordinates
     *
     * @return array of arrays of inner boundary coordinates
     */
    public List<List<LatLng>> getInnerBoundaryCoordinates() {
      return mInnerBoundaryCoordinates;
    }
  
    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder(GEOMETRY_TYPE).append("{");
      sb.append("\n outer coordinates=").append(mOuterBoundaryCoordinates);
      sb.append(",\n inner coordinates=").append(mInnerBoundaryCoordinates);
      sb.append("\n}\n");
      return sb.toString();
    }
  }
  