/*
    * Copyright 2022 the original author or authors.
    *
    * 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 org.bremersee.geojson.converter.deserialization;
  
  import java.io.Serial;
  import java.io.Serializable;
  import java.util.List;
  import java.util.Objects;
  import org.locationtech.jts.geom.Coordinate;
  
  /**
   * The object to coordinate converter.
   *
   * @author Christian Bremer
   */
  class ObjectToCoordinateConverter implements Serializable {
  
    @Serial
    private static final long serialVersionUID = 1L;
  
    private final ObjectToDoubleConverter doubleConverter = new ObjectToDoubleConverter();
  
    /**
     * Convert coordinate.
     *
     * @param source the source (must not be {@code null})
     * @return the coordinate
     */
    Coordinate convert(Object source) {
      if (Objects.isNull(source)) {
        throw new IllegalArgumentException("Coordinate must be present.");
      }
      //noinspection unchecked
      List<Object> list = (List<Object>) source;
      Coordinate coordinate;
      if (list.size() >= 3) {
        coordinate = new Coordinate(
            doubleConverter.convert(list.get(0)),
            doubleConverter.convert(list.get(1)),
            doubleConverter.convert(list.get(2)));
      } else if (list.size() == 2) {
        coordinate = new Coordinate(
            doubleConverter.convert(list.get(0)),
            doubleConverter.convert(list.get(1)));
      } else if (list.size() == 1) {
        coordinate = new Coordinate(
            doubleConverter.convert(list.get(0)),
            Double.NaN);
      } else {
        coordinate = null;
      }
      return coordinate;
    }
  
  }