/*
    * Copyright 2022-2026 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.serialization;
  
  import static java.util.Collections.unmodifiableMap;
  import static java.util.Objects.isNull;
  import static java.util.Objects.requireNonNull;
  
  import java.io.Serial;
  import java.io.Serializable;
  import java.util.Arrays;
  import java.util.LinkedHashMap;
  import java.util.Map;
  import java.util.Optional;
  import java.util.stream.Collectors;
  import org.bremersee.geojson.GeoJsonConstants;
  import org.bremersee.geojson.GeoJsonGeometryFactory;
  import org.locationtech.jts.geom.Geometry;
  
  /**
   * The type Abstract geometry to json converter.
   *
   * @param <S> the type parameter
   * @author Christian Bremer
   */
  abstract class AbstractGeometryToJsonConverter<S extends Geometry> implements Serializable {
  
    @Serial
    private static final long serialVersionUID = 1L;
  
    private final boolean withBoundingBox;
  
    /**
     * Instantiates a new Abstract geometry to json converter.
     *
     * @param withBoundingBox the with bounding box
     */
    AbstractGeometryToJsonConverter(boolean withBoundingBox) {
      this.withBoundingBox = withBoundingBox;
    }
  
    /**
     * Convert map.
     *
     * @param source the source
     * @return the map
     */
    Map<String, Object> convert(S source) {
      if (isNull(source)) {
        return null;
      }
      Map<String, Object> map = new LinkedHashMap<>();
      map.put(GeoJsonConstants.TYPE, requireNonNull(getGeometryType()));
      if (withBoundingBox) {
        Optional.ofNullable(GeoJsonGeometryFactory.getBoundingBox(source))
            .map(bbox -> Arrays.stream(bbox).boxed().toList())
            .ifPresent(bbox -> map.put(GeoJsonConstants.BBOX, bbox));
      }
      map.put(GeoJsonConstants.COORDINATES, getGeometryJsonValue(source));
      return unmodifiableMap(map);
    }
  
    /**
     * Gets geometry type.
     *
     * @return the geometry type
     */
    abstract String getGeometryType();
  
    /**
     * Gets geometry json value.
     *
     * @param source the source
     * @return the geometry json value
     */
    abstract Object getGeometryJsonValue(S source);
  }