/*
    * 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 static java.util.Objects.isNull;
  import static org.bremersee.geojson.GeoJsonConstants.COORDINATES;
  import static org.bremersee.geojson.GeoJsonConstants.MULTI_LINESTRING;
  import static org.bremersee.geojson.GeoJsonConstants.TYPE;
  
  import java.io.Serial;
  import java.util.List;
  import java.util.Map;
  import org.locationtech.jts.geom.GeometryFactory;
  import org.locationtech.jts.geom.LineString;
  import org.locationtech.jts.geom.MultiLineString;
  
  /**
   * The json to multi line string converter.
   *
   * @author Christian Bremer
   */
  public class JsonToMultiLineStringConverter extends AbstractJsonToGeometryConverter {
  
    @Serial
    private static final long serialVersionUID = 1L;
  
    /**
     * The line string converter.
     */
    private final JsonToLineStringConverter lineStringConverter;
  
    /**
     * Instantiates a new json to multi line string converter.
     *
     * @param geometryFactory the geometry factory
     * @param lineStringConverter the line string converter
     */
    JsonToMultiLineStringConverter(
        GeometryFactory geometryFactory,
        JsonToLineStringConverter lineStringConverter) {
  
      super(geometryFactory);
      if (isNull(lineStringConverter)) {
        throw new IllegalArgumentException("LineString converter must be present.");
      }
      this.lineStringConverter = lineStringConverter;
    }
  
    /**
     * Convert multi line string.
     *
     * @param source the source
     * @return the multi line string
     */
    MultiLineString convert(Map<String, Object> source) {
      if (isNull(source)) {
        return null;
      }
      if (!MULTI_LINESTRING.equals(source.get(TYPE))) {
        throw new IllegalArgumentException(String
            .format("Source is not a %s: %s", MULTI_LINESTRING, source));
      }
      return convertCoordinates(source.get(COORDINATES));
    }
  
    /**
     * Convert coordinates multi line string.
     *
     * @param source the source
     * @return the multi line string
     */
    MultiLineString convertCoordinates(Object source) {
      //noinspection unchecked
      List<Object> coordinates = isNull(source) ? List.of() : (List<Object>) source;
      LineString[] lineStrings = coordinates.stream()
          .map(lineStringConverter::convertCoordinates)
          .toArray(LineString[]::new);
      return getGeometryFactory().createMultiLineString(lineStrings);
    }
  
  }