/*
    * Copyright 2018-2022 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.model;
  
  import static java.util.Objects.isNull;
  
  import io.swagger.v3.oas.annotations.media.Schema;
  import java.io.Serial;
  import java.io.Serializable;
  import java.math.BigDecimal;
  import java.util.ArrayList;
  import lombok.EqualsAndHashCode;
  import lombok.ToString;
  
  /**
   * The first two elements are longitude and latitude.
   *
   * @author Christian Bremer
   */
  @Schema(description = "The first two elements are longitude and latitude.")
  @EqualsAndHashCode(callSuper = true)
  @ToString(callSuper = true)
  public class Position extends ArrayList<BigDecimal> implements Serializable {
  
    @Serial
    private static final long serialVersionUID = 1L;
  
    /**
     * Instantiates a new empty (illegal) position.
     */
    public Position() {
      super(3);
    }
  
    /**
     * Instantiates a new position.
     *
     * @param x the x (aka longitude)
     * @param y the y (aka latitude)
     */
    public Position(BigDecimal x, BigDecimal y) {
      this(x, y, null);
    }
  
    /**
     * Instantiates a new position.
     *
     * @param x the x (aka longitude)
     * @param y the y (aka latitude)
     * @param z the z (the z coordinate)
     */
    public Position(BigDecimal x, BigDecimal y, BigDecimal z) {
      super(isNull(z) ? 2 : 3);
      if (isNull(x)) {
        throw new IllegalArgumentException("X (longitude) must not be null.");
      }
      if (isNull(y)) {
        throw new IllegalArgumentException("Y (latitude) must not be null.");
      }
      add(x);
      add(y);
      if (!isNull(z)) {
        add(z);
      }
    }
  
  }