package com.doumee.core.utils;


import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.TypeReference;
import com.doumee.dao.business.web.request.LocaltionDTO;

import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.util.ArrayList;
import java.util.List;

/**
 * 计算距离
 */
public class PositionUtil {

    public static String getTxMapAddrByLatAndLng(Double lat,Double lng,String host,String mapkey){
        try {
            if(lat == null || lng ==null){
                return null;
            }
            String url =host +"/ws/geocoder/v1/?key="+mapkey+"&location="+lat+","+lng;
            String res = HttpsUtil.get(url,false);
            JSONObject jsonObject = JSONObject.parseObject(res );
           String r = null;
           if(jsonObject.getJSONObject("result")!=null){
               if(jsonObject.getJSONObject("result").getJSONObject("formatted_addresses")!=null){
                   r =jsonObject.getJSONObject("result").getJSONObject("formatted_addresses").getString("formatted_addresses");
               }
               if(r!=null && !r.equals("")){
                   r =jsonObject.getJSONObject("result").getString("address");
               }
           }
           return r;

        }catch (Exception e){
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) {
        String str ="[{\"lat\": 31.71383446224521, \"lng\": 117.39342857107226, \"height\": 0}, {\"lat\": 31.71393087373135, \"lng\": 117.39402357524818, \"height\": 0}, {\"lat\": 31.713593433089077, \"lng\": 117.39433170240886, \"height\": 0}, {\"lat\": 31.713280450806966, \"lng\": 117.39358710879355, \"height\": 0}]";
        TypeReference typeReference =  new TypeReference<List<LocaltionDTO>>(){};
        List<LocaltionDTO> array = JSONObject.parseObject(str, typeReference.getType());
        if(array == null || array.size() ==0){
           System.out.println("=================");
        }
        System.out.println(isInPolygon(117.39, 31.71551600,array));
    }
   /* "latitude": 31.71551600,
            "longitude": 117.39,
   */ /**
     * 判断坐标点是否在多边形区域内
     *
     * @param pointLon 要判断的点的经度
     * @param pointLat 要判断的点的纬度
     * @return true：范围内; false：范围外
     */
    public static boolean isInPolygon(double pointLon, double pointLat, List<LocaltionDTO> list) {
        if(list==null ||list.size()==0){
            return false;
        }
        double[] lon = new double[list.size()];
        double[] lat = new double[list.size()];
        for (int i = 0; i < list.size(); i++) {
            lon[i] = list.get(i).getLng() ==null?0:list.get(i).getLng();
            lat[i] = list.get(i).getLat() ==null?0:list.get(i).getLat();
        }
        // 将要判断的横纵坐标组成一个点
        Point2D.Double point = new Point2D.Double(pointLon, pointLat);
        // 将区域各顶点的横纵坐标放到一个点集合里面
        List<Point2D.Double> pointList = new ArrayList<>();
        double polygonPointToX;
        double polygonPointToY;
        for (int i = 0; i < lon.length; i++) {
            polygonPointToX = lon[i];
            polygonPointToY = lat[i];
            Point2D.Double polygonPoint = new Point2D.Double(polygonPointToX, polygonPointToY);
            pointList.add(polygonPoint);
        }
        return check(point, pointList);
    }

    /**
     * 坐标点是否在多边形内
     *
     * @param point   要判断的点的横纵坐标
     * @param polygon 组成的顶点坐标集合
     */
    private static boolean check(Point2D.Double point, List<Point2D.Double> polygon) {
        GeneralPath generalPath = new GeneralPath();

        Point2D.Double first = polygon.get(0);
        // 通过移动到指定坐标（以双精度指定），将一个点添加到路径中
        generalPath.moveTo(first.x, first.y);
        polygon.remove(0);
        for (Point2D.Double d : polygon) {
            // 通过绘制一条从当前坐标到新指定坐标（以双精度指定）的直线，将一个点添加到路径中。
            generalPath.lineTo(d.x, d.y);
        }
        // 将几何多边形封闭
        generalPath.lineTo(first.x, first.y);
        generalPath.closePath();
        // 测试指定的 Point2D 是否在 Shape 的边界内。
        return generalPath.contains(point);
    }

}