package com.stylefeng.guns.modular.system.util;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.stylefeng.guns.core.util.SpringContextHolder;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
public class GaoDeMapUtil {

    public static void main(String[] args) {
        // 地址名称
        String address = "深圳市";
        // 调用自己写好的封装方法
        JSONObject positionObj = getLngAndLat(address);
        String longitude = positionObj.getString("longitude");
        String latitude = positionObj.getString("latitude");
        System.out.println("经度：" + longitude);
        System.out.println("纬度：" + latitude);

    }

    /**
     * 获取GDKeyManager（非Spring环境下返回null，如main测试）
     */
    private static GDKeyManager getKeyManager() {
        try {
            return SpringContextHolder.getBean(GDKeyManager.class);
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 根据地址查询经纬度
     * key次数用完时自动切换可用key重试
     *
     * @param address
     * @return
     */
    public static JSONObject getLngAndLat(String address) {
        JSONObject positionObj = new JSONObject();
        GDKeyManager keyManager = getKeyManager();

        int maxAttempts = 5;
        for (int i = 0; i < maxAttempts; i++) {
            String key = keyManager != null ? keyManager.getKey() : GDKeyManager.FALLBACK_KEY;
            try {
                // 拼接请求高德的url
                String url = "http://restapi.amap.com/v3/geocode/geo?address=" + address + "&output=JSON&key=" + key;
                // 请求高德接口
                String result = sendHttpGet(url);
                JSONObject resultJOSN = JSON.parseObject(result);
                System.out.println("高德接口返回原始数据：");
                System.out.println(resultJOSN);
                if (GDKeyManager.isWebKeyExhausted(resultJOSN)) {
                    if (keyManager != null) {
                        keyManager.reportExhausted(key);
                    }
                    continue;
                }
                JSONArray geocodesArray = resultJOSN.getJSONArray("geocodes");
                if (geocodesArray != null && geocodesArray.size() > 0) {
                    String position = geocodesArray.getJSONObject(0).getString("location");
                    String[] lngAndLat = position.split(",");
                    String longitude = lngAndLat[0];
                    String latitude = lngAndLat[1];
                    positionObj.put("longitude", longitude);
                    positionObj.put("latitude", latitude);
                }
                break;
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return positionObj;
    }

    /**
     * 发送Get请求
     *
     * @param url
     * @return
     */
    public static String sendHttpGet(String url) {
        HttpGet httpGet = new HttpGet(url);
        RequestConfig defaultRequestConfig = RequestConfig.custom()
                .setConnectTimeout(3000)
                .setSocketTimeout(10000)
                .build();
        CloseableHttpClient httpClient = HttpClients.custom().setDefaultRequestConfig(defaultRequestConfig).build();
        String result = "";
        try {
            CloseableHttpResponse closeableHttpResponse = httpClient.execute(httpGet);
            HttpEntity entity = closeableHttpResponse.getEntity();
            result = EntityUtils.toString(entity, "UTF-8");
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

}