package com.gear.oa.utils;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONArray;
import com.alibaba.fastjson2.JSONObject;
import com.gear.oa.domain.vo.OaExpressVo;
import org.apache.commons.lang3.StringUtils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.Arrays;

public class BestRouteQueryUtil {
    // 百世开放平台 partnerID
    private static final String PARTNER_ID = "7285";
    // 百世开放平台接口地址（请替换为实际地址）
    private static final String API_URL = "http://openapi.800best.com/api-server/ky/api/process";
    // 百世开放平台 partnerKey
    private static final String PARTNER_KEY = "NMGA0BQI";
    // 固定参数
    private static final String SERVICE_TYPE = "KY_TRACE_QUERY";

    /**
     * 查询百世快递路由
     * @param mailNo 运单号
     * @return 查询结果OaExpressVo
     */
    public static OaExpressVo queryRoute(String mailNo) {
        try {
            // 1. 构造业务数据bizData
            JSONObject bizData = new JSONObject();
            bizData.put("logisticCompanyID", "BESTQJT");
            bizData.put("codes", Arrays.asList(mailNo));
            String bizDataStr = bizData.toJSONString();

            // 2. 生成签名（签名前不做URLEncode）
            String sign = genSign(bizDataStr, PARTNER_KEY);

            // 3. 拼接表单参数（此处做URLEncode）
            StringBuilder formParams = new StringBuilder();
            formParams.append("partnerID=").append(URLEncoder.encode(PARTNER_ID, "UTF-8"));
            formParams.append("&serviceType=").append(URLEncoder.encode(SERVICE_TYPE, "UTF-8"));
            formParams.append("&sign=").append(URLEncoder.encode(sign, "UTF-8"));
            formParams.append("&bizData=").append(URLEncoder.encode(bizDataStr, "UTF-8"));
            String formBody = formParams.toString();

            // 4. 发送POST请求（表单格式，UTF-8编码）
            return doPost(API_URL, formBody);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 百世签名生成方式：MD5(bizData + partnerKey)，再转大写
     */
    private static String genSign(String bizData, String partnerKey) throws Exception {
        String toSign = bizData + partnerKey;
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        md5.update(toSign.getBytes("UTF-8"));
        byte[] digest = md5.digest();
        StringBuilder sb = new StringBuilder();
        for (byte b : digest) {
            sb.append(String.format("%02x", b));
        }
        return sb.toString();
    }

    /**
     * 发送POST请求（表单格式，UTF-8编码）
     */
    private static OaExpressVo doPost(String urlStr, String formBody) throws Exception {
        URL url = new URL(urlStr);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
        conn.setDoOutput(true);
        try (OutputStream os = conn.getOutputStream()) {
            os.write(formBody.getBytes(StandardCharsets.UTF_8));
        }
        int code = conn.getResponseCode();
        if (code == 200) {
            try (BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8))) {
                StringBuilder sb = new StringBuilder();
                String line;
                while ((line = br.readLine()) != null) {
                    sb.append(line);
                }
                return parseData(sb.toString());
            }
        } else {
            throw new RuntimeException("HTTP请求失败，状态码：" + code);
        }
    }

    /**
     * 解析百世快递返回数据，只取第一个轨迹的acceptTime和remark
     */
    public static OaExpressVo parseData(String result) {
        if (StringUtils.isBlank(result)) {
            System.out.println("返回结果为空");
            return null;
        }
        try {
            JSONObject json = JSON.parseObject(result);
            Boolean success = json.getBoolean("result");
            if (success == null || !success) {
                System.out.println("查询失败：" + json.getString("resultInfo"));
                return null;
            }
            JSONArray orderTraceList = json.getJSONArray("orderTraceList");
            if (orderTraceList == null || orderTraceList.isEmpty()) {
                System.out.println("无轨迹信息");
                return null;
            }
            // 只取第一个轨迹的最后一个步骤
            JSONObject orderTrace = orderTraceList.getJSONObject(0);
            JSONArray steps = orderTrace.getJSONArray("steps");
            if (steps == null || steps.isEmpty()) {
                System.out.println("无轨迹步骤信息");
                return null;
            }
            JSONObject step = steps.getJSONObject(steps.size() - 1);
            OaExpressVo vo = new OaExpressVo();
            vo.setExpressCode(orderTrace.getString("code"));
            vo.setFirstStatusName(step.getString("remark"));
            String acceptTimeStr = step.getString("acceptTime");
            if (acceptTimeStr != null) {
                // 假设格式为 yyyy-MM-dd HH:mm:ss
                try {
                    vo.setAcceptTime(java.sql.Timestamp.valueOf(acceptTimeStr));
                } catch (Exception e) {
                    vo.setAcceptTime(null);
                }
            }
            return vo;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    // main方法测试
    public static void main(String[] args) {
        String mailNo = "80004559434";
        OaExpressVo vo = queryRoute(mailNo);
        System.out.println(vo);
    }
}