package com.upchina.business.service;

import cn.hutool.crypto.SecureUtil;
import cn.hutool.http.HttpRequest;
import cn.hutool.json.JSONUtil;
import com.upchina.business.vo.*;
import com.upchina.common.handler.BizException;
import com.upchina.common.result.ResponseStatus;
import com.upchina.common.util.logger.LoggerUtil;
import org.springframework.stereotype.Service;

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

// business信息Service
@Service
public class BusinessApiService {
    
    private String host = "https://webdzapi.ceniu.sztg.com";

    private String loginUrl = "/common/loginByUserName";

    private String getUserUrl = "/common/getUserByToken";

    private String getUserModuleListUrl = "/user/getUserModuleList";

    private String authorizationDeptId = "16";

    private String authorizationKey = "56e670eea5ff3a1aebbc02820e908ceb56e670eea5ff3a1aebbc02820e908ceb";

//    private String authorizationDeptId = "33";
//
//    private String authorizationKey = "90804bd6089d950e8804c6d7cad7558a90804bd6089d950e8804c6d7cad7558a";

    private static final int timeout = 10000;

    private static final int SUCCESS_CODE = 200;

    private static final int TOKEN_ERROR_CODE = 401;

    public BusinessLoginVO loginByUserName(String userName, String password) {
        Map<String, Object> params = new HashMap<>();
        params.put("username", userName);
        params.put("password", sha512(password));
        BusinessLoginRspVO vo = post(loginUrl, params, BusinessLoginRspVO.class);
        return vo.getData();
    }

    public BusinessUserVO getUserByToken(String token) {
        Map<String, Object> params = new HashMap<>();
        params.put("token", token);
        BusinessUserRspVO vo = post(getUserUrl, params, BusinessUserRspVO.class);
        return vo.getData();
    }

    public List<BusinessModuleVO> getUserModuleList(String userId) {
        Map<String, Object> params = new HashMap<>();
        params.put("userId", userId);
        BusinessModuleRspVO vo = post(getUserModuleListUrl, params, BusinessModuleRspVO.class);
        return vo.getData();
    }

    public static void main(String[] args) {
        BusinessApiService service = new BusinessApiService();
        BusinessLoginVO loginVO = service.loginByUserName("sz545138", "Abc@123");
        String token = loginVO.getToken();
        BusinessUserVO userVO = service.getUserByToken(token);
        System.out.println(JSONUtil.toJsonStr(userVO));
        service.getUserModuleList(userVO.getUserId().toString());
    }

    private <T extends BusinessVO> T post(String url, Map<String, Object> params, Class<T> type) {
        T vo;
        try {
            if (params == null) {
                params = new HashMap<>();
            }
            String body = JSONUtil.toJsonStr(params);
            Map<String, List<String>> header = buildHeader();
            LoggerUtil.api.info("url:" + url + ",body:" + body, ",header:" + JSONUtil.toJsonStr(header));
            String response = HttpRequest.post(host + url)
                    .body(body, "application/json")
                    .header(header, true)
                    .timeout(timeout)//超时，毫秒
                    .execute().body();
            LoggerUtil.api.info("response:" + response);
            vo = JSONUtil.toBean(response, type);
            LoggerUtil.api.info("vo:" + JSONUtil.toJsonStr(vo));
            if (vo.getCode() == null) {
                throw new BizException(ResponseStatus.OUTSYS_ERROR, "协议异常:" + vo.getMessage());
            } else if (vo.getCode() == SUCCESS_CODE) {
                return vo;
            } else if (vo.getCode() == TOKEN_ERROR_CODE) {
                throw new BizException(ResponseStatus.SESSION_EXPIRY);
            } else {
                throw new BizException(ResponseStatus.OUTSYS_ERROR, vo.getCode() + ":" + vo.getMessage());
            }
        } catch (BizException e) {
            throw e;
        } catch (Exception e) {
            throw new BizException(ResponseStatus.OUTSYS_ERROR, e);
        }
    }

    private String encodeSign(String time) {
        return SecureUtil.md5(authorizationKey + authorizationDeptId + time);
    }

    private static String sha512(String str) {
        try {
            // 获取SHA-512算法的MessageDigest实例
            MessageDigest digest = MessageDigest.getInstance("SHA-512");
            // 将输入字符串转换为字节数组并计算哈希值
            byte[] hashBytes = digest.digest(str.getBytes(StandardCharsets.UTF_8));
            // 将字节数组转换为十六进制字符串
            StringBuilder hexString = new StringBuilder();
            for (byte b : hashBytes) {
                String hex = Integer.toHexString(0xff & b);
                if (hex.length() == 1) hexString.append('0');
                hexString.append(hex);
            }
            return hexString.toString();
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
    }

    private Map<String, List<String>> buildHeader() {
        Map<String, List<String>> header = new HashMap<>();
        String time = String.valueOf(System.currentTimeMillis());
        header.put("Authorization-Dept-Id", List.of(authorizationDeptId));
        header.put("Authorization-Sign-Time", List.of(time));
        header.put("Authorization-Sign", List.of(encodeSign(time)));
        return header;
    }

}