package com.ruoyi.framework.web.service;

import javax.annotation.Resource;

import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.utils.HttpUtil;
import com.ruoyi.common.utils.RSAPublicKeyExample;
import com.smartor.service.impl.ServiceSLTDHealthcareRecordServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.exception.user.CaptchaException;
import com.ruoyi.common.exception.user.CaptchaExpireException;
import com.ruoyi.common.exception.user.UserPasswordNotMatchException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MessageUtils;
import com.ruoyi.common.utils.ServletUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.ip.IpUtils;
import com.ruoyi.framework.manager.AsyncManager;
import com.ruoyi.framework.manager.factory.AsyncFactory;
import com.ruoyi.framework.security.context.AuthenticationContextHolder;
import com.ruoyi.system.service.ISysConfigService;
import com.ruoyi.system.service.ISysUserService;

import java.util.HashMap;
import java.util.Map;

/**
 * 登录校验方法
 *
 * @author ruoyi
 */
@Slf4j
@Component
public class SysLoginService {
    @Autowired
    private TokenService tokenService;

    @Resource
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    private ISysUserService userService;

    @Autowired
    private ISysConfigService configService;

    @Autowired
    private RSAPublicKeyExample rsaPublicKeyExample;

    @Value("${pri_key}")
    private String priKey;

    @Value("${isEncryp}")
    private Integer isEncryp;

    @Value("${sltd_pub_path}")
    private String sltdPubPath;

    @Value("${spring.profiles.active}")
    private String active;

    /**
     * 登录验证
     *
     * @param username 用户名
     * @param password 密码
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public String login(String username, String password, String code, String uuid, String orgid, String campusid) {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        // 验证码开关
        if (captchaEnabled) {
            validateCaptcha(username, code, uuid);
        }
        // 用户验证
        Authentication authentication = null;
        try {
            if (StringUtils.isEmpty(campusid)) campusid = "1";
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username + "&" + orgid + "&" + campusid, password);
            AuthenticationContextHolder.setContext(authenticationToken);
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            authentication = authenticationManager.authenticate(authenticationToken);
        } catch (Exception e) {
            if (e instanceof BadCredentialsException) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            } else {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        } finally {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }


    /**
     * SSO 单点登录业务处理
     * <p>
     * 1. 如果是 sltd 环境，先通过 SSO token 换取员工账号
     * 2. RSA 解密 userName（若开启加密）
     * 3. 根据 userName + orgid + deptId + campusid 生成登录 token
     *
     * @param userName 用户名（可能为空，如果 sltd 模式则从 token 中获取）
     * @param orgid    组织机构ID
     * @param deptId   部门ID
     * @param campusid 校区 ID
     * @param token    SLTD SSO token（仅 sltd 环境下使用）
     * @return 登录成功后的 JWT token，失败返回 null
     */
    public String ssoLogin(String userName, String orgid, String deptId, String campusid, String token) {
        // sltd 环境：通过 SSO token 获取员工账号
        if ("sltd".equals(active)) {
            userName = resolveUserNameBySltdToken(token);
            if (userName == null) {
                return null;
            }
        }

        log.info("【SSO登录】userName={}", userName);

        if (StringUtils.isEmpty(userName) || StringUtils.isEmpty(orgid)) {
            log.error("【SSO登录】用户名或组织机构不能为空");
            return null;
        }

        // RSA 解密用户名
        if (isEncryp != null && isEncryp == 1) {
            userName = rsaPublicKeyExample.decryptedData(userName, priKey);
        }

        if (StringUtils.isEmpty(deptId)) deptId = "null";
        if (StringUtils.isEmpty(campusid)) campusid = "null";
        return loginByUserName(userName + "&" + orgid + "&" + deptId + "&" + campusid);
    }

    /**
     * 调用省立同德接口，通过 SSO token 获取员工账号
     *
     * @param token SLTD SSO token
     * @return 员工账号，验证失败返回 null
     */
    private String resolveUserNameBySltdToken(String token) {
        Map<String, String> headers = new HashMap<>();
        headers.put("app-key", ServiceSLTDHealthcareRecordServiceImpl.APP_KEY);
        Map<String, String> requestParams = new HashMap<>();
        requestParams.put("token", token);
        String reqData = HttpUtil.postFormRequest(sltdPubPath + "/checkSsoTokenId", requestParams, headers, null);
        log.info("【SLTD token 验证】响应结果：{}", reqData);

        if (StringUtils.isEmpty(reqData)) {
            log.error("【SLTD token 验证】响应为空，验证失败");
            return null;
        }

        Map<String, Object> map = JSONObject.parseObject(reqData, Map.class);
        if (ObjectUtils.isEmpty(map) || (Integer) map.get("code") != 200) {
            log.error("【SLTD token 验证】响应码异常，验证失败");
            return null;
        }

        Map<String, Object> data = (Map<String, Object>) map.get("data");
        return (String) data.get("accountNo");
    }

    public String loginByUserName(String userName) {
        SysUser sysUser = userService.selectUserByUserNameAndDeptId(userName);
        log.info("---------sysUser的值为:{}", sysUser);
        if (ObjectUtils.isNotEmpty(sysUser)) {
            // 构建登录用户对象
            LoginUser loginUser = new LoginUser();
            loginUser.setUser(sysUser);
            loginUser.setUserId(sysUser.getUserId());
            // 创建 token
            String token = tokenService.createToken(loginUser);
            // 生成token
            return token;
        }
        return null;
    }

    /**
     * 校验验证码
     *
     * @param username 用户名
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public void validateCaptcha(String username, String code, String uuid) {
        String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
        String captcha = redisCache.getCacheObject(verifyKey);
        redisCache.deleteObject(verifyKey);
        if (captcha == null) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
            throw new CaptchaExpireException();
        }
        if (!code.equalsIgnoreCase(captcha)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
            throw new CaptchaException();
        }
    }

    /**
     * 记录登录信息
     *
     * @param userId 用户ID
     */
    public void recordLoginInfo(Long userId) {
        SysUser sysUser = new SysUser();
        sysUser.setUserId(userId);
        sysUser.setLoginIp(IpUtils.getIpAddr(ServletUtils.getRequest()));
        sysUser.setLoginDate(DateUtils.getNowDate());
        userService.updateUserProfile(sysUser);
    }
}