package com.zhitan.framework.web.service;

import cn.hutool.core.collection.CollUtil;
import com.zhitan.common.config.keycloak.AuthKeycloakRequest;
import com.zhitan.common.constant.CacheConstants;
import com.zhitan.common.constant.Constants;
import com.zhitan.common.constant.UserConstants;
import com.zhitan.common.core.domain.entity.SysUser;
import com.zhitan.common.core.domain.model.LoginUser;
import com.zhitan.common.core.redis.RedisCache;
import com.zhitan.common.exception.ServiceException;
import com.zhitan.common.exception.user.*;
import com.zhitan.common.utils.DateUtils;
import com.zhitan.common.utils.MessageUtils;
import com.zhitan.common.utils.SocialUtils;
import com.zhitan.common.utils.StringUtils;
import com.zhitan.common.utils.ip.IpUtils;
import com.zhitan.framework.manager.AsyncManager;
import com.zhitan.framework.manager.factory.AsyncFactory;
import com.zhitan.framework.security.context.AuthenticationContextHolder;
import com.zhitan.framework.security.single.SingleAuthenticationToken;
import com.zhitan.system.domain.SysSocial;
import com.zhitan.system.domain.bo.SysSocialBo;
import com.zhitan.system.domain.vo.SysSocialVo;
import com.zhitan.system.service.ISysConfigService;
import com.zhitan.system.service.ISysSocialService;
import com.zhitan.system.service.ISysUserService;
import me.zhyd.oauth.model.AuthCallback;
import me.zhyd.oauth.model.AuthResponse;
import me.zhyd.oauth.model.AuthToken;
import me.zhyd.oauth.model.AuthUser;
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 javax.annotation.Resource;
import java.util.List;

/**
 * 登录校验方法
 *
 * @author zhitan
 */
@Component
public class SysLoginService
{
    @Resource
    private TokenService tokenService;

    @Resource
    private AuthenticationManager authenticationManager;

    @Resource
    private RedisCache redisCache;

    @Resource
    private ISysUserService userService;

    @Resource
    private ISysConfigService configService;

    @Resource
    private ISysSocialService sysSocialService;

    @Resource
    private SysPermissionService permissionService;

    /**
     * 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)
    {
        // 验证码校验
//        validateCaptcha(username, code, uuid);
        // 登录前置校验
        loginPreCheck(username, password);
        // 用户验证
        Authentication authentication = null;
        try
        {
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username, 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.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            }
            else
            {
                AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        }
        finally
        {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }





    public String loginByCode(String code,String state)
    {
        AuthKeycloakRequest authRequest = SocialUtils.getAuthKeyloakRequest();
       // AuthToken accessToken = authRequest.getAccessToken(passwordLoginBody);
        AuthCallback callback = new AuthCallback();
        callback.setCode(code);
        callback.setState(state);
        AuthResponse<AuthUser> res = authRequest.login(callback);
        AuthUser authUserData = res.getData();
        // 新增KEYCLOAK用户自动创建逻辑
        String authId = authUserData.getSource() + authUserData.getUuid();
        List<SysSocial> list = sysSocialService.selectByAuthId(authId);
        if (CollUtil.isEmpty(list)) {
            // 自动创建新用户
            SysUser newUser = new SysUser();
            newUser.setUserName(authUserData.getUsername());
            newUser.setEmail(authUserData.getEmail());
            newUser.setNickName(authUserData.getNickname());
            newUser.setPassword("Initial123@"); // 初始密码需符合安全策略
            newUser.setStatus("0");

            userService.insertUser(newUser); // 假设存在插入方法

            // 创建社交绑定记录
            SysSocialBo newSocial = new SysSocialBo();
            newSocial.setUserId(newUser.getUserId());
            newSocial.setUserName(newUser.getUserName());
            newSocial.setAuthId(authId);
            newSocial.setSource(authUserData.getSource());
            newSocial.setOpenId(authUserData.getUuid());
            newSocial.setAccessToken(authUserData.getToken().getAccessToken());
            newSocial.setRefreshToken(authUserData.getToken().getRefreshToken());
            newSocial.setIdToken(authUserData.getToken().getIdToken());
            sysSocialService.insertByBo(newSocial); // 需确保服务有新增方法

            // 重新查询确保数据可用
            list = sysSocialService.selectByAuthId(authId);
        } else {
            // 更新社交绑定记录
            SysSocialBo socialBo = new SysSocialBo();
            socialBo.setId(list.get(0).getId());
            socialBo.setAccessToken(authUserData.getToken().getAccessToken());
            socialBo.setRefreshToken(authUserData.getToken().getRefreshToken());
            socialBo.setIdToken(authUserData.getToken().getIdToken());
            sysSocialService.updateByBo(socialBo);

        }
        list = sysSocialService.selectByAuthId(authUserData.getSource() + authUserData.getUuid());
        if (CollUtil.isEmpty(list)) {
            throw new ServiceException("你还没有绑定第三方账号，绑定后才可以登录！");
        }
        LoginUser loginUser = new LoginUser();
        loginUser.setUser(userService.selectUserById(list.get(0).getUserId()));
        loginUser.setUserId(list.get(0).getUserId());
        loginUser.setPermissions(permissionService.getMenuPermission(loginUser.getUser()));
        // 生成token
        return tokenService.createToken(loginUser);
    }

    /**
     * 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)
    {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled)
        {
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + StringUtils.nvl(uuid, "");
            String captcha = redisCache.getCacheObject(verifyKey);
            redisCache.deleteObject(verifyKey);
            if (captcha == null)
            {
                AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            if (!code.equalsIgnoreCase(captcha))
            {
                AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
        }
    }

    /**
     * 登录前置校验
     * @param username 用户名
     * @param password 用户密码
     */
    public void loginPreCheck(String username, String password)
    {
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password))
        {
            AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (password.length() < UserConstants.PASSWORD_MIN_LENGTH
                || password.length() > UserConstants.PASSWORD_MAX_LENGTH)
        {
            AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // 用户名不在指定范围内 错误
        if (username.length() < UserConstants.USERNAME_MIN_LENGTH
                || username.length() > UserConstants.USERNAME_MAX_LENGTH)
        {
            AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // IP黑名单校验
        String blackStr = configService.selectConfigByKey("sys.login.blackIPList");
        if (IpUtils.isMatchedIp(blackStr, IpUtils.getIpAddr()))
        {
            AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }

    /**
     * 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());
        sysUser.setLoginDate(DateUtils.getNowDate());
        userService.updateUserProfile(sysUser);
    }


    /**
     * 登录验证
     * @param username
     * @return 结果
     */
    public String loginNoCode(String username)
    {
        // 用户验证
        Authentication authentication = null;
        try
        {
            authentication = authenticationManager
                    .authenticate(new SingleAuthenticationToken(username));
        }
        catch (Exception e)
        {
            if (e instanceof BadCredentialsException)
            {
                AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            }
            else
            {
                AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        }
        AsyncManager.me().execute(AsyncFactory.recordLoginInfo(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }
}