package com.ruoyi.web.service;

import javax.annotation.Resource;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.enums.AccessFromType;
import com.ruoyi.common.enums.ErrorCodes;
import com.ruoyi.common.exception.ErrorException;
import com.ruoyi.common.utils.PhoneUtils;
import com.ruoyi.dz.domain.DzCards;
import com.ruoyi.dz.service.IDzCardsService;
import com.ruoyi.dz.service.impl.DzCardsServiceImpl;
import com.ruoyi.framework.web.service.TokenService;
import com.ruoyi.system.domain.ZuserToken;
import com.ruoyi.system.service.IZuserTokenService;
import com.ruoyi.system.service.ShortMessageService;
import com.ruoyi.web.controller.dz.DzCardsController;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.tuple.Pair;
import org.springframework.beans.factory.annotation.Autowired;
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.constant.UserConstants;
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.BlackListException;
import com.ruoyi.common.exception.user.CaptchaException;
import com.ruoyi.common.exception.user.CaptchaExpireException;
import com.ruoyi.common.exception.user.UserNotExistsException;
import com.ruoyi.common.exception.user.UserPasswordNotMatchException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MessageUtils;
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 org.springframework.transaction.annotation.Transactional;

import java.util.*;
import java.util.stream.Collectors;

/**
 * 登录校验方法
 *
 * @author ruoyi
 */
@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 ShortMessageService shortMessageService;
    @Autowired
    private IDzCardsService cardsService;

    @Autowired
    private IZuserTokenService zuserTokenService;


    /**
     * 登录验证
     * @param mobile
     * @param username
     * @param password
     * @param code
     * @param uuid
     * @return
     */
    public AjaxResult login(String mobile, String username, String password, String code, String uuid,String type) {
        if (StringUtils.isNotBlank(mobile)) {
            //手机验证码登录：{code: "9", uuid: "cc94320c3fce4db5898213b727ac1dc0", mobile: "18774924158", password: "1234"}
            if (!shortMessageService.checkCode(mobile, password)) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(mobile, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
            loginMobilePreCheck(mobile, password);
            username = mobile;
            password = UserConstants.LOGIN_SMS_PASS;
        } else {
            // 验证码校验
            // 卡密登录json：{code: "0", uuid: "a9eee0b6729f42c4862a57acef8a4bdd", username: "20000025", password: "123456"}
            validateCaptcha(username, code, uuid);
            // 登录前置校验
            loginPreCheck(username, password);
            if(AccessFromType.isFrontApp(type)||AccessFromType.isH5(type)||AccessFromType.isWechat(type)){
                //卡密登录时，要将卡的密码转换为用户的密码。手机号的密码与卡的密码分开
                DzCards card = cardsService.selectDzCardsByCardNo(username);
                if (null==card){
                    if(username.length()>6&&username.length()<8){
                        //老师账号，直接跳过

                    }else if(username.length()>=8){
                        //卡用户
                        return AjaxResult.error("卡不存在");
                    }
                }
                if(null!=card&&username.length()>=8){
                    //卡用户
                    if (!password.trim().equalsIgnoreCase(card.getPassword())){
                        return AjaxResult.error("密码错误");
                    }
                    String dbPwd = userService.selectPasswordByCardId(card.getCardId());
                    if (StringUtils.isNotEmpty(dbPwd)){
                        password = dbPwd;
                    }
                }
            }
        }
        // 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.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()));
                if(e.getCause() instanceof ErrorException) {
                    ErrorException errorException = (ErrorException) e.getCause();
                    Map map = Maps.newHashMap();
                    ErrorCodes errorCode = errorException.getErrorCode();
                    map.put("code", errorCode.getCode());
                    map.put("message", StringUtils.isNotEmpty(errorException.getMessage()) ? errorException.getMessage() : errorCode.getTitle());
                    return AjaxResult.success(map);
                }
                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();
        Long userId = loginUser.getUserId();
        recordLoginInfo(userId);
        // 生成token
        AjaxResult ajax = AjaxResult.success();

        //单点登录
        resetTokensByUserIds(Arrays.asList(userId),true);

        // 生成token
        String token = tokenService.createToken(loginUser);

        ZuserToken userToken = new ZuserToken();
        userToken.setUserName(StringUtils.isEmpty(type)?username:(type+":"+username));
        userToken.setUserId(userId);
        userToken.setToken(token);
        userToken.setUpdateTime(new Date());
        zuserTokenService.insertZuserToken(userToken);

        ajax.put(Constants.TOKEN, token);

        return ajax;
    }


    /**
     * 此处不使用resetTokens是为了与志愿保持一致
     * 重置指定用户的登陆信息，强制重新登陆系统
     * @param userIds
     * @param isSso：适配志愿中锁分时也要清空用户token信息，此时设置为false，直接清空用户的token，设置为true就表示走单点登录的逻辑
     * @param isSetSso：后台配置的单点登录配置，设置为true时启用单点登录，为false时不启用单点登录
     * @return
     */
    public AjaxResult resetTokensByUserIds(List<Long> userIds,Boolean isSso) {
        if (isSso){
            String isSetSso = configService.selectConfigByKey( "is.set.sso");
            if (StringUtils.isBlank(isSetSso)||!Boolean.valueOf(isSetSso)){
                //参数配置的单点登录为false，此时不设置单点登录（将userids设置为空就不走清空流程），不需要清空用户已登录的token
                userIds = new ArrayList<>();
            }

            Set<String> excludeUserIdSet=new HashSet<>();
            String ssoWhiteListUserName = configService.selectConfigByKey("sso.white.list");
            if(StringUtils.isNotBlank(ssoWhiteListUserName)){
                Arrays.asList(ssoWhiteListUserName.split(",")).forEach(username->{
                    excludeUserIdSet.add(username);
                });
            }
            if (CollectionUtils.isNotEmpty(excludeUserIdSet)){
                List<Long> excludeUserIds = userService.selectUsers(null,null,excludeUserIdSet).stream().map(SysUser::getUserId).collect(Collectors.toList());
                //userIds减去excludeUserIds
                // 将排除的用户ID转化为Set，以便高效查找
                Set<Long> excludeSet = new HashSet<>(excludeUserIds);

                // 使用Stream API过滤掉排除的用户ID
                userIds = userIds.stream().filter(userId -> !excludeSet.contains(userId)).collect(Collectors.toList());
            }
        }
        return resetTokensByUserIds(userIds);
    }

    /**
     * 重置指定用户的登陆信息，强制重新登陆系统
     * @param startUserList
     * @return
     */
    public AjaxResult resetTokensByUserIds(List<Long> userIds) {
        if(CollectionUtils.isEmpty(userIds)){
            return AjaxResult.success();
        }
        ZuserToken zuserToken = new ZuserToken();
        zuserToken.setUserIds(userIds);
        List<ZuserToken> zuserTokenList = zuserTokenService.selectTopZuserTokenList(zuserToken);
        for (ZuserToken zt : zuserTokenList) {
            if(StringUtils.isNotNull(zt)){
                tokenService.removeUserToken(zt.getToken());
//                zuserTokenService.deleteZuserTokenById(zt.getId());
            }
        }
        List<Long> tokenIdList = zuserTokenList.stream().map(ZuserToken::getId).collect(Collectors.toList()).stream().distinct().collect(Collectors.toList());
        Long[] tokenIds = tokenIdList.toArray(new Long[tokenIdList.size()]);
        if(tokenIds.length>0){
            zuserTokenService.deleteZuserTokenByIds(tokenIds);
        }
        return AjaxResult.success();
    }

    public void updateBindStatus(Long userId, Integer bindStatus) {
        ZuserToken zuserToken = new ZuserToken();
        zuserToken.setUserIds(Lists.newArrayList(userId));
        List<ZuserToken> zuserTokenList = zuserTokenService.selectTopZuserTokenList(zuserToken);
        for (ZuserToken zt : zuserTokenList) {
            if(StringUtils.isNotNull(zt)){
                tokenService.updateBindStatus(zt.getToken(), bindStatus);
            }
        }
    }

    public AjaxResult resetTokens(List<SysUser> startUserList) {
        List<Long> userIds = startUserList.stream().map(SysUser::getUserId).collect(Collectors.toList());
        return resetTokensByUserIds(userIds);
    }

    /**
     * 重置指定用户的登陆信息，强制重新登陆系统
     * @param userName
     * @return
     */
    public AjaxResult resetTokens(String userName) {
        ZuserToken zuserToken = new ZuserToken();
        zuserToken.setUserName(userName);
        List<ZuserToken> zuserTokenList = zuserTokenService.selectTopZuserTokenList(zuserToken);
        for (ZuserToken zt : zuserTokenList) {
            if(StringUtils.isNotNull(zt)){
                tokenService.removeUserToken(zt.getToken());
                zuserTokenService.deleteZuserTokenById(zt.getId());
            }
        }
        return AjaxResult.success();
    }

    /**
     * 内部自动登陆，不记录日志
     * @param username
     * @param password
     * @return
     */
    public String loginInner(String username, String 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)
            {
                throw new UserPasswordNotMatchException();
            }
            else
            {
                throw new ServiceException(e.getMessage());
            }
        }
        finally
        {
            AuthenticationContextHolder.clearContext();
        }
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        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);
            if (captcha == null)
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            redisCache.deleteObject(verifyKey);
            if (!code.equalsIgnoreCase(captcha))
            {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(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.recordLogininfor(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.recordLogininfor(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.recordLogininfor(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.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }

    public void loginMobilePreCheck(String phoneNumber, String code)
    {
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(phoneNumber) || StringUtils.isEmpty(code))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(phoneNumber, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (code.length() != 4)
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(phoneNumber, 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 (!PhoneUtils.isPhoneNumber(phoneNumber))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(phoneNumber, 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.recordLogininfor(phoneNumber, 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)
    {
        userService.updateLoginInfo(userId, IpUtils.getIpAddr(), DateUtils.getNowDate());
    }
}