package com.terra.system.service.sys;

import com.terra.common.entity.all.RedisCacheKey;
import com.terra.common.entity.all.SettingData;
import com.terra.system.entity.sys.LoginEntity;
import com.terra.system.entity.sys.TokenEntity;
import com.terra.system.entity.sys.UserEntity;
import com.terra.common.helper.StringHelper;
import com.terra.common.helper.WebHelper;
import com.terra.system.mapper.sys.TokenMapper;
import com.terra.system.mapper.sys.UserMapper;
import com.terra.common.service.RedisService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * 令牌表
 * @author sws
 * @date 2022-09-28
 */
@Service
public class TokenService implements TokenMapper {
    @Resource
    TokenMapper tokenMapper;

    @Resource
    UserMapper userMapper;

    @Resource
    LoginService loginService;

    @Resource
    RedisService redisService;

    @Override
    public Integer selectCount(String name, Integer type) {
        name = StringHelper.getLikeUpperStr(name);

        return tokenMapper.selectCount(name, type);
    }

    @Override
    public List<TokenEntity> selectByPage(String name, Integer type, Integer limit, Integer offset) {
        name = StringHelper.getLikeUpperStr(name);

        return tokenMapper.selectByPage(name, type, limit, offset);
    }

    @Override
    public TokenEntity selectToken(int id) {
        return tokenMapper.selectToken(id);
    }

    @Override
    public List<TokenEntity> selectByIds(List<Integer> ids) {
        return tokenMapper.selectByIds(ids);
    }

    @Override
    public TokenEntity selectOneById(Integer id) {
        return tokenMapper.selectOneById(id);
    }

    @Override
    public TokenEntity selectOneByToken(String token) {
        return tokenMapper.selectOneByToken(token);
    }

    @Override
    public List<TokenEntity> selectTokenAll() {
        return tokenMapper.selectTokenAll();
    }

    @Override
    public Integer insertToken(TokenEntity tokenEntity) {
        return tokenMapper.insertToken(tokenEntity);
    }

    @Override
    public Integer insertTokens(List<TokenEntity> tokenEntity) {
        return tokenMapper.insertTokens(tokenEntity);
    }

    @Override
    public Integer deleteToken(int id) {
        TokenEntity entity = tokenMapper.selectToken(id);
        if (null == entity) {
            return 0;
        }

        clearCache(entity.getToken());

        return tokenMapper.deleteToken(id);
    }

    @Override
    public Integer deleteTokens(List<Integer> ids) {
        List<TokenEntity> list = tokenMapper.selectByIds(ids);
        if (null == list || list.isEmpty()) {
            return 0;
        }

        for (TokenEntity entity : list) {
            clearCache(entity.getToken());
        }

        return tokenMapper.deleteTokens(ids);
    }

    @Override
    public Integer updateToken(TokenEntity tokenEntity) {
        return tokenMapper.updateToken(tokenEntity);
    }

    @Override
    public Integer updateTokenExpire(TokenEntity tokenEntity) {
        clearCache(tokenEntity.getToken());

        return tokenMapper.updateTokenExpire(tokenEntity);
    }

    /**
     * 获取新的令牌实体类
     */
    public TokenEntity getNewToken(UserEntity ue, HttpServletRequest req) {
        return getNewToken(0, SettingData.TOKEN_EXPIRE, ue, req);
    }

    /**
     * 获取新的令牌实体类
     */
    public TokenEntity getNewToken(Integer type, Integer min, UserEntity ue, HttpServletRequest req) {
        TokenEntity te = new TokenEntity();
        te.setToken(WebHelper.getGuid());
        te.setDuration(min);
        te.setExpire(WebHelper.getTimestamp(min));
        te.setType(type);
        te.setIp(WebHelper.getIpAddress(req));
        te.setCreateUser(ue.getId());
        te.setUname(ue.getUname());

        return te;
    }

    /**
     * 是/否登录
     */
    public Boolean isLogin(HttpServletRequest req, HttpServletResponse res) {
        String token = WebHelper.getToken(req);
        if (StringHelper.isNull(token)) {
            return false;
        }

        TokenEntity te = getEntityByToken(token);

        return null != te;
    }

    /**
     * 登出
     */
    public Boolean logout(String token, HttpServletRequest req, HttpServletResponse res) {
        TokenEntity te = getEntityByToken(token);
        if (null == te) {
            return false;
        }

        // 清除Cookie
        WebHelper.deleteCookies(req, res);

        // 获取当前用户
        UserEntity ue = getCurrentUser(req);
        if (ue == null) {
            return false;
        }

        // db，设置令牌过期
        te.setUpdateUser(ue.getId());
        Integer rows = updateTokenExpire(te);
        if (0 == rows) {
            return false;
        }

        // 写日志
        LoginEntity le = loginService.getNewLogin(ue.getId(), 1, 3, 1, req);
        rows = loginService.insertLogin(le);

        return rows > 0;
    }

    /**
     * 清除缓存
     */
    public void clearCache(String token) {
        String tokenKey = RedisCacheKey.signTokenKey(token);
        redisService.delete(tokenKey);
        String userKey = RedisCacheKey.signUserKey(token);
        redisService.delete(userKey);
    }

    /**
     * 根据令牌获取实体
     */
    public TokenEntity getEntityByToken(String token) {
        String tokenKey = RedisCacheKey.signTokenKey(token);

        // redis
        Object obj = redisService.get(tokenKey);
        if (obj instanceof TokenEntity) {
            return (TokenEntity) obj;
        }

        // db
        TokenEntity te = selectOneByToken(token);
        if (null != te) {
            long min = StringHelper.getMinuteDifference(te.getExpire());
            if (min > 0) {
                redisService.put(tokenKey, te, min, TimeUnit.MINUTES);
            }
        }

        return te;
    }

    /**
     * 保存token
     */
    public void saveToken(UserEntity ue, TokenEntity te, HttpServletRequest req, HttpServletResponse res) {
        // 保存至Cookie
        WebHelper.saveToken2Cookie(te.getToken(), req, res);

        // 令牌保存至Redis
        String tokenKey = RedisCacheKey.signTokenKey(te.getToken());
        redisService.put(tokenKey, te, te.getDuration(), TimeUnit.MINUTES);

        String userKey = RedisCacheKey.signUserKey(te.getToken());
        ue.setBak(StringHelper.YMDHMS_FORMAT.format(new Date()));
        redisService.put(userKey, ue, te.getDuration(), TimeUnit.MINUTES);
    }

    /**
     * 获取当前用户
     */
    public UserEntity getCurrentUser(HttpServletRequest req) {
        String token = WebHelper.getToken(req);

        return getUserByToken(token);
    }

    /**
     * 根据令牌获取用户
     */
    public UserEntity getUserByToken(String token) {
        if (StringHelper.isNull(token)) {
            return null;
        }

        // redis
        String userKey = RedisCacheKey.signUserKey(token);
        Object obj = redisService.get(userKey);
        if (obj instanceof UserEntity) {
            return (UserEntity) obj;
        }

        // db
        UserEntity ue = userMapper.selectByToken(token);
        if (null != ue) {
            getEntityByToken(token);
        }

        return ue;
    }

    /**
     * 设置密码错误缓存
     */
    public void setPwdErrCache(UserEntity ue) {
        String key = RedisCacheKey.signPwdError(ue.getUid());
        Object objCount = redisService.get(key);

        int count = objCount == null ? 1 : (int) objCount + 1;
        redisService.put(key, count, SettingData.PWD_ERR_TIME, TimeUnit.MINUTES);

        // 记录日志
        HttpServletRequest req = WebHelper.getRequest();
        LoginEntity le = loginService.getNewLogin(ue.getId(), 1, 1, 0, req);
        le.setDescr("密码不正确");
        loginService.insertLogin(le);

        if (count >= SettingData.PWD_ERR_COUNT) {
            String token = WebHelper.getToken(req);
            HttpServletResponse res = WebHelper.getResponse();
            logout(token, req, res);
        }
    }

    /**
     * 用户ID是/否禁用
     */
    public boolean isUidDisable(UserEntity ue) {
        String key = RedisCacheKey.signPwdError(ue.getUid());
        Object objCount = redisService.get(key);

        return null != objCount && (int) objCount >= SettingData.PWD_ERR_COUNT;
    }
}