package com.vci.ubcs.system.service.impl;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.vci.ubcs.common.constant.CommonConstant;
import com.vci.ubcs.system.cache.NacosConfigCache;
import com.vci.ubcs.system.entity.Strategy;
import com.vci.ubcs.system.mapper.StrategyMapper;
import com.vci.ubcs.system.service.IStrategyService;
import com.vci.ubcs.system.user.feign.IUserClient;
import org.springblade.core.cache.utils.CacheUtil;
import org.springblade.core.log.exception.ServiceException;
import org.springblade.core.mp.support.Query;
import org.springblade.core.secure.utils.AuthUtil;
import org.springblade.core.tool.utils.Func;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.Date;
import java.util.List;

import static org.springblade.core.cache.constant.CacheConstant.SYS_CACHE;

/**
 * 密码策略(Strategy)表服务实现类
 *
 * @author makejava
 * @since 2023-03-20 15:25:05
 */
@Service
public class StrategyServiceImpl extends ServiceImpl<StrategyMapper, Strategy> implements IStrategyService {

	@Resource
	private StrategyMapper strategyMapper;

	@Resource
	private UserPwdstrategyServiceImpl userPwdstrategyService;

	@Resource
	private IUserClient userClient;

	/**
	 * 通过ID查询单条数据
	 *
	 * @param id 主键
	 * @return 实例对象
	 */
	@Override
	public Strategy queryById(String id) {
		return this.getById(id);
	}

	/**
	 * 查询默认密码策略
	 * @return
	 */
	@Override
	public Strategy queryByIsDefault() {
		return this.strategyMapper.queryByIsDefault(AuthUtil.getTenantId()
			.equals(
				NacosConfigCache
					.getAdminUserInfo()
					.getTenantId()
			) ? null:AuthUtil.getTenantId()
		);
	}

	/**
	 * 分页查询
	 *
	 * @param query 分页对象
	 * @return 查询结果
	 */
	@Override
	public IPage<Strategy> queryAllByPage(Query query) {
		Page<Strategy> strategyPage = new Page<>(query.getCurrent(), query.getSize());
		// 添加租户查询条件
		IPage<Strategy> strategyIPage = this.strategyMapper.queryAllByPage(
			strategyPage,
			AuthUtil.getTenantId()
				.equals(
					NacosConfigCache
					.getAdminUserInfo()
					.getTenantId()
				)
			? null:AuthUtil.getTenantId()
		);
		return strategyIPage;
	}

	/**
	 * 新增数据或者修改数据
	 *
	 * @param strategy 实例对象
	 * @return 实例对象
	 */
	@Override
	@Transactional(rollbackFor = Exception.class)
	public boolean submit(Strategy strategy) {
		//老的默认密码策略
		Long oldIsDefaultStrategy = null;
		//判断是否携带id，不携带id为新增操作
		if(Func.isEmpty(strategy.getId())){
			//执行新增
			Strategy dbstrategy = this.getOne(Wrappers.<Strategy>query().lambda()
				.eq(Strategy::getStrategyName, strategy.getStrategyName()));
			//如果数据库中存在这条组合名称的记录直接返回
			if(!Func.isEmpty(dbstrategy)){
				throw new ServiceException("该密码策略已存在!");
			}
			//检验密码策略是否符合要求
			checkPwdStrategy(strategy);
			//如果当前新增设置为默认密码策略，需要将已存在默认密码策略修改为非默认
			if(strategy.getIsDefault().equals("1") || strategy.getIsDefault() == 1){
				//查询老的默认密码策略，便于下面修改
				oldIsDefaultStrategy = this.queryByIsDefault().getId();
				this.update(Wrappers.<Strategy>update().lambda()
					.set(Strategy::getIsDefault, CommonConstant.NOT_DEFAULT)
					.eq(Strategy::getIsDefault, CommonConstant.IS_DEFAULT));
			}
			//创建时间和修改时间添加
			if(Func.isEmpty(strategy.getCreateTime())||Func.isEmpty(strategy.getUpdateTime())){
				strategy.setCreateTime(new Date());
				strategy.setUpdateTime(new Date());
			}
			boolean temp = super.saveOrUpdate(strategy);
			return temp && updateUserStrategyDefault(temp,oldIsDefaultStrategy);
		}else {
			//检验密码策略是否符合要求
			checkPwdStrategy(strategy);
			//如果当前修改设置为默认密码策略，需要将已存在默认密码策略修改为非默认
			if((strategy.getIsDefault().toString()).equals("1")){
				//查询老的默认密码策略，便于下面修改
				Strategy strategyDefault = this.queryByIsDefault();
				// 在数据不出现问题的情况下不会出现strategyDefault为空的情况
				if(Func.isNotEmpty(strategyDefault)){
					oldIsDefaultStrategy = strategyDefault.getId();
					this.update(Wrappers.<Strategy>update().lambda()
						.set(Strategy::getIsDefault,CommonConstant.NOT_DEFAULT)
						.eq(Strategy::getIsDefault,CommonConstant.IS_DEFAULT));
				}
			}else {
				// 避免用户将唯一的默认密码策略改为非默认
				if(Func.isEmpty(queryByIsDefault())){
					throw new ServiceException("默认密码策略必须有且仅有一条!");
				}
			}
			strategy.setUpdateTime(new Date());
			CacheUtil.clear(SYS_CACHE, Boolean.FALSE);
			boolean temp1 = this.update(strategy,Wrappers.<Strategy>update().lambda().eq(Strategy::getId,strategy.getId()));
			boolean temp2 = false;
			if(Func.isNotEmpty(oldIsDefaultStrategy)){
				temp2 = updateUserStrategyDefault(temp1, oldIsDefaultStrategy);
			}
			return temp1 || temp2;
		}
	}

	/**
	 * 修改使用默认密码策略的用户状态
	 * @param oldIsDefaultStrategy
	 */
	private boolean updateUserStrategyDefault(boolean temp,Long oldIsDefaultStrategy){
		boolean resBoolean = false;
		/**
		 * 产生新的默认密码策略，需要将以前采用默认密码策略的用户做一个更改提醒，由于未出现在关联表中的用户都是采用的默认密码策略，所以需要做一个连接查询出用户id
		 */
		if(temp && Func.isNotEmpty(oldIsDefaultStrategy)){
			List<Long> userIds = userPwdstrategyService.queryByUseISDefault(oldIsDefaultStrategy);
			if (Func.isNotEmpty(userIds)){
				resBoolean = userClient.updateStrategyStatus(userIds).getData();
			}
		}
		return resBoolean;
	}

	/**
	 * 	检验密码策略是否符合要求
	 * @param strategy
	 */
	private void checkPwdStrategy(Strategy strategy){
		if(strategy.getRequiredType() > strategy.getCombinationIds().split(",").length){
			throw new ServiceException("必填种类不能大于所选择的密码组合方式的个数!");
		}
		if(strategy.getMaxPwdLen() < strategy.getMinPwdLen()){
			throw new ServiceException("密码最大长度不能小于最小长度!");
		}
		if(Func.isNotEmpty(strategy.getRequiredType()) && (strategy.getMinPwdLen() < strategy.getRequiredType() || strategy.getMaxPwdLen() < strategy.getRequiredType())){
			throw new ServiceException("密码最小长度不能小于必填种类的值!");
		}
		if(strategy.getExpirationTime() <= strategy.getReminderTime()){
			throw new ServiceException("过期时间不能小于提醒时间!");
		}
		//判断前端是否未提交，是否默认字段
		if(Func.isEmpty(strategy.getIsDefault())){
			strategy.setIsDefault(0L);
		}
	}

	/**
	 * 通过主键删除数据
	 *
	 * @param ids 主键
	 * @return 是否成功
	 */
	@Override
	public boolean deleteByIds(List<String> ids) {
		Strategy strategy = this.getOne(Wrappers.<Strategy>query().lambda()
			.in(Strategy::getId,ids)
			.eq(Strategy::getIsDefault, CommonConstant.IS_DEFAULT));
		//如果存在默认策略的id，就不能直接删除给出提示
		if(!Func.isEmpty(strategy)){
			throw new ServiceException("不能删除默认密码策略!");
		}
		boolean tenantTemp = this.removeBatchByIds(ids);
		return tenantTemp;
	}

	/**
	 * 通过租户id以及用户名查询密码策略
	 * @param tenantId
	 * @param name
	 * @return
	 */
	@Override
	public Strategy queryByNameAndTenantId(String tenantId, String name) {
		Strategy strategy = this.strategyMapper.queryByNameAndTenantId(tenantId,name);
		if(!Func.isEmpty(strategy)){
			return strategy;
		}
		return queryByIsDefault();
	}

	/**
	 * 根据用户id查询密码策略
	 * @param userId
	 * @return
	 */
	@Override
	public Strategy queryByUserId(Long userId) {
		Strategy strategy = this.strategyMapper.queryByUserId(userId);
		if(!Func.isEmpty(strategy)){
			return strategy;
		}
		return queryByIsDefault();
	}

}