content: package org.jeecg.modules.system.service.impl;
  
  import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
  import org.jeecg.common.util.oConvertUtils;
  import org.jeecg.modules.system.entity.SysDepartRole;
  import org.jeecg.modules.system.entity.SysDepartRoleUser;
  import org.jeecg.modules.system.mapper.SysDepartRoleMapper;
  import org.jeecg.modules.system.mapper.SysDepartRoleUserMapper;
  import org.jeecg.modules.system.service.ISysDepartRoleUserService;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  
  import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
  import org.springframework.transaction.annotation.Transactional;
  
  import java.util.*;
  import java.util.stream.Collectors;
  
  /**
   * @Description: 部门角色人员信息
   * @Author: jeecg-boot
   * @Date:   2020-02-13
   * @Version: V1.0
   */
  @Service
  public class SysDepartRoleUserServiceImpl extends ServiceImpl<SysDepartRoleUserMapper, SysDepartRoleUser> implements ISysDepartRoleUserService {
      @Autowired
      private SysDepartRoleMapper sysDepartRoleMapper;
  
      @Override
      public void deptRoleUserAdd(String userId, String newRoleId, String oldRoleId) {
          List<String> add = getDiff(oldRoleId,newRoleId);
          if(add!=null && add.size()>0) {
              List<SysDepartRoleUser> list = new ArrayList<>();
              for (String roleId : add) {
                  if(oConvertUtils.isNotEmpty(roleId)) {
                      SysDepartRoleUser rolepms = new SysDepartRoleUser(userId, roleId);
                      list.add(rolepms);
                  }
              }
              this.saveBatch(list);
          }
          List<String> remove = getDiff(newRoleId,oldRoleId);
          if(remove!=null && remove.size()>0) {
              for (String roleId : remove) {
                  this.remove(new QueryWrapper<SysDepartRoleUser>().lambda().eq(SysDepartRoleUser::getUserId, userId).eq(SysDepartRoleUser::getDroleId, roleId));
              }
          }
      }
  
      @Override
      @Transactional(rollbackFor = Exception.class)
      public void removeDeptRoleUser(List<String> userIds, String depId) {
          for(String userId : userIds){
              List<SysDepartRole> sysDepartRoleList = sysDepartRoleMapper.selectList(new QueryWrapper<SysDepartRole>().eq("depart_id",depId));
              List<String> roleIds = sysDepartRoleList.stream().map(SysDepartRole::getId).collect(Collectors.toList());
              if(roleIds != null && roleIds.size()>0){
                  QueryWrapper<SysDepartRoleUser> query = new QueryWrapper<>();
                  query.eq("user_id",userId).in("drole_id",roleIds);
                  this.remove(query);
              }
          }
      }
  
      /**
       * 从diff中找出main中没有的元素
       * @param main
       * @param diff
       * @return
       */
      private List<String> getDiff(String main, String diff){
          if(oConvertUtils.isEmpty(diff)) {
              return null;
          }
          if(oConvertUtils.isEmpty(main)) {
              return Arrays.asList(diff.split(","));
          }
  
          String[] mainArr = main.split(",");
          String[] diffArr = diff.split(",");
          Map<String, Integer> map = new HashMap<>();
          for (String string : mainArr) {
              map.put(string, 1);
          }
          List<String> res = new ArrayList<String>();
          for (String key : diffArr) {
              if(oConvertUtils.isNotEmpty(key) && !map.containsKey(key)) {
                  res.add(key);
              }
          }
          return res;
      }
  }
  