content: package org.jeecg.modules.system.service.impl;
  
  import java.util.*;
  
  import org.jeecg.common.constant.CacheConstant;
  import org.jeecg.common.util.IPUtils;
  import org.jeecg.common.util.SpringContextUtils;
  import org.jeecg.common.util.oConvertUtils;
  import org.jeecg.modules.system.entity.SysRolePermission;
  import org.jeecg.modules.system.mapper.SysRolePermissionMapper;
  import org.jeecg.modules.system.service.ISysRolePermissionService;
  
  import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
  import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
  import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
  
  import org.springframework.cache.annotation.CacheEvict;
  import org.springframework.stereotype.Service;
  
  import javax.servlet.http.HttpServletRequest;
  
  /**
   * <p>
   * 角色权限表 服务实现类
   * </p>
   *
   * @Author scott
   * @since 2018-12-21
   */
  @Service
  public class SysRolePermissionServiceImpl extends ServiceImpl<SysRolePermissionMapper, SysRolePermission> implements ISysRolePermissionService {
  
  	@Override
  	public void saveRolePermission(String roleId, String permissionIds) {
  		String ip = "";
  		try {
  			//获取request
  			HttpServletRequest request = SpringContextUtils.getHttpServletRequest();
  			//获取IP地址
  			ip = IPUtils.getIpAddr(request);
  		} catch (Exception e) {
  			ip = "127.0.0.1";
  		}
  		LambdaQueryWrapper<SysRolePermission> query = new QueryWrapper<SysRolePermission>().lambda().eq(SysRolePermission::getRoleId, roleId);
  		this.remove(query);
  		List<SysRolePermission> list = new ArrayList<SysRolePermission>();
          String[] arr = permissionIds.split(",");
  		for (String p : arr) {
  			if(oConvertUtils.isNotEmpty(p)) {
  				SysRolePermission rolepms = new SysRolePermission(roleId, p);
  				rolepms.setOperateDate(new Date());
  				rolepms.setOperateIp(ip);
  				list.add(rolepms);
  			}
  		}
  		this.saveBatch(list);
  	}
  
  	@Override
  	public void saveRolePermission(String roleId, String permissionIds, String lastPermissionIds) {
  		String ip = "";
  		try {
  			//获取request
  			HttpServletRequest request = SpringContextUtils.getHttpServletRequest();
  			//获取IP地址
  			ip = IPUtils.getIpAddr(request);
  		} catch (Exception e) {
  			ip = "127.0.0.1";
  		}
  		List<String> add = getDiff(lastPermissionIds,permissionIds);
  		if(add!=null && add.size()>0) {
  			List<SysRolePermission> list = new ArrayList<SysRolePermission>();
  			for (String p : add) {
  				if(oConvertUtils.isNotEmpty(p)) {
  					SysRolePermission rolepms = new SysRolePermission(roleId, p);
  					rolepms.setOperateDate(new Date());
  					rolepms.setOperateIp(ip);
  					list.add(rolepms);
  				}
  			}
  			this.saveBatch(list);
  		}
  		
  		List<String> delete = getDiff(permissionIds,lastPermissionIds);
  		if(delete!=null && delete.size()>0) {
  			for (String permissionId : delete) {
  				this.remove(new QueryWrapper<SysRolePermission>().lambda().eq(SysRolePermission::getRoleId, roleId).eq(SysRolePermission::getPermissionId, permissionId));
  			}
  		}
  	}
  	
  	/**
  	 * 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;
  	}
  
  }
  