package com.whyc.service;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.whyc.dto.Response;
import com.whyc.mapper.CommonMapper;
import com.whyc.mapper.PermitGroupMapper;
import com.whyc.mapper.PermitGroupUserMapper;
import com.whyc.mapper.UserMapper;
import com.whyc.pojo.db_user.Permitgroup;
import com.whyc.pojo.db_user.PermitgroupUsr;
import com.whyc.pojo.db_user.User;
import com.whyc.util.ActionUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Transactional
public class PermitGroupService {

    @Resource
    private PermitGroupMapper mapper;

    @Resource
    private PermitGroupUserMapper permitGroupUserMapper;

    @Resource
    private CommonMapper commonMapper;

    @Resource
    private UserMapper userInfMapper;

    @Autowired
    private UserService userService;

    @Transactional
    public Response<Boolean> add(List<Permitgroup> permitGroupList) {
        //首先校验当前用户所在的权限组,是否存在权限编辑权限 permit_edit_permit
       // if (!checkUserPermit()) return new Response<Boolean>().set(1, false, "当前用户没有权限编辑权限组");
        Response<Boolean> response = new Response();
        //权限互斥,查询已存在的权限组,不允许存在权限完全一样的权限组
       /* QueryWrapper<PermitGroup> wrapper = Wrappers.query();
        //wrapper.select("permit_group_id","permit_item_name","permit_item_value");
        wrapper.select("permit_group_id","permit_item_value").ge("permit_group_id",100);
        List<PermitGroup> existGroupList = mapper.selectList(wrapper);
        Map<Integer, List<PermitGroup>> existGroupListMap = existGroupList.stream().collect(Collectors.groupingBy(PermitGroup::getPermitGroupId));
        Set<Integer> keySet = existGroupListMap.keySet();
        Iterator<Integer> iterator = keySet.iterator();
        while (iterator.hasNext()){
            boolean diff = false;
            List<PermitGroup> existGroupListII = existGroupListMap.get(iterator.next());
            for (int i = 0; i < existGroupListII.size(); i++) {
                if(!permitGroupList.get(i).getPermitItemValue().equals(existGroupListII.get(i).getPermitItemValue())){
                    //存在差异,进入下个组校验
                    diff = true;
                    break;
                }
            }
            //如果每项都不存在差异
            if(!diff){
                return response.set(1,false,"有存在权限完全相同的权限组,无法添加");
            }
        }*/
        //权限组id生成
        int maxValue = (int) commonMapper.getMaxValue("db_user", "tb_permitgroup", "permit_group_id");
        int newPermitGroupId = maxValue+1;
        permitGroupList.stream().forEach(permitGroup -> permitGroup.setPermitGroupId(newPermitGroupId));
        mapper.insertBatchSomeColumn(permitGroupList);
        return response.set(1,true,"添加成功");
    }
    //验证权限
    private boolean checkUserPermit() {
        Integer uId = ActionUtil.getUser().getId();
        List<String> itemList = permitGroupUserMapper.getItemList(uId);
        if (!itemList.contains("permit_edit_permit")){
            return false;
        }
        return true;
    }

    //验证指定权限
    public boolean checkUserPermitWithName(String permitName) {
        Integer uid = ActionUtil.getUser().getId();
        List<String> itemList = permitGroupUserMapper.getItemList(uid);
        if (!itemList.contains(permitName)){
            return false;
        }
        return true;
    }



    @Transactional
    public Response<Boolean> update(List<Permitgroup> permitGroupList) {
        //首先校验当前用户所在的权限组,是否存在权限编辑权限 permit_edit_permit
        //if (!checkUserPermit()) return new Response<Boolean>().set(1, false, "当前用户没有权限编辑权限组");
        Response<Boolean> response = new Response<>();
        //权限互斥,查询已存在的权限组,不允许存在权限完全一样的权限组(应该剔除掉数据库中的自己权限组的校验,可以不更新)
        /*QueryWrapper<PermitGroup> wrapper = Wrappers.query();
        //wrapper.select("permit_group_id","permit_item_name","permit_item_value");
        wrapper.select("permit_group_id","permit_item_value").ge("permit_group_id",100).ne("permit_group_id",permitGroupList.get(0).getPermitGroupId());
        List<PermitGroup> existGroupList = mapper.selectList(wrapper);
        Map<Integer, List<PermitGroup>> existGroupListMap = existGroupList.stream().collect(Collectors.groupingBy(PermitGroup::getPermitGroupId));
        Set<Integer> keySet = existGroupListMap.keySet();
        Iterator<Integer> iterator = keySet.iterator();
        while (iterator.hasNext()){
            boolean diff = false;
            List<PermitGroup> existGroupListII = existGroupListMap.get(iterator.next());
            for (int i = 0; i < existGroupListII.size(); i++) {
                if(!permitGroupList.get(i).getPermitItemValue().equals(existGroupListII.get(i).getPermitItemValue())){
                    //存在差异,进入下个组校验
                    diff = true;
                    break;
                }
            }
            //如果每项都不存在差异
            if(!diff){
                return response.set(1,false,"有存在权限完全相同的权限组,无法更新");
            }
        }*/
        //先删除,后增加
        UpdateWrapper<Permitgroup> updateWrapper = Wrappers.update();
        updateWrapper.eq("permit_group_id",permitGroupList.get(0).getPermitGroupId());
        mapper.delete(updateWrapper);

        mapper.insertBatchSomeColumn(permitGroupList);
        return response.set(1,true,"更新成功");
    }

    @Transactional
    public boolean delete(Integer permitGroupId) {
        if(permitGroupId==100001){
            return false;
        }
        //删除权限组表记录
        UpdateWrapper<Permitgroup> groupWrapper = Wrappers.update();
        groupWrapper.eq("permit_group_id",permitGroupId);
        mapper.delete(groupWrapper);
        //删除权限组对应的用户记录
        UpdateWrapper<PermitgroupUsr> groupUserWrapper = Wrappers.update();
        groupUserWrapper.eq("permit_group_id",permitGroupId);
        permitGroupUserMapper.delete(groupUserWrapper);
        return true;

    }

    public List<Permitgroup> getList() {
        QueryWrapper<Permitgroup> wrapper = Wrappers.query();
        wrapper.select("distinct permit_group_id,permit_group_name");
        return mapper.selectList(wrapper);
    }

    public Map getPermitGroupInfo(Integer permitGroupId) {
        Map<String,List> resultMap = new HashMap<>();
        //查询权限组已添加的用户
        List<User> relatedUserInfList = permitGroupUserMapper.getUserInf(permitGroupId);
        //查询权限组未添加的用户
        //List<UserInf> allUserInfList = userInfMapper.selectList(null);
        //List<UserInf> notRelatedUserInfList = allUserInfList.stream().filter(userInf -> !relatedUserInfList.contains(userInf)).collect(Collectors.toList());
        //查询未被添加到所有权限组的用户
        List<User> notRelatedUserInfList = userService.searchCS_All2();
        //查询权限组的明细权限
        QueryWrapper<Permitgroup> wrapper = Wrappers.query();
        wrapper.eq("permit_group_id",permitGroupId);
        List<Permitgroup> permitGroupList = mapper.selectList(wrapper);

        resultMap.put("usersAdded",relatedUserInfList);
        resultMap.put("usersNotAdded",notRelatedUserInfList);
        resultMap.put("permits",permitGroupList);
        return resultMap;
    }

    public List<Permitgroup> getPermitList() {
        QueryWrapper<Permitgroup> wrapper = Wrappers.query();
        wrapper.select("distinct permit_item_name");
        List<Permitgroup> permitGroups = mapper.selectList(wrapper);
        return permitGroups;
    }
    //查询权限组信息
    public List<Permitgroup> getPermitGroup(int permitGroupId) {
        QueryWrapper<Permitgroup> wrapper = Wrappers.query();
        wrapper.eq("permit_group_id",permitGroupId);
        wrapper.eq("permit_item_value",1);
        List<Permitgroup> permitGroups = mapper.selectList(wrapper);
        return permitGroups;
    }
}