package com.xcong.farmer.cms.modules.system.service.Impl;

import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xcong.farmer.cms.common.response.Result;
import com.xcong.farmer.cms.modules.system.dto.AdminAddRoleDto;
import com.xcong.farmer.cms.modules.system.dto.AdminDeleteDto;
import com.xcong.farmer.cms.modules.system.dto.AdminRoleDto;
import com.xcong.farmer.cms.modules.system.dto.AdminUpdateRoleDto;
import com.xcong.farmer.cms.modules.system.entity.*;
import com.xcong.farmer.cms.modules.system.mapper.*;
import com.xcong.farmer.cms.modules.system.service.IRoleService;
import com.xcong.farmer.cms.modules.system.vo.AdminMenuInfoVo;
import com.xcong.farmer.cms.modules.system.vo.AdminRoleVo;
import com.xcong.farmer.cms.modules.system.vo.AdminSeeRoleInfoVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.collection.CollUtil;


@Service
@Slf4j
public class RoleServiceImpl extends ServiceImpl<RoleMapper, RoleEntity> implements IRoleService {

    @Resource
    private RoleMenuMapper roleMenuMapper;
    @Resource
    private UserRoleMapper userRoleMapper;
    @Resource
    private UserMapper userMapper;
    @Resource
    private MenuMapper menuMapper;

    @Override
    public Result getRoleInPage(AdminRoleDto adminRoleDto) {
        Page<AdminRoleVo> page = new Page<>(adminRoleDto.getPageNum(), adminRoleDto.getPageSize());
        RoleEntity roleEntity = new RoleEntity();
        if(StrUtil.isNotEmpty(adminRoleDto.getRoleName())){
            roleEntity.setRoleName(adminRoleDto.getRoleName());
        }
        IPage<AdminRoleVo> list = this.baseMapper.selectAdminRoleVoInPage(page,roleEntity);
        return Result.ok(list);
    }

    @Override
    @Transactional
    public Result addRole(AdminAddRoleDto adminAddRoleDto) {
        String roleName = adminAddRoleDto.getRoleName();
        if(StrUtil.isEmpty(roleName)){
            return Result.fail("请输入角色名称");
        }
        String menuIds = adminAddRoleDto.getMenuIds();
        if(StrUtil.isEmpty(menuIds)){
            return Result.fail("请选择角色权限");
        }
        RoleEntity roleEntity = new RoleEntity();
        String remark = adminAddRoleDto.getRemark();
        if(StrUtil.isNotEmpty(remark)){
            roleEntity.setRemark(remark);
        }
        roleEntity.setRoleName(roleName);
        int insert = this.baseMapper.insert(roleEntity);
        if(insert > 0){
            saveRoleMenus(menuIds,roleEntity.getId());
            return Result.ok("添加成功");
        }
        return Result.fail("添加失败");
    }

    @Override
    @Transactional
    public Result deleteRole(Long id) {
        RoleEntity roleEntity = this.baseMapper.selectById(id);
        if(ObjectUtil.isEmpty(roleEntity)){
            return Result.fail("角色不存在");
        }
        //获取角色下对应的用户信息
        QueryWrapper<UserRoleEntity> objectQueryWrapper = new QueryWrapper<>();
        objectQueryWrapper.eq("role_id",id);
        List<UserRoleEntity> userRoleEntities = userRoleMapper.selectList(objectQueryWrapper);
        if(CollUtil.isNotEmpty(userRoleEntities)){
            return Result.fail("当前角色下还有用户，请重新分配角色");
        }
        this.baseMapper.deleteById(id);

        QueryWrapper<RoleMenuEntity> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("role_id",id);
        roleMenuMapper.delete(queryWrapper);
        return Result.ok("删除成功");
    }

    @Override
    public Result seeRoleInfo(Long id) {
        RoleEntity roleEntity = this.baseMapper.selectById(id);
        if(ObjectUtil.isEmpty(roleEntity)){
            return Result.fail("角色不存在");
        }
        AdminSeeRoleInfoVo adminSeeRoleInfoVo = new AdminSeeRoleInfoVo();
        adminSeeRoleInfoVo.setId(roleEntity.getId());
        adminSeeRoleInfoVo.setRoleName(roleEntity.getRoleName());
        adminSeeRoleInfoVo.setRemark(roleEntity.getRemark());
        List<RoleMenuEntity> roleMenuEntities = roleMenuMapper.selectListByRoleId(id);
        if(CollUtil.isNotEmpty(roleMenuEntities)){
            List<Long> menuIds = new ArrayList<>();
            for(RoleMenuEntity roleMenuEntity : roleMenuEntities){
                MenuEntity menuEntity = menuMapper.selectMenuEntityByIdAndParentId(roleMenuEntity.getMenuId(),MenuEntity.PARENTID_DEFAULT);
                if(ObjectUtil.isNotEmpty(menuEntity)){
                    menuIds.add(menuEntity.getId());
                }
            }
            adminSeeRoleInfoVo.setMenuIds(menuIds);
        }
        return Result.ok(adminSeeRoleInfoVo);
    }

    @Override
    @Transactional
    public Result updateRole(AdminUpdateRoleDto adminUpdateRoleDto) {
        Long id = adminUpdateRoleDto.getId();
        RoleEntity roleEntity = this.baseMapper.selectById(id);
        if(ObjectUtil.isEmpty(roleEntity)){
            return Result.fail("角色不存在");
        }
        String roleName = adminUpdateRoleDto.getRoleName();
        if(StrUtil.isEmpty(roleName)){
            return Result.fail("请输入角色名称");
        }
        roleEntity.setRoleName(roleName);
        String remark = adminUpdateRoleDto.getRemark();
        if(StrUtil.isNotEmpty(remark)){
            roleEntity.setRemark(remark);
        }
        this.baseMapper.updateById(roleEntity);
        QueryWrapper<RoleMenuEntity> objectQueryWrapper = new QueryWrapper<>();
        objectQueryWrapper.eq("role_id",id);
        roleMenuMapper.delete(objectQueryWrapper);
        String menuIds = adminUpdateRoleDto.getMenuIds();
        if(StrUtil.isNotEmpty(menuIds)){
            saveRoleMenus(menuIds,id);
        }
        return Result.ok("更新成功");
    }

    @Override
    @Transactional
    public Result delObjs(AdminDeleteDto adminDeleteDto) {
        String ids = adminDeleteDto.getIds();
        if(StrUtil.isNotEmpty(ids)){
            String[] roleIds = ids.split(StringPool.COMMA);
            for(String roleIdStr : roleIds){
                Long roleId = Long.valueOf(roleIdStr);

                QueryWrapper<UserRoleEntity> objectQueryWrapper = new QueryWrapper<>();
                objectQueryWrapper.eq("role_id",roleId);
                userRoleMapper.delete(objectQueryWrapper);

                QueryWrapper<RoleMenuEntity> queryWrapper = new QueryWrapper<>();
                queryWrapper.eq("role_id",roleId);
                roleMenuMapper.delete(queryWrapper);

                this.baseMapper.deleteById(roleId);
            }
        }
        return Result.ok("删除成功");
    }

    private void saveRoleMenus(String menuIds,Long roleId) {
        if (StrUtil.isNotEmpty(menuIds)) {
            String[] menuIdList = menuIds.split(StringPool.COMMA);
            Arrays.stream(menuIdList).forEach(menuId -> {
                RoleMenuEntity roleMenu = new RoleMenuEntity();
                roleMenu.setMenuId(Long.valueOf(menuId));
                roleMenu.setRoleId(roleId);
                roleMenuMapper.insert(roleMenu);
            });
        }
    }

}