/*
Copyright [2020] [https://www.xiaonuo.vip]

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Snowy采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：

1.请不要删除和修改根目录下的LICENSE文件。
2.请不要删除和修改Snowy源码头部的版权声明。
3.请保留源码和相关描述文件的项目出处，作者声明等。
4.分发源码时候，请注明软件出处 https://gitee.com/xiaonuobase/snowy
5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/xiaonuobase/snowy
6.若您的项目无法满足以上几点，可申请商业授权，获取Snowy商业授权许可，请在官网购买授权，地址为 https://www.xiaonuo.vip
 */
package vip.xiaonuo.sys.modular.dict.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.lang.Dict;
import cn.hutool.core.util.ObjectUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import vip.xiaonuo.core.enums.CommonStatusEnum;
import vip.xiaonuo.core.exception.ServiceException;
import vip.xiaonuo.core.exception.enums.StatusExceptionEnum;
import vip.xiaonuo.core.factory.PageFactory;
import vip.xiaonuo.core.factory.TreeBuildFactory;
import vip.xiaonuo.core.pojo.page.PageResult;
import vip.xiaonuo.sys.modular.dict.entity.SysDictData;
import vip.xiaonuo.sys.modular.dict.entity.SysDictType;
import vip.xiaonuo.sys.modular.dict.enums.SysDictTypeExceptionEnum;
import vip.xiaonuo.sys.modular.dict.mapper.SysDictTypeMapper;
import vip.xiaonuo.sys.modular.dict.param.SysDictTypeParam;
import vip.xiaonuo.sys.modular.dict.result.SysDictTreeNode;
import vip.xiaonuo.sys.modular.dict.service.SysDictDataService;
import vip.xiaonuo.sys.modular.dict.service.SysDictTypeService;

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

/**
 * 系统字典类型service接口实现类
 *
 * @author xuyuxiang，xuyuxiang
 * @date 2020/3/13 16:11
 */
@Service
public class SysDictTypeServiceImpl extends ServiceImpl<SysDictTypeMapper, SysDictType> implements SysDictTypeService {

    @Resource
    private SysDictDataService sysDictDataService;

    @Override
    public PageResult<SysDictType> page(SysDictTypeParam sysDictTypeParam) {

        //构造条件
        LambdaQueryWrapper<SysDictType> queryWrapper = new LambdaQueryWrapper<>();

        if (ObjectUtil.isNotNull(sysDictTypeParam)) {
            //根据字典类型名称模糊查询
            if (ObjectUtil.isNotEmpty(sysDictTypeParam.getName())) {
                queryWrapper.like(SysDictType::getName, sysDictTypeParam.getName());
            }

            //根据字典类型编码模糊查询
            if (ObjectUtil.isNotEmpty(sysDictTypeParam.getCode())) {
                queryWrapper.like(SysDictType::getCode, sysDictTypeParam.getCode());
            }
        }

        //查询未删除的
        queryWrapper.ne(SysDictType::getStatus, CommonStatusEnum.DELETED.getCode());
        //根据排序升序排列，序号越小越在前
        queryWrapper.orderByAsc(SysDictType::getSort);
        //查询分页结果
        return new PageResult<>(this.page(PageFactory.defaultPage(), queryWrapper));
    }

    @Override
    public List<SysDictType> list(SysDictTypeParam sysDictTypeParam) {

        //构造条件
        LambdaQueryWrapper<SysDictType> queryWrapper = new LambdaQueryWrapper<>();

        //查询未删除的
        queryWrapper.ne(SysDictType::getStatus, CommonStatusEnum.DELETED.getCode());

        return this.list(queryWrapper);
    }

    @Override
    public List<Dict> dropDown(SysDictTypeParam sysDictTypeParam) {
        LambdaQueryWrapper<SysDictType> queryWrapper = new LambdaQueryWrapper<SysDictType>()
                .eq(SysDictType::getCode, sysDictTypeParam.getCode());

        SysDictType sysDictType = this.getOne(queryWrapper);
        if (ObjectUtil.isNull(sysDictType)) {
            throw new ServiceException(SysDictTypeExceptionEnum.DICT_TYPE_NOT_EXIST);
        }
        return sysDictDataService.getDictDataListByDictTypeId(sysDictType.getId());
    }

    @Override
    public void add(SysDictTypeParam sysDictTypeParam) {

        //校验参数，检查是否存在重复的编码或者名称，不排除当前添加的这条记录
        checkParam(sysDictTypeParam, false);

        //将dto转为实体
        SysDictType sysDictType = new SysDictType();
        BeanUtil.copyProperties(sysDictTypeParam, sysDictType);

        //设置状态为启用
        sysDictType.setStatus(CommonStatusEnum.ENABLE.getCode());

        this.save(sysDictType);
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void delete(SysDictTypeParam sysDictTypeParam) {

        //根据id查询实体
        SysDictType sysDictType = this.querySysDictType(sysDictTypeParam);

        //逻辑删除，修改状态
        sysDictType.setStatus(CommonStatusEnum.DELETED.getCode());

        //更新实体
        this.updateById(sysDictType);

        //级联删除字典值
        sysDictDataService.deleteByTypeId(sysDictType.getId());
    }

    @Override
    public void edit(SysDictTypeParam sysDictTypeParam) {

        //根据id查询实体
        SysDictType sysDictType = this.querySysDictType(sysDictTypeParam);

        //校验参数，检查是否存在重复的编码或者名称，排除当前编辑的这条记录
        checkParam(sysDictTypeParam, true);

        //请求参数转化为实体
        BeanUtil.copyProperties(sysDictTypeParam, sysDictType);

        //不能修改状态，用修改状态接口修改状态
        sysDictType.setStatus(null);

        this.updateById(sysDictType);
    }

    @Override
    public SysDictType detail(SysDictTypeParam sysDictTypeParam) {
        return this.querySysDictType(sysDictTypeParam);
    }

    @Override
    public void changeStatus(SysDictTypeParam sysDictTypeParam) {
        Long id = sysDictTypeParam.getId();
        Integer status = sysDictTypeParam.getStatus();

        //校验状态在不在枚举值里
        CommonStatusEnum.validateStatus(status);

        //更新枚举，更新只能更新未删除状态的
        LambdaUpdateWrapper<SysDictType> updateWrapper = new LambdaUpdateWrapper<>();
        updateWrapper.eq(SysDictType::getId, id)
                .and(i -> i.ne(SysDictType::getStatus, CommonStatusEnum.DELETED.getCode()))
                .set(SysDictType::getStatus, status);
        boolean update = this.update(updateWrapper);
        if (!update) {
            throw new ServiceException(StatusExceptionEnum.UPDATE_STATUS_ERROR);
        }
    }

    @Override
    public List<SysDictTreeNode> tree() {
        List<SysDictTreeNode> resultList = CollectionUtil.newArrayList();
        LambdaQueryWrapper<SysDictType> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.ne(SysDictType::getStatus, CommonStatusEnum.DELETED.getCode());
        this.list(queryWrapper).forEach(sysDictType -> {
            SysDictTreeNode sysDictTreeNode = new SysDictTreeNode();
            BeanUtil.copyProperties(sysDictType, sysDictTreeNode);
            sysDictTreeNode.setPid(0L);
            resultList.add(sysDictTreeNode);
        });
        sysDictDataService.list(new LambdaQueryWrapper<SysDictData>().ne(SysDictData::getStatus, CommonStatusEnum.DELETED.getCode()))
                .forEach(sysDictData -> {
                    SysDictTreeNode sysDictTreeNode = new SysDictTreeNode();
                    sysDictTreeNode.setId(sysDictData.getId());
                    sysDictTreeNode.setPid(sysDictData.getTypeId());
                    sysDictTreeNode.setCode(sysDictData.getCode());
                    sysDictTreeNode.setName(sysDictData.getValue());
                    resultList.add(sysDictTreeNode);
                });
        return new TreeBuildFactory<SysDictTreeNode>().doTreeBuild(resultList);
    }

    /**
     * 校验参数，检查是否存在重复的编码或者名称
     *
     * @author xuyuxiang，xuyuxiang
     * @date 2020/3/25 21:23
     */
    private void checkParam(SysDictTypeParam sysDictTypeParam, boolean isExcludeSelf) {
        Long id = sysDictTypeParam.getId();
        String name = sysDictTypeParam.getName();
        String code = sysDictTypeParam.getCode();

        //构建带name和code的查询条件
        LambdaQueryWrapper<SysDictType> queryWrapperByName = new LambdaQueryWrapper<>();
        queryWrapperByName.eq(SysDictType::getName, name)
                .ne(SysDictType::getStatus, CommonStatusEnum.DELETED.getCode());

        LambdaQueryWrapper<SysDictType> queryWrapperByCode = new LambdaQueryWrapper<>();
        queryWrapperByCode.eq(SysDictType::getCode, code)
                .ne(SysDictType::getStatus, CommonStatusEnum.DELETED.getCode());

        //如果排除自己，则增加查询条件主键id不等于本条id
        if (isExcludeSelf) {
            queryWrapperByName.ne(SysDictType::getId, id);
            queryWrapperByCode.ne(SysDictType::getId, id);
        }

        //查询重复记录的数量
        int countByName = this.count(queryWrapperByName);
        int countByCode = this.count(queryWrapperByCode);

        //如果存在重复的记录，抛出异常，直接返回前端
        if (countByName >= 1) {
            throw new ServiceException(SysDictTypeExceptionEnum.DICT_TYPE_NAME_REPEAT);
        }
        if (countByCode >= 1) {
            throw new ServiceException(SysDictTypeExceptionEnum.DICT_TYPE_CODE_REPEAT);
        }
    }

    /**
     * 获取系统字典类型
     *
     * @author xuyuxiang，xuyuxiang
     * @date 2020/3/31 20:38
     */
    private SysDictType querySysDictType(SysDictTypeParam sysDictTypeParam) {
        SysDictType sysDictType = this.getById(sysDictTypeParam.getId());
        if (ObjectUtil.isNull(sysDictType)) {
            throw new ServiceException(SysDictTypeExceptionEnum.DICT_TYPE_NOT_EXIST);
        }
        return sysDictType;
    }
}