package com.gkhy.exam.system.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.gkhy.exam.common.api.CommonPage;
import com.gkhy.exam.common.constant.UserConstant;
import com.gkhy.exam.common.domain.entity.SysDictData;
import com.gkhy.exam.common.exception.ApiException;
import com.gkhy.exam.common.utils.DictUtils;
import com.gkhy.exam.common.utils.PageUtils;
import com.gkhy.exam.common.utils.SecurityUtils;
import com.gkhy.exam.system.mapper.SysDictDataMapper;
import com.gkhy.exam.system.service.SysDictDataService;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * <p>
 * 字典数据表 服务实现类
 * </p>
 *
 * @author kzy
 * @since 2023-11-01 15:37:51
 */
@Service
public class SysDictDataServiceImpl extends ServiceImpl<SysDictDataMapper, SysDictData> implements SysDictDataService {

    @Override
    public CommonPage<SysDictData> selectDictDataList(SysDictData dictData) {
        PageUtils.startPage();
        List<SysDictData> dictDataList = baseMapper.selectDictDataList(dictData);
        return CommonPage.restPage(dictDataList);
    }

    @Override
    public String selectDictLabel(String dictType, String dictValue) {
        return baseMapper.selectDictLabel(dictType,dictValue);
    }

    @Override
    public SysDictData selectDictDataById(Long dictId) {
        return getById(dictId);
    }

    @Override
    public void deleteDictDataByIds(Long[] dictIds) {
        for (Long dictId : dictIds)
        {
            SysDictData data = selectDictDataById(dictId);
            baseMapper.deleteById(dictId);
            List<SysDictData> dictDatas = baseMapper.selectDictDataByType(data.getDictType());
            DictUtils.setDictCache(data.getDictType(), dictDatas);
        }
    }

    @Override
    public int insertDictData(SysDictData dictData) {
        if(!checkDictDataUnique(dictData)){
            throw new ApiException("已存在相同字典数据");
        }
        dictData.setCreateBy(SecurityUtils.getUsername());
        int row = baseMapper.insert(dictData);
        if (row > 0)
        {
            List<SysDictData> dictDatas = baseMapper.selectDictDataByType(dictData.getDictType());
            DictUtils.setDictCache(dictData.getDictType(), dictDatas);
        }
        return row;
    }

    @Override
    public int updateDictData(SysDictData dictData) {
        if(!checkDictDataUnique(dictData)){
            throw new ApiException("已存在相同字典数据");
        }
        dictData.setUpdateBy(SecurityUtils.getUsername());
        int row = baseMapper.updateById(dictData);
        if (row > 0)
        {
            List<SysDictData> dictDatas = baseMapper.selectDictDataByType(dictData.getDictType());
            DictUtils.setDictCache(dictData.getDictType(), dictDatas);
        }
        return row;
    }

    public boolean checkDictDataUnique(SysDictData dictData) {
        LambdaQueryWrapper<SysDictData> lambdaQueryWrapper = Wrappers.<SysDictData>lambdaQuery()
                .eq(SysDictData::getDictType, dictData.getDictType())
                .eq(SysDictData::getLabel, dictData.getLabel());
        if(dictData.getId()!=null){
            lambdaQueryWrapper.ne(SysDictData::getId,dictData.getId());
        }
        long existCount= count(lambdaQueryWrapper);
        if(existCount>0){
            return UserConstant.NOT_UNIQUE;
        }
        return UserConstant.UNIQUE;
    }
}