package com.ruoyi.system.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.common.basic.PageInfo;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.system.mapper.TMajorMapper;
import com.ruoyi.system.model.TMajor;
import com.ruoyi.system.query.TMajorQuery;
import com.ruoyi.system.service.TMajorService;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * <p>
 * 专业管理 服务实现类
 * </p>
 *
 * @author xiaochen
 * @since 2025-09-28
 */
@Service
public class TMajorServiceImpl extends ServiceImpl<TMajorMapper, TMajor> implements TMajorService {

    @Override
    public PageInfo<TMajor> pageList(TMajorQuery query) {
        PageInfo<TMajor> pageInfo = new PageInfo<>(query.getPageNum(), query.getPageSize());
        List<TMajor> list = this.baseMapper.pageList(query,pageInfo);
        pageInfo.setRecords(list);
        return pageInfo;
    }

    @Override
    public boolean isExit(TMajor dto) {
        if(StringUtils.isNotEmpty(dto.getId())){
            // 修改
            return this.count(Wrappers.lambdaQuery(TMajor.class).ne(TMajor::getId, dto.getId()).eq(TMajor::getMajorName, dto.getMajorName())) > 0;
        }else {
            // 新增
            return this.count(Wrappers.lambdaQuery(TMajor.class).eq(TMajor::getMajorName, dto.getMajorName())) > 0;
        }
    }
}