api/src/main/java/com/xjrsoft/module/base/service/impl/BaseSemesterServiceImpl.java

package com.xjrsoft.module.base.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xjrsoft.common.enums.DeleteMark;
import com.xjrsoft.module.base.entity.BaseSemester;
import com.xjrsoft.module.base.mapper.BaseSemesterMapper;
import com.xjrsoft.module.base.service.IBaseSemesterService;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.util.List;

/**
 * <p>
 * 学期表 服务实现类
 * </p>
 *
 * @author baomidou
 * @since 2023-09-02 04:52:58
 */
@Service
public class BaseSemesterServiceImpl extends ServiceImpl<BaseSemesterMapper, BaseSemester> implements IBaseSemesterService {

    @Override
    public BaseSemester getCurrentSemester() {
        LocalDate now = LocalDate.now();
        List<BaseSemester> semesterList = this.list(
                new QueryWrapper<BaseSemester>().lambda()
                        .eq(BaseSemester::getDeleteMark, DeleteMark.NODELETE.getCode())
                        .le(BaseSemester::getStartDate, now)
                        .ge(BaseSemester::getEndDate, now)
                        .orderByDesc(BaseSemester::getStartDate)
        );
        if (semesterList.isEmpty()) {
            return null;
        }
        BaseSemester baseSemester = semesterList.get(0);
        return baseSemester;
    }


    @Override
    public Long getLastSemester() {
        List<BaseSemester> semesterList = this.list(
                new QueryWrapper<BaseSemester>().lambda()
                        .eq(BaseSemester::getDeleteMark, DeleteMark.NODELETE.getCode())
                        .orderByDesc(BaseSemester::getStartDate)
        );
        if (semesterList.isEmpty()) {
            return null;
        }
        BaseSemester baseSemester = semesterList.get(0);
        return baseSemester.getId();
    }
}