package com.gkhy.exam.system.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.gkhy.exam.system.domain.ExCourseChapterPeriod;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import java.util.List;

/**
 * <p>
 * 课时信息表 Mapper 接口
 * </p>
 *
 * @author kzy
 * @since 2024-06-05 15:07:36
 */
@Mapper
public interface ExCourseChapterPeriodMapper extends BaseMapper<ExCourseChapterPeriod> {

    /**
     * 根据id查询课时信息
     * @param periodId
     * @return
     */
    ExCourseChapterPeriod selectPeriodById(Long periodId);

    /**
     * 校验课时名称是否唯一
     * @param name
     * @param chapterId
     * @param courseId
     * @return
     */
    ExCourseChapterPeriod checkNameUnique(@Param("name") String name, @Param("chapterId")Long chapterId, @Param("courseId")Long courseId);

    /**
     * 根据章节id查找课时
     * @param chapterId
     * @return
     */
    List<ExCourseChapterPeriod> selectPeriodByChapterId(Long chapterId);

    /**
     * 根据章节id删除课时
     * @param chapterId
     * @return
     */
    int deletePeriodByChapterId(Long chapterId);
}