package com.teaching.backend.service.courses;

import com.baomidou.mybatisplus.extension.service.IService;
import com.teaching.backend.model.dto.courses.CourseObjectivesDTO;
import com.teaching.backend.model.entity.courses.CourseObjectives;
import com.teaching.backend.model.vo.courses.CourseObjectivesTreeVO;
import com.teaching.backend.model.vo.courses.CourseObjectivesVO;

import java.util.List;

/**
 * <p>
 *  服务类
 * </p>
 *
 * @author zjh
 * @since 2024-05-31
 */
public interface ICourseObjectivesService extends IService<CourseObjectives> {

    /**
     * 添加课程目标
     * @param courseObjectivesDTO
     * @return
     */
    String addObjectives(CourseObjectivesDTO courseObjectivesDTO);

    /**
     * 删除课程目标
     * @param id
     * @return
     */
    String deleteObjectives(String id);

    /**
     * 查询课程目标以及相关内容
     * @param id
     * @return
     */
    List<CourseObjectivesTreeVO> queryCourseObjectivesTree(String id);

    List<CourseObjectivesVO> queryCourseObjectivesForAdd(String courseId);
}