package com.teaching.backend.service.favour;

import com.baomidou.mybatisplus.extension.service.IService;
import com.teaching.backend.model.entity.favour.SeCourseFavour;

import java.util.List;

/**
 * @Author:youhang
 * @Date:2024-05-30-20:22
 * @Description:
 */
public interface SeCourseFavourService extends IService<SeCourseFavour> {

    /**
     * 收藏/取消收藏
     *
     * @param courseId
     * @param userId
     * @return
     */
    boolean doCourseFavour(String courseId, String userId);


    /**
     * 收藏总数
     *
     * @param courseId
     * @return
     */
    long favourCount(String courseId);


    /**
     * 课程下资源和知识点的收藏总数
     *
     * @param courseId
     * @return
     */
    long courseCount(String courseId);


    /**
     * 某个用户课程列表
     *
     * @param userId
     * @return
     */
    List<String> courseList(String userId);

}