package com.emotionmuseum.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.emotionmuseum.entity.Comment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * 评论Mapper接口
 * 
 * @author emotion-museum
 * @version 1.0.0
 * @since 2024-01-01
 */
@Mapper
public interface CommentMapper extends BaseMapper<Comment> {

    /**
     * 分页查询内容的评论
     */
    @Select("SELECT * FROM comment WHERE content_type = #{contentType} AND content_id = #{contentId} AND parent_id IS NULL AND deleted = 0 ORDER BY create_time DESC")
    IPage<Comment> selectContentComments(Page<Comment> page, @Param("contentType") String contentType, @Param("contentId") String contentId);

    /**
     * 查询评论的回复
     */
    @Select("SELECT * FROM comment WHERE parent_id = #{parentId} AND deleted = 0 ORDER BY create_time ASC")
    List<Comment> selectCommentReplies(@Param("parentId") String parentId);

    /**
     * 统计内容的评论数量
     */
    @Select("SELECT COUNT(*) FROM comment WHERE content_type = #{contentType} AND content_id = #{contentId} AND deleted = 0")
    int countByContent(@Param("contentType") String contentType, @Param("contentId") String contentId);

    /**
     * 统计用户的评论数量
     */
    @Select("SELECT COUNT(*) FROM comment WHERE user_id = #{userId} AND deleted = 0")
    int countByUserId(@Param("userId") String userId);

    /**
     * 查询用户的最新评论
     */
    @Select("SELECT * FROM comment WHERE user_id = #{userId} AND deleted = 0 ORDER BY create_time DESC LIMIT #{limit}")
    List<Comment> selectUserLatestComments(@Param("userId") String userId, @Param("limit") int limit);
}