alien_cloud/alien-entity/src/main/resources/mapper/CommentReplyMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="shop.alien.mapper.CommentReplyMapper">

    <!-- 回复列表查询结果映射 -->
    <resultMap id="CommentReplyVoResultMap" type="shop.alien.entity.store.vo.CommentReplyVo">
        <id column="id" property="id" />
        <result column="comment_id" property="commentId" />
        <result column="user_id" property="userId" />
        <result column="user_name" property="userName" />
        <result column="user_avatar" property="userAvatar" />
        <result column="reply_to_user_id" property="replyToUserId" />
        <result column="reply_to_user_name" property="replyToUserName" />
        <result column="parent_reply_id" property="parentReplyId" />
        <result column="reply_content" property="replyContent" />
        <result column="like_count" property="likeCount" />
        <result column="is_liked" property="isLiked" />
        <result column="reply_count" property="replyCount" />
        <result column="created_time" property="createdTime" />
    </resultMap>

    <!-- 根据评论ID查询回复列表（包含用户信息） -->
    <select id="getReplyListByCommentId" resultMap="CommentReplyVoResultMap">
        SELECT
            cr.id,
            cr.comment_id,
            cr.user_id,
            lu.user_name AS user_name,
            lu.user_image AS user_avatar,
            cr.reply_to_user_id,
            lu2.user_name AS reply_to_user_name,
            cr.parent_reply_id,
            cr.reply_content,
            cr.like_count,
            CASE 
                WHEN #{currentUserId} IS NOT NULL AND llr.id IS NOT NULL THEN 1
                ELSE 0
            END AS is_liked,
            (SELECT COUNT(*) FROM comment_reply cr2 
             WHERE cr2.parent_reply_id = cr.id AND cr2.delete_flag = 0) AS reply_count,
            cr.created_time
        FROM comment_reply cr
        LEFT JOIN life_user lu ON lu.id = cr.user_id AND lu.delete_flag = 0
        LEFT JOIN life_user lu2 ON lu2.id = cr.reply_to_user_id AND lu2.delete_flag = 0
        LEFT JOIN life_like_record llr ON CONVERT(llr.huifu_id, CHAR) = CONVERT(cr.id, CHAR)
            AND llr.type = '9' 
            AND CONVERT(llr.dianzan_id, CHAR) = CONVERT(#{currentUserId}, CHAR)
            AND llr.delete_flag = 0
        WHERE cr.delete_flag = 0
        AND cr.comment_id = #{commentId}
        AND cr.parent_reply_id = 0
        ORDER BY cr.created_time ASC
    </select>

    <!-- 根据父回复ID查询子回复列表（包含用户信息） -->
    <select id="getChildReplyListByParentId" resultMap="CommentReplyVoResultMap">
        SELECT
            cr.id,
            cr.comment_id,
            cr.user_id,
            lu.user_name AS user_name,
            lu.user_image AS user_avatar,
            cr.reply_to_user_id,
            lu2.user_name AS reply_to_user_name,
            cr.parent_reply_id,
            cr.reply_content,
            cr.like_count,
            CASE 
                WHEN #{currentUserId} IS NOT NULL AND llr.id IS NOT NULL THEN 1
                ELSE 0
            END AS is_liked,
            0 AS reply_count,
            cr.created_time
        FROM comment_reply cr
        LEFT JOIN life_user lu ON lu.id = cr.user_id AND lu.delete_flag = 0
        LEFT JOIN life_user lu2 ON lu2.id = cr.reply_to_user_id AND lu2.delete_flag = 0
        LEFT JOIN life_like_record llr ON CONVERT(llr.huifu_id, CHAR) = CONVERT(cr.id, CHAR)
            AND llr.type = '9' 
            AND CONVERT(llr.dianzan_id, CHAR) = CONVERT(#{currentUserId}, CHAR)
            AND llr.delete_flag = 0
        WHERE cr.delete_flag = 0
        AND cr.parent_reply_id = #{parentReplyId}
        ORDER BY cr.created_time ASC
    </select>

    <!-- 根据评论ID查询回复数量 -->
    <select id="getReplyCountByCommentId" resultType="java.lang.Integer">
        SELECT COUNT(*)
        FROM comment_reply
        WHERE delete_flag = 0
        AND comment_id = #{commentId}
    </select>

    <!-- 根据评论ID删除所有回复（逻辑删除） -->
    <update id="deleteRepliesByCommentId">
        UPDATE comment_reply
        SET delete_flag = 1,
            updated_time = NOW()
        WHERE delete_flag = 0
        AND comment_id = #{commentId}
    </update>

</mapper>