CommentsResponse.kt

@Keep
data class CommentsResponse(
    @SerializedName("comments") private val commentsResponse: List<CommentResponse>) {

    fun toComments() = commentsResponse.map { it.toComment() }

    fun findChildren(cid: String): List<Comment> {
        val comments = toComments()
        val groups = comments
            .sortedWith(compareBy({ it.parentid }, { it.comid }))
            .groupBy { it.parentid }
        return groups[comid] ?: emptyList()
    }

    @Keep
    data class CommentResponse(
        @SerializedName("comment_id") private val comid: String,
        @SerializedName("post_id") private val postid: String,
        @SerializedName("parent_id") private val parentid: String?,
    ){
        fun toComment() = Comment( comid, postid, parentid, children?? )

    }

}



data class Comment(
    val comid: String,
    val postid: String,
    val parentid: String,
    val children: List<Comment>)