discourse/app/jobs/regular/delete_replies.rb

# frozen_string_literal: true

module Jobs
  class DeleteReplies < ::Jobs::TopicTimerBase
    def execute_timer_action(topic_timer, topic)
      unless Guardian.new(topic_timer.user).is_staff?
        topic_timer.trash!(Discourse.system_user)
        return
      end

      replies = topic.posts.where("posts.post_number > 1")
      replies = replies.where("like_count < ?", SiteSetting.skip_auto_delete_reply_likes) if SiteSetting.skip_auto_delete_reply_likes > 0

      replies.where('posts.created_at < ?', topic_timer.duration_minutes.minutes.ago).each do |post|
        PostDestroyer.new(topic_timer.user, post, context: I18n.t("topic_statuses.auto_deleted_by_timer")).destroy
      end

      topic_timer.execute_at = (replies.minimum(:created_at) || Time.zone.now) + topic_timer.duration_minutes.minutes
      topic_timer.save
    end

  end
end