discourse/app/jobs/regular/notify_moved_posts.rb

# frozen_string_literal: true

module Jobs
  class NotifyMovedPosts < ::Jobs::Base
    def execute(args)
      raise Discourse::InvalidParameters.new(:post_ids) if args[:post_ids].blank?
      raise Discourse::InvalidParameters.new(:moved_by_id) if args[:moved_by_id].blank?

      # Make sure we don't notify the same user twice (in case multiple posts were moved at once.)
      users_notified = Set.new
      posts =
        Post
          .where(id: args[:post_ids])
          .where("user_id <> ?", args[:moved_by_id])
          .includes(:user, :topic)
      if posts.present?
        moved_by = User.find_by(id: args[:moved_by_id])

        posts.each do |p|
          if users_notified.exclude?(p.user_id)
            p.user.notifications.create(
              notification_type: Notification.types[:moved_post],
              topic_id: p.topic_id,
              post_number: p.post_number,
              data: { topic_title: p.topic.title, display_username: moved_by.username }.to_json,
            )
            users_notified << p.user_id
          end
        end
      end
    end
  end
end