package mqtt

import (
	"github.com/daglabs/btcd/apiserver/controllers"
)

const selectedTipTopic = "dag/selected-tip"

// PublishSelectedTipNotification publishes notification for a new selected tip
func PublishSelectedTipNotification(selectedTipHash string) error {
	if !isConnected() {
		return nil
	}
	block, err := controllers.GetBlockByHashHandler(selectedTipHash)
	if err != nil {
		return err
	}
	return publish(selectedTipTopic, block)
}