/**
* Return the reward in JSON format.
*
* @return the reward in JSON format
*/
public function toJson()
{
$response = array();
if (count($this->getBadges()) > 0) {
$response["badges"] = Badge::getValues($this->getBadges());
} else {
$response["badges"] = array();
}
$response["koin_count_new"] = $this->getKoinCountNew();
$response["koin_count_total"] = $this->getKoinCountTotal();
return json_encode($response);
}