Method storeCouponCount

public static function storeCouponCount($couponId)
{
    $idExists = 0;
    if ((int) $couponId > 0) {
        $db = Factory::getDBO();
        $query = ' SELECT id FROM #__phocacart_coupon_count WHERE coupon_id = ' . (int) $couponId . ' ORDER BY id LIMIT 1';
        $db->setQuery($query);
        $idExists = $db->loadResult();
        if ((int) $idExists > 0) {
            $query = 'UPDATE #__phocacart_coupon_count SET count = count + 1 WHERE id = ' . (int) $idExists;
            $db->setQuery($query);
            $db->execute();
        } else {
            $valuesString = '(' . (int) $couponId . ', 1)';
            $query = ' INSERT INTO #__phocacart_coupon_count (coupon_id, count) VALUES ' . (string) $valuesString;
            $db->setQuery($query);
            $db->execute();
        }
        return true;
    }
    return false;
}