public TransferNotificationRecord(UInt160 asset, UInt160 from, UInt160 to, BigInteger amount, ReadOnlyMemory <byte> tokenId, NotificationRecord notification)
{
Asset = asset;
From = from;
To = to;
TokenId = tokenId;
Amount = amount;
Notification = notification;
}
public static TransferNotificationRecord?Create(NotificationRecord notification)
{
if (notification.State.Count < 3)
{
return(null);
}
var from = ParseAddress(notification.State[0]);
if (from == null)
{
return(null);
}
var to = ParseAddress(notification.State[1]);
if (to == null)
{
return(null);
}
if (from == UInt160.Zero && to == UInt160.Zero)
{
return(null);
}
var amountItem = notification.State[2];
if (amountItem is not ByteString && amountItem is not Integer)
{
return(null);
}
var amount = amountItem.GetInteger();
var asset = notification.ScriptHash;
return(notification.State.Count switch
{
3 => new TransferNotificationRecord(asset, from, to, amount, default, notification),