public BroadcastTransactionViewModel(
BitcoinStore store,
Network network,
TransactionBroadcaster broadcaster,
SmartTransaction transaction)
{
Title = "Broadcast Transaction";
var nullMoney = new Money(-1L);
var nullOutput = new TxOut(nullMoney, Script.Empty);
var psbt = PSBT.FromTransaction(transaction.Transaction, network);
TxOut GetOutput(OutPoint outpoint) =>
store.TransactionStore.TryGetTransaction(outpoint.Hash, out var prevTxn)
? prevTxn.Transaction.Outputs[outpoint.N]
: nullOutput;
var inputAddressAmount = psbt.Inputs
.Select(x => x.PrevOut)
.Select(GetOutput)
.ToArray();
var outputAddressAmount = psbt.Outputs
.Select(x => x.GetCoin().TxOut)
.ToArray();
var psbtTxn = psbt.GetOriginalTransaction();
_transactionId = psbtTxn.GetHash().ToString();
_inputCount = inputAddressAmount.Length;
_inputCountString = $" input{TextHelpers.AddSIfPlural(_inputCount)} and ";
_outputCount = outputAddressAmount.Length;
_outputCountString = $" output{TextHelpers.AddSIfPlural(_outputCount)}.";
_totalInputValue = inputAddressAmount.Any(x => x.Value == nullMoney)
? null
: inputAddressAmount.Select(x => x.Value).Sum();
_totalOutputValue = outputAddressAmount.Any(x => x.Value == nullMoney)
? null
: outputAddressAmount.Select(x => x.Value).Sum();
_networkFee = TotalInputValue is null || TotalOutputValue is null
? null
: TotalInputValue - TotalOutputValue;
EnableCancel = true;
EnableBack = false;
this.WhenAnyValue(x => x.IsBusy)
.Subscribe(x => EnableCancel = !x);
var nextCommandCanExecute = this.WhenAnyValue(x => x.IsBusy)
.Select(x => !x);
NextCommand = ReactiveCommand.CreateFromTask(
async() => await OnNext(broadcaster, transaction),
nextCommandCanExecute);
EnableAutoBusyOn(NextCommand);
}
public BroadcastTransactionViewModel(
BitcoinStore store,
Network network,
TransactionBroadcaster broadcaster,
SmartTransaction transaction)
{
Title = "Broadcast Transaction";
var nullMoney = new Money(-1L);
var nullOutput = new TxOut(nullMoney, Script.Empty);
var psbt = PSBT.FromTransaction(transaction.Transaction, network);
TxOut GetOutput(OutPoint outpoint) =>
store.TransactionStore.TryGetTransaction(outpoint.Hash, out var prevTxn)
? prevTxn.Transaction.Outputs[outpoint.N]
: nullOutput;
var inputAddressAmount = psbt.Inputs
.Select(x => x.PrevOut)
.Select(GetOutput)
.ToArray();
var outputAddressAmount = psbt.Outputs
.Select(x => x.GetCoin().TxOut)
.ToArray();
var psbtTxn = psbt.GetOriginalTransaction();
_transactionId = psbtTxn.GetHash().ToString();
_inputCount = inputAddressAmount.Length;
_inputCountString = $" input{TextHelpers.AddSIfPlural(_inputCount)} and ";
_outputCount = outputAddressAmount.Length;
_outputCountString = $" output{TextHelpers.AddSIfPlural(_outputCount)}.";
_totalInputValue = inputAddressAmount.Any(x => x.Value == nullMoney)
? null
: inputAddressAmount.Select(x => x.Value).Sum();
_totalOutputValue = outputAddressAmount.Any(x => x.Value == nullMoney)
? null
: outputAddressAmount.Select(x => x.Value).Sum();
_networkFee = TotalInputValue is null || TotalOutputValue is null
? null
: TotalInputValue - TotalOutputValue;
var nextCommandCanExecute = this.WhenAnyValue(x => x.IsBusy)
.Select(x => !x);
NextCommand = ReactiveCommand.CreateFromTask(
async() =>
{
try
{
await broadcaster.SendTransactionAsync(transaction);
Navigate().To(new SuccessBroadcastTransactionViewModel());
}
catch (Exception ex)
{
Logger.LogError(ex);
await ShowErrorAsync(Title, ex.ToUserFriendlyString(), "It was not possible to broadcast the transaction.");
}
},
nextCommandCanExecute);
EnableAutoBusyOn(NextCommand);
}