public async Task <GetUnspentAddressesResponse> GetUnspentAddressesAsync(GetUnspentAddressesRequest request)
{
var nodeInfo = await this.Client.GetNodeInfoAsync();
var state = new InMemoryBip44GeneratorState
{
AccountIndex = request.AccountIndex,
AddressIndex = request.AddressOptions.StartIndex,
IsInternal = false
};
var unspentAddresses = new List <Bech32Address>();
var isFirst = true;
var zeroCount = 0;
var foundAll = false;
do
{
var bip32Path = Bip44AddressGenerator.GenerateAddress(state, isFirst);
isFirst = false;
var addressSeed = request.Seed.GenerateSeedFromPath(bip32Path);
var address = Ed25519Address.FromPublicKey(addressSeed.KeyPair.PublicKey);
var addressWithBalance = await this.Client.GetAddressFromEd25519Async(address.Address);
if (addressWithBalance.Balance == 0)
{
zeroCount++;
if (zeroCount >= request.AddressOptions.ZeroCount)
{
foundAll = true;
}
}
else
{
unspentAddresses.Add(Bech32Address.FromEd25519Address(addressWithBalance, bip32Path, nodeInfo.Bech32Hrp));
if (unspentAddresses.Count == request.AddressOptions.RequiredCount)
{
foundAll = true;
}
}
} while (!foundAll);
return(new GetUnspentAddressesResponse(unspentAddresses));
}
private async Task <Dictionary <UTXOInput, Ed25519Seed> > CalculateInputsAsync(Ed25519Seed seed, List <TransferOutput> outputs, int zeroCount, int accountIndex, int startIndex)
{
var state = new InMemoryBip44GeneratorState
{
AccountIndex = accountIndex,
AddressIndex = startIndex,
IsInternal = false
};
var inputs = new Dictionary <UTXOInput, Ed25519Seed>();
var consumedBalance = 0L;
var isFirst = true;
var zeroBalanceCount = 0;
var requiredBalance = outputs.Sum(o => o.Amount);
var foundAll = false;
do
{
var bip32Path = Bip44AddressGenerator.GenerateAddress(state, isFirst);
isFirst = false;
var addressSeed = seed.GenerateSeedFromPath(bip32Path);
var address = Ed25519Address.FromPublicKey(addressSeed.KeyPair.PublicKey);
var addressOutputs = await this.Client.GetOutputsFromEd25519Async(address.Address);
if (addressOutputs.Count == 0)
{
zeroBalanceCount++;
if (zeroBalanceCount >= zeroCount)
{
foundAll = true;
}
}
else
{
foreach (var outputId in addressOutputs.OutputIds)
{
var addressOutput = await this.Client.FindOutputByIdAsync(outputId);
if (!addressOutput.IsSpent &&
consumedBalance < requiredBalance)
{
if (addressOutput.Output.Amount == 0)
{
zeroBalanceCount++;
if (zeroBalanceCount >= zeroCount)
{
foundAll = true;
}
}
else
{
consumedBalance += addressOutput.Output.Amount;
inputs.Add(
new UTXOInput
{
TransactionId = addressOutput.TransactionId, TransactionOutputIndex = addressOutput.OutputIndex
},
addressSeed);
if (consumedBalance < requiredBalance)
{
continue;
}
if (consumedBalance - requiredBalance > 0)
{
outputs.Add(new TransferOutput(addressOutput.Output.Address, consumedBalance - requiredBalance));
}
foundAll = true;
}
}
}
}
} while (!foundAll);
return(inputs);
}