/// <inheritdoc />
public void SaveToFile(Wallet wallet)
{
File.WriteAllText(wallet.WalletFilePath, JsonConvert.SerializeObject(wallet, Formatting.Indented));
}
/// <inheritdoc />
public (string hex, uint256 transactionId, Money fee) BuildTransaction(string walletName, string accountName, CoinType coinType, string password, string destinationAddress, Money amount, string feeType, bool allowUnconfirmed)
{
if (amount == Money.Zero)
{
throw new Exception($"Cannot send transaction with 0 {this.coinType}");
}
// get the wallet and the account
Wallet wallet = this.GetWalletByName(walletName);
HdAccount account = wallet.AccountsRoot.Single(a => a.CoinType == coinType).GetAccountByName(accountName);
// get a list of transactions outputs that have not been spent
IEnumerable <TransactionData> spendableTransactions = account.GetSpendableTransactions();
// get total spendable balance in the account.
var balance = spendableTransactions.Sum(t => t.Amount);
// make sure we have enough funds
if (balance < amount)
{
throw new Exception("Not enough funds.");
}
// calculate which addresses needs to be used as well as the fee to be charged
var calculationResult = this.CalculateFees(spendableTransactions, amount);
// get extended private key
var privateKey = Key.Parse(wallet.EncryptedSeed, password, wallet.Network);
var seedExtKey = new ExtKey(privateKey, wallet.ChainCode);
var signingKeys = new HashSet <ISecret>();
var coins = new List <Coin>();
foreach (var transactionToUse in calculationResult.transactionsToUse)
{
var address = account.FindAddressesForTransaction(t => t.Id == transactionToUse.Id && t.Index == transactionToUse.Index && t.Amount > 0).Single();
ExtKey addressExtKey = seedExtKey.Derive(new KeyPath(address.HdPath));
BitcoinExtKey addressPrivateKey = addressExtKey.GetWif(wallet.Network);
signingKeys.Add(addressPrivateKey);
coins.Add(new Coin(transactionToUse.Id, (uint)transactionToUse.Index, transactionToUse.Amount, transactionToUse.ScriptPubKey));
}
// get address to send the change to
var changeAddress = account.GetFirstUnusedChangeAddress();
// get script destination address
Script destinationScript = PayToPubkeyHashTemplate.Instance.GenerateScriptPubKey(new BitcoinPubKeyAddress(destinationAddress, wallet.Network));
// build transaction
var builder = new TransactionBuilder();
Transaction tx = builder
.AddCoins(coins)
.AddKeys(signingKeys.ToArray())
.Send(destinationScript, amount)
.SetChange(changeAddress.ScriptPubKey)
.SendFees(calculationResult.fee)
.BuildTransaction(true);
if (!builder.Verify(tx))
{
throw new Exception("Could not build transaction, please make sure you entered the correct data.");
}
return(tx.ToHex(), tx.GetHash(), calculationResult.fee);
}
/// <inheritdoc />
public IEnumerable <HdAccount> GetAccountsByCoinType(string walletName, CoinType coinType)
{
Wallet wallet = this.GetWalletByName(walletName);
return(wallet.GetAccountsByCoinType(coinType));
}
/// <inheritdoc />
public Wallet GetWallet(string walletName)
{
Wallet wallet = this.GetWalletByName(walletName);
return(wallet);
}
/// <inheritdoc />
public IEnumerable <HdAddress> GetHistoryByCoinType(string walletName, CoinType coinType)
{
Wallet wallet = this.GetWalletByName(walletName);
return(this.GetHistoryByCoinType(wallet, coinType));
}
/// <inheritdoc />
public HdAccount GetUnusedAccount(string walletName, CoinType coinType, string password)
{
Wallet wallet = this.GetWalletByName(walletName);
return(this.GetUnusedAccount(wallet, coinType, password));
}
