/// <summary>
/// TransactionManager Constructor
/// </summary>
/// <param name="rpc">the RPC client to call NEO RPC API</param>
/// <param name="sender">the account script hash of sender</param>
public TransactionManager(RpcClient rpc, UInt160 sender)
{
rpcClient = rpc;
policyAPI = new PolicyAPI(rpc);
nep5API = new Nep5API(rpc);
this.sender = sender;
}
/// <summary>
/// Returns the balance of the corresponding asset in the wallet, based on the specified asset Id.
/// This method applies to assets that conform to NEP-5 standards.
/// </summary>
/// <returns>new address as string</returns>
public BigDecimal GetBalance(string assetId)
{
byte decimals = new Nep5API(this).Decimals(UInt160.Parse(assetId));
BigInteger balance = BigInteger.Parse(RpcSend("getbalance", assetId)["balance"].AsString());
return(new BigDecimal(balance, decimals));
}
/// <summary>
/// Create an unsigned Transaction object with given parameters.
/// </summary>
/// <param name="script">Transaction Script</param>
/// <param name="attributes">Transaction Attributes</param>
/// <param name="cosigners">Transaction Cosigners</param>
/// <param name="networkFee">Transaction NetworkFee, will set to estimate value(with only basic signatures) when networkFee is 0</param>
/// <returns></returns>
public TransactionManager MakeTransaction(byte[] script, TransactionAttribute[] attributes = null, Cosigner[] cosigners = null, long networkFee = 0)
{
var random = new Random();
uint height = rpcClient.GetBlockCount() - 1;
Tx = new Transaction
{
Version = 0,
Nonce = (uint)random.Next(),
Script = script,
Sender = sender,
ValidUntilBlock = height + Transaction.MaxValidUntilBlockIncrement,
Attributes = attributes ?? new TransactionAttribute[0],
Cosigners = cosigners ?? new Cosigner[0],
Witnesses = new Witness[0]
};
RpcInvokeResult result = rpcClient.InvokeScript(script);
Tx.SystemFee = Math.Max(long.Parse(result.GasConsumed) - ApplicationEngine.GasFree, 0);
if (Tx.SystemFee > 0)
{
long d = (long)NativeContract.GAS.Factor;
long remainder = Tx.SystemFee % d;
if (remainder > 0)
{
Tx.SystemFee += d - remainder;
}
else if (remainder < 0)
{
Tx.SystemFee -= remainder;
}
}
context = new ContractParametersContext(Tx);
// set networkfee to estimate value when networkFee is 0
Tx.NetworkFee = networkFee == 0 ? EstimateNetworkFee() : networkFee;
var gasBalance = new Nep5API(rpcClient).BalanceOf(NativeContract.GAS.Hash, sender);
if (gasBalance >= Tx.SystemFee + Tx.NetworkFee)
{
return(this);
}
throw new InvalidOperationException($"Insufficient GAS in address: {sender.ToAddress()}");
}
/// <summary>
/// WalletAPI Constructor
/// </summary>
/// <param name="rpc">the RPC client to call NEO RPC methods</param>
public WalletAPI(RpcClient rpc)
{
rpcClient = rpc;
nep5API = new Nep5API(rpc);
}
/// <summary>
/// TransactionManager Constructor
/// </summary>
/// <param name="rpc">the RPC client to call NEO RPC API</param>
/// <param name="sender">the account script hash of sender</param>
public TransactionManager(RpcClient rpc)
{
rpcClient = rpc;
policyAPI = new PolicyAPI(rpc);
nep5API = new Nep5API(rpc);
}