/// <summary>
/// Create NEP17 token transfer transaction
/// </summary>
/// <param name="scriptHash">contract script hash</param>
/// <param name="fromKey">from KeyPair</param>
/// <param name="to">to account script hash</param>
/// <param name="amount">transfer amount</param>
/// <param name="data">onPayment data</param>
/// <returns></returns>
public async Task <Transaction> CreateTransferTxAsync(UInt160 scriptHash, KeyPair fromKey, UInt160 to, BigInteger amount, object data = null)
{
var sender = Contract.CreateSignatureRedeemScript(fromKey.PublicKey).ToScriptHash();
Signer[] signers = new[] { new Signer {
Scopes = WitnessScope.CalledByEntry, Account = sender
} };
byte[] script = scriptHash.MakeScript("transfer", true, sender, to, amount, data);
TransactionManagerFactory factory = new TransactionManagerFactory(rpcClient, magic);
TransactionManager manager = await factory.MakeTransactionAsync(script, signers).ConfigureAwait(false);
return(await manager
.AddSignature(fromKey)
.SignAsync().ConfigureAwait(false));
}
/// <summary>
/// Create NEP17 token transfer transaction from multi-sig account
/// </summary>
/// <param name="scriptHash">contract script hash</param>
/// <param name="m">multi-sig min signature count</param>
/// <param name="pubKeys">multi-sig pubKeys</param>
/// <param name="fromKeys">sign keys</param>
/// <param name="to">to account</param>
/// <param name="amount">transfer amount</param>
/// <param name="data">onPayment data</param>
/// <returns></returns>
public async Task <Transaction> CreateTransferTxAsync(UInt160 scriptHash, int m, ECPoint[] pubKeys, KeyPair[] fromKeys, UInt160 to, BigInteger amount, object data = null)
{
if (m > fromKeys.Length)
{
throw new ArgumentException($"Need at least {m} KeyPairs for signing!");
}
var sender = Contract.CreateMultiSigContract(m, pubKeys).ScriptHash;
Signer[] signers = new[] { new Signer {
Scopes = WitnessScope.CalledByEntry, Account = sender
} };
byte[] script = scriptHash.MakeScript("transfer", true, sender, to, amount, data);
TransactionManagerFactory factory = new TransactionManagerFactory(rpcClient, magic);
TransactionManager manager = await factory.MakeTransactionAsync(script, signers).ConfigureAwait(false);
return(await manager
.AddMultiSig(fromKeys, m, pubKeys)
.SignAsync().ConfigureAwait(false));
}
/// <summary>
/// Deploy Contract, return signed transaction
/// </summary>
/// <param name="contractScript">contract script</param>
/// <param name="manifest">contract manifest</param>
/// <param name="key">sender KeyPair</param>
/// <returns></returns>
public async Task <Transaction> CreateDeployContractTxAsync(byte[] nefFile, ContractManifest manifest, KeyPair key)
{
byte[] script;
using (ScriptBuilder sb = new ScriptBuilder())
{
sb.EmitDynamicCall(NativeContract.ContractManagement.Hash, "deploy", true, nefFile, manifest.ToString());
script = sb.ToArray();
}
UInt160 sender = Contract.CreateSignatureRedeemScript(key.PublicKey).ToScriptHash();
Signer[] signers = new[] { new Signer {
Scopes = WitnessScope.CalledByEntry, Account = sender
} };
TransactionManagerFactory factory = new TransactionManagerFactory(rpcClient, magic);
TransactionManager manager = await factory.MakeTransactionAsync(script, signers).ConfigureAwait(false);
return(await manager
.AddSignature(key)
.SignAsync().ConfigureAwait(false));
}
/// <summary>
/// Helper function for one-off TransactionManager creation
/// </summary>
public static Task <TransactionManager> MakeTransactionAsync(RpcClient rpcClient, ReadOnlyMemory <byte> script, long systemFee, Signer[] signers = null, TransactionAttribute[] attributes = null)
{
var factory = new TransactionManagerFactory(rpcClient);
return(factory.MakeTransactionAsync(script, systemFee, signers, attributes));
}
/// <summary>
/// Helper function for one-off TransactionManager creation
/// </summary>
public static Task <TransactionManager> MakeTransactionAsync(RpcClient rpcClient, byte[] script, Signer[] signers = null, TransactionAttribute[] attributes = null)
{
var factory = new TransactionManagerFactory(rpcClient);
return(factory.MakeTransactionAsync(script, signers, attributes));
}
