Add pending signature to ProcessInvokeWithWallet (#490)

* Add pending signature

* Optimize

* Remove if

src/RpcServer/RpcServer.Wallet.cs

@@ -169,32 +169,33 @@ protected virtual JObject OpenWallet(JArray _params)
 
  private void ProcessInvokeWithWallet(JObject result, Signers signers = null)
  {
- Transaction tx = null;
- if (wallet != null && signers != null)
+ if (wallet == null || signers == null) return;
+
+ Signer[] witnessSigners = signers.GetSigners().ToArray();
+ UInt160 sender = signers.Size > 0 ? signers.GetSigners()[0].Account : null;
+ if (witnessSigners.Length <= 0) return;
+
+ Transaction tx;
+ try
  {
- Signer[] witnessSigners = signers.GetSigners().ToArray();
- UInt160 sender = signers.Size > 0 ? signers.GetSigners()[0].Account : null;
- if (witnessSigners.Count() > 0)
- {
- try
- {
- tx = wallet.MakeTransaction(Convert.FromBase64String(result["script"].AsString()), sender, witnessSigners);
- }
- catch (Exception e)
- {
- result["exception"] = GetExceptionMessage(e);
- return;
- }
- ContractParametersContext context = new ContractParametersContext(tx);
- wallet.Sign(context);
- if (context.Completed)
- tx.Witnesses = context.GetWitnesses();
- else
- tx = null;
- }
+ tx = wallet.MakeTransaction(Convert.FromBase64String(result["script"].AsString()), sender, witnessSigners);
+ }
+ catch (Exception e)
+ {
+ result["exception"] = GetExceptionMessage(e);
+ return;
  }
- if (tx != null)
+ ContractParametersContext context = new ContractParametersContext(tx);
+ wallet.Sign(context);
+ if (context.Completed)
+ {
+ tx.Witnesses = context.GetWitnesses();
  result["tx"] = Convert.ToBase64String(tx.ToArray());
+ }
+ else
+ {
+ result["pendingsignature"] = context.ToJson();
+ }
  }
 
  [RpcMethod]