protected override async Task InvokeAsyncBase(InvocationContext context)
{
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
var dlc = await GetDLC("name", name);
if (dlc?.BuilderState is null ||
dlc?.OracleInfo is null)
{
throw new CommandException("name", "This DLC does not exist");
}
var builder = new DLCTransactionBuilder(dlc.BuilderState.ToString(), Network);
var psbt = context.ParsePSBT("signedpsbt", Network);
if (!builder.State.IsInitiator)
{
context.AssertState("name", dlc, false, DLCNextStep.Fund, Network);
var fullySigned = builder.Finalize(psbt);
dlc.BuilderState = builder.ExportStateJObject();
await Repository.SaveDLC(dlc);
context.WriteTransaction(fullySigned, builder.State.Funding?.FundCoin, Network);
}
else
{
context.AssertState("name", dlc, true, DLCNextStep.Fund, Network);
var key = await Repository.GetKey(dlc.FundKeyPath !);
try
{
var sign = builder.Sign2(key, psbt);
dlc.Sign = sign;
dlc.BuilderState = builder.ExportStateJObject();
await Repository.SaveDLC(dlc);
context.WriteObject(sign, Repository.JsonSettings);
}
catch (Exception ex)
{
throw new CommandException("signedpsbt", $"Invalid PSBT. ({ex.Message})");
}
}
}
public async Task <DLCState> NewDLC(OracleInfo oracleInfo, DLCTransactionBuilder builder)
{
var dir = Path.Combine(RepositoryDirectory, "DLCs");
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
var s = new DLCState()
{
OracleInfo = oracleInfo,
BuilderState = builder.ExportStateJObject(),
Id = RandomUtils.GetUInt256()
};
var file = GetDLCFilePath(s.Id);
await File.WriteAllTextAsync(file, JsonConvert.SerializeObject(s, JsonSettings));
return(s);
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var offer = DLCHelpers.GetOffer(context, Repository.JsonSettings);
var name = context.ParseResult.CommandResult.GetArgumentValueOrDefault <string>("name")?.Trim();
if (name is null)
{
throw new CommandOptionRequiredException("name");
}
if (await this.TryGetDLC(name) != null)
{
throw new CommandException("name", "This DLC already exists");
}
if (offer.OracleInfo is null)
{
throw new CommandException("offer", "Missing oracleInfo");
}
if (offer.Timeouts is null)
{
throw new CommandException("offer", "Missing timeouts");
}
if (offer.ContractInfo is null)
{
throw new CommandException("offer", "Missing contractInfos");
}
var oracle = await Repository.GetOracle(offer.OracleInfo.PubKey);
if (oracle is null)
{
throw new CommandException("offer", "Unknown oracle");
}
var evt = await Repository.GetEvent(offer.OracleInfo.PubKey, offer.OracleInfo.RValue);
if (evt is null)
{
throw new CommandException("offer", "Unknown event");
}
var maturity = new LockTimeEstimation(offer.Timeouts.ContractMaturity, Network);
var refund = new LockTimeEstimation(offer.Timeouts.ContractTimeout, Network);
if (!refund.UnknownEstimation)
{
if (refund.EstimatedRemainingBlocks == 0)
{
throw new CommandException("offer", "The refund should not be immediately valid");
}
if (refund.EstimatedRemainingBlocks < maturity.EstimatedRemainingBlocks)
{
throw new CommandException("offer", "The refund should not be valid faster than the contract execution transactions");
}
}
offer.SetContractPreimages(evt.Outcomes);
try
{
var builder = new DLCTransactionBuilder(false, null, null, null, Network);
builder.Accept(offer);
var dlc = await Repository.NewDLC(offer.OracleInfo, builder);
dlc.BuilderState = builder.ExportStateJObject();
dlc.Offer = JObject.FromObject(offer, JsonSerializer.Create(Repository.JsonSettings));
await NameRepository.AsDLCNameRepository().SetMapping(name, dlc.Id);
await Repository.SaveDLC(dlc);
context.Console.Out.Write($"Contract accepted, you now need to setup the DLC. For more information, run `dlc show \"{name}\"`.");
}
catch (Exception ex)
{
throw new CommandException("offer", $"Invalid offer or PSBT. ({ex.Message})");
}
}
