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 is null)
{
throw new CommandException("name", "This DLC does not exist");
}
var psbt = context.ParsePSBT("setuppsbt", Network);
var builder = dlc.GetBuilder(Network);
if (builder.State.IsInitiator)
{
context.AssertState("name", dlc, true, DLCNextStep.Setup, Network);
var key = await Repository.CreatePrivateKey();
try
{
var offer = builder.FundOffer(key.PrivateKey, psbt);
dlc.FundKeyPath = key.KeyPath;
dlc.Abort = psbt;
dlc.BuilderState = builder.ExportStateJObject();
dlc.Offer = offer;
await Repository.AddAliasId(dlc.LocalId, offer.GetTemporaryContractId());
await Repository.SaveDLC(dlc);
context.WriteObject(offer, Repository.JsonSettings);
}
catch (InvalidOperationException err)
{
throw new CommandException("fundpsbt", err.Message);
}
}
else
{
context.AssertState("name", dlc, false, DLCNextStep.Setup, Network);
var k = await Repository.CreatePrivateKey();
var accept = builder.FundAccept(k.PrivateKey, psbt);
dlc.FundKeyPath = k.KeyPath;
dlc.Abort = psbt;
dlc.BuilderState = builder.ExportStateJObject();
dlc.Accept = accept;
if (builder.State.ContractId is null)
{
throw new InvalidOperationException("ContractId should be known by now");
}
await Repository.AddAliasId(dlc.LocalId, builder.State.ContractId);
await Repository.SaveDLC(dlc);
context.WriteObject(accept, Repository.JsonSettings);
}
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var offer = DLCHelpers.GetOffer(context, Network);
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 collateral = offer.ToDiscretePayoffs(offer.ContractInfo).Inverse().CalculateMinimumCollateral();
var dlc = await Repository.NewDLC(offer.OracleInfo, builder);
dlc.BuilderState = builder.ExportStateJObject();
dlc.Offer = offer;
await NameRepository.AsDLCNameRepository().SetMapping(name, dlc.LocalId);
await Repository.AddAliasId(dlc.LocalId, offer.GetTemporaryContractId());
await Repository.SaveDLC(dlc);
context.Console.Out.Write($"Contract accepted, you now need to setup the DLC sending {collateral} BTC to yourself. For more information, run `dlc show \"{name}\"`.");
}
catch (Exception ex)
{
throw new CommandException("offer", $"Invalid offer or PSBT. ({ex.Message})");
}
}
