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", $"Invalid offer or PSBT. ({ex.Message})");
}
}
protected override async Task InvokeAsyncBase(InvocationContext context)
{
var offer = context.GetOffer(Network);
if (offer.OracleInfo is null)
{
throw new CommandException("offer", "Missing oracleInfo");
}
if (offer.Timeouts is null)
{
throw new CommandException("offer", "Missing timeouts");
}
if (offer.ContractInfo is null)
{
throw new CommandException("offer", "Missing contractInfos");
}
var oracle = await Repository.GetOracle(offer.OracleInfo.PubKey);
var oracleName = await NameRepository.GetName(Scopes.Oracles, new OracleId(offer.OracleInfo.PubKey).ToString());
if (oracle is null || oracleName is null)
{
throw new CommandException("offer", "Unknown oracle");
}
var evt = await Repository.GetEvent(offer.OracleInfo.PubKey, offer.OracleInfo.RValue);
if (evt?.EventId is null)
{
throw new CommandException("offer", "Unknown event");
}
var maturity = new LockTimeEstimation(offer.Timeouts.ContractMaturity, Network);
var refund = new LockTimeEstimation(offer.Timeouts.ContractTimeout, Network);
if (!refund.UnknownEstimation)
{
if (refund.EstimatedRemainingBlocks == 0)
{
throw new CommandException("offer", "The refund should not be immediately valid");
}
if (refund.EstimatedRemainingBlocks < maturity.EstimatedRemainingBlocks)
{
throw new CommandException("offer", "The refund should not be valid faster than the contract execution transactions");
}
}
if (!offer.SetContractPreimages(evt.Outcomes))
{
throw new CommandException("offer", "The contract info of the offer does not match the specification of the event");
}
try
{
var review = new OfferReview(offer);
var evtName = (await NameRepository.AsEventRepository().ResolveName(evt.EventId)) ?? new EventFullName("???", "???");
context.Console.Out.WriteLine($"Event: {evtName}");
context.Console.Out.WriteLine($"Fee rate: {offer.FeeRate!.SatoshiPerByte} sat/vbyte");
context.Console.Out.WriteLine($"The payoff function if you accept:");
PrintPayoffs(context, review.AcceptorPayoffs);
context.Console.Out.WriteLine($"Your expected collateral: {review.AcceptorCollateral.ToString(false, false)}");
context.Console.Out.WriteLine($"Contract Execution validity: " + maturity.ToString());
context.Console.Out.WriteLine($"Refund validity: " + refund.ToString());
context.Console.Out.WriteLine($"How to accept this offer:");
context.Console.Out.WriteLine($"If your plan to accept this offer, you need to run 'dlc accept <dlcname> <offer>'. The DLC name is arbitrary and local, you will use it to manage your DLC.");
}
catch (Exception ex)
{
throw new CommandException("offer", $"Invalid offer. ({ex.Message})");
}
}