public Task <CreateTransactionResponse> GetTransferAllTransaction(BitcoinAddress @from, BitcoinAddress to, Guid transactionId) { return(Retry.Try(async() => { var context = _transactionBuildContextFactory.Create(_connectionParams.Network); var channels = await _offchainService.GetCurrentChannels(from.ToString()); var assets = await _assetRepository.Values(); return await context.Build(async() => { var builder = new TransactionBuilder(); var uncoloredCoins = (await _bitcoinOutputsService.GetUncoloredUnspentOutputs(from.ToString())).ToList(); var coloredCoins = (await _bitcoinOutputsService.GetColoredUnspentOutputs(from.ToString())).ToList(); if (uncoloredCoins.Count == 0 && coloredCoins.Count == 0) { throw new BackendException("Address has no unspent outputs", ErrorCode.NoCoinsFound); } async Task <IDestination> GetChangeWallet(string asset) { var assetSetting = await _offchainService.GetAssetSetting(asset); return OpenAssetsHelper.ParseAddress(!string.IsNullOrEmpty(assetSetting.ChangeWallet) ? assetSetting.ChangeWallet : assetSetting.HotWallet); }; if (uncoloredCoins.Count > 0) { var hubAmount = Money.Zero; IDestination hubAmountAddress = null; var channel = channels.FirstOrDefault(o => o.Asset == "BTC"); if (channel != null) { hubAmount = Money.FromUnit(channel.HubAmount, MoneyUnit.BTC); hubAmountAddress = await GetChangeWallet("BTC"); } builder.AddCoins(uncoloredCoins); context.AddCoins(uncoloredCoins); builder.Send(to, uncoloredCoins.Sum(o => o.TxOut.Value) - hubAmount); if (hubAmount > 0) { builder.Send(hubAmountAddress, hubAmount); } } foreach (var assetGroup in coloredCoins.GroupBy(o => o.AssetId)) { var asset = assets.First(o => o.BlockChainAssetId == assetGroup.Key.GetWif(_connectionParams.Network).ToString()); var channel = channels.FirstOrDefault(o => o.Asset == asset.Id); var sum = new AssetMoney(assetGroup.Key); foreach (var coloredCoin in assetGroup) { sum += coloredCoin.Amount; } var hubAmount = new AssetMoney(assetGroup.Key); IDestination hubAmountAddress = null; if (channel != null) { hubAmount = new AssetMoney(assetGroup.Key, channel.HubAmount, asset.MultiplierPower); hubAmountAddress = await GetChangeWallet(asset.Id); } builder.AddCoins(assetGroup.ToList()); context.AddCoins(assetGroup.ToList()); builder.SendAsset(to, sum - hubAmount); if (hubAmount.Quantity > 0) { builder.SendAsset(hubAmountAddress, hubAmount); } } await _transactionBuildHelper.AddFee(builder, context); var buildedTransaction = builder.BuildTransaction(true); await _spentOutputService.SaveSpentOutputs(transactionId, buildedTransaction); await SaveNewOutputs(transactionId, buildedTransaction, context); foreach (var offchainChannel in channels) { await _offchainService.RemoveChannel(offchainChannel); } return new CreateTransactionResponse(buildedTransaction.ToHex(), transactionId); }); }, exception => (exception as BackendException)?.Code == ErrorCode.TransactionConcurrentInputsProblem, 3, _log)); }
public async Task RemoveChannel([FromBody] RemoveChannelModel model) { var asset = await GetAsset(model.Asset); await _offchain.RemoveChannel(model.Multisig, asset); }