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281
Plugins/BTCPayServer.Plugins.Breez/BreezLightningClient.cs
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281
Plugins/BTCPayServer.Plugins.Breez/BreezLightningClient.cs
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using System;
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using System.Collections.Concurrent;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using Breez.Sdk;
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using NBitcoin;
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using Network = Breez.Sdk.Network;
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namespace BTCPayServer.Lightning.Breez;
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public class BreezLightningClient: ILightningClient, IDisposable, EventListener
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{
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private readonly NBitcoin.Network _network;
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public BreezLightningClient(string inviteCode, string apiKey, string workingDir, NBitcoin.Network network,
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string mnemonic)
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{
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_network = network;
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var nodeConfig = new NodeConfig.Greenlight(
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new GreenlightNodeConfig(null, inviteCode)
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);
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var config = BreezSdkMethods.DefaultConfig(
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EnvironmentType.PRODUCTION,
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apiKey,
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nodeConfig
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) with {
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workingDir= workingDir,
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network = network == NBitcoin.Network.Main ? Network.BITCOIN : network == NBitcoin.Network.TestNet ? Network.TESTNET: network == NBitcoin.Network.RegTest? Network.REGTEST: Network.SIGNET
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};
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var seed = BreezSdkMethods.MnemonicToSeed(mnemonic);
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Sdk = BreezSdkMethods.Connect(config, seed, this);
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}
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public BlockingBreezServices Sdk { get; }
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public event EventHandler<BreezEvent> EventReceived;
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public void OnEvent(BreezEvent e)
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{
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EventReceived?.Invoke(this, e);
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}
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public Task<LightningInvoice> GetInvoice(string invoiceId, CancellationToken cancellation = default)
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{
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return GetInvoice(uint256.Parse(invoiceId), cancellation);
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}
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private LightningPayment ToLightningPayment(Payment payment)
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{
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if (payment?.details is not PaymentDetails.Ln lnPaymentDetails)
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{
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return null;
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}
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return new LightningPayment()
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{
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Amount = LightMoney.MilliSatoshis(payment.amountMsat),
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Id = lnPaymentDetails.data.paymentHash,
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Preimage = lnPaymentDetails.data.paymentPreimage,
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PaymentHash = lnPaymentDetails.data.paymentHash,
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BOLT11 = lnPaymentDetails.data.bolt11,
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Status = payment.status switch
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{
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PaymentStatus.FAILED => LightningPaymentStatus.Failed,
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PaymentStatus.COMPLETE => LightningPaymentStatus.Complete,
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PaymentStatus.PENDING => LightningPaymentStatus.Pending,
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_ => throw new ArgumentOutOfRangeException()
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},
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CreatedAt = DateTimeOffset.FromUnixTimeMilliseconds(payment.paymentTime),
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Fee = LightMoney.MilliSatoshis(payment.feeMsat),
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AmountSent = LightMoney.MilliSatoshis(payment.amountMsat)
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};
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}
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private LightningInvoice FromPayment(Payment p)
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{
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if (p?.details is not PaymentDetails.Ln lnPaymentDetails)
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{
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return null;
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}
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var bolt11 = BOLT11PaymentRequest.Parse(lnPaymentDetails.data.bolt11, _network);
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return new LightningInvoice()
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{
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Amount = LightMoney.MilliSatoshis(p.amountMsat),
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Id = lnPaymentDetails.data.paymentHash,
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Preimage = lnPaymentDetails.data.paymentPreimage,
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PaymentHash = lnPaymentDetails.data.paymentHash,
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BOLT11 = lnPaymentDetails.data.bolt11,
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Status = p.status switch
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{
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PaymentStatus.FAILED => LightningInvoiceStatus.Expired,
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PaymentStatus.COMPLETE => LightningInvoiceStatus.Paid,
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_ => LightningInvoiceStatus.Unpaid
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},
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PaidAt = DateTimeOffset.FromUnixTimeMilliseconds(p.paymentTime),
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ExpiresAt = bolt11.ExpiryDate
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};
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}
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public async Task<LightningInvoice> GetInvoice(uint256 paymentHash, CancellationToken cancellation = default)
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{
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var p = Sdk.PaymentByHash(paymentHash.ToString()!);
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return FromPayment(p);
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}
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public async Task<LightningInvoice[]> ListInvoices(CancellationToken cancellation = default)
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{
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return await ListInvoices(null, cancellation);
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}
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public async Task<LightningInvoice[]> ListInvoices(ListInvoicesParams request, CancellationToken cancellation = default)
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{
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return Sdk.ListPayments(new ListPaymentsRequest(PaymentTypeFilter.RECEIVED, null, null, request?.PendingOnly is not true, (uint?) request?.OffsetIndex, null))
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.Select(FromPayment).ToArray();
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}
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public async Task<LightningPayment> GetPayment(string paymentHash, CancellationToken cancellation = default)
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{
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return ToLightningPayment(Sdk.PaymentByHash(paymentHash));
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}
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public async Task<LightningPayment[]> ListPayments(CancellationToken cancellation = default)
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{
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return await ListPayments(null, cancellation);
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}
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public async Task<LightningPayment[]> ListPayments(ListPaymentsParams request, CancellationToken cancellation = default)
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{
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return Sdk.ListPayments(new ListPaymentsRequest(PaymentTypeFilter.RECEIVED, null, null, null, (uint?) request?.OffsetIndex, null))
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.Select(ToLightningPayment).ToArray();
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}
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public async Task<LightningInvoice> CreateInvoice(LightMoney amount, string description, TimeSpan expiry, CancellationToken cancellation = default)
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{
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var expiryS =expiry == TimeSpan.Zero? (uint?) null: Math.Max(0, (uint)expiry.TotalSeconds);
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var p = Sdk.ReceivePayment(new ReceivePaymentRequest((ulong)amount.MilliSatoshi, description, null, null, false,expiryS ));
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return await GetInvoice(p.lnInvoice.paymentHash, cancellation);
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}
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public async Task<LightningInvoice> CreateInvoice(CreateInvoiceParams createInvoiceRequest, CancellationToken cancellation = default)
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{
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var expiryS =createInvoiceRequest.Expiry == TimeSpan.Zero? (uint?) null: Math.Max(0, (uint)createInvoiceRequest.Expiry.TotalSeconds);
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var p = Sdk.ReceivePayment(new ReceivePaymentRequest((ulong)createInvoiceRequest.Amount.MilliSatoshi, (createInvoiceRequest.Description??createInvoiceRequest.DescriptionHash.ToString())!, null, null, createInvoiceRequest.DescriptionHashOnly,expiryS ));
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return await GetInvoice(p.lnInvoice.paymentHash, cancellation);
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}
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public async Task<ILightningInvoiceListener> Listen(CancellationToken cancellation = default)
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{
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return new BreezInvoiceListener(this, cancellation);
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}
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public async Task<LightningNodeInformation> GetInfo(CancellationToken cancellation = default)
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{
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var ni = Sdk.NodeInfo();
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return new LightningNodeInformation()
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{
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PeersCount = ni.connectedPeers.Count,
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Alias = $"greenlight {ni.id}",
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NodeInfoList = {new NodeInfo(new PubKey(ni.id), "blockstrean.com", 69)},//we have to fake this as btcpay currently requires this to enable the payment method
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BlockHeight = (int)ni.blockHeight
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};
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}
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public async Task<LightningNodeBalance> GetBalance(CancellationToken cancellation = default)
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{
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var ni = Sdk.NodeInfo();
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return new LightningNodeBalance()
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{
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OnchainBalance =
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new OnchainBalance()
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{
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Confirmed = Money.Coins(LightMoney.MilliSatoshis(ni.onchainBalanceMsat)
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.ToUnit(LightMoneyUnit.BTC))
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},
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OffchainBalance = new OffchainBalance()
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{
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Local = LightMoney.MilliSatoshis(ni.channelsBalanceMsat),
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Remote = LightMoney.MilliSatoshis(ni.inboundLiquidityMsats),
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}
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};
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}
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public async Task<PayResponse> Pay(PayInvoiceParams payParams, CancellationToken cancellation = default)
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{
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return await Pay(null, payParams, cancellation);
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}
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public async Task<PayResponse> Pay(string bolt11, PayInvoiceParams payParams, CancellationToken cancellation = default)
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{
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throw new NotImplementedException();
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}
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public async Task<PayResponse> Pay(string bolt11, CancellationToken cancellation = default)
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{
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return await Pay(bolt11, null, cancellation);
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}
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public async Task<OpenChannelResponse> OpenChannel(OpenChannelRequest openChannelRequest, CancellationToken cancellation = default)
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{
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throw new NotImplementedException();
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}
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public async Task<BitcoinAddress> GetDepositAddress(CancellationToken cancellation = default)
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{
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throw new NotImplementedException();
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}
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public async Task<ConnectionResult> ConnectTo(NodeInfo nodeInfo, CancellationToken cancellation = default)
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{
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throw new NotImplementedException();
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}
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public async Task CancelInvoice(string invoiceId, CancellationToken cancellation = default)
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{
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throw new NotImplementedException();
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}
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public async Task<LightningChannel[]> ListChannels(CancellationToken cancellation = default)
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{
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throw new NotImplementedException();
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}
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public void Dispose()
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{
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Sdk.Dispose();
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Sdk.Dispose();
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}
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public class BreezInvoiceListener: ILightningInvoiceListener
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{
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private readonly BreezLightningClient _breezLightningClient;
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private readonly CancellationToken _cancellationToken;
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public BreezInvoiceListener(BreezLightningClient breezLightningClient, CancellationToken cancellationToken)
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{
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_breezLightningClient = breezLightningClient;
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_cancellationToken = cancellationToken;
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breezLightningClient.EventReceived += BreezLightningClientOnEventReceived;
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}
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private readonly ConcurrentQueue<Task<LightningInvoice>> _invoices = new();
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private void BreezLightningClientOnEventReceived(object sender, BreezEvent e)
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{
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if (e is BreezEvent.InvoicePaid pre)
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{
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_invoices.Enqueue(_breezLightningClient.GetInvoice(pre.details.paymentHash, _cancellationToken));
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}
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}
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public void Dispose()
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{
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_breezLightningClient.EventReceived -= BreezLightningClientOnEventReceived;
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}
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public async Task<LightningInvoice> WaitInvoice(CancellationToken cancellation)
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{
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while(cancellation.IsCancellationRequested is not true)
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{
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if (_invoices.TryDequeue(out var task))
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{
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return await task.WithCancellation(cancellation);
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}
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await Task.Delay(100, cancellation);
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}
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cancellation.ThrowIfCancellationRequested();
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return null;
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}
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}
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}
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