private async Task <PaymentMethod> CreatePaymentMethodAsync(Dictionary <CurrencyPair, Task <RateResult> > fetchingByCurrencyPair, IPaymentMethodHandler handler, ISupportedPaymentMethod supportedPaymentMethod, BTCPayNetworkBase network, InvoiceEntity entity, StoreData store, InvoiceLogs logs)
{
try
{
var logPrefix = $"{supportedPaymentMethod.PaymentId.ToPrettyString()}:";
var storeBlob = store.GetStoreBlob();
var preparePayment = handler.PreparePayment(supportedPaymentMethod, store, network);
var rate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, entity.ProductInformation.Currency)];
if (rate.BidAsk == null)
{
return(null);
}
PaymentMethod paymentMethod = new PaymentMethod();
paymentMethod.ParentEntity = entity;
paymentMethod.Network = network;
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
paymentMethod.Rate = rate.BidAsk.Bid;
paymentMethod.PreferOnion = Uri.TryCreate(entity.ServerUrl, UriKind.Absolute, out var u) && u.DnsSafeHost.EndsWith(".onion", StringComparison.OrdinalIgnoreCase);
using (logs.Measure($"{logPrefix} Payment method details creation"))
{
var paymentDetails = await handler.CreatePaymentMethodDetails(logs, supportedPaymentMethod, paymentMethod, store, network, preparePayment);
paymentMethod.SetPaymentMethodDetails(paymentDetails);
}
var errorMessage = await
handler
.IsPaymentMethodAllowedBasedOnInvoiceAmount(storeBlob, fetchingByCurrencyPair,
paymentMethod.Calculate().Due, supportedPaymentMethod.PaymentId);
if (!string.IsNullOrEmpty(errorMessage))
{
logs.Write($"{logPrefix} {errorMessage}");
return(null);
}
#pragma warning disable CS0618
if (paymentMethod.GetId().IsBTCOnChain)
{
entity.TxFee = paymentMethod.NextNetworkFee;
entity.Rate = paymentMethod.Rate;
entity.DepositAddress = paymentMethod.DepositAddress;
}
#pragma warning restore CS0618
return(paymentMethod);
}
catch (PaymentMethodUnavailableException ex)
{
logs.Write($"{supportedPaymentMethod.PaymentId.CryptoCode}: Payment method unavailable ({ex.Message})");
}
catch (Exception ex)
{
logs.Write($"{supportedPaymentMethod.PaymentId.CryptoCode}: Unexpected exception ({ex.ToString()})");
}
return(null);
}
internal async Task <DataWrapper <InvoiceResponse> > CreateInvoiceCore(CreateInvoiceRequest invoice, StoreData store, string serverUrl, List <string> additionalTags = null, CancellationToken cancellationToken = default)
{
if (!store.HasClaim(Policies.CanCreateInvoice.Key))
{
throw new UnauthorizedAccessException();
}
InvoiceLogs logs = new InvoiceLogs();
logs.Write("Creation of invoice starting");
var entity = new InvoiceEntity
{
Version = InvoiceEntity.Lastest_Version,
InvoiceTime = DateTimeOffset.UtcNow,
Networks = _NetworkProvider
};
var getAppsTaggingStore = _InvoiceRepository.GetAppsTaggingStore(store.Id);
var storeBlob = store.GetStoreBlob();
EmailAddressAttribute emailValidator = new EmailAddressAttribute();
entity.ExpirationTime = entity.InvoiceTime.AddMinutes(storeBlob.InvoiceExpiration);
entity.MonitoringExpiration = entity.ExpirationTime + TimeSpan.FromMinutes(storeBlob.MonitoringExpiration);
entity.OrderId = invoice.OrderId;
entity.ServerUrl = serverUrl;
entity.FullNotifications = invoice.FullNotifications || invoice.ExtendedNotifications;
entity.ExtendedNotifications = invoice.ExtendedNotifications;
if (invoice.NotificationURL != null &&
Uri.TryCreate(invoice.NotificationURL, UriKind.Absolute, out var notificationUri) &&
(notificationUri.Scheme == "http" || notificationUri.Scheme == "https"))
{
entity.NotificationURL = notificationUri.AbsoluteUri;
}
entity.NotificationEmail = invoice.NotificationEmail;
entity.BuyerInformation = Map <CreateInvoiceRequest, BuyerInformation>(invoice);
entity.PaymentTolerance = storeBlob.PaymentTolerance;
if (additionalTags != null)
{
entity.InternalTags.AddRange(additionalTags);
}
//Another way of passing buyer info to support
FillBuyerInfo(invoice.Buyer, entity.BuyerInformation);
if (entity?.BuyerInformation?.BuyerEmail != null)
{
if (!EmailValidator.IsEmail(entity.BuyerInformation.BuyerEmail))
{
throw new BitpayHttpException(400, "Invalid email");
}
entity.RefundMail = entity.BuyerInformation.BuyerEmail;
}
var taxIncluded = invoice.TaxIncluded.HasValue ? invoice.TaxIncluded.Value : 0m;
var currencyInfo = _CurrencyNameTable.GetNumberFormatInfo(invoice.Currency, false);
if (currencyInfo != null)
{
int divisibility = currencyInfo.CurrencyDecimalDigits;
invoice.Price = invoice.Price.RoundToSignificant(ref divisibility);
divisibility = currencyInfo.CurrencyDecimalDigits;
invoice.TaxIncluded = taxIncluded.RoundToSignificant(ref divisibility);
}
invoice.Price = Math.Max(0.0m, invoice.Price);
invoice.TaxIncluded = Math.Max(0.0m, taxIncluded);
invoice.TaxIncluded = Math.Min(taxIncluded, invoice.Price);
entity.ProductInformation = Map <CreateInvoiceRequest, ProductInformation>(invoice);
entity.RedirectURL = invoice.RedirectURL ?? store.StoreWebsite;
if (!Uri.IsWellFormedUriString(entity.RedirectURL, UriKind.Absolute))
{
entity.RedirectURL = null;
}
entity.RedirectAutomatically =
invoice.RedirectAutomatically.GetValueOrDefault(storeBlob.RedirectAutomatically);
entity.Status = InvoiceStatus.New;
entity.SpeedPolicy = ParseSpeedPolicy(invoice.TransactionSpeed, store.SpeedPolicy);
HashSet <CurrencyPair> currencyPairsToFetch = new HashSet <CurrencyPair>();
var rules = storeBlob.GetRateRules(_NetworkProvider);
var excludeFilter = storeBlob.GetExcludedPaymentMethods(); // Here we can compose filters from other origin with PaymentFilter.Any()
if (invoice.SupportedTransactionCurrencies != null && invoice.SupportedTransactionCurrencies.Count != 0)
{
var supportedTransactionCurrencies = invoice.SupportedTransactionCurrencies
.Where(c => c.Value.Enabled)
.Select(c => PaymentMethodId.TryParse(c.Key, out var p) ? p : null)
.ToHashSet();
excludeFilter = PaymentFilter.Or(excludeFilter,
PaymentFilter.Where(p => !supportedTransactionCurrencies.Contains(p)));
}
foreach (var network in store.GetSupportedPaymentMethods(_NetworkProvider)
.Where(s => !excludeFilter.Match(s.PaymentId))
.Select(c => _NetworkProvider.GetNetwork(c.PaymentId.CryptoCode))
.Where(c => c != null))
{
currencyPairsToFetch.Add(new CurrencyPair(network.CryptoCode, invoice.Currency));
if (storeBlob.LightningMaxValue != null)
{
currencyPairsToFetch.Add(new CurrencyPair(network.CryptoCode, storeBlob.LightningMaxValue.Currency));
}
if (storeBlob.OnChainMinValue != null)
{
currencyPairsToFetch.Add(new CurrencyPair(network.CryptoCode, storeBlob.OnChainMinValue.Currency));
}
}
var rateRules = storeBlob.GetRateRules(_NetworkProvider);
var fetchingByCurrencyPair = _RateProvider.FetchRates(currencyPairsToFetch, rateRules, cancellationToken);
var fetchingAll = WhenAllFetched(logs, fetchingByCurrencyPair);
var supportedPaymentMethods = store.GetSupportedPaymentMethods(_NetworkProvider)
.Where(s => !excludeFilter.Match(s.PaymentId))
.Select(c =>
(Handler: (IPaymentMethodHandler)_ServiceProvider.GetService(typeof(IPaymentMethodHandler <>).MakeGenericType(c.GetType())),
SupportedPaymentMethod: c,
Network: _NetworkProvider.GetNetwork(c.PaymentId.CryptoCode)))
.Where(c => c.Network != null)
.Select(o =>
(SupportedPaymentMethod: o.SupportedPaymentMethod,
PaymentMethod: CreatePaymentMethodAsync(fetchingByCurrencyPair, o.Handler, o.SupportedPaymentMethod, o.Network, entity, store, logs)))
.ToList();
List <ISupportedPaymentMethod> supported = new List <ISupportedPaymentMethod>();
var paymentMethods = new PaymentMethodDictionary();
foreach (var o in supportedPaymentMethods)
{
var paymentMethod = await o.PaymentMethod;
if (paymentMethod == null)
{
continue;
}
supported.Add(o.SupportedPaymentMethod);
paymentMethods.Add(paymentMethod);
}
if (supported.Count == 0)
{
StringBuilder errors = new StringBuilder();
errors.AppendLine("Warning: No wallet has been linked to your BTCPay Store. See the following link for more information on how to connect your store and wallet. (https://docs.btcpayserver.org/btcpay-basics/gettingstarted#connecting-btcpay-store-to-your-wallet)");
foreach (var error in logs.ToList())
{
errors.AppendLine(error.ToString());
}
throw new BitpayHttpException(400, errors.ToString());
}
entity.SetSupportedPaymentMethods(supported);
entity.SetPaymentMethods(paymentMethods);
entity.PosData = invoice.PosData;
foreach (var app in await getAppsTaggingStore)
{
entity.InternalTags.Add(AppService.GetAppInternalTag(app.Id));
}
using (logs.Measure("Saving invoice"))
{
entity = await _InvoiceRepository.CreateInvoiceAsync(store.Id, entity);
}
_ = Task.Run(async() =>
{
try
{
await fetchingAll;
}
catch (AggregateException ex)
{
ex.Handle(e => { logs.Write($"Error while fetching rates {ex}"); return(true); });
}
await _InvoiceRepository.AddInvoiceLogs(entity.Id, logs);
});
_EventAggregator.Publish(new Events.InvoiceEvent(entity, 1001, InvoiceEvent.Created));
var resp = entity.EntityToDTO();
return(new DataWrapper <InvoiceResponse>(resp)
{
Facade = "pos/invoice"
});
}
private async Task <PaymentMethod> CreatePaymentMethodAsync(Dictionary <CurrencyPair, Task <RateResult> > fetchingByCurrencyPair, IPaymentMethodHandler handler, ISupportedPaymentMethod supportedPaymentMethod, BTCPayNetwork network, InvoiceEntity entity, StoreData store, InvoiceLogs logs)
{
try
{
var logPrefix = $"{handler.ToPrettyString(supportedPaymentMethod.PaymentId)}:";
var storeBlob = store.GetStoreBlob();
var preparePayment = handler.PreparePayment(supportedPaymentMethod, store, network);
var rate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, entity.ProductInformation.Currency)];
if (rate.BidAsk == null)
{
return(null);
}
PaymentMethod paymentMethod = new PaymentMethod();
paymentMethod.ParentEntity = entity;
paymentMethod.Network = network;
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
paymentMethod.Rate = rate.BidAsk.Bid;
paymentMethod.PreferOnion = this.Request.IsOnion();
using (logs.Measure($"{logPrefix} Payment method details creation"))
{
var paymentDetails = await handler.CreatePaymentMethodDetails(supportedPaymentMethod, paymentMethod, store, network, preparePayment);
paymentMethod.SetPaymentMethodDetails(paymentDetails);
}
Func <Money, Money, bool> compare = null;
CurrencyValue limitValue = null;
string errorMessage = null;
if (supportedPaymentMethod.PaymentId.PaymentType == PaymentTypes.LightningLike &&
storeBlob.LightningMaxValue != null)
{
compare = (a, b) => a > b;
limitValue = storeBlob.LightningMaxValue;
errorMessage = "The amount of the invoice is too high to be paid with lightning";
}
else if (supportedPaymentMethod.PaymentId.PaymentType == PaymentTypes.BTCLike &&
storeBlob.OnChainMinValue != null)
{
compare = (a, b) => a < b;
limitValue = storeBlob.OnChainMinValue;
errorMessage = "The amount of the invoice is too low to be paid on chain";
}
if (compare != null)
{
var limitValueRate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, limitValue.Currency)];
if (limitValueRate.BidAsk != null)
{
var limitValueCrypto = Money.Coins(limitValue.Value / limitValueRate.BidAsk.Bid);
if (compare(paymentMethod.Calculate().Due, limitValueCrypto))
{
logs.Write($"{logPrefix} {errorMessage}");
return(null);
}
}
}
///////////////
#pragma warning disable CS0618
if (paymentMethod.GetId().IsBTCOnChain)
{
entity.TxFee = paymentMethod.NextNetworkFee;
entity.Rate = paymentMethod.Rate;
entity.DepositAddress = paymentMethod.DepositAddress;
}
#pragma warning restore CS0618
return(paymentMethod);
}
catch (PaymentMethodUnavailableException ex)
{
logs.Write($"{supportedPaymentMethod.PaymentId.CryptoCode}: Payment method unavailable ({ex.Message})");
}
catch (Exception ex)
{
logs.Write($"{supportedPaymentMethod.PaymentId.CryptoCode}: Unexpected exception ({ex.ToString()})");
}
return(null);
}
private async Task <PaymentMethod?> CreatePaymentMethodAsync(Dictionary <CurrencyPair, Task <RateResult> > fetchingByCurrencyPair,
IPaymentMethodHandler handler, ISupportedPaymentMethod supportedPaymentMethod, BTCPayNetworkBase network, InvoiceEntity entity,
StoreData store, InvoiceLogs logs)
{
try
{
var logPrefix = $"{supportedPaymentMethod.PaymentId.ToPrettyString()}:";
var storeBlob = store.GetStoreBlob();
object?preparePayment;
if (storeBlob.LazyPaymentMethods)
{
preparePayment = null;
}
else
{
preparePayment = handler.PreparePayment(supportedPaymentMethod, store, network);
}
var rate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, entity.Currency)];
if (rate.BidAsk == null)
{
return(null);
}
var paymentMethod = new PaymentMethod
{
ParentEntity = entity,
Network = network,
Rate = rate.BidAsk.Bid,
PreferOnion = Uri.TryCreate(entity.ServerUrl, UriKind.Absolute, out var u) && u.DnsSafeHost.EndsWith(".onion", StringComparison.OrdinalIgnoreCase)
};
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
using (logs.Measure($"{logPrefix} Payment method details creation"))
{
var paymentDetails = await handler.CreatePaymentMethodDetails(logs, supportedPaymentMethod, paymentMethod, store, network, preparePayment);
paymentMethod.SetPaymentMethodDetails(paymentDetails);
}
var criteria = storeBlob.PaymentMethodCriteria?.Find(methodCriteria => methodCriteria.PaymentMethod == supportedPaymentMethod.PaymentId);
if (criteria?.Value != null && entity.Type != InvoiceType.TopUp)
{
var currentRateToCrypto =
await fetchingByCurrencyPair[new CurrencyPair(supportedPaymentMethod.PaymentId.CryptoCode, criteria.Value.Currency)];
if (currentRateToCrypto?.BidAsk != null)
{
var amount = paymentMethod.Calculate().Due.GetValue(network as BTCPayNetwork);
var limitValueCrypto = criteria.Value.Value / currentRateToCrypto.BidAsk.Bid;
if (amount < limitValueCrypto && criteria.Above)
{
logs.Write($"{logPrefix} invoice amount below accepted value for payment method", InvoiceEventData.EventSeverity.Error);
return(null);
}
if (amount > limitValueCrypto && !criteria.Above)
{
logs.Write($"{logPrefix} invoice amount above accepted value for payment method", InvoiceEventData.EventSeverity.Error);
return(null);
}
}
else
{
var suffix = currentRateToCrypto?.EvaluatedRule is string s ? $" ({s})" : string.Empty;
logs.Write($"{logPrefix} This payment method should be created only if the amount of this invoice is in proper range. However, we are unable to fetch the rate of those limits. {suffix}", InvoiceEventData.EventSeverity.Warning);
}
}
#pragma warning disable CS0618
if (paymentMethod.GetId().IsBTCOnChain)
{
entity.TxFee = paymentMethod.NextNetworkFee;
entity.Rate = paymentMethod.Rate;
entity.DepositAddress = paymentMethod.DepositAddress;
}
#pragma warning restore CS0618
return(paymentMethod);
}
catch (PaymentMethodUnavailableException ex)
{
logs.Write($"{supportedPaymentMethod.PaymentId.CryptoCode}: Payment method unavailable ({ex.Message})", InvoiceEventData.EventSeverity.Error);
}
catch (Exception ex)
{
logs.Write($"{supportedPaymentMethod.PaymentId.CryptoCode}: Unexpected exception ({ex})", InvoiceEventData.EventSeverity.Error);
}
return(null);
}
internal async Task <InvoiceEntity> CreateInvoiceCoreRaw(InvoiceEntity entity, StoreData store, IPaymentFilter?invoicePaymentMethodFilter, string[]?additionalSearchTerms = null, CancellationToken cancellationToken = default)
{
InvoiceLogs logs = new InvoiceLogs();
logs.Write("Creation of invoice starting", InvoiceEventData.EventSeverity.Info);
var storeBlob = store.GetStoreBlob();
if (string.IsNullOrEmpty(entity.Currency))
{
entity.Currency = storeBlob.DefaultCurrency;
}
entity.Currency = entity.Currency.Trim().ToUpperInvariant();
entity.Price = Math.Max(0.0m, entity.Price);
var currencyInfo = _CurrencyNameTable.GetNumberFormatInfo(entity.Currency, false);
if (currencyInfo != null)
{
entity.Price = entity.Price.RoundToSignificant(currencyInfo.CurrencyDecimalDigits);
}
if (entity.Metadata.TaxIncluded is decimal taxIncluded)
{
if (currencyInfo != null)
{
taxIncluded = taxIncluded.RoundToSignificant(currencyInfo.CurrencyDecimalDigits);
}
taxIncluded = Math.Max(0.0m, taxIncluded);
taxIncluded = Math.Min(taxIncluded, entity.Price);
entity.Metadata.TaxIncluded = taxIncluded;
}
var getAppsTaggingStore = _InvoiceRepository.GetAppsTaggingStore(store.Id);
if (entity.Metadata.BuyerEmail != null)
{
if (!EmailValidator.IsEmail(entity.Metadata.BuyerEmail))
{
throw new BitpayHttpException(400, "Invalid email");
}
entity.RefundMail = entity.Metadata.BuyerEmail;
}
entity.Status = InvoiceStatusLegacy.New;
HashSet <CurrencyPair> currencyPairsToFetch = new HashSet <CurrencyPair>();
var rules = storeBlob.GetRateRules(_NetworkProvider);
var excludeFilter = storeBlob.GetExcludedPaymentMethods(); // Here we can compose filters from other origin with PaymentFilter.Any()
if (invoicePaymentMethodFilter != null)
{
excludeFilter = PaymentFilter.Or(excludeFilter,
invoicePaymentMethodFilter);
}
foreach (var network in store.GetSupportedPaymentMethods(_NetworkProvider)
.Where(s => !excludeFilter.Match(s.PaymentId))
.Select(c => _NetworkProvider.GetNetwork <BTCPayNetworkBase>(c.PaymentId.CryptoCode))
.Where(c => c != null))
{
currencyPairsToFetch.Add(new CurrencyPair(network.CryptoCode, entity.Currency));
foreach (var paymentMethodCriteria in storeBlob.PaymentMethodCriteria)
{
if (paymentMethodCriteria.Value != null)
{
currencyPairsToFetch.Add(new CurrencyPair(network.CryptoCode, paymentMethodCriteria.Value.Currency));
}
}
}
var rateRules = storeBlob.GetRateRules(_NetworkProvider);
var fetchingByCurrencyPair = _RateProvider.FetchRates(currencyPairsToFetch, rateRules, cancellationToken);
var fetchingAll = WhenAllFetched(logs, fetchingByCurrencyPair);
List <ISupportedPaymentMethod> supported = new List <ISupportedPaymentMethod>();
var paymentMethods = new PaymentMethodDictionary();
bool noNeedForMethods = entity.Type != InvoiceType.TopUp && entity.Price == 0m;
if (!noNeedForMethods)
{
// This loop ends with .ToList so we are querying all payment methods at once
// instead of sequentially to improve response time
foreach (var o in store.GetSupportedPaymentMethods(_NetworkProvider)
.Where(s => !excludeFilter.Match(s.PaymentId) &&
_paymentMethodHandlerDictionary.Support(s.PaymentId))
.Select(c =>
(Handler: _paymentMethodHandlerDictionary[c.PaymentId],
SupportedPaymentMethod: c,
Network: _NetworkProvider.GetNetwork <BTCPayNetworkBase>(c.PaymentId.CryptoCode)))
.Where(c => c.Network != null)
.Select(o =>
(SupportedPaymentMethod: o.SupportedPaymentMethod,
PaymentMethod: CreatePaymentMethodAsync(fetchingByCurrencyPair, o.Handler,
o.SupportedPaymentMethod, o.Network, entity, store, logs)))
.ToList())
{
var paymentMethod = await o.PaymentMethod;
if (paymentMethod == null)
{
continue;
}
supported.Add(o.SupportedPaymentMethod);
paymentMethods.Add(paymentMethod);
}
if (supported.Count == 0)
{
StringBuilder errors = new StringBuilder();
if (!store.GetSupportedPaymentMethods(_NetworkProvider).Any())
{
errors.AppendLine(
"Warning: No wallet has been linked to your BTCPay Store. See the following link for more information on how to connect your store and wallet. (https://docs.btcpayserver.org/WalletSetup/)");
}
foreach (var error in logs.ToList())
{
errors.AppendLine(error.ToString());
}
throw new BitpayHttpException(400, errors.ToString());
}
}
entity.SetSupportedPaymentMethods(supported);
entity.SetPaymentMethods(paymentMethods);
foreach (var app in await getAppsTaggingStore)
{
entity.InternalTags.Add(AppService.GetAppInternalTag(app.Id));
}
using (logs.Measure("Saving invoice"))
{
entity = await _InvoiceRepository.CreateInvoiceAsync(store.Id, entity, additionalSearchTerms);
}
_ = Task.Run(async() =>
{
try
{
await fetchingAll;
}
catch (AggregateException ex)
{
ex.Handle(e => { logs.Write($"Error while fetching rates {ex}", InvoiceEventData.EventSeverity.Error); return(true); });
}
await _InvoiceRepository.AddInvoiceLogs(entity.Id, logs);
});
_EventAggregator.Publish(new Events.InvoiceEvent(entity, InvoiceEvent.Created));
return(entity);
}