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);
}
private async Task <PaymentMethod> CreatePaymentMethodAsync(IPaymentMethodHandler handler, ISupportedPaymentMethod supportedPaymentMethod, BTCPayNetwork network, InvoiceEntity entity, StoreBlob storeBlob)
{
var rate = await storeBlob.ApplyRateRules(network, _RateProviders.GetRateProvider(network, false)).GetRateAsync(entity.ProductInformation.Currency);
PaymentMethod paymentMethod = new PaymentMethod();
paymentMethod.ParentEntity = entity;
paymentMethod.Network = network;
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
paymentMethod.Rate = rate;
var paymentDetails = await handler.CreatePaymentMethodDetails(supportedPaymentMethod, paymentMethod, network);
if (storeBlob.NetworkFeeDisabled)
{
paymentDetails.SetNoTxFee();
}
paymentMethod.SetPaymentMethodDetails(paymentDetails);
// Check if Lightning Max value is exceeded
if (supportedPaymentMethod.PaymentId.PaymentType == PaymentTypes.LightningLike &&
storeBlob.LightningMaxValue != null)
{
var lightningMaxValue = storeBlob.LightningMaxValue;
var lightningMaxValueRate = 0.0m;
if (lightningMaxValue.Currency == entity.ProductInformation.Currency)
{
lightningMaxValueRate = paymentMethod.Rate;
}
else
{
lightningMaxValueRate = await storeBlob.ApplyRateRules(network, _RateProviders.GetRateProvider(network, false)).GetRateAsync(lightningMaxValue.Currency);
}
var lightningMaxValueCrypto = Money.Coins(lightningMaxValue.Value / lightningMaxValueRate);
if (paymentMethod.Calculate().Due > lightningMaxValueCrypto)
{
throw new PaymentMethodUnavailableException("Lightning max value exceeded");
}
}
///////////////
#pragma warning disable CS0618
if (paymentMethod.GetId().IsBTCOnChain)
{
entity.TxFee = paymentMethod.TxFee;
entity.Rate = paymentMethod.Rate;
entity.DepositAddress = paymentMethod.DepositAddress;
}
#pragma warning restore CS0618
return(paymentMethod);
}
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, BTCPayNetwork network, InvoiceEntity entity, StoreData store)
{
var storeBlob = store.GetStoreBlob();
var rate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, entity.ProductInformation.Currency)];
if (rate.Value == null)
{
return(null);
}
PaymentMethod paymentMethod = new PaymentMethod();
paymentMethod.ParentEntity = entity;
paymentMethod.Network = network;
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
paymentMethod.Rate = rate.Value.Value;
var paymentDetails = await handler.CreatePaymentMethodDetails(supportedPaymentMethod, paymentMethod, store, network);
if (storeBlob.NetworkFeeDisabled)
{
paymentDetails.SetNoTxFee();
}
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.Value.HasValue)
{
var limitValueCrypto = Money.Coins(limitValue.Value / limitValueRate.Value.Value);
if (compare(paymentMethod.Calculate().Due, limitValueCrypto))
{
throw new PaymentMethodUnavailableException(errorMessage);
}
}
}
///////////////
#pragma warning disable CS0618
if (paymentMethod.GetId().IsBTCOnChain)
{
entity.TxFee = paymentMethod.TxFee;
entity.Rate = paymentMethod.Rate;
entity.DepositAddress = paymentMethod.DepositAddress;
}
#pragma warning restore CS0618
return(paymentMethod);
}
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 = $"{supportedPaymentMethod.PaymentId.ToPrettyString()}:";
var storeBlob = store.GetStoreBlob();
var preparePayment = handler.PreparePayment(supportedPaymentMethod, store, network);
var rate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, entity.Currency)];
if (rate.BidAsk == null)
{
return(null);
}
PaymentMethod paymentMethod = new PaymentMethod();
paymentMethod.ParentEntity = entity;
paymentMethod.Network = network;
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
paymentMethod.Rate = rate.BidAsk.Bid;
paymentMethod.PreferOnion = Uri.TryCreate(entity.ServerUrl, UriKind.Absolute, out var u) && u.DnsSafeHost.EndsWith(".onion", StringComparison.OrdinalIgnoreCase);
using (logs.Measure($"{logPrefix} Payment method details creation"))
{
var paymentDetails = await handler.CreatePaymentMethodDetails(logs, supportedPaymentMethod, paymentMethod, store, network, preparePayment);
paymentMethod.SetPaymentMethodDetails(paymentDetails);
}
var criteria = store.GetPaymentMethodCriteria(_NetworkProvider, storeBlob)?.Find(methodCriteria => methodCriteria.PaymentMethod == supportedPaymentMethod.PaymentId);
if (criteria?.Value != null)
{
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);
}
}
}
#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.ToString()})", InvoiceEventData.EventSeverity.Error);
}
return(null);
}
internal async Task <DataWrapper <InvoiceResponse> > CreateInvoiceCore(Invoice invoice, StoreData store, string serverUrl)
{
var supportedPaymentMethods = store.GetSupportedPaymentMethods(_NetworkProvider)
.Select(c =>
(Handler: (IPaymentMethodHandler)_ServiceProvider.GetService(typeof(IPaymentMethodHandler <>).MakeGenericType(c.GetType())),
SupportedPaymentMethod: c,
Network: _NetworkProvider.GetNetwork(c.PaymentId.CryptoCode),
IsAvailable: Task.FromResult(false)))
.Where(c => c.Network != null)
.Select(c =>
{
c.IsAvailable = c.Handler.IsAvailable(c.SupportedPaymentMethod, c.Network);
return(c);
})
.ToList();
foreach (var supportedPaymentMethod in supportedPaymentMethods.ToList())
{
if (!await supportedPaymentMethod.IsAvailable)
{
supportedPaymentMethods.Remove(supportedPaymentMethod);
}
}
if (supportedPaymentMethods.Count == 0)
{
throw new BitpayHttpException(400, "No derivation strategy are available now for this store");
}
var entity = new InvoiceEntity
{
InvoiceTime = DateTimeOffset.UtcNow
};
entity.SetSupportedPaymentMethods(supportedPaymentMethods.Select(s => s.SupportedPaymentMethod));
var storeBlob = store.GetStoreBlob();
Uri notificationUri = Uri.IsWellFormedUriString(invoice.NotificationURL, UriKind.Absolute) ? new Uri(invoice.NotificationURL, UriKind.Absolute) : null;
if (notificationUri == null || (notificationUri.Scheme != "http" && notificationUri.Scheme != "https")) //TODO: Filer non routable addresses ?
{
notificationUri = null;
}
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;
entity.NotificationURL = notificationUri?.AbsoluteUri;
entity.BuyerInformation = Map <Invoice, BuyerInformation>(invoice);
//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;
}
entity.ProductInformation = Map <Invoice, ProductInformation>(invoice);
entity.RedirectURL = invoice.RedirectURL ?? store.StoreWebsite;
entity.Status = "new";
entity.SpeedPolicy = ParseSpeedPolicy(invoice.TransactionSpeed, store.SpeedPolicy);
var methods = supportedPaymentMethods
.Select(async o =>
{
var rate = await storeBlob.ApplyRateRules(o.Network, _RateProviders.GetRateProvider(o.Network, false)).GetRateAsync(invoice.Currency);
PaymentMethod paymentMethod = new PaymentMethod();
paymentMethod.ParentEntity = entity;
paymentMethod.SetId(o.SupportedPaymentMethod.PaymentId);
paymentMethod.Rate = rate;
var paymentDetails = await o.Handler.CreatePaymentMethodDetails(o.SupportedPaymentMethod, paymentMethod, o.Network);
if (storeBlob.NetworkFeeDisabled)
{
paymentDetails.SetNoTxFee();
}
paymentMethod.SetPaymentMethodDetails(paymentDetails);
#pragma warning disable CS0618
if (paymentMethod.GetId().IsBTCOnChain)
{
entity.TxFee = paymentMethod.TxFee;
entity.Rate = paymentMethod.Rate;
entity.DepositAddress = paymentMethod.DepositAddress;
}
#pragma warning restore CS0618
return(paymentMethod);
});
var paymentMethods = new PaymentMethodDictionary();
foreach (var method in methods)
{
paymentMethods.Add(await method);
}
#pragma warning disable CS0618
// Legacy Bitpay clients expect information for BTC information, even if the store do not support it
var legacyBTCisSet = paymentMethods.Any(p => p.GetId().IsBTCOnChain);
if (!legacyBTCisSet && _NetworkProvider.BTC != null)
{
var btc = _NetworkProvider.BTC;
var feeProvider = ((IFeeProviderFactory)_ServiceProvider.GetService(typeof(IFeeProviderFactory))).CreateFeeProvider(btc);
var rateProvider = storeBlob.ApplyRateRules(btc, _RateProviders.GetRateProvider(btc, false));
if (feeProvider != null && rateProvider != null)
{
var gettingFee = feeProvider.GetFeeRateAsync();
var gettingRate = rateProvider.GetRateAsync(invoice.Currency);
entity.TxFee = GetTxFee(storeBlob, await gettingFee);
entity.Rate = await gettingRate;
}
#pragma warning restore CS0618
}
entity.SetPaymentMethods(paymentMethods);
entity.PosData = invoice.PosData;
entity = await _InvoiceRepository.CreateInvoiceAsync(store.Id, entity, _NetworkProvider);
_EventAggregator.Publish(new Events.InvoiceEvent(entity, 1001, "invoice_created"));
var resp = entity.EntityToDTO(_NetworkProvider);
return(new DataWrapper <InvoiceResponse>(resp)
{
Facade = "pos/invoice"
});
}
