btcpayserver/BTCPayServer/Controllers/UIInvoiceController.cs
Andrew Camilleri 2f5f3e1b51
Do not enable receipts for payment requests (#4342)
Payment requests have a receipt-ish style by default. Receipts for each individual invoice of a payment request can be quite confusing as individually they do not prove the pay request was settled.
2022-11-25 11:04:34 +09:00

533 lines
28 KiB
C#

#nullable enable
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using BTCPayServer.Abstractions.Extensions;
using BTCPayServer.Client.Models;
using BTCPayServer.Data;
using BTCPayServer.Events;
using BTCPayServer.HostedServices;
using BTCPayServer.Logging;
using BTCPayServer.Models;
using BTCPayServer.Models.PaymentRequestViewModels;
using BTCPayServer.Payments;
using BTCPayServer.Rating;
using BTCPayServer.Security;
using BTCPayServer.Services;
using BTCPayServer.Services.Apps;
using BTCPayServer.Services.Invoices;
using BTCPayServer.Services.PaymentRequests;
using BTCPayServer.Services.Rates;
using BTCPayServer.Services.Stores;
using BTCPayServer.Validation;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;
using NBitpayClient;
using BitpayCreateInvoiceRequest = BTCPayServer.Models.BitpayCreateInvoiceRequest;
using StoreData = BTCPayServer.Data.StoreData;
namespace BTCPayServer.Controllers
{
[Filters.BitpayAPIConstraint(false)]
public partial class UIInvoiceController : Controller
{
readonly InvoiceRepository _InvoiceRepository;
readonly RateFetcher _RateProvider;
readonly StoreRepository _StoreRepository;
readonly UserManager<ApplicationUser> _UserManager;
private readonly CurrencyNameTable _CurrencyNameTable;
readonly EventAggregator _EventAggregator;
readonly BTCPayNetworkProvider _NetworkProvider;
private readonly PaymentMethodHandlerDictionary _paymentMethodHandlerDictionary;
private readonly ApplicationDbContextFactory _dbContextFactory;
private readonly PullPaymentHostedService _paymentHostedService;
private readonly LanguageService _languageService;
private readonly ExplorerClientProvider _ExplorerClients;
private readonly UIWalletsController _walletsController;
private readonly LinkGenerator _linkGenerator;
public WebhookSender WebhookNotificationManager { get; }
public UIInvoiceController(
InvoiceRepository invoiceRepository,
CurrencyNameTable currencyNameTable,
UserManager<ApplicationUser> userManager,
RateFetcher rateProvider,
StoreRepository storeRepository,
EventAggregator eventAggregator,
ContentSecurityPolicies csp,
BTCPayNetworkProvider networkProvider,
PaymentMethodHandlerDictionary paymentMethodHandlerDictionary,
ApplicationDbContextFactory dbContextFactory,
PullPaymentHostedService paymentHostedService,
WebhookSender webhookNotificationManager,
LanguageService languageService,
ExplorerClientProvider explorerClients,
UIWalletsController walletsController,
LinkGenerator linkGenerator)
{
_CurrencyNameTable = currencyNameTable ?? throw new ArgumentNullException(nameof(currencyNameTable));
_StoreRepository = storeRepository ?? throw new ArgumentNullException(nameof(storeRepository));
_InvoiceRepository = invoiceRepository ?? throw new ArgumentNullException(nameof(invoiceRepository));
_RateProvider = rateProvider ?? throw new ArgumentNullException(nameof(rateProvider));
_UserManager = userManager;
_EventAggregator = eventAggregator;
_NetworkProvider = networkProvider;
_paymentMethodHandlerDictionary = paymentMethodHandlerDictionary;
_dbContextFactory = dbContextFactory;
_paymentHostedService = paymentHostedService;
WebhookNotificationManager = webhookNotificationManager;
_languageService = languageService;
this._ExplorerClients = explorerClients;
_walletsController = walletsController;
_linkGenerator = linkGenerator;
}
internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(BitpayCreateInvoiceRequest invoice,
StoreData store, string serverUrl, List<string>? additionalTags = null,
CancellationToken cancellationToken = default, Action<InvoiceEntity>? entityManipulator = null)
{
var entity = await CreateInvoiceCoreRaw(invoice, store, serverUrl, additionalTags, cancellationToken, entityManipulator);
var resp = entity.EntityToDTO();
return new DataWrapper<InvoiceResponse>(resp) { Facade = "pos/invoice" };
}
internal async Task<InvoiceEntity> CreateInvoiceCoreRaw(BitpayCreateInvoiceRequest invoice, StoreData store, string serverUrl, List<string>? additionalTags = null, CancellationToken cancellationToken = default, Action<InvoiceEntity>? entityManipulator = null)
{
var storeBlob = store.GetStoreBlob();
var entity = _InvoiceRepository.CreateNewInvoice();
entity.ExpirationTime = invoice.ExpirationTime is DateTimeOffset v ? v : entity.InvoiceTime + storeBlob.InvoiceExpiration;
entity.MonitoringExpiration = entity.ExpirationTime + storeBlob.MonitoringExpiration;
if (entity.ExpirationTime - TimeSpan.FromSeconds(30.0) < entity.InvoiceTime)
{
throw new BitpayHttpException(400, "The expirationTime is set too soon");
}
entity.Metadata.OrderId = invoice.OrderId;
entity.Metadata.PosData = invoice.PosData;
entity.ServerUrl = serverUrl;
entity.FullNotifications = invoice.FullNotifications || invoice.ExtendedNotifications;
entity.ExtendedNotifications = invoice.ExtendedNotifications;
entity.NotificationURLTemplate = invoice.NotificationURL;
entity.NotificationEmail = invoice.NotificationEmail;
if (additionalTags != null)
entity.InternalTags.AddRange(additionalTags);
FillBuyerInfo(invoice, entity);
var taxIncluded = invoice.TaxIncluded.HasValue ? invoice.TaxIncluded.Value : 0m;
var price = invoice.Price;
entity.Metadata.ItemCode = invoice.ItemCode;
entity.Metadata.ItemDesc = invoice.ItemDesc;
entity.Metadata.Physical = invoice.Physical;
entity.Metadata.TaxIncluded = invoice.TaxIncluded;
entity.Currency = invoice.Currency;
if (price is decimal vv)
{
entity.Price = vv;
entity.Type = InvoiceType.Standard;
}
else
{
entity.Price = 0m;
entity.Type = InvoiceType.TopUp;
}
entity.RedirectURLTemplate = invoice.RedirectURL ?? store.StoreWebsite;
entity.RedirectAutomatically =
invoice.RedirectAutomatically.GetValueOrDefault(storeBlob.RedirectAutomatically);
entity.RequiresRefundEmail = invoice.RequiresRefundEmail;
entity.SpeedPolicy = ParseSpeedPolicy(invoice.TransactionSpeed, store.SpeedPolicy);
IPaymentFilter? excludeFilter = null;
if (invoice.PaymentCurrencies?.Any() is true)
{
invoice.SupportedTransactionCurrencies ??=
new Dictionary<string, InvoiceSupportedTransactionCurrency>();
foreach (string paymentCurrency in invoice.PaymentCurrencies)
{
invoice.SupportedTransactionCurrencies.TryAdd(paymentCurrency,
new InvoiceSupportedTransactionCurrency() { Enabled = true });
}
}
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)
.Where(c => c != null)
.ToHashSet();
excludeFilter = PaymentFilter.Where(p => !supportedTransactionCurrencies.Contains(p));
}
entity.PaymentTolerance = storeBlob.PaymentTolerance;
entity.DefaultPaymentMethod = invoice.DefaultPaymentMethod;
entity.RequiresRefundEmail = invoice.RequiresRefundEmail;
return await CreateInvoiceCoreRaw(entity, store, excludeFilter, null, cancellationToken, entityManipulator);
}
internal async Task<InvoiceEntity> CreatePaymentRequestInvoice(ViewPaymentRequestViewModel pr, decimal? amount, StoreData storeData, HttpRequest request, CancellationToken cancellationToken)
{
if (pr.AllowCustomPaymentAmounts && amount != null)
amount = Math.Min(pr.AmountDue, amount.Value);
else
amount = pr.AmountDue;
var redirectUrl = _linkGenerator.PaymentRequestLink(pr.Id, request.Scheme, request.Host, request.PathBase);
var invoiceMetadata =
new InvoiceMetadata
{
OrderId = PaymentRequestRepository.GetOrderIdForPaymentRequest(pr.Id),
PaymentRequestId = pr.Id,
BuyerEmail = pr.Email
};
var invoiceRequest =
new CreateInvoiceRequest
{
Metadata = invoiceMetadata.ToJObject(),
Currency = pr.Currency,
Amount = amount,
Checkout = { RedirectURL = redirectUrl },
Receipt = new InvoiceDataBase.ReceiptOptions { Enabled = false }
};
var additionalTags = new List<string> { PaymentRequestRepository.GetInternalTag(pr.Id) };
return await CreateInvoiceCoreRaw(invoiceRequest, storeData, request.GetAbsoluteRoot(), additionalTags, cancellationToken);
}
internal async Task<InvoiceEntity> CreateInvoiceCoreRaw(CreateInvoiceRequest invoice, StoreData store, string serverUrl, List<string>? additionalTags = null, CancellationToken cancellationToken = default, Action<InvoiceEntity>? entityManipulator = null)
{
var storeBlob = store.GetStoreBlob();
var entity = _InvoiceRepository.CreateNewInvoice();
entity.ServerUrl = serverUrl;
entity.ExpirationTime = entity.InvoiceTime + (invoice.Checkout.Expiration ?? storeBlob.InvoiceExpiration);
entity.MonitoringExpiration = entity.ExpirationTime + (invoice.Checkout.Monitoring ?? storeBlob.MonitoringExpiration);
entity.ReceiptOptions = invoice.Receipt ?? new InvoiceDataBase.ReceiptOptions();
if (invoice.Metadata != null)
entity.Metadata = InvoiceMetadata.FromJObject(invoice.Metadata);
invoice.Checkout ??= new CreateInvoiceRequest.CheckoutOptions();
entity.Currency = invoice.Currency;
if (invoice.Amount is decimal v)
{
entity.Price = v;
entity.Type = InvoiceType.Standard;
}
else
{
entity.Price = 0.0m;
entity.Type = InvoiceType.TopUp;
}
entity.SpeedPolicy = invoice.Checkout.SpeedPolicy ?? store.SpeedPolicy;
entity.DefaultLanguage = invoice.Checkout.DefaultLanguage;
entity.DefaultPaymentMethod = invoice.Checkout.DefaultPaymentMethod;
entity.RedirectAutomatically = invoice.Checkout.RedirectAutomatically ?? storeBlob.RedirectAutomatically;
entity.CheckoutType = invoice.Checkout.CheckoutType;
entity.RequiresRefundEmail = invoice.Checkout.RequiresRefundEmail;
IPaymentFilter? excludeFilter = null;
if (invoice.Checkout.PaymentMethods != null)
{
var supportedTransactionCurrencies = invoice.Checkout.PaymentMethods
.Select(c => PaymentMethodId.TryParse(c, out var p) ? p : null)
.ToHashSet();
excludeFilter = PaymentFilter.Where(p => !supportedTransactionCurrencies.Contains(p));
}
entity.PaymentTolerance = invoice.Checkout.PaymentTolerance ?? storeBlob.PaymentTolerance;
entity.RedirectURLTemplate = invoice.Checkout.RedirectURL?.Trim();
entity.RequiresRefundEmail = invoice.Checkout.RequiresRefundEmail;
if (additionalTags != null)
entity.InternalTags.AddRange(additionalTags);
return await CreateInvoiceCoreRaw(entity, store, excludeFilter, invoice.AdditionalSearchTerms, cancellationToken, entityManipulator);
}
internal async Task<InvoiceEntity> CreateInvoiceCoreRaw(InvoiceEntity entity, StoreData store, IPaymentFilter? invoicePaymentMethodFilter, string[]? additionalSearchTerms = null, CancellationToken cancellationToken = default, Action<InvoiceEntity>? entityManipulator = null)
{
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 (!MailboxAddressValidator.IsMailboxAddress(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
var x1 = 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).ToList();
var pmis = x1.Select(tuple => tuple.SupportedPaymentMethod.PaymentId).ToHashSet();
foreach (var o in x1
.Select(o =>
(SupportedPaymentMethod: o.SupportedPaymentMethod,
PaymentMethod: CreatePaymentMethodAsync(fetchingByCurrencyPair, o.Handler,
o.SupportedPaymentMethod, o.Network, entity, store, logs, pmis)))
.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/)");
else
errors.AppendLine("Warning: You have payment methods configured but none of them match any of the requested payment methods or the rate is not available. See logs below:");
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));
}
if (entityManipulator != null)
{
entityManipulator.Invoke(entity);
}
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($"Error while fetching rates {ex}", InvoiceEventData.EventSeverity.Error); return true; });
}
await _InvoiceRepository.AddInvoiceLogs(entity.Id, logs);
});
_EventAggregator.Publish(new Events.InvoiceEvent(entity, InvoiceEvent.Created));
return entity;
}
private Task WhenAllFetched(InvoiceLogs logs, Dictionary<CurrencyPair, Task<RateResult>> fetchingByCurrencyPair)
{
return Task.WhenAll(fetchingByCurrencyPair.Select(async pair =>
{
var rateResult = await pair.Value;
logs.Write($"{pair.Key}: The rating rule is {rateResult.Rule}", InvoiceEventData.EventSeverity.Info);
logs.Write($"{pair.Key}: The evaluated rating rule is {rateResult.EvaluatedRule}", InvoiceEventData.EventSeverity.Info);
if (rateResult.Errors.Count != 0)
{
var allRateRuleErrors = string.Join(", ", rateResult.Errors.ToArray());
logs.Write($"{pair.Key}: Rate rule error ({allRateRuleErrors})", InvoiceEventData.EventSeverity.Error);
}
foreach (var ex in rateResult.ExchangeExceptions)
{
logs.Write($"{pair.Key}: Exception reaching exchange {ex.ExchangeName} ({ex.Exception.Message})", InvoiceEventData.EventSeverity.Error);
}
}).ToArray());
}
private async Task<PaymentMethod?> CreatePaymentMethodAsync(
Dictionary<CurrencyPair, Task<RateResult>> fetchingByCurrencyPair,
IPaymentMethodHandler handler, ISupportedPaymentMethod supportedPaymentMethod, BTCPayNetworkBase network,
InvoiceEntity entity,
StoreData store, InvoiceLogs logs,
HashSet<PaymentMethodId> invoicePaymentMethods)
{
try
{
var logPrefix = $"{supportedPaymentMethod.PaymentId.ToPrettyString()}:";
var storeBlob = store.GetStoreBlob();
// Checkout v2 does not show a payment method switch for Bitcoin-only + BIP21, so exclude that case
var preparePayment = storeBlob.LazyPaymentMethods && !storeBlob.OnChainWithLnInvoiceFallback
? null
: handler.PreparePayment(supportedPaymentMethod, store, network);
var rate = await fetchingByCurrencyPair[new CurrencyPair(network.CryptoCode, entity.Currency)];
if (rate.BidAsk == null)
{
return null;
}
var paymentMethod = new PaymentMethod
{
ParentEntity = entity,
Network = network,
Rate = rate.BidAsk.Bid,
PreferOnion = Uri.TryCreate(entity.ServerUrl, UriKind.Absolute, out var u) && u.DnsSafeHost.EndsWith(".onion", StringComparison.OrdinalIgnoreCase)
};
paymentMethod.SetId(supportedPaymentMethod.PaymentId);
using (logs.Measure($"{logPrefix} Payment method details creation"))
{
var paymentDetails = await handler.CreatePaymentMethodDetails(logs, supportedPaymentMethod, paymentMethod, store, network, preparePayment, invoicePaymentMethods);
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;
}
private SpeedPolicy ParseSpeedPolicy(string transactionSpeed, SpeedPolicy defaultPolicy)
{
if (transactionSpeed == null)
return defaultPolicy;
var mappings = new Dictionary<string, SpeedPolicy>();
mappings.Add("low", SpeedPolicy.LowSpeed);
mappings.Add("low-medium", SpeedPolicy.LowMediumSpeed);
mappings.Add("medium", SpeedPolicy.MediumSpeed);
mappings.Add("high", SpeedPolicy.HighSpeed);
if (!mappings.TryGetValue(transactionSpeed, out SpeedPolicy policy))
policy = defaultPolicy;
return policy;
}
private void FillBuyerInfo(BitpayCreateInvoiceRequest req, InvoiceEntity invoiceEntity)
{
var buyerInformation = invoiceEntity.Metadata;
buyerInformation.BuyerAddress1 = req.BuyerAddress1;
buyerInformation.BuyerAddress2 = req.BuyerAddress2;
buyerInformation.BuyerCity = req.BuyerCity;
buyerInformation.BuyerCountry = req.BuyerCountry;
buyerInformation.BuyerEmail = req.BuyerEmail;
buyerInformation.BuyerName = req.BuyerName;
buyerInformation.BuyerPhone = req.BuyerPhone;
buyerInformation.BuyerState = req.BuyerState;
buyerInformation.BuyerZip = req.BuyerZip;
var buyer = req.Buyer;
if (buyer == null)
return;
buyerInformation.BuyerAddress1 ??= buyer.Address1;
buyerInformation.BuyerAddress2 ??= buyer.Address2;
buyerInformation.BuyerCity ??= buyer.City;
buyerInformation.BuyerCountry ??= buyer.country;
buyerInformation.BuyerEmail ??= buyer.email;
buyerInformation.BuyerName ??= buyer.Name;
buyerInformation.BuyerPhone ??= buyer.phone;
buyerInformation.BuyerState ??= buyer.State;
buyerInformation.BuyerZip ??= buyer.zip;
}
}
}