fix remaining edgecase with payment request pay endpoint (#619)

BTCPayServer.Tests/CrowdfundTests.cs

@@ -177,6 +177,7 @@ namespace BTCPayServer.Tests
                 var user = tester.NewAccount();
                 user.GrantAccess();
                 user.RegisterDerivationScheme("BTC");
+                user.ModifyStore(s => s.NetworkFeeMode = NetworkFeeMode.Never);
                 var apps = user.GetController<AppsController>();
                 var vm = Assert.IsType<CreateAppViewModel>(Assert.IsType<ViewResult>(apps.CreateApp().Result).Model);
                 vm.Name = "test";

BTCPayServer.Tests/PaymentRequestTests.cs

@@ -0,0 +1,157 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Controllers;
+using BTCPayServer.Data;
+using BTCPayServer.Events;
+using BTCPayServer.Models;
+using BTCPayServer.Models.AppViewModels;
+using BTCPayServer.Models.PaymentRequestViewModels;
+using BTCPayServer.Models.StoreViewModels;
+using BTCPayServer.Payments.Changelly;
+using BTCPayServer.Payments.Changelly.Models;
+using BTCPayServer.Services.Apps;
+using BTCPayServer.Services.Invoices;
+using BTCPayServer.Services.Rates;
+using BTCPayServer.Services.Stores;
+using BTCPayServer.Tests.Logging;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using NBitcoin;
+using NBitpayClient;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace BTCPayServer.Tests
+{
+    public class PaymentRequestTests
+    {
+        public PaymentRequestTests(ITestOutputHelper helper)
+        {
+            Logs.Tester = new XUnitLog(helper) {Name = "Tests"};
+            Logs.LogProvider = new XUnitLogProvider(helper);
+        }
+
+        [Fact]
+        [Trait("Integration", "Integration")]
+        public void CanCreateViewUpdateAndDeletePaymentRequest()
+        {
+            using (var tester = ServerTester.Create())
+            {
+                tester.Start();
+                var user = tester.NewAccount();
+                user.GrantAccess();
+                user.RegisterDerivationScheme("BTC");
+
+                var user2 = tester.NewAccount();
+                user2.GrantAccess();
+
+                var paymentRequestController = user.GetController<PaymentRequestController>();
+                var guestpaymentRequestController = user2.GetController<PaymentRequestController>();
+
+                var request = new UpdatePaymentRequestViewModel()
+                {
+                    Title = "original juice",
+                    Currency = "BTC",
+                    Amount = 1,
+                    StoreId = user.StoreId,
+                    Description = "description"
+                };
+                var id = (Assert
+                    .IsType<RedirectToActionResult>(paymentRequestController.EditPaymentRequest(null, request).Result).RouteValues.Values.First().ToString());
+
+                
+
+                //permission guard for guests editing 
+                Assert
+                    .IsType<NotFoundResult>(guestpaymentRequestController.EditPaymentRequest(id).Result);
+
+                request.Title = "update";
+               Assert.IsType<RedirectToActionResult>(paymentRequestController.EditPaymentRequest(id, request).Result);
+               
+               Assert.Equal(request.Title, Assert.IsType<ViewPaymentRequestViewModel>( Assert.IsType<ViewResult>(paymentRequestController.ViewPaymentRequest(id).Result).Model).Title);
+
+                Assert.False(string.IsNullOrEmpty(id));
+
+                Assert.IsType<ViewPaymentRequestViewModel>(Assert
+                    .IsType<ViewResult>(paymentRequestController.ViewPaymentRequest(id).Result).Model);
+
+                //Delete
+
+                Assert.IsType<ConfirmModel>(Assert
+                    .IsType<ViewResult>(paymentRequestController.RemovePaymentRequestPrompt(id).Result).Model);
+
+
+                Assert.IsType<RedirectToActionResult>(paymentRequestController.RemovePaymentRequest(id).Result);
+
+                Assert
+                    .IsType<NotFoundResult>(paymentRequestController.ViewPaymentRequest(id).Result);
+            }
+        }
+
+        [Fact]
+        [Trait("Integration", "Integration")]
+        public async Task CanPayPaymentRequestWhenPossible()
+        {
+            using (var tester = ServerTester.Create())
+            {
+                tester.Start();
+                var user = tester.NewAccount();
+                user.GrantAccess();
+                user.RegisterDerivationScheme("BTC");
+
+                var paymentRequestController = user.GetController<PaymentRequestController>();
+
+                Assert.IsType<NotFoundResult>(await paymentRequestController.PayPaymentRequest(Guid.NewGuid().ToString()));
+
+
+                var request = new UpdatePaymentRequestViewModel()
+                {
+                    Title = "original juice",
+                    Currency = "BTC",
+                    Amount = 1,
+                    StoreId = user.StoreId,
+                    Description = "description"
+                };
+                var response = Assert
+                    .IsType<RedirectToActionResult>(paymentRequestController.EditPaymentRequest(null, request).Result)
+                    .RouteValues.First();
+
+                var invoiceId = Assert
+                    .IsType<OkObjectResult>(await paymentRequestController.PayPaymentRequest(response.Value.ToString(), false)).Value
+                    .ToString();
+
+                var actionResult = Assert
+                    .IsType<RedirectToActionResult>(await paymentRequestController.PayPaymentRequest(response.Value.ToString()));
+
+                Assert.Equal("Checkout", actionResult.ActionName);
+                Assert.Equal("Invoice", actionResult.ControllerName);
+                Assert.Contains(actionResult.RouteValues, pair => pair.Key == "Id" && pair.Value.ToString() == invoiceId);
+
+                var invoice = user.BitPay.GetInvoice(invoiceId, Facade.Merchant);
+                Assert.Equal(1, invoice.Price);
+                
+                request = new UpdatePaymentRequestViewModel()
+                {
+                    Title = "original juice with expiry",
+                    Currency = "BTC",
+                    Amount = 1,
+                    ExpiryDate = DateTime.Today.Subtract( TimeSpan.FromDays(2)),
+                    StoreId = user.StoreId,
+                    Description = "description"
+                };
+                
+                response = Assert
+                    .IsType<RedirectToActionResult>(paymentRequestController.EditPaymentRequest(null, request).Result)
+                    .RouteValues.First();
+
+                Assert
+                    .IsType<BadRequestObjectResult>(await paymentRequestController.PayPaymentRequest(response.Value.ToString(), false));               
+                
+            }
+        }
+    }
+}

BTCPayServer.Tests/UnitTest1.cs

@@ -1298,6 +1298,25 @@ namespace BTCPayServer.Tests
                 Assert.True(invoice.SupportedTransactionCurrencies["LTC"].Enabled);
                 Assert.True(invoice.PaymentSubtotals.ContainsKey("LTC"));
                 Assert.True(invoice.PaymentTotals.ContainsKey("LTC"));
+
+
+                // Check if we can disable LTC
+                invoice = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 5000.0m,
+                    Currency = "USD",
+                    PosData = "posData",
+                    OrderId = "orderId",
+                    ItemDesc = "Some description",
+                    FullNotifications = true,
+                    SupportedTransactionCurrencies = new Dictionary<string, InvoiceSupportedTransactionCurrency>()
+                    {
+                        { "BTC", new InvoiceSupportedTransactionCurrency() { Enabled = true } }
+                    }
+                }, Facade.Merchant);
+
+                Assert.Single(invoice.CryptoInfo.Where(c => c.CryptoCode == "BTC"));
+                Assert.Empty(invoice.CryptoInfo.Where(c => c.CryptoCode == "LTC"));
             }
         }
 
@@ -1978,31 +1997,48 @@ donation:
                 var invoice1 = user.BitPay.CreateInvoice(new Invoice()
                 {
                     Price = 0.000000012m,
-                    Currency = "BTC",
-                    PosData = "posData",
-                    OrderId = "orderId",
-                    ItemDesc = "Some description",
+                    Currency = "USD",
                     FullNotifications = true
                 }, Facade.Merchant);
                 var invoice2 = user.BitPay.CreateInvoice(new Invoice()
                 {
                     Price = 0.000000019m,
-                    Currency = "BTC",
-                    PosData = "posData",
-                    OrderId = "orderId",
-                    ItemDesc = "Some description",
+                    Currency = "USD"
+                }, Facade.Merchant);
+                Assert.Equal(0.000000012m, invoice1.Price);
+                Assert.Equal(0.000000019m, invoice2.Price);
+
+                // Should round up to 1 because 0.000000019 is unsignificant
+                var invoice3 = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 1.000000019m,
+                    Currency = "USD",
                     FullNotifications = true
                 }, Facade.Merchant);
-                Assert.Equal(0.00000001m, invoice1.Price);
-                Assert.Equal(0.00000002m, invoice2.Price);
+                Assert.Equal(1m, invoice3.Price);
+
+                // Should not round up at 8 digit because the 9th is insignificant
+                var invoice4 = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 1.000000019m,
+                    Currency = "BTC",
+                    FullNotifications = true
+                }, Facade.Merchant);
+                Assert.Equal(1.00000002m, invoice4.Price);
+
+                // But not if the 9th is insignificant
+                invoice4 = user.BitPay.CreateInvoice(new Invoice()
+                {
+                    Price = 0.000000019m,
+                    Currency = "BTC",
+                    FullNotifications = true
+                }, Facade.Merchant);
+                Assert.Equal(0.000000019m, invoice4.Price);
 
                 var invoice = user.BitPay.CreateInvoice(new Invoice()
                 {
                     Price = -0.1m,
                     Currency = "BTC",
-                    PosData = "posData",
-                    OrderId = "orderId",
-                    ItemDesc = "Some description",
                     FullNotifications = true
                 }, Facade.Merchant);
                 Assert.Equal(0.0m, invoice.Price);

BTCPayServer/BTCPayServer.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp2.1</TargetFramework>
-		<Version>1.0.3.55</Version>
+		<Version>1.0.3.69</Version>
     <NoWarn>NU1701,CA1816,CA1308,CA1810,CA2208</NoWarn>
   </PropertyGroup>
   <PropertyGroup>
@@ -33,7 +33,7 @@
     <EmbeddedResource Include="Currencies.txt" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="BTCPayServer.Lightning.All" Version="1.1.0.5" />
+    <PackageReference Include="BTCPayServer.Lightning.All" Version="1.1.0.9" />
     <PackageReference Include="BuildBundlerMinifier" Version="2.7.385" />
     <PackageReference Include="DigitalRuby.ExchangeSharp" Version="0.5.3" />
     <PackageReference Include="HtmlSanitizer" Version="4.0.199" />
@@ -139,7 +139,7 @@
     <Content Update="Views\Server\LightningChargeServices.cshtml">
       <Pack>$(IncludeRazorContentInPack)</Pack>
     </Content>
-    <Content Update="Views\Server\SparkServices.cshtml">
+    <Content Update="Views\Server\LightningWalletServices.cshtml">
       <Pack>$(IncludeRazorContentInPack)</Pack>
     </Content>
     <Content Update="Views\Server\SSHService.cshtml">

BTCPayServer/Configuration/BTCPayServerOptions.cs

@@ -109,18 +109,22 @@ namespace BTCPayServer.Configuration
                     {
                         if (!LightningConnectionString.TryParse(lightning, true, out var connectionString, out var error))
                         {
-                            throw new ConfigException($"Invalid setting {net.CryptoCode}.lightning, " + Environment.NewLine +
+                            Logs.Configuration.LogWarning($"Invalid setting {net.CryptoCode}.lightning, " + Environment.NewLine +
                                 $"If you have a c-lightning server use: 'type=clightning;server=/root/.lightning/lightning-rpc', " + Environment.NewLine +
                                 $"If you have a lightning charge server: 'type=charge;server=https://charge.example.com;api-token=yourapitoken'" + Environment.NewLine +
                                 $"If you have a lnd server: 'type=lnd-rest;server=https://lnd:lnd@lnd.example.com;macaroon=abf239...;certthumbprint=2abdf302...'" + Environment.NewLine +
                                 $"              lnd server: 'type=lnd-rest;server=https://lnd:lnd@lnd.example.com;macaroonfilepath=/root/.lnd/admin.macaroon;certthumbprint=2abdf302...'" + Environment.NewLine +
-                                error);
+                                $"Error: {error}" + Environment.NewLine +
+                                "This service will not be exposed through BTCPay Server");
                         }
-                        if (connectionString.IsLegacy)
+                        else
                         {
-                            Logs.Configuration.LogWarning($"Setting {net.CryptoCode}.lightning is a deprecated format, it will work now, but please replace it for future versions with '{connectionString.ToString()}'");
+                            if (connectionString.IsLegacy)
+                            {
+                                Logs.Configuration.LogWarning($"Setting {net.CryptoCode}.lightning is a deprecated format, it will work now, but please replace it for future versions with '{connectionString.ToString()}'");
+                            }
+                            InternalLightningByCryptoCode.Add(net.CryptoCode, connectionString);
                         }
-                        InternalLightningByCryptoCode.Add(net.CryptoCode, connectionString);
                     }
                 }
 
@@ -131,28 +135,57 @@ namespace BTCPayServer.Configuration
                     {
                         if (!LightningConnectionString.TryParse(lightning, false, out var connectionString, out var error))
                         {
-                            throw new ConfigException($"Invalid setting {code}, " + Environment.NewLine +
+                            Logs.Configuration.LogWarning($"Invalid setting {code}, " + Environment.NewLine +
                                 $"lnd server: 'type={lndType};server=https://lnd.example.com;macaroon=abf239...;certthumbprint=2abdf302...'" + Environment.NewLine +
                                 $"lnd server: 'type={lndType};server=https://lnd.example.com;macaroonfilepath=/root/.lnd/admin.macaroon;certthumbprint=2abdf302...'" + Environment.NewLine +
-                                error);
+                                $"Error: {error}" + Environment.NewLine +
+                                "This service will not be exposed through BTCPay Server");
+                        }
+                        else
+                        {
+                            var instanceType = typeof(T);
+                            ExternalServicesByCryptoCode.Add(net.CryptoCode, (ExternalService)Activator.CreateInstance(instanceType, connectionString));
                         }
-                        var instanceType = typeof(T);
-                        ExternalServicesByCryptoCode.Add(net.CryptoCode, (ExternalService)Activator.CreateInstance(instanceType, connectionString));
                     }
                 };
 
                 externalLnd<ExternalLndGrpc>($"{net.CryptoCode}.external.lnd.grpc", "lnd-grpc");
                 externalLnd<ExternalLndRest>($"{net.CryptoCode}.external.lnd.rest", "lnd-rest");
 
-                var spark = conf.GetOrDefault<string>($"{net.CryptoCode}.external.spark", string.Empty);
-                if (spark.Length != 0)
                 {
-                    if (!SparkConnectionString.TryParse(spark, out var connectionString))
+                    var spark = conf.GetOrDefault<string>($"{net.CryptoCode}.external.spark", string.Empty);
+                    if (spark.Length != 0)
                     {
-                        throw new ConfigException($"Invalid setting {net.CryptoCode}.external.spark, " + Environment.NewLine +
-                            $"Valid example: 'server=https://btcpay.example.com/spark/btc/;cookiefile=/etc/clightning_bitcoin_spark/.cookie'");
+                        if (!SparkConnectionString.TryParse(spark, out var connectionString, out var error))
+                        {
+                            Logs.Configuration.LogWarning($"Invalid setting {net.CryptoCode}.external.spark, " + Environment.NewLine +
+                                $"Valid example: 'server=https://btcpay.example.com/spark/btc/;cookiefile=/etc/clightning_bitcoin_spark/.cookie'" + Environment.NewLine + 
+                                $"Error: {error}" + Environment.NewLine +
+                                "This service will not be exposed through BTCPay Server");
+                        }
+                        else
+                        {
+                            ExternalServicesByCryptoCode.Add(net.CryptoCode, new ExternalSpark(connectionString));
+                        }
+                    }
+                }
+
+                {
+                    var rtl = conf.GetOrDefault<string>($"{net.CryptoCode}.external.rtl", string.Empty);
+                    if (rtl.Length != 0)
+                    {
+                        if (!SparkConnectionString.TryParse(rtl, out var connectionString, out var error))
+                        {
+                            Logs.Configuration.LogWarning($"Invalid setting {net.CryptoCode}.external.rtl, " + Environment.NewLine +
+                                $"Valid example: 'server=https://btcpay.example.com/rtl/btc/;cookiefile=/etc/clightning_bitcoin_rtl/.cookie'" + Environment.NewLine +
+                                $"Error: {error}" + Environment.NewLine +
+                                "This service will not be exposed through BTCPay Server");
+                        }
+                        else
+                        {
+                            ExternalServicesByCryptoCode.Add(net.CryptoCode, new ExternalRTL(connectionString));
+                        }
                     }
-                    ExternalServicesByCryptoCode.Add(net.CryptoCode, new ExternalSpark(connectionString));
                 }
 
                 var charge = conf.GetOrDefault<string>($"{net.CryptoCode}.external.charge", string.Empty);
@@ -161,14 +194,18 @@ namespace BTCPayServer.Configuration
                     if (!LightningConnectionString.TryParse(charge, false, out var chargeConnectionString, out var chargeError))
                         LightningConnectionString.TryParse("type=charge;" + charge, false, out chargeConnectionString, out chargeError);
 
-                    if(chargeConnectionString == null || chargeConnectionString.ConnectionType != LightningConnectionType.Charge)
+                    if (chargeConnectionString == null || chargeConnectionString.ConnectionType != LightningConnectionType.Charge)
                     {
-                        throw new ConfigException($"Invalid setting {net.CryptoCode}.external.charge, " + Environment.NewLine +
+                        Logs.Configuration.LogWarning($"Invalid setting {net.CryptoCode}.external.charge, " + Environment.NewLine +
                                 $"lightning charge server: 'type=charge;server=https://charge.example.com;api-token=2abdf302...'" + Environment.NewLine +
                                 $"lightning charge server: 'type=charge;server=https://charge.example.com;cookiefilepath=/root/.charge/.cookie'" + Environment.NewLine +
-                                chargeError ?? string.Empty);
+                                $"Error: {chargeError ?? string.Empty}" + Environment.NewLine +
+                                $"This service will not be exposed through BTCPay Server");
+                    }
+                    else
+                    {
+                        ExternalServicesByCryptoCode.Add(net.CryptoCode, new ExternalCharge(chargeConnectionString));
                     }
-                    ExternalServicesByCryptoCode.Add(net.CryptoCode, new ExternalCharge(chargeConnectionString));
                 }
             }
 
@@ -190,7 +227,6 @@ namespace BTCPayServer.Configuration
             PostgresConnectionString = conf.GetOrDefault<string>("postgres", null);
             MySQLConnectionString = conf.GetOrDefault<string>("mysql", null);
             BundleJsCss = conf.GetOrDefault<bool>("bundlejscss", true);
-            ExternalUrl = conf.GetOrDefault<Uri>("externalurl", null);
 
             var sshSettings = ParseSSHConfiguration(conf);
             if ((!string.IsNullOrEmpty(sshSettings.Password) || !string.IsNullOrEmpty(sshSettings.KeyFile)) && !string.IsNullOrEmpty(sshSettings.Server))
@@ -250,7 +286,6 @@ namespace BTCPayServer.Configuration
 
         private SSHSettings ParseSSHConfiguration(IConfiguration conf)
         {
-            var externalUrl = conf.GetOrDefault<Uri>("externalurl", null);
             var settings = new SSHSettings();
             settings.Server = conf.GetOrDefault<string>("sshconnection", null);
             if (settings.Server != null)
@@ -277,12 +312,6 @@ namespace BTCPayServer.Configuration
                     settings.Username = "root";
                 }
             }
-            else if (externalUrl != null)
-            {
-                settings.Port = 22;
-                settings.Username = "root";
-                settings.Server = externalUrl.DnsSafeHost;
-            }
             settings.Password = conf.GetOrDefault<string>("sshpassword", "");
             settings.KeyFile = conf.GetOrDefault<string>("sshkeyfile", "");
             settings.KeyFilePassword = conf.GetOrDefault<string>("sshkeyfilepassword", "");
@@ -311,11 +340,6 @@ namespace BTCPayServer.Configuration
             get;
             set;
         }
-        public Uri ExternalUrl
-        {
-            get;
-            set;
-        }
         public bool BundleJsCss
         {
             get;
@@ -327,14 +351,5 @@ namespace BTCPayServer.Configuration
             get;
             set;
         }
-
-        internal string GetRootUri()
-        {
-            if (ExternalUrl == null)
-                return null;
-            UriBuilder builder = new UriBuilder(ExternalUrl);
-            builder.Path = RootPath;
-            return builder.ToString();
-        }
     }
 }

BTCPayServer/Configuration/External/ExternalRTL.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BTCPayServer.Configuration.External
+{
+    public class ExternalRTL : ExternalService, IAccessKeyService
+    {
+        public SparkConnectionString ConnectionString { get; }
+
+        public ExternalRTL(SparkConnectionString connectionString)
+        {
+            if (connectionString == null)
+                throw new ArgumentNullException(nameof(connectionString));
+            ConnectionString = connectionString;
+        }
+
+        public async Task<string> ExtractAccessKey()
+        {
+            if (ConnectionString?.CookeFile == null)
+                throw new FormatException("Invalid connection string");
+            return await System.IO.File.ReadAllTextAsync(ConnectionString.CookeFile);
+        }
+    }
+}

BTCPayServer/Configuration/External/ExternalSpark.cs

@@ -5,7 +5,12 @@ using System.Threading.Tasks;
 
 namespace BTCPayServer.Configuration.External
 {
-    public class ExternalSpark : ExternalService
+    public interface IAccessKeyService
+    {
+        SparkConnectionString ConnectionString { get; }
+        Task<string> ExtractAccessKey();
+    }
+    public class ExternalSpark : ExternalService, IAccessKeyService
     {
         public SparkConnectionString ConnectionString { get; }
 
@@ -15,5 +20,19 @@ namespace BTCPayServer.Configuration.External
                 throw new ArgumentNullException(nameof(connectionString));
             ConnectionString = connectionString;
         }
+
+        public async Task<string> ExtractAccessKey()
+        {
+            if (ConnectionString?.CookeFile == null)
+                throw new FormatException("Invalid connection string");
+            var cookie = (ConnectionString.CookeFile == "fake"
+                        ? "fake:fake:fake" // Hacks for testing
+                        : await System.IO.File.ReadAllTextAsync(ConnectionString.CookeFile)).Split(':');
+            if (cookie.Length >= 3)
+            {
+                return cookie[2];
+            }
+            throw new FormatException("Invalid cookiefile format");
+        }
     }
 }

BTCPayServer/Configuration/SparkConnectionString.cs

@@ -10,11 +10,11 @@ namespace BTCPayServer.Configuration
         public Uri Server { get; private set; }
         public string CookeFile { get; private set; }
 
-        public static bool TryParse(string str, out SparkConnectionString result)
+        public static bool TryParse(string str, out SparkConnectionString result, out string error)
         {
             if (str == null)
                 throw new ArgumentNullException(nameof(str));
-
+            error = null;
             result = null;
             var resultTemp = new SparkConnectionString();
             foreach(var kv in str.Split(';')
@@ -25,15 +25,30 @@ namespace BTCPayServer.Configuration
                 {
                     case "server":
                         if (resultTemp.Server != null)
+                        {
+                            error = "Duplicated server attribute";
                             return false;
+                        }
                         if (!Uri.IsWellFormedUriString(kv[1], UriKind.Absolute))
+                        {
+                            error = "Invalid URI";
                             return false;
+                        }
                         resultTemp.Server = new Uri(kv[1], UriKind.Absolute);
+                        if(resultTemp.Server.Scheme == "http")
+                        {
+                            error = "Insecure transport protocol (http)";
+                            return false;
+                        }
                         break;
                     case "cookiefile":
                     case "cookiefilepath":
                         if (resultTemp.CookeFile != null)
+                        {
+                            error = "Duplicated cookiefile attribute";
                             return false;
+                        }
+                            
                         resultTemp.CookeFile = kv[1];
                         break;
                     default:

BTCPayServer/Controllers/AppsController.PointOfSale.cs

@@ -55,12 +55,16 @@ namespace BTCPayServer.Controllers
                     "  custom: true";
                 EnableShoppingCart = false;
                 ShowCustomAmount = true;
+                ShowDiscount = true;
+                EnableTips = true;
             }
             public string Title { get; set; }
             public string Currency { get; set; }
             public string Template { get; set; }
             public bool EnableShoppingCart { get; set; }
             public bool ShowCustomAmount { get; set; }
+            public bool ShowDiscount { get; set; }
+            public bool EnableTips { get; set; }
 
             public const string BUTTON_TEXT_DEF = "Buy for {0}";
             public string ButtonText { get; set; } = BUTTON_TEXT_DEF;
@@ -89,6 +93,8 @@ namespace BTCPayServer.Controllers
                 Title = settings.Title,
                 EnableShoppingCart = settings.EnableShoppingCart,
                 ShowCustomAmount = settings.ShowCustomAmount,
+                ShowDiscount = settings.ShowDiscount,
+                EnableTips = settings.EnableTips,
                 Currency = settings.Currency,
                 Template = settings.Template,
                 ButtonText = settings.ButtonText ?? PointOfSaleSettings.BUTTON_TEXT_DEF,
@@ -160,6 +166,8 @@ namespace BTCPayServer.Controllers
                 Title = vm.Title,
                 EnableShoppingCart = vm.EnableShoppingCart,
                 ShowCustomAmount = vm.ShowCustomAmount,
+                ShowDiscount = vm.ShowDiscount,
+                EnableTips = vm.EnableTips,
                 Currency = vm.Currency.ToUpperInvariant(),
                 Template = vm.Template,
                 ButtonText = vm.ButtonText,

BTCPayServer/Controllers/AppsPublicController.cs

@@ -62,6 +62,8 @@ namespace BTCPayServer.Controllers
                 Step = step.ToString(CultureInfo.InvariantCulture),
                 EnableShoppingCart = settings.EnableShoppingCart,
                 ShowCustomAmount = settings.ShowCustomAmount,
+                ShowDiscount = settings.ShowDiscount,
+                EnableTips = settings.EnableTips,
                 CurrencyCode = settings.Currency,
                 CurrencySymbol = numberFormatInfo.CurrencySymbol,
                 CurrencyInfo = new ViewPointOfSaleViewModel.CurrencyInfoData()
@@ -172,8 +174,9 @@ namespace BTCPayServer.Controllers
             store.AdditionalClaims.Add(new Claim(Policies.CanCreateInvoice.Key, store.Id));
             try
             {
-                var invoice = await _InvoiceController.CreateInvoiceCore(new Invoice()
+                var invoice = await _InvoiceController.CreateInvoiceCore(new CreateInvoiceRequest()
                 {
+                    OrderId = AppService.GetCrowdfundOrderId(appId),
                     Currency = settings.TargetCurrency,
                     ItemCode = request.ChoiceKey ?? string.Empty,
                     ItemDesc = title,
@@ -250,7 +253,7 @@ namespace BTCPayServer.Controllers
             }
             var store = await _AppService.GetStore(app);
             store.AdditionalClaims.Add(new Claim(Policies.CanCreateInvoice.Key, store.Id));
-            var invoice = await _InvoiceController.CreateInvoiceCore(new NBitpayClient.Invoice()
+            var invoice = await _InvoiceController.CreateInvoiceCore(new CreateInvoiceRequest()
             {
                 ItemCode = choice?.Id,
                 ItemDesc = title,

BTCPayServer/Controllers/InvoiceController.API.cs

@@ -32,8 +32,10 @@ namespace BTCPayServer.Controllers
         [HttpPost]
         [Route("invoices")]
         [MediaTypeConstraint("application/json")]
-        public async Task<DataWrapper<InvoiceResponse>> CreateInvoice([FromBody] Invoice invoice)
+        public async Task<DataWrapper<InvoiceResponse>> CreateInvoice([FromBody] CreateInvoiceRequest invoice)
         {
+            if (invoice == null)
+                throw new BitpayHttpException(400, "Invalid invoice");
             return await _InvoiceController.CreateInvoiceCore(invoice, HttpContext.GetStoreData(), HttpContext.Request.GetAbsoluteRoot());
         }
 

BTCPayServer/Controllers/InvoiceController.UI.cs

@@ -578,7 +578,7 @@ namespace BTCPayServer.Controllers
 
             try
             {
-                var result = await CreateInvoiceCore(new Invoice()
+                var result = await CreateInvoiceCore(new CreateInvoiceRequest()
                 {
                     Price = model.Amount.Value,
                     Currency = model.Currency,

BTCPayServer/Controllers/InvoiceController.cs

@@ -62,7 +62,7 @@ namespace BTCPayServer.Controllers
         }
 
 
-        internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(Invoice invoice, StoreData store, string serverUrl, List<string> additionalTags = null)
+        internal async Task<DataWrapper<InvoiceResponse>> CreateInvoiceCore(CreateInvoiceRequest invoice, StoreData store, string serverUrl, List<string> additionalTags = null)
         {
             if (!store.HasClaim(Policies.CanCreateInvoice.Key))
                 throw new UnauthorizedAccessException();
@@ -70,6 +70,7 @@ namespace BTCPayServer.Controllers
             logs.Write("Creation of invoice starting");
             var entity = new InvoiceEntity
             {
+                Version = InvoiceEntity.Lastest_Version,
                 InvoiceTime = DateTimeOffset.UtcNow
             };
 
@@ -89,7 +90,7 @@ namespace BTCPayServer.Controllers
                 entity.NotificationURL = notificationUri.AbsoluteUri;
             }
             entity.NotificationEmail = invoice.NotificationEmail;
-            entity.BuyerInformation = Map<Invoice, BuyerInformation>(invoice);
+            entity.BuyerInformation = Map<CreateInvoiceRequest, BuyerInformation>(invoice);
             entity.PaymentTolerance = storeBlob.PaymentTolerance;
             if (additionalTags != null)
                 entity.InternalTags.AddRange(additionalTags);
@@ -102,17 +103,21 @@ namespace BTCPayServer.Controllers
                 entity.RefundMail = entity.BuyerInformation.BuyerEmail;
             }
 
+            var taxIncluded = invoice.TaxIncluded.HasValue ? invoice.TaxIncluded.Value : 0m;
+            
             var currencyInfo = _CurrencyNameTable.GetNumberFormatInfo(invoice.Currency, false);
             if (currencyInfo != null)
             {
-                invoice.Price = Math.Round(invoice.Price, currencyInfo.CurrencyDecimalDigits);
-                invoice.TaxIncluded = Math.Round(invoice.TaxIncluded, currencyInfo.CurrencyDecimalDigits);
+                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, invoice.TaxIncluded);
-            invoice.TaxIncluded = Math.Min(invoice.TaxIncluded, invoice.Price);
+            invoice.TaxIncluded = Math.Max(0.0m, taxIncluded);
+            invoice.TaxIncluded = Math.Min(taxIncluded, invoice.Price);
 
-            entity.ProductInformation = Map<Invoice, ProductInformation>(invoice);
+            entity.ProductInformation = Map<CreateInvoiceRequest, ProductInformation>(invoice);
 
 
             entity.RedirectURL = invoice.RedirectURL ?? store.StoreWebsite;
@@ -125,6 +130,17 @@ namespace BTCPayServer.Controllers
             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))

BTCPayServer/Controllers/PaymentRequestController.cs

@@ -0,0 +1,321 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Security.Claims;
+using System.Threading.Tasks;
+using BTCPayServer.Data;
+using BTCPayServer.Filters;
+using BTCPayServer.Models;
+using BTCPayServer.Models.PaymentRequestViewModels;
+using BTCPayServer.PaymentRequest;
+using BTCPayServer.Payments;
+using BTCPayServer.Payments.Lightning;
+using BTCPayServer.Rating;
+using BTCPayServer.Security;
+using BTCPayServer.Services.Invoices;
+using BTCPayServer.Services.PaymentRequests;
+using BTCPayServer.Services.Rates;
+using BTCPayServer.Services.Stores;
+using Ganss.XSS;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http.Extensions;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using NBitpayClient;
+
+namespace BTCPayServer.Controllers
+{
+    [Route("payment-requests")]
+    [Authorize(AuthenticationSchemes = Policies.CookieAuthentication)]
+    public class PaymentRequestController : Controller
+    {
+        private readonly InvoiceController _InvoiceController;
+        private readonly UserManager<ApplicationUser> _UserManager;
+        private readonly StoreRepository _StoreRepository;
+        private readonly PaymentRequestRepository _PaymentRequestRepository;
+        private readonly PaymentRequestService _PaymentRequestService;
+        private readonly EventAggregator _EventAggregator;
+        private readonly CurrencyNameTable _Currencies;
+        private readonly HtmlSanitizer _htmlSanitizer;
+
+        public PaymentRequestController(
+            InvoiceController invoiceController,
+            UserManager<ApplicationUser> userManager,
+            StoreRepository storeRepository,
+            PaymentRequestRepository paymentRequestRepository,
+            PaymentRequestService paymentRequestService,
+            EventAggregator eventAggregator,
+            CurrencyNameTable currencies,
+            HtmlSanitizer htmlSanitizer)
+        {
+            _InvoiceController = invoiceController;
+            _UserManager = userManager;
+            _StoreRepository = storeRepository;
+            _PaymentRequestRepository = paymentRequestRepository;
+            _PaymentRequestService = paymentRequestService;
+            _EventAggregator = eventAggregator;
+            _Currencies = currencies;
+            _htmlSanitizer = htmlSanitizer;
+        }
+
+        [HttpGet]
+        [Route("")]
+        [BitpayAPIConstraint(false)]
+        public async Task<IActionResult> GetPaymentRequests(int skip = 0, int count = 50, string statusMessage = null)
+        {
+            var result = await _PaymentRequestRepository.FindPaymentRequests(new PaymentRequestQuery()
+            {
+                UserId = GetUserId(), Skip = skip, Count = count
+            });
+            return View(new ListPaymentRequestsViewModel()
+            {
+                Skip = skip,
+                StatusMessage = statusMessage,
+                Count = count,
+                Total = result.Total,
+                Items = result.Items.Select(data => new ViewPaymentRequestViewModel(data)).ToList()
+            });
+        }
+
+        [HttpGet]
+        [Route("edit/{id?}")]
+        public async Task<IActionResult> EditPaymentRequest(string id, string statusMessage = null)
+        {
+            SelectList stores = null;
+            var data = await _PaymentRequestRepository.FindPaymentRequest(id, GetUserId());
+            if (data == null && !string.IsNullOrEmpty(id))
+            {
+                return NotFound();
+            }
+
+            stores = new SelectList(await _StoreRepository.GetStoresByUserId(GetUserId()), nameof(StoreData.Id),
+                nameof(StoreData.StoreName), data?.StoreDataId);
+            if (!stores.Any())
+            {
+                return RedirectToAction("GetPaymentRequests",
+                    new
+                    {
+                        StatusMessage = "Error: You need to create at least one store before creating a payment request"
+                    });
+            }
+
+            return View(new UpdatePaymentRequestViewModel(data)
+            {
+                Stores = stores,
+                StatusMessage = statusMessage
+            });
+        }
+
+        [HttpPost]
+        [Route("edit/{id?}")]
+        public async Task<IActionResult> EditPaymentRequest(string id, UpdatePaymentRequestViewModel viewModel)
+        {
+            if (string.IsNullOrEmpty(viewModel.Currency) ||
+                _Currencies.GetCurrencyData(viewModel.Currency, false) == null)
+                ModelState.AddModelError(nameof(viewModel.Currency), "Invalid currency");
+
+            var data = await _PaymentRequestRepository.FindPaymentRequest(id, GetUserId());
+            if (data == null && !string.IsNullOrEmpty(id))
+            {
+                return NotFound();
+            }
+
+            if (!ModelState.IsValid)
+            {
+                viewModel.Stores = new SelectList(await _StoreRepository.GetStoresByUserId(GetUserId()),
+                    nameof(StoreData.Id),
+                    nameof(StoreData.StoreName), data?.StoreDataId);
+
+                return View(viewModel);
+            }
+
+            if (data == null)
+            {
+                data = new PaymentRequestData();
+            }
+
+            data.StoreDataId = viewModel.StoreId;
+            var blob = data.GetBlob();
+
+            blob.Title = viewModel.Title;
+            blob.Email = viewModel.Email;
+            blob.Description = _htmlSanitizer.Sanitize(viewModel.Description);
+            blob.Amount = viewModel.Amount;
+            blob.ExpiryDate = viewModel.ExpiryDate;
+            blob.Currency = viewModel.Currency;
+            blob.EmbeddedCSS = viewModel.EmbeddedCSS;
+            blob.CustomCSSLink = viewModel.CustomCSSLink;
+            blob.AllowCustomPaymentAmounts = viewModel.AllowCustomPaymentAmounts;
+
+            data.SetBlob(blob);
+            data = await _PaymentRequestRepository.CreateOrUpdatePaymentRequest(data);
+            _EventAggregator.Publish(new PaymentRequestUpdated()
+            {
+                Data = data,
+                PaymentRequestId = data.Id
+            });
+
+            return RedirectToAction("EditPaymentRequest", new {id = data.Id, StatusMessage = "Saved"});
+        }
+
+        [HttpGet]
+        [Route("{id}/remove")]
+        [BitpayAPIConstraint(false)]
+        public async Task<IActionResult> RemovePaymentRequestPrompt(string id)
+        {
+            var data = await _PaymentRequestRepository.FindPaymentRequest(id, GetUserId());
+            if (data == null)
+            {
+                return NotFound();
+            }
+
+            var blob = data.GetBlob();
+            return View("Confirm", new ConfirmModel()
+            {
+                Title = $"Remove Payment Request",
+                Description = $"Are you sure to remove access to remove payment request '{blob.Title}' ?",
+                Action = "Delete"
+            });
+        }
+
+        [HttpPost]
+        [Route("{id}/remove")]
+        [BitpayAPIConstraint(false)]
+        public async Task<IActionResult> RemovePaymentRequest(string id)
+        {
+            var result = await _PaymentRequestRepository.RemovePaymentRequest(id, GetUserId());
+            if (result)
+            {
+                return RedirectToAction("GetPaymentRequests",
+                    new {StatusMessage = "Payment request successfully removed"});
+            }
+            else
+            {
+                return RedirectToAction("GetPaymentRequests",
+                    new
+                    {
+                        StatusMessage =
+                            "Payment request could not be removed. Any request that has generated invoices cannot be removed."
+                    });
+            }
+        }
+
+        [HttpGet]
+        [Route("{id}")]
+        [AllowAnonymous]
+        public async Task<IActionResult> ViewPaymentRequest(string id)
+        {
+            var result = await _PaymentRequestService.GetPaymentRequest(id, GetUserId());
+            if (result == null)
+            {
+                return NotFound();
+            }
+
+            return View(result);
+        }
+
+        [HttpGet]
+        [Route("{id}/pay")]
+        [AllowAnonymous]
+        public async Task<IActionResult> PayPaymentRequest(string id, bool redirectToInvoice = true,
+            decimal? amount = null)
+        {
+            var result = ((await ViewPaymentRequest(id)) as ViewResult)?.Model as ViewPaymentRequestViewModel;
+            if (result == null)
+            {
+                return NotFound();
+            }
+
+            if (result.AmountDue <= 0)
+            {
+                if (redirectToInvoice)
+                {
+                    return RedirectToAction("ViewPaymentRequest", new {Id = id});
+                }
+
+                return BadRequest("Payment Request has already been settled.");
+            }
+
+            if (result.ExpiryDate.HasValue && DateTime.Now >= result.ExpiryDate)
+            {
+                if (redirectToInvoice)
+                {
+                    return RedirectToAction("ViewPaymentRequest", new {Id = id});
+                }
+
+                return BadRequest("Payment Request has expired");
+            }
+
+            var statusesAllowedToDisplay = new List<InvoiceStatus>()
+            {
+                InvoiceStatus.New
+            };
+            var validInvoice = result.Invoices.FirstOrDefault(invoice =>
+                Enum.TryParse<InvoiceStatus>(invoice.Status, true, out var status) &&
+                statusesAllowedToDisplay.Contains(status));
+
+            if (validInvoice != null)
+            {
+                if (redirectToInvoice)
+                {
+                    return RedirectToAction("Checkout", "Invoice", new {Id = validInvoice.Id});
+                }
+
+                return Ok(validInvoice.Id);
+            }
+
+            if (result.AllowCustomPaymentAmounts && amount != null)
+            {
+                var invoiceAmount = result.AmountDue < amount ? result.AmountDue : amount;
+
+                return await CreateInvoiceForPaymentRequest(id, redirectToInvoice, result, invoiceAmount);
+            }
+
+
+            return await CreateInvoiceForPaymentRequest(id, redirectToInvoice, result);
+        }
+
+        private async Task<IActionResult> CreateInvoiceForPaymentRequest(string id,
+            bool redirectToInvoice,
+            ViewPaymentRequestViewModel result,
+            decimal? amount = null)
+        {
+            var pr = await _PaymentRequestRepository.FindPaymentRequest(id, null);
+            var blob = pr.GetBlob();
+            var store = pr.StoreData;
+            store.AdditionalClaims.Add(new Claim(Policies.CanCreateInvoice.Key, store.Id));
+            try
+            {
+                var redirectUrl = Request.GetDisplayUrl().TrimEnd("/pay", StringComparison.InvariantCulture)
+                    .Replace("hub?id=", string.Empty, StringComparison.InvariantCultureIgnoreCase);
+                var newInvoiceId = (await _InvoiceController.CreateInvoiceCore(new CreateInvoiceRequest()
+                {
+                    OrderId = $"{PaymentRequestRepository.GetOrderIdForPaymentRequest(id)}",
+                    Currency = blob.Currency,
+                    Price = amount.GetValueOrDefault(result.AmountDue),
+                    FullNotifications = true,
+                    BuyerEmail = result.Email,
+                    RedirectURL = redirectUrl,
+                }, store, HttpContext.Request.GetAbsoluteRoot(), new List<string>() { PaymentRequestRepository.GetInternalTag(id) })).Data.Id;
+
+                if (redirectToInvoice)
+                {
+                    return RedirectToAction("Checkout", "Invoice", new {Id = newInvoiceId});
+                }
+
+                return Ok(newInvoiceId);
+            }
+            catch (BitpayHttpException e)
+            {
+                return BadRequest(e.Message);
+            }
+        }
+
+        private string GetUserId()
+        {
+            return _UserManager.GetUserId(User);
+        }
+    }
+}

BTCPayServer/Controllers/PublicController.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using BTCPayServer.Filters;
+using BTCPayServer.Models;
 using BTCPayServer.Models.StoreViewModels;
 using BTCPayServer.Services.Stores;
 using Microsoft.AspNetCore.Cors;
@@ -45,7 +46,7 @@ namespace BTCPayServer.Controllers
             if (!ModelState.IsValid)
                 return View();
 
-            var invoice = await _InvoiceController.CreateInvoiceCore(new NBitpayClient.Invoice()
+            var invoice = await _InvoiceController.CreateInvoiceCore(new CreateInvoiceRequest()
             {
                 Price = model.Price,
                 Currency = model.Currency,

BTCPayServer/Controllers/ServerController.cs

@@ -27,6 +27,7 @@ using Renci.SshNet;
 using BTCPayServer.Logging;
 using BTCPayServer.Lightning;
 using BTCPayServer.Configuration.External;
+using System.Runtime.CompilerServices;
 
 namespace BTCPayServer.Controllers
 {
@@ -474,7 +475,17 @@ namespace BTCPayServer.Controllers
                     {
                         Crypto = cryptoCode,
                         Type = "Spark server",
-                        Action = nameof(SparkServices),
+                        Action = nameof(SparkService),
+                        Index = i++,
+                    });
+                }
+                foreach (var rtlService in _Options.ExternalServicesByCryptoCode.GetServices<ExternalRTL>(cryptoCode))
+                {
+                    result.LNDServices.Add(new ServicesViewModel.LNDServiceViewModel()
+                    {
+                        Crypto = cryptoCode,
+                        Type = "Ride the Lightning server (RTL)",
+                        Action = nameof(RTLService),
                         Index = i++,
                     });
                 }
@@ -548,37 +559,41 @@ namespace BTCPayServer.Controllers
         }
 
         [Route("server/services/spark/{cryptoCode}/{index}")]
-        public async Task<IActionResult> SparkServices(string cryptoCode, int index, bool showQR = false)
+        public async Task<IActionResult> SparkService(string cryptoCode, int index, bool showQR = false)
+        {
+            return await LightningWalletServicesCore<ExternalSpark>(cryptoCode, showQR, "Spark Wallet");
+        }
+        [Route("server/services/rtl/{cryptoCode}/{index}")]
+        public async Task<IActionResult> RTLService(string cryptoCode, int index, bool showQR = false)
+        {
+            return await LightningWalletServicesCore<ExternalRTL>(cryptoCode, showQR, "Ride the Lightning Wallet");
+        }
+        private async Task<IActionResult> LightningWalletServicesCore<T>(string cryptoCode, bool showQR, string walletName) where T : ExternalService, IAccessKeyService
         {
             if (!_dashBoard.IsFullySynched(cryptoCode, out var unusud))
             {
                 StatusMessage = $"Error: {cryptoCode} is not fully synched";
                 return RedirectToAction(nameof(Services));
             }
-            var spark = _Options.ExternalServicesByCryptoCode.GetServices<ExternalSpark>(cryptoCode).Select(c => c.ConnectionString).FirstOrDefault();
-            if (spark == null)
+            var external = _Options.ExternalServicesByCryptoCode.GetServices<T>(cryptoCode).Where(c => c?.ConnectionString?.Server != null).FirstOrDefault();
+            if (external == null)
             {
                 return NotFound();
             }
 
-            SparkServicesViewModel vm = new SparkServicesViewModel();
+            LightningWalletServices vm = new LightningWalletServices();
             vm.ShowQR = showQR;
+            vm.WalletName = walletName;
             try
             {
-                var cookie = (spark.CookeFile == "fake"
-                            ? "fake:fake:fake" // If we are testing, it should not crash
-                            : await System.IO.File.ReadAllTextAsync(spark.CookeFile)).Split(':');
-                if (cookie.Length >= 3)
-                {
-                    vm.SparkLink = $"{spark.Server.AbsoluteUri}?access-key={cookie[2]}";
-                }
+                vm.ServiceLink = $"{external.ConnectionString.Server.AbsoluteUri}?access-key={await external.ExtractAccessKey()}";
             }
             catch (Exception ex)
             {
                 StatusMessage = $"Error: {ex.Message}";
                 return RedirectToAction(nameof(Services));
             }
-            return View(vm);
+            return View("LightningWalletServices", vm);
         }
 
         [Route("server/services/lnd/{cryptoCode}/{index}")]

BTCPayServer/Data/ApplicationDbContext.cs

@@ -5,6 +5,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 using BTCPayServer.Models;
+using BTCPayServer.Services.PaymentRequests;
 using Microsoft.EntityFrameworkCore.Infrastructure.Internal;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 
@@ -54,6 +55,11 @@ namespace BTCPayServer.Data
         {
             get; set;
         }
+        
+        public DbSet<PaymentRequestData> PaymentRequests
+        {
+            get; set;
+        }
 
         public DbSet<StoreData> Stores
         {
@@ -204,6 +210,15 @@ namespace BTCPayServer.Data
                     o.UniqueId
 #pragma warning restore CS0618
                 });
+            
+            
+            builder.Entity<PaymentRequestData>()
+                .HasOne(o => o.StoreData)
+                .WithMany(i => i.PaymentRequests)
+                .OnDelete(DeleteBehavior.Cascade);
+
+            builder.Entity<PaymentRequestData>()
+                .HasIndex(o => o.Status);
         }
     }
 }

BTCPayServer/Data/StoreData.cs

@@ -21,6 +21,7 @@ using BTCPayServer.Payments.Changelly;
 using BTCPayServer.Payments.CoinSwitch;
 using BTCPayServer.Security;
 using BTCPayServer.Rating;
+using BTCPayServer.Services.PaymentRequests;
 using BTCPayServer.Services.Mails;
 
 namespace BTCPayServer.Data
@@ -41,6 +42,11 @@ namespace BTCPayServer.Data
         {
             get; set;
         }
+        
+        public List<PaymentRequestData> PaymentRequests
+        {
+            get; set;
+        }
 
         public List<InvoiceData> Invoices { get; set; }
 

BTCPayServer/Extensions.cs

@@ -61,6 +61,23 @@ namespace BTCPayServer
             }
             return value;
         }
+        public static decimal RoundToSignificant(this decimal value, ref int divisibility)
+        {
+            if (value != 0m)
+            {
+                while (true)
+                {
+                    var rounded = decimal.Round(value, divisibility, MidpointRounding.AwayFromZero);
+                    if ((Math.Abs(rounded - value) / value) < 0.001m)
+                    {
+                        value = rounded;
+                        break;
+                    }
+                    divisibility++;
+                }
+            }
+            return value;
+        }
         public static PaymentMethodId GetpaymentMethodId(this InvoiceCryptoInfo info)
         {
             return new PaymentMethodId(info.CryptoCode, Enum.Parse<PaymentTypes>(info.PaymentType));
@@ -298,5 +315,15 @@ namespace BTCPayServer
             var res = JsonConvert.SerializeObject(o, Formatting.None, jsonSettings);
             return res;
         }
+        
+        public static string TrimEnd(this string input, string suffixToRemove,
+            StringComparison comparisonType) {
+
+            if (input != null && suffixToRemove != null
+                              && input.EndsWith(suffixToRemove, comparisonType)) {
+                return input.Substring(0, input.Length - suffixToRemove.Length);
+            }
+            else return input;
+        }
     }
 }

BTCPayServer/HostedServices/EventHostedServiceBase.cs

@@ -60,7 +60,7 @@ namespace BTCPayServer.HostedServices
             _Subscriptions.Add(_EventAggregator.Subscribe<T>(e => _Events.Writer.TryWrite(e)));
         }
 
-        public Task StartAsync(CancellationToken cancellationToken)
+        public virtual Task StartAsync(CancellationToken cancellationToken)
         {
             _Subscriptions = new List<IEventAggregatorSubscription>();
             SubscibeToEvents();
@@ -70,7 +70,7 @@ namespace BTCPayServer.HostedServices
         }
         Task _ProcessingEvents = Task.CompletedTask;
 
-        public async Task StopAsync(CancellationToken cancellationToken)
+        public virtual async Task StopAsync(CancellationToken cancellationToken)
         {
             _Subscriptions?.ForEach(subscription => subscription.Dispose());
             _Cts?.Cancel();

BTCPayServer/Hosting/BTCPayServerServices.cs

@@ -38,9 +38,11 @@ using BTCPayServer.Logging;
 using BTCPayServer.HostedServices;
 using Meziantou.AspNetCore.BundleTagHelpers;
 using System.Security.Claims;
+using BTCPayServer.PaymentRequest;
 using BTCPayServer.Payments.Changelly;
 using BTCPayServer.Payments.Lightning;
 using BTCPayServer.Security;
+using BTCPayServer.Services.PaymentRequests;
 using Microsoft.AspNetCore.Mvc.ModelBinding;
 using NBXplorer.DerivationStrategy;
 using NicolasDorier.RateLimits;
@@ -74,6 +76,7 @@ namespace BTCPayServer.Hosting
             services.AddSingleton<BTCPayServerEnvironment>();
             services.TryAddSingleton<TokenRepository>();
             services.TryAddSingleton<EventAggregator>();
+            services.TryAddSingleton<PaymentRequestService>();
             services.TryAddSingleton<CoinAverageSettings>();
             services.TryAddSingleton<ApplicationDbContextFactory>(o => 
             {
@@ -150,6 +153,7 @@ namespace BTCPayServer.Hosting
             services.TryAddSingleton<LanguageService>();
             services.TryAddSingleton<NBXplorerDashboard>();
             services.TryAddSingleton<StoreRepository>();
+            services.TryAddSingleton<PaymentRequestRepository>();
             services.TryAddSingleton<BTCPayWalletProvider>();
             services.TryAddSingleton<CurrencyNameTable>();
             services.TryAddSingleton<IFeeProviderFactory>(o => new NBXplorerFeeProviderFactory(o.GetRequiredService<ExplorerClientProvider>())
@@ -184,7 +188,7 @@ namespace BTCPayServer.Hosting
             services.AddSingleton<IHostedService, RatesHostedService>();
             services.AddSingleton<IHostedService, BackgroundJobSchedulerHostedService>();
             services.AddSingleton<IHostedService, AppHubStreamer>();
-
+            services.AddSingleton<IHostedService, PaymentRequestStreamer>();
             services.AddSingleton<IBackgroundJobClient, BackgroundJobClient>();
             services.AddTransient<IConfigureOptions<MvcOptions>, BTCPayClaimsFilter>();
 
@@ -203,6 +207,7 @@ namespace BTCPayServer.Hosting
             services.AddTransient<AccessTokenController>();
             services.AddTransient<InvoiceController>();
             services.AddTransient<AppsPublicController>();
+            services.AddTransient<PaymentRequestController>();
             // Add application services.
             services.AddSingleton<EmailSenderFactory>();
             // bundling

BTCPayServer/Hosting/BTCpayMiddleware.cs

@@ -147,59 +147,33 @@ namespace BTCPayServer.Hosting
                 }
             }
 
-            // Make sure that code executing after this point think that the external url has been hit.
-            if (_Options.ExternalUrl != null)
-            {
-                if (reverseProxyScheme != null && _Options.ExternalUrl.Scheme != reverseProxyScheme)
-                {
-                    if (reverseProxyScheme == "http" && _Options.ExternalUrl.Scheme == "https")
-                        Logs.PayServer.LogWarning($"BTCPay ExternalUrl setting expected to use scheme '{_Options.ExternalUrl.Scheme}' externally, but the reverse proxy uses scheme '{reverseProxyScheme}' (X-Forwarded-Port), forcing ExternalUrl");
-                }
-                httpContext.Request.Scheme = _Options.ExternalUrl.Scheme;
-                if (_Options.ExternalUrl.IsDefaultPort)
-                    httpContext.Request.Host = new HostString(_Options.ExternalUrl.Host);
-                else
-                {
-                    if (reverseProxyPort != null && _Options.ExternalUrl.Port != reverseProxyPort.Value)
-                    {
-                        Logs.PayServer.LogWarning($"BTCPay ExternalUrl setting expected to use port '{_Options.ExternalUrl.Port}' externally, but the reverse proxy uses port '{reverseProxyPort.Value}'");
-                        httpContext.Request.Host = new HostString(_Options.ExternalUrl.Host, reverseProxyPort.Value);
-                    }
-                    else
-                    {
-                        httpContext.Request.Host = new HostString(_Options.ExternalUrl.Host, _Options.ExternalUrl.Port);
-                    }
-                }
-            }
             // NGINX pass X-Forwarded-Proto and X-Forwarded-Port, so let's use that to have better guess of the real domain
-            else
+
+            ushort? p = null;
+            if (reverseProxyScheme != null)
             {
-                ushort? p = null;
-                if (reverseProxyScheme != null)
-                {
-                    httpContext.Request.Scheme = reverseProxyScheme;
-                    if (reverseProxyScheme == "http")
-                        p = 80;
-                    if (reverseProxyScheme == "https")
-                        p = 443;
-                }
-
-
-                if (reverseProxyPort != null)
-                {
-                    p = reverseProxyPort.Value;
-                }
-
-                if (p.HasValue)
-                {
-                    bool isDefault = httpContext.Request.Scheme == "http" && p.Value == 80;
-                    isDefault |= httpContext.Request.Scheme == "https" && p.Value == 443;
-                    if (isDefault)
-                        httpContext.Request.Host = new HostString(httpContext.Request.Host.Host);
-                    else
-                        httpContext.Request.Host = new HostString(httpContext.Request.Host.Host, p.Value);
-                }
+                httpContext.Request.Scheme = reverseProxyScheme;
+                if (reverseProxyScheme == "http")
+                    p = 80;
+                if (reverseProxyScheme == "https")
+                    p = 443;
             }
+
+            if (reverseProxyPort != null)
+            {
+                p = reverseProxyPort.Value;
+            }
+
+            if (p.HasValue)
+            {
+                bool isDefault = httpContext.Request.Scheme == "http" && p.Value == 80;
+                isDefault |= httpContext.Request.Scheme == "https" && p.Value == 443;
+                if (isDefault)
+                    httpContext.Request.Host = new HostString(httpContext.Request.Host.Host);
+                else
+                    httpContext.Request.Host = new HostString(httpContext.Request.Host.Host, p.Value);
+            }
+
         }
 
         private static async Task HandleBitpayHttpException(HttpContext httpContext, BitpayHttpException ex)

BTCPayServer/Hosting/Startup.cs

@@ -34,6 +34,7 @@ using Microsoft.Extensions.Options;
 using Microsoft.AspNetCore.Mvc.Cors.Internal;
 using Microsoft.AspNetCore.Server.Kestrel.Core;
 using System.Net;
+using BTCPayServer.PaymentRequest;
 using Meziantou.AspNetCore.BundleTagHelpers;
 using BTCPayServer.Security;
 using BTCPayServer.Services.Apps;
@@ -165,6 +166,7 @@ namespace BTCPayServer.Hosting
             app.UseSignalR(route =>
             {
                 route.MapHub<AppHub>("/apps/hub");
+                route.MapHub<PaymentRequestHub>("/payment-requests/hub");
             });
             app.UseWebSockets();
             app.UseStatusCodePages();

BTCPayServer/Migrations/20190121133309_AddPaymentRequests.Designer.cs

@@ -0,0 +1,606 @@
+// <auto-generated />
+using System;
+using BTCPayServer.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+namespace BTCPayServer.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20190121133309_AddPaymentRequests")]
+    partial class AddPaymentRequests
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "2.1.4-rtm-31024");
+
+            modelBuilder.Entity("BTCPayServer.Data.AddressInvoiceData", b =>
+                {
+                    b.Property<string>("Address")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<DateTimeOffset?>("CreatedTime");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Address");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("AddressInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.APIKeyData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasMaxLength(50);
+
+                    b.Property<string>("StoreId")
+                        .HasMaxLength(50);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("StoreId");
+
+                    b.ToTable("ApiKeys");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.AppData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("AppType");
+
+                    b.Property<DateTimeOffset>("Created");
+
+                    b.Property<string>("Name");
+
+                    b.Property<string>("Settings");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("Apps");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.HistoricalAddressInvoiceData", b =>
+                {
+                    b.Property<string>("InvoiceDataId");
+
+                    b.Property<string>("Address");
+
+                    b.Property<DateTimeOffset>("Assigned");
+
+                    b.Property<string>("CryptoCode");
+
+                    b.Property<DateTimeOffset?>("UnAssigned");
+
+                    b.HasKey("InvoiceDataId", "Address");
+
+                    b.ToTable("HistoricalAddressInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<DateTimeOffset>("Created");
+
+                    b.Property<string>("CustomerEmail");
+
+                    b.Property<string>("ExceptionStatus");
+
+                    b.Property<string>("ItemCode");
+
+                    b.Property<string>("OrderId");
+
+                    b.Property<string>("Status");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("Invoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceEventData", b =>
+                {
+                    b.Property<string>("InvoiceDataId");
+
+                    b.Property<string>("UniqueId");
+
+                    b.Property<string>("Message");
+
+                    b.Property<DateTimeOffset>("Timestamp");
+
+                    b.HasKey("InvoiceDataId", "UniqueId");
+
+                    b.ToTable("InvoiceEvents");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairedSINData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Facade");
+
+                    b.Property<string>("Label");
+
+                    b.Property<DateTimeOffset>("PairingTime");
+
+                    b.Property<string>("SIN");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SIN");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("PairedSINData");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairingCodeData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<DateTime>("DateCreated");
+
+                    b.Property<DateTimeOffset>("Expiration");
+
+                    b.Property<string>("Facade");
+
+                    b.Property<string>("Label");
+
+                    b.Property<string>("SIN");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.Property<string>("TokenValue");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PairingCodes");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<bool>("Accounted");
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("Payments");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PendingInvoiceData", b =>
+                {
+                    b.Property<string>("Id");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PendingInvoices");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.RefundAddressesData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<string>("InvoiceDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("InvoiceDataId");
+
+                    b.ToTable("RefundAddresses");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.SettingData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Settings");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.StoreData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("DefaultCrypto");
+
+                    b.Property<string>("DerivationStrategies");
+
+                    b.Property<string>("DerivationStrategy");
+
+                    b.Property<int>("SpeedPolicy");
+
+                    b.Property<byte[]>("StoreBlob");
+
+                    b.Property<byte[]>("StoreCertificate");
+
+                    b.Property<string>("StoreName");
+
+                    b.Property<string>("StoreWebsite");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Stores");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.UserStore", b =>
+                {
+                    b.Property<string>("ApplicationUserId");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.Property<string>("Role");
+
+                    b.HasKey("ApplicationUserId", "StoreDataId");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("UserStore");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Models.ApplicationUser", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<int>("AccessFailedCount");
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Email")
+                        .HasMaxLength(256);
+
+                    b.Property<bool>("EmailConfirmed");
+
+                    b.Property<bool>("LockoutEnabled");
+
+                    b.Property<DateTimeOffset?>("LockoutEnd");
+
+                    b.Property<string>("NormalizedEmail")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedUserName")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("PasswordHash");
+
+                    b.Property<string>("PhoneNumber");
+
+                    b.Property<bool>("PhoneNumberConfirmed");
+
+                    b.Property<bool>("RequiresEmailConfirmation");
+
+                    b.Property<string>("SecurityStamp");
+
+                    b.Property<bool>("TwoFactorEnabled");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedEmail")
+                        .HasName("EmailIndex");
+
+                    b.HasIndex("NormalizedUserName")
+                        .IsUnique()
+                        .HasName("UserNameIndex");
+
+                    b.ToTable("AspNetUsers");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Services.PaymentRequests.PaymentRequestData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<int>("Status");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Status");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("PaymentRequests");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .IsConcurrencyToken();
+
+                    b.Property<string>("Name")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("NormalizedName")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NormalizedName")
+                        .IsUnique()
+                        .HasName("RoleNameIndex");
+
+                    b.ToTable("AspNetRoles");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<string>("RoleId")
+                        .IsRequired();
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetRoleClaims");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<string>("ClaimType");
+
+                    b.Property<string>("ClaimValue");
+
+                    b.Property<string>("UserId")
+                        .IsRequired();
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserClaims");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("ProviderKey");
+
+                    b.Property<string>("ProviderDisplayName");
+
+                    b.Property<string>("UserId")
+                        .IsRequired();
+
+                    b.HasKey("LoginProvider", "ProviderKey");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AspNetUserLogins");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.Property<string>("UserId");
+
+                    b.Property<string>("RoleId");
+
+                    b.HasKey("UserId", "RoleId");
+
+                    b.HasIndex("RoleId");
+
+                    b.ToTable("AspNetUserRoles");
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.Property<string>("UserId");
+
+                    b.Property<string>("LoginProvider");
+
+                    b.Property<string>("Name");
+
+                    b.Property<string>("Value");
+
+                    b.HasKey("UserId", "LoginProvider", "Name");
+
+                    b.ToTable("AspNetUserTokens");
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.AddressInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("AddressInvoices")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.APIKeyData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("APIKeys")
+                        .HasForeignKey("StoreId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.AppData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("Apps")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.HistoricalAddressInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("HistoricalAddressInvoices")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("Invoices")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.InvoiceEventData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("Events")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PairedSINData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("PairedSINs")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PaymentData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("Payments")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.PendingInvoiceData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("PendingInvoices")
+                        .HasForeignKey("Id")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.RefundAddressesData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.InvoiceData", "InvoiceData")
+                        .WithMany("RefundAddresses")
+                        .HasForeignKey("InvoiceDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Data.UserStore", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser", "ApplicationUser")
+                        .WithMany("UserStores")
+                        .HasForeignKey("ApplicationUserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("UserStores")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("BTCPayServer.Services.PaymentRequests.PaymentRequestData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("PaymentRequests")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserClaim<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserLogin<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserRole<string>", b =>
+                {
+                    b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")
+                        .WithMany()
+                        .HasForeignKey("RoleId")
+                        .OnDelete(DeleteBehavior.Cascade);
+
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
+            modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityUserToken<string>", b =>
+                {
+                    b.HasOne("BTCPayServer.Models.ApplicationUser")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BTCPayServer/Migrations/20190121133309_AddPaymentRequests.cs

@@ -0,0 +1,47 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace BTCPayServer.Migrations
+{
+    public partial class AddPaymentRequests : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "PaymentRequests",
+                columns: table => new
+                {
+                    Id = table.Column<string>(nullable: false),
+                    StoreDataId = table.Column<string>(nullable: true),
+                    Status = table.Column<int>(nullable: false),
+                    Blob = table.Column<byte[]>(nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PaymentRequests", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PaymentRequests_Stores_StoreDataId",
+                        column: x => x.StoreDataId,
+                        principalTable: "Stores",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PaymentRequests_Status",
+                table: "PaymentRequests",
+                column: "Status");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PaymentRequests_StoreDataId",
+                table: "PaymentRequests",
+                column: "StoreDataId");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "PaymentRequests");
+        }
+    }
+}

BTCPayServer/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -328,6 +328,26 @@ namespace BTCPayServer.Migrations
                     b.ToTable("AspNetUsers");
                 });
 
+            modelBuilder.Entity("BTCPayServer.Services.PaymentRequests.PaymentRequestData", b =>
+                {
+                    b.Property<string>("Id")
+                        .ValueGeneratedOnAdd();
+
+                    b.Property<byte[]>("Blob");
+
+                    b.Property<int>("Status");
+
+                    b.Property<string>("StoreDataId");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Status");
+
+                    b.HasIndex("StoreDataId");
+
+                    b.ToTable("PaymentRequests");
+                });
+
             modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRole", b =>
                 {
                     b.Property<string>("Id")
@@ -528,6 +548,14 @@ namespace BTCPayServer.Migrations
                         .OnDelete(DeleteBehavior.Cascade);
                 });
 
+            modelBuilder.Entity("BTCPayServer.Services.PaymentRequests.PaymentRequestData", b =>
+                {
+                    b.HasOne("BTCPayServer.Data.StoreData", "StoreData")
+                        .WithMany("PaymentRequests")
+                        .HasForeignKey("StoreDataId")
+                        .OnDelete(DeleteBehavior.Cascade);
+                });
+
             modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<string>", b =>
                 {
                     b.HasOne("Microsoft.AspNetCore.Identity.IdentityRole")

BTCPayServer/Models/AppViewModels/UpdatePointOfSaleViewModel.cs

@@ -17,6 +17,10 @@ namespace BTCPayServer.Models.AppViewModels
         public bool EnableShoppingCart { get; set; }
         [Display(Name = "User can input custom amount")]
         public bool ShowCustomAmount { get; set; }
+        [Display(Name = "User can input discount in %")]
+        public bool ShowDiscount { get; set; }
+        [Display(Name = "Enable tips")]
+        public bool EnableTips { get; set; }
         public string Example1 { get; internal set; }
         public string Example2 { get; internal set; }
         public string ExampleCallback { get; internal set; }

BTCPayServer/Models/AppViewModels/ViewPointOfSaleViewModel.cs

@@ -36,6 +36,8 @@ namespace BTCPayServer.Models.AppViewModels
 
         public bool EnableShoppingCart { get; set; }
         public bool ShowCustomAmount { get; set; }
+        public bool ShowDiscount { get; set; }
+        public bool EnableTips { get; set; }
         public string Step { get; set; }
         public string Title { get; set; }
         public Item[] Items { get; set; }

BTCPayServer/Models/CreateInvoiceRequest.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using NBitcoin;
+using NBitcoin.JsonConverters;
+using NBitpayClient;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace BTCPayServer.Models
+{
+    public class CreateInvoiceRequest
+    {
+        [JsonProperty(PropertyName = "buyer")]
+        public Buyer Buyer { get; set; }
+        [JsonProperty(PropertyName = "buyerEmail", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerEmail { get; set; }
+        [JsonProperty(PropertyName = "buyerCountry", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerCountry { get; set; }
+        [JsonProperty(PropertyName = "buyerZip", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerZip { get; set; }
+        [JsonProperty(PropertyName = "buyerState", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerState { get; set; }
+        [JsonProperty(PropertyName = "buyerCity", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerCity { get; set; }
+        [JsonProperty(PropertyName = "buyerAddress2", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerAddress2 { get; set; }
+        [JsonProperty(PropertyName = "buyerAddress1", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerAddress1 { get; set; }
+        [JsonProperty(PropertyName = "buyerName", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerName { get; set; }
+        [JsonProperty(PropertyName = "physical", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public bool Physical { get; set; }
+        [JsonProperty(PropertyName = "redirectURL", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string RedirectURL { get; set; }
+        [JsonProperty(PropertyName = "notificationURL", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string NotificationURL { get; set; }
+        [JsonProperty(PropertyName = "extendedNotifications", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public bool ExtendedNotifications { get; set; }
+        [JsonProperty(PropertyName = "fullNotifications", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public bool FullNotifications { get; set; }
+        [JsonProperty(PropertyName = "transactionSpeed", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string TransactionSpeed { get; set; }
+        [JsonProperty(PropertyName = "buyerPhone", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string BuyerPhone { get; set; }
+        [JsonProperty(PropertyName = "posData", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string PosData { get; set; }
+        [JsonProperty(PropertyName = "itemCode", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string ItemCode { get; set; }
+        [JsonProperty(PropertyName = "itemDesc", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string ItemDesc { get; set; }
+        [JsonProperty(PropertyName = "orderId", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string OrderId { get; set; }
+        [JsonProperty(PropertyName = "currency", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string Currency { get; set; }
+        [JsonProperty(PropertyName = "price", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public decimal Price { get; set; }
+        [JsonProperty(PropertyName = "notificationEmail", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string NotificationEmail { get; set; }
+        [JsonConverter(typeof(DateTimeJsonConverter))]
+        [JsonProperty(PropertyName = "expirationTime", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public DateTimeOffset? ExpirationTime { get; set; }
+        [JsonProperty(PropertyName = "status", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string Status { get; set; }
+        [JsonProperty(PropertyName = "minerFees", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public Dictionary<string, MinerFeeInfo> MinerFees { get; set; }
+        [JsonProperty(PropertyName = "supportedTransactionCurrencies", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public Dictionary<string, InvoiceSupportedTransactionCurrency> SupportedTransactionCurrencies { get; set; }
+        [JsonProperty(PropertyName = "exchangeRates", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public Dictionary<string, Dictionary<string, decimal>> ExchangeRates { get; set; }
+        [JsonProperty(PropertyName = "refundable", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public bool Refundable { get; set; }
+        [JsonProperty(PropertyName = "taxIncluded", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public decimal? TaxIncluded { get; set; }
+        [JsonProperty(PropertyName = "nonce", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public long Nonce { get; set; }
+        [JsonProperty(PropertyName = "guid", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string Guid { get; set; }
+        [JsonProperty(PropertyName = "token", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        public string Token { get; set; }
+    }
+}

BTCPayServer/Models/PaymentRequestViewModels/ListPaymentRequestsViewModel.cs

@@ -0,0 +1,157 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using BTCPayServer.Services.PaymentRequests;
+using BTCPayServer.Services.Rates;
+using Microsoft.AspNetCore.Mvc.Rendering;
+
+namespace BTCPayServer.Models.PaymentRequestViewModels
+{
+    public class ListPaymentRequestsViewModel
+    {
+        public int Skip { get; set; }
+        public int Count { get; set; }
+
+        public List<ViewPaymentRequestViewModel> Items { get; set; }
+
+        public string StatusMessage { get; set; }
+        public int Total { get; set; }
+    }
+
+    public class UpdatePaymentRequestViewModel
+    {
+        public UpdatePaymentRequestViewModel()
+        {
+        }
+
+        public UpdatePaymentRequestViewModel(PaymentRequestData data)
+        {
+            if (data == null)
+            {
+                return;
+            }
+
+            Id = data.Id;
+            StoreId = data.StoreDataId;
+
+            var blob = data.GetBlob();
+            Title = blob.Title;
+            Amount = blob.Amount;
+            Currency = blob.Currency;
+            Description = blob.Description;
+            ExpiryDate = blob.ExpiryDate;
+            Email = blob.Email;
+            CustomCSSLink = blob.CustomCSSLink;
+            EmbeddedCSS = blob.EmbeddedCSS;
+            AllowCustomPaymentAmounts = blob.AllowCustomPaymentAmounts;
+        }
+
+        public string Id { get; set; }
+        [Required] public string StoreId { get; set; }
+        [Required] public decimal Amount { get; set; }
+
+        [Display(Name = "The currency used for payment request. (e.g. BTC, LTC, USD, etc.)")]
+        public string Currency { get; set; }
+
+        [Display(Name = "Expiration Date")]
+        public DateTime? ExpiryDate { get; set; }
+        [Required] public string Title { get; set; }
+        public string Description { get; set; }
+        public string StatusMessage { get; set; }
+
+        public SelectList Stores { get; set; }
+        [EmailAddress]
+        public string Email { get; set; }
+        
+        [MaxLength(500)]
+        [Display(Name = "Custom bootstrap CSS file")]
+        public string CustomCSSLink { get; set; }
+
+        [Display(Name = "Custom CSS Code")]
+        public string EmbeddedCSS { get; set; }        
+        [Display(Name = "Allow payee to create invoices in their own denomination")]
+        public bool AllowCustomPaymentAmounts { get; set; }
+    }
+
+    public class ViewPaymentRequestViewModel
+    {
+        public ViewPaymentRequestViewModel(PaymentRequestData data)
+        {
+            Id = data.Id;
+            var blob = data.GetBlob();
+            Title = blob.Title;
+            Amount = blob.Amount;
+            Currency = blob.Currency;
+            Description = blob.Description;
+            ExpiryDate = blob.ExpiryDate;
+            Email = blob.Email;
+            EmbeddedCSS = blob.EmbeddedCSS;
+            CustomCSSLink = blob.CustomCSSLink;
+            AllowCustomPaymentAmounts = blob.AllowCustomPaymentAmounts;
+            switch (data.Status)
+            {
+                case PaymentRequestData.PaymentRequestStatus.Pending:
+                    Status = ExpiryDate.HasValue ? $"Expires on {ExpiryDate.Value:g}" : "Pending";
+                    IsPending = true;
+                    break;
+                case PaymentRequestData.PaymentRequestStatus.Completed:
+                    Status = "Settled";
+                    break;
+                case PaymentRequestData.PaymentRequestStatus.Expired:
+                    Status = "Expired";
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+
+        public bool AllowCustomPaymentAmounts { get; set; }
+
+
+        public string Email { get; set; }
+
+        public string Status { get; set; }
+        public bool IsPending { get; set; }
+
+        public decimal AmountCollected { get; set; }
+        public decimal AmountDue { get; set; }
+        public string AmountDueFormatted { get; set; }
+        public decimal Amount { get; set; }
+        public string Id { get; set; }
+        public string Currency { get; set; }
+
+        public DateTime? ExpiryDate { get; set; }
+
+        public string Title { get; set; }
+        public string Description { get; set; }
+        
+        public string EmbeddedCSS { get; set; }
+        public string CustomCSSLink { get; set; }
+
+        public List<PaymentRequestInvoice> Invoices { get; set; } = new List<PaymentRequestInvoice>();
+        public DateTime LastUpdated { get; set; }
+        public CurrencyData CurrencyData { get; set; }
+        public string AmountCollectedFormatted { get; set; }
+        public string AmountFormatted { get; set; }
+        public bool AnyPendingInvoice { get; set; }
+
+        public class PaymentRequestInvoice
+        {
+            public string Id { get; set; }
+            public DateTime ExpiryDate { get; set; }
+            public decimal Amount { get; set; }
+            public string Status { get; set; }
+
+            public List<PaymentRequestInvoicePayment> Payments { get; set; }
+            public string Currency { get; set; }
+        }
+
+        public class PaymentRequestInvoicePayment
+        {
+            public string PaymentMethod { get; set; }
+            public decimal Amount { get; set; }
+            public string Link { get; set; }
+            public string Id { get; set; }
+        }
+    }
+}

BTCPayServer/Models/ServerViewModels/LightningWalletServices.cs

@@ -5,9 +5,10 @@ using System.Threading.Tasks;
 
 namespace BTCPayServer.Models.ServerViewModels
 {
-    public class SparkServicesViewModel
+    public class LightningWalletServices
     {
-        public string SparkLink { get; set; }
+        public string ServiceLink { get; set; }
         public bool ShowQR { get; set; }
+        public string WalletName { get; internal set; }
     }
 }

BTCPayServer/PaymentRequest/PaymentRequestHub.cs

@@ -0,0 +1,175 @@
+using System;
+using System.Linq;
+using Microsoft.Extensions.Logging;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Controllers;
+using BTCPayServer.Events;
+using BTCPayServer.HostedServices;
+using BTCPayServer.Logging;
+using BTCPayServer.Payments;
+using BTCPayServer.Services.PaymentRequests;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.SignalR;
+using BTCPayServer.Services.Apps;
+
+namespace BTCPayServer.PaymentRequest
+{
+    public class PaymentRequestHub : Hub
+    {
+        private readonly PaymentRequestController _PaymentRequestController;
+        public const string InvoiceCreated = "InvoiceCreated";
+        public const string PaymentReceived = "PaymentReceived";
+        public const string InfoUpdated = "InfoUpdated";
+        public const string InvoiceError = "InvoiceError";
+
+        public PaymentRequestHub(PaymentRequestController paymentRequestController)
+        {
+            _PaymentRequestController = paymentRequestController;
+        }
+
+        public async Task ListenToPaymentRequest(string paymentRequestId)
+        {
+            if (Context.Items.ContainsKey("pr-id"))
+            {
+                await Groups.RemoveFromGroupAsync(Context.ConnectionId, Context.Items["pr-id"].ToString());
+                Context.Items.Remove("pr-id");
+            }
+
+            Context.Items.Add("pr-id", paymentRequestId);
+            await Groups.AddToGroupAsync(Context.ConnectionId, paymentRequestId);
+        }
+
+
+        public async Task Pay(decimal? amount = null)
+        {
+            _PaymentRequestController.ControllerContext.HttpContext = Context.GetHttpContext();
+            var result =
+                await _PaymentRequestController.PayPaymentRequest(Context.Items["pr-id"].ToString(), false, amount);
+            switch (result)
+            {
+                case OkObjectResult okObjectResult:
+                    await Clients.Caller.SendCoreAsync(InvoiceCreated, new[] {okObjectResult.Value.ToString()});
+                    break;
+                case ObjectResult objectResult:
+                    await Clients.Caller.SendCoreAsync(InvoiceError, new[] {objectResult.Value});
+                    break;
+                default:
+                    await Clients.Caller.SendCoreAsync(InvoiceError, System.Array.Empty<object>());
+                    break;
+            }
+        }
+    }
+
+    public class PaymentRequestStreamer : EventHostedServiceBase
+    {
+        private readonly IHubContext<PaymentRequestHub> _HubContext;
+        private readonly PaymentRequestRepository _PaymentRequestRepository;
+        private readonly PaymentRequestService _PaymentRequestService;
+
+
+        public PaymentRequestStreamer(EventAggregator eventAggregator,
+            IHubContext<PaymentRequestHub> hubContext,
+            PaymentRequestRepository paymentRequestRepository,
+            PaymentRequestService paymentRequestService) : base(eventAggregator)
+        {
+            _HubContext = hubContext;
+            _PaymentRequestRepository = paymentRequestRepository;
+            _PaymentRequestService = paymentRequestService;
+        }
+
+        public override async Task StartAsync(CancellationToken cancellationToken)
+        {
+            await base.StartAsync(cancellationToken);
+            _CheckingPendingPayments = CheckingPendingPayments(cancellationToken)
+                .ContinueWith(_ => _CheckingPendingPayments = null, TaskScheduler.Default);
+        }
+
+        private async Task CheckingPendingPayments(CancellationToken cancellationToken)
+        {
+            Logs.PayServer.LogInformation("Starting payment request expiration watcher");
+            var (total, items) = await _PaymentRequestRepository.FindPaymentRequests(new PaymentRequestQuery()
+            {
+                Status = new[] {PaymentRequestData.PaymentRequestStatus.Pending}
+            }, cancellationToken);
+
+            Logs.PayServer.LogInformation($"{total} pending payment requests being checked since last run");
+            await Task.WhenAll(items.Select(i => _PaymentRequestService.UpdatePaymentRequestStateIfNeeded(i))
+                .ToArray());
+        }
+
+        Task _CheckingPendingPayments;
+
+        public override async Task StopAsync(CancellationToken cancellationToken)
+        {
+            await base.StopAsync(cancellationToken);
+            await (_CheckingPendingPayments ?? Task.CompletedTask);
+        }
+
+        protected override void SubscibeToEvents()
+        {
+            Subscribe<InvoiceEvent>();
+            Subscribe<PaymentRequestUpdated>();
+        }
+
+        protected override async Task ProcessEvent(object evt, CancellationToken cancellationToken)
+        {
+            if (evt is InvoiceEvent invoiceEvent)
+            {
+                foreach (var paymentId in PaymentRequestRepository.GetPaymentIdsFromInternalTags(invoiceEvent.Invoice))
+                {
+                    if (invoiceEvent.Name == InvoiceEvent.ReceivedPayment)
+                    {
+                        await _PaymentRequestService.UpdatePaymentRequestStateIfNeeded(paymentId);
+                        var data = invoiceEvent.Payment.GetCryptoPaymentData();
+                        await _HubContext.Clients.Group(paymentId).SendCoreAsync(PaymentRequestHub.PaymentReceived,
+                            new object[]
+                            {
+                            data.GetValue(),
+                            invoiceEvent.Payment.GetCryptoCode(),
+                            Enum.GetName(typeof(PaymentTypes),
+                                invoiceEvent.Payment.GetPaymentMethodId().PaymentType)
+                            });
+                    }
+
+                    await InfoUpdated(paymentId);
+                }
+            }
+            else if (evt is PaymentRequestUpdated updated)
+            {
+                await InfoUpdated(updated.PaymentRequestId);
+
+                var expiry = updated.Data.GetBlob().ExpiryDate;
+                if (updated.Data.Status == PaymentRequestData.PaymentRequestStatus.Pending &&
+                    expiry.HasValue)
+                {
+                    QueueExpiryTask(
+                        updated.PaymentRequestId,
+                        expiry.Value,
+                        cancellationToken);
+                }
+            }
+        }
+
+        private void QueueExpiryTask(string paymentRequestId, DateTime expiry, CancellationToken cancellationToken)
+        {
+            Task.Run(async () =>
+            {
+                var delay = expiry - DateTime.Now;
+                if (delay > TimeSpan.Zero)
+                    await Task.Delay(delay, cancellationToken);
+                await _PaymentRequestService.UpdatePaymentRequestStateIfNeeded(paymentRequestId);
+            }, cancellationToken);
+        }
+
+        private async Task InfoUpdated(string paymentRequestId)
+        {
+            var req = await _PaymentRequestService.GetPaymentRequest(paymentRequestId);
+            if (req != null)
+            {
+                await _HubContext.Clients.Group(paymentRequestId)
+                    .SendCoreAsync(PaymentRequestHub.InfoUpdated, new object[] {req});
+            }
+        }
+    }
+}

BTCPayServer/PaymentRequest/PaymentRequestService.cs

@@ -0,0 +1,136 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Threading.Tasks;
+using BTCPayServer.Models.PaymentRequestViewModels;
+using BTCPayServer.Payments.Lightning;
+using BTCPayServer.Services.Apps;
+using BTCPayServer.Services.Invoices;
+using BTCPayServer.Services.PaymentRequests;
+using BTCPayServer.Services.Rates;
+using Microsoft.AspNetCore.SignalR;
+
+namespace BTCPayServer.PaymentRequest
+{
+    public class PaymentRequestService
+    {
+        private readonly PaymentRequestRepository _PaymentRequestRepository;
+        private readonly BTCPayNetworkProvider _BtcPayNetworkProvider;
+        private readonly AppService _AppService;
+        private readonly CurrencyNameTable _currencies;
+
+        public PaymentRequestService(
+            IHubContext<PaymentRequestHub> hubContext,
+            PaymentRequestRepository paymentRequestRepository,
+            BTCPayNetworkProvider btcPayNetworkProvider,
+            AppService appService,
+            CurrencyNameTable currencies)
+        {
+            _PaymentRequestRepository = paymentRequestRepository;
+            _BtcPayNetworkProvider = btcPayNetworkProvider;
+            _AppService = appService;
+            _currencies = currencies;
+        }
+
+        public async Task UpdatePaymentRequestStateIfNeeded(string id)
+        {
+            var pr = await _PaymentRequestRepository.FindPaymentRequest(id, null);
+            await UpdatePaymentRequestStateIfNeeded(pr);
+        }
+
+        public async Task UpdatePaymentRequestStateIfNeeded(PaymentRequestData pr)
+        {
+            var blob = pr.GetBlob();
+            var currentStatus = pr.Status;
+            if (blob.ExpiryDate.HasValue)
+            {
+                if (blob.ExpiryDate.Value <= DateTimeOffset.UtcNow)
+                    currentStatus = PaymentRequestData.PaymentRequestStatus.Expired;
+            }
+            else if (pr.Status == PaymentRequestData.PaymentRequestStatus.Pending)
+            {
+                var rateRules = pr.StoreData.GetStoreBlob().GetRateRules(_BtcPayNetworkProvider);
+                var invoices = await _PaymentRequestRepository.GetInvoicesForPaymentRequest(pr.Id);
+                var paymentStats = _AppService.GetCurrentContributionAmountStats(invoices, true);
+                var amountCollected =
+                    await _AppService.GetCurrentContributionAmount(paymentStats, blob.Currency, rateRules);
+                if (amountCollected >= blob.Amount)
+                {
+                    currentStatus = PaymentRequestData.PaymentRequestStatus.Completed;
+                }
+            }
+
+            if (currentStatus != pr.Status)
+            {
+                pr.Status = currentStatus;
+                await _PaymentRequestRepository.UpdatePaymentRequestStatus(pr.Id, currentStatus);
+            }
+        }
+
+        public async Task<ViewPaymentRequestViewModel> GetPaymentRequest(string id, string userId = null)
+        {
+            var pr = await _PaymentRequestRepository.FindPaymentRequest(id, null);
+            if (pr == null)
+            {
+                return null;
+            }
+
+            var blob = pr.GetBlob();
+            var rateRules = pr.StoreData.GetStoreBlob().GetRateRules(_BtcPayNetworkProvider);
+
+            var invoices = await _PaymentRequestRepository.GetInvoicesForPaymentRequest(id);
+
+            var paymentStats = _AppService.GetCurrentContributionAmountStats(invoices, true);
+            var amountCollected =
+                await _AppService.GetCurrentContributionAmount(paymentStats, blob.Currency, rateRules);
+
+            var amountDue = blob.Amount - amountCollected;
+
+            return new ViewPaymentRequestViewModel(pr)
+            {
+                AmountFormatted = _currencies.FormatCurrency(blob.Amount, blob.Currency),
+                AmountCollected = amountCollected,
+                AmountCollectedFormatted = _currencies.FormatCurrency(amountCollected, blob.Currency),
+                AmountDue = amountDue,
+                AmountDueFormatted = _currencies.FormatCurrency(amountDue, blob.Currency),
+                CurrencyData = _currencies.GetCurrencyData(blob.Currency, true),
+                LastUpdated = DateTime.Now,
+                AnyPendingInvoice = invoices.Any(entity => entity.Status == InvoiceStatus.New),
+                Invoices = invoices.Select(entity => new ViewPaymentRequestViewModel.PaymentRequestInvoice()
+                {
+                    Id = entity.Id,
+                    Amount = entity.ProductInformation.Price,
+                    Currency = entity.ProductInformation.Currency,
+                    ExpiryDate = entity.ExpirationTime.DateTime,
+                    Status = entity.GetInvoiceState().ToString(),
+                    Payments = entity.GetPayments().Select(paymentEntity =>
+                    {
+                        var paymentNetwork = _BtcPayNetworkProvider.GetNetwork(paymentEntity.GetCryptoCode());
+                        var paymentData = paymentEntity.GetCryptoPaymentData();
+                        string link = null;
+                        string txId = null;
+                        switch (paymentData)
+                        {
+                            case Payments.Bitcoin.BitcoinLikePaymentData onChainPaymentData:
+                                txId = onChainPaymentData.Outpoint.Hash.ToString();
+                                link = string.Format(CultureInfo.InvariantCulture, paymentNetwork.BlockExplorerLink,
+                                    txId);
+                                break;
+                            case LightningLikePaymentData lightningLikePaymentData:
+                                txId = lightningLikePaymentData.BOLT11;
+                                break;
+                        }
+
+                        return new ViewPaymentRequestViewModel.PaymentRequestInvoicePayment()
+                        {
+                            Amount = paymentData.GetValue(),
+                            PaymentMethod = paymentEntity.GetPaymentMethodId().ToString(),
+                            Link = link,
+                            Id = txId
+                        };
+                    }).ToList()
+                }).ToList()
+            };
+        }
+    }
+}

BTCPayServer/Payments/IPaymentFilter.cs

@@ -12,6 +12,21 @@ namespace BTCPayServer.Payments
 
     public class PaymentFilter
     {
+        class OrPaymentFilter : IPaymentFilter
+        {
+            private readonly IPaymentFilter _a;
+            private readonly IPaymentFilter _b;
+
+            public OrPaymentFilter(IPaymentFilter a, IPaymentFilter b)
+            {
+                _a = a;
+                _b = b;
+            }
+            public bool Match(PaymentMethodId paymentMethodId)
+            {
+                return _a.Match(paymentMethodId) || _b.Match(paymentMethodId);
+            }
+        }
         class NeverPaymentFilter : IPaymentFilter
         {
 
@@ -54,6 +69,34 @@ namespace BTCPayServer.Payments
                 return paymentMethodId == _paymentMethodId;
             }
         }
+        class PredicateFilter : IPaymentFilter
+        {
+            private Func<PaymentMethodId, bool> predicate;
+
+            public PredicateFilter(Func<PaymentMethodId, bool> predicate)
+            {
+                this.predicate = predicate;
+            }
+
+            public bool Match(PaymentMethodId paymentMethodId)
+            {
+                return this.predicate(paymentMethodId);
+            }
+        }
+        public static IPaymentFilter Where(Func<PaymentMethodId, bool> predicate)
+        {
+            if (predicate == null)
+                throw new ArgumentNullException(nameof(predicate));
+            return new PredicateFilter(predicate);
+        }
+        public static IPaymentFilter Or(IPaymentFilter a, IPaymentFilter b)
+        {
+            if (a == null)
+                throw new ArgumentNullException(nameof(a));
+            if (b == null)
+                throw new ArgumentNullException(nameof(b));
+            return new OrPaymentFilter(a, b);
+        }
         public static IPaymentFilter Never()
         {
             return NeverPaymentFilter.Instance;

BTCPayServer/Payments/PaymentMethodId.cs

@@ -67,10 +67,37 @@ namespace BTCPayServer.Payments
             return CryptoCode + "_" + PaymentType.ToString();
         }
 
+        public static bool TryParse(string str, out PaymentMethodId paymentMethodId)
+        {
+            paymentMethodId = null;
+            var parts = str.Split('_', StringSplitOptions.RemoveEmptyEntries);
+            if (parts.Length == 0 || parts.Length > 2)
+                return false;
+            PaymentTypes type = PaymentTypes.BTCLike;
+            if (parts.Length == 2)
+            {
+                switch (parts[1].ToLowerInvariant())
+                {
+                    case "btclike":
+                    case "onchain":
+                        type = PaymentTypes.BTCLike;
+                        break;
+                    case "lightninglike":
+                    case "offchain":
+                        type = PaymentTypes.LightningLike;
+                        break;
+                    default:
+                        return false;
+                }
+            }
+            paymentMethodId = new PaymentMethodId(parts[0], type);
+            return true;
+        }
         public static PaymentMethodId Parse(string str)
         {
-            var parts = str.Split('_');
-            return new PaymentMethodId(parts[0], parts.Length == 1 ? PaymentTypes.BTCLike : Enum.Parse<PaymentTypes>(parts[1]));
+            if (!TryParse(str, out var result))
+                throw new FormatException("Invalid PaymentMethodId");
+            return result;
         }
     }
 }

BTCPayServer/Services/Apps/AppHubStreamer.cs

@@ -47,7 +47,7 @@ namespace BTCPayServer.Services.Apps
         {
             if (evt is InvoiceEvent invoiceEvent)
             {
-                foreach (var appId in AppService.GetAppInternalTags(invoiceEvent.Invoice.InternalTags))
+                foreach (var appId in AppService.GetAppInternalTags(invoiceEvent.Invoice))
                 {
                     if (invoiceEvent.Name == InvoiceEvent.ReceivedPayment)
                     {

BTCPayServer/Services/Apps/AppService.cs

@@ -167,11 +167,9 @@ namespace BTCPayServer.Services.Apps
 
         public static string GetCrowdfundOrderId(string appId) => $"crowdfund-app_{appId}";
         public static string GetAppInternalTag(string appId) => $"APP#{appId}";
-        public static string[] GetAppInternalTags(IEnumerable<string> tags)
+        public static string[] GetAppInternalTags(InvoiceEntity invoice)
         {
-            return tags == null ? Array.Empty<string>() : tags
-                                                  .Where(t => t.StartsWith("APP#", StringComparison.InvariantCulture))
-                                                  .Select(t => t.Substring("APP#".Length)).ToArray();
+            return invoice.GetInternalTags("APP#");
         }
         private async Task<InvoiceEntity[]> GetInvoicesForApp(AppData appData, DateTime? startDate = null)
         {
@@ -346,7 +344,7 @@ namespace BTCPayServer.Services.Apps
 
                     // Else, we just sum the payments
                     return payments
-                             .Select(pay => (Key: pay.GetPaymentMethodId().ToString(), Value: pay.GetCryptoPaymentData().GetValue()))
+                             .Select(pay => (Key: pay.GetPaymentMethodId().ToString(), Value: pay.GetCryptoPaymentData().GetValue() - pay.NetworkFee))
                              .ToArray();
                 })
                 .GroupBy(p => p.Key)

BTCPayServer/Services/Invoices/InvoiceEntity.cs

@@ -114,7 +114,8 @@ namespace BTCPayServer.Services.Invoices
     public class InvoiceEntity
     {
         public const int InternalTagSupport_Version = 1;
-        public int Version { get; set; } = 1;
+        public const int Lastest_Version = 1;
+        public int Version { get; set; }
         public string Id
         {
             get; set;
@@ -168,6 +169,13 @@ namespace BTCPayServer.Services.Invoices
 
         [JsonProperty(DefaultValueHandling = DefaultValueHandling.Ignore)]
         public HashSet<string> InternalTags { get; set; } = new HashSet<string>();
+
+        public string[] GetInternalTags(string suffix)
+        {
+            return InternalTags == null ? Array.Empty<string>() : InternalTags
+                                                  .Where(t => t.StartsWith(suffix, StringComparison.InvariantCulture))
+                                                  .Select(t => t.Substring(suffix.Length)).ToArray();
+        }
         
         [Obsolete("Use GetDerivationStrategies instead")]
         public string DerivationStrategy

BTCPayServer/Services/PaymentRequests/PaymentRequestRepository.cs

@@ -0,0 +1,254 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Data;
+using BTCPayServer.Services.Invoices;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Internal;
+using NBitcoin;
+using NBXplorer;
+using Newtonsoft.Json.Linq;
+
+namespace BTCPayServer.Services.PaymentRequests
+{
+    public class PaymentRequestRepository
+    {
+        private readonly ApplicationDbContextFactory _ContextFactory;
+        private readonly InvoiceRepository _InvoiceRepository;
+
+        public PaymentRequestRepository(ApplicationDbContextFactory contextFactory, InvoiceRepository invoiceRepository)
+        {
+            _ContextFactory = contextFactory;
+            _InvoiceRepository = invoiceRepository;
+        }
+
+
+        public async Task<PaymentRequestData> CreateOrUpdatePaymentRequest(PaymentRequestData entity)
+        {
+            using (var context = _ContextFactory.CreateContext())
+            {
+                if (string.IsNullOrEmpty(entity.Id))
+                {
+                    await context.PaymentRequests.AddAsync(entity);
+                }
+                else
+                {
+                    context.PaymentRequests.Update(entity);
+                }
+
+                await context.SaveChangesAsync();
+                return entity;
+            }
+        }
+
+        public async Task<PaymentRequestData> FindPaymentRequest(string id, string userId, CancellationToken cancellationToken = default)
+        {
+            if (string.IsNullOrEmpty(id))
+            {
+                return null;
+            }
+
+            using (var context = _ContextFactory.CreateContext())
+            {
+                return await context.PaymentRequests.Include(x => x.StoreData)
+                    .Where(data =>
+                        string.IsNullOrEmpty(userId) ||
+                        (data.StoreData != null && data.StoreData.UserStores.Any(u => u.ApplicationUserId == userId)))
+                    .SingleOrDefaultAsync(x => x.Id == id, cancellationToken);
+            }
+        }
+
+        public async Task<bool> IsPaymentRequestAdmin(string paymentRequestId, string userId)
+        {
+            if (string.IsNullOrEmpty(userId) || string.IsNullOrEmpty(paymentRequestId))
+            {
+                return false;
+            }
+            using (var context = _ContextFactory.CreateContext())
+            {
+                return await context.PaymentRequests.Include(x => x.StoreData)
+                    .AnyAsync(data =>
+                        data.Id == paymentRequestId &&
+                        (data.StoreData != null && data.StoreData.UserStores.Any(u => u.ApplicationUserId == userId)));
+            }
+        }
+        
+        public async Task UpdatePaymentRequestStatus(string paymentRequestId, PaymentRequestData.PaymentRequestStatus status, CancellationToken cancellationToken = default)
+        {
+            using (var context = _ContextFactory.CreateContext())
+            {
+                var invoiceData = await context.FindAsync<PaymentRequestData>(paymentRequestId);
+                if (invoiceData == null)
+                    return;
+                invoiceData.Status = status;
+                await context.SaveChangesAsync(cancellationToken);
+            }
+        }
+
+        public async Task<(int Total, PaymentRequestData[] Items)> FindPaymentRequests(PaymentRequestQuery query, CancellationToken cancellationToken = default)
+        {
+            using (var context = _ContextFactory.CreateContext())
+            {
+                var queryable = context.PaymentRequests.Include(data => data.StoreData).AsQueryable();
+                if (!string.IsNullOrEmpty(query.StoreId))
+                {
+                    queryable = queryable.Where(data =>
+                       data.StoreDataId.Equals(query.StoreId, StringComparison.InvariantCulture));
+                }
+
+                if (query.Status != null && query.Status.Any())
+                {
+                    queryable = queryable.Where(data =>
+                        query.Status.Contains(data.Status));
+                }
+
+                if (!string.IsNullOrEmpty(query.UserId))
+                {
+                    queryable = queryable.Where(i =>
+                        i.StoreData != null && i.StoreData.UserStores.Any(u => u.ApplicationUserId == query.UserId));
+                }
+
+                var total = await queryable.CountAsync(cancellationToken);
+                
+                if (query.Skip.HasValue)
+                {
+                    queryable = queryable.Skip(query.Skip.Value);
+                }
+
+                if (query.Count.HasValue)
+                {
+                    queryable = queryable.Take(query.Count.Value);
+                }
+
+                return (total, await queryable.ToArrayAsync(cancellationToken));
+            }
+        }
+
+        public async Task<bool> RemovePaymentRequest(string id, string userId)
+        {
+            using (var context = _ContextFactory.CreateContext())
+            {
+                var canDelete = !EnumerableExtensions.Any((await GetInvoicesForPaymentRequest(id)));
+                if (!canDelete) return false;
+                var pr = await FindPaymentRequest(id, userId);
+                if (pr == null)
+                {
+                    return false;
+                }
+
+                context.PaymentRequests.Remove(pr);
+                await context.SaveChangesAsync();
+
+                return true;
+            }
+        }
+
+        public async Task<InvoiceEntity[]> GetInvoicesForPaymentRequest(string paymentRequestId,
+            InvoiceQuery invoiceQuery = null)
+        {
+            if (invoiceQuery == null)
+            {
+                invoiceQuery = new InvoiceQuery();
+            }
+
+            invoiceQuery.OrderId = new[] {GetOrderIdForPaymentRequest(paymentRequestId)};
+            return await _InvoiceRepository.GetInvoices(invoiceQuery);
+        }
+
+        public static string GetOrderIdForPaymentRequest(string paymentRequestId)
+        {
+            return $"PAY_REQUEST_{paymentRequestId}";
+        }
+
+        public static string GetPaymentRequestIdFromOrderId(string invoiceOrderId)
+        {
+            if (string.IsNullOrEmpty(invoiceOrderId) ||
+                !invoiceOrderId.StartsWith("PAY_REQUEST_", StringComparison.InvariantCulture))
+            {
+                return null;
+            }
+
+            return invoiceOrderId.Replace("PAY_REQUEST_", "", StringComparison.InvariantCulture);
+        }
+
+        public static string GetInternalTag(string id)
+        {
+            return $"PAYREQ#{id}";
+        }
+        public static string[] GetPaymentIdsFromInternalTags(InvoiceEntity invoiceEntity)
+        {
+            return invoiceEntity.GetInternalTags("PAYREQ#");
+        }
+    }
+
+    public class PaymentRequestUpdated
+    {
+        public string PaymentRequestId { get; set; }
+        public PaymentRequestData Data { get; set; }
+    }
+
+    public class PaymentRequestQuery
+    {
+        public string StoreId { get; set; }
+        
+        public PaymentRequestData.PaymentRequestStatus[] Status{ get; set; }
+        public string UserId { get; set; }
+        public int? Skip { get; set; }
+        public int? Count { get; set; }
+    }
+
+    public class PaymentRequestData
+    {
+        public string Id { get; set; }
+        public string StoreDataId { get; set; }
+
+        public StoreData StoreData { get; set; }
+
+        public PaymentRequestStatus Status { get; set; }
+
+        public byte[] Blob { get; set; }
+
+        public PaymentRequestBlob GetBlob()
+        {
+            var result = Blob == null
+                ? new PaymentRequestBlob()
+                : JObject.Parse(ZipUtils.Unzip(Blob)).ToObject<PaymentRequestBlob>();
+            return result;
+        }
+
+        public bool SetBlob(PaymentRequestBlob blob)
+        {
+            var original = new Serializer(Network.Main).ToString(GetBlob());
+            var newBlob = new Serializer(Network.Main).ToString(blob);
+            if (original == newBlob)
+                return false;
+            Blob = ZipUtils.Zip(newBlob);
+            return true;
+        }
+
+        public class PaymentRequestBlob
+        {
+            public decimal Amount { get; set; }
+            public string Currency { get; set; }
+
+            public DateTime? ExpiryDate { get; set; }
+
+            public string Title { get; set; }
+            public string Description { get; set; }
+            public string Email { get; set; }
+
+            public string EmbeddedCSS { get; set; }
+            public string CustomCSSLink { get; set; }
+            public bool AllowCustomPaymentAmounts { get; set; }
+        }
+
+        public enum PaymentRequestStatus
+        {
+            Pending = 0,
+            Completed = 1,
+            Expired = 2
+        }
+    }
+}

BTCPayServer/Services/Rates/BackgroundFetcherRateProvider.cs

@@ -16,6 +16,7 @@ namespace BTCPayServer.Services.Rates
         {
             public ExchangeRates Latest;
             public DateTimeOffset NextRefresh;
+            public TimeSpan Backoff = TimeSpan.FromSeconds(5.0); 
             public DateTimeOffset Expiration;
             public Exception Exception;
             public string ExchangeName;
@@ -90,6 +91,7 @@ namespace BTCPayServer.Services.Rates
         }
 
         public bool DoNotAutoFetchIfExpired { get; set; }
+        readonly static TimeSpan MaxBackoff = TimeSpan.FromMinutes(5.0);
 
         public async Task<LatestFetch> UpdateIfNecessary()
         {
@@ -142,12 +144,15 @@ namespace BTCPayServer.Services.Rates
                 {
                     fetch.Latest = previous.Latest;
                     fetch.Expiration = previous.Expiration;
+                    fetch.Backoff = previous.Backoff * 2;
+                    if (fetch.Backoff > MaxBackoff)
+                        fetch.Backoff = MaxBackoff;
                 }
                 else
                 {
                     fetch.Expiration = DateTimeOffset.UtcNow;
                 }
-                fetch.NextRefresh = DateTimeOffset.UtcNow;
+                fetch.NextRefresh = DateTimeOffset.UtcNow + fetch.Backoff;
                 fetch.Exception = ex;
             }
             _Latest = fetch;

BTCPayServer/Services/Rates/CurrencyNameTable.cs

@@ -130,19 +130,7 @@ namespace BTCPayServer.Services.Rates
             var provider = GetNumberFormatInfo(currency, true);
             var currencyData = GetCurrencyData(currency, true);
             var divisibility = currencyData.Divisibility;
-            if (value != 0m)
-            {
-                while (true)
-                {
-                    var rounded = decimal.Round(value, divisibility, MidpointRounding.AwayFromZero);
-                    if ((Math.Abs(rounded - value) / value) < 0.001m)
-                    {
-                        value = rounded;
-                        break;
-                    }
-                    divisibility++;
-                }
-            }
+            value = value.RoundToSignificant(ref divisibility);
             if (divisibility != provider.CurrencyDecimalDigits)
             {
                 provider = (NumberFormatInfo)provider.Clone();

BTCPayServer/Views/Apps/ListApps.cshtml

@@ -1,7 +1,7 @@
 @using BTCPayServer.Services.Apps
 @model ListAppsViewModel
 @{
-    ViewData["Title"] = "Stores";
+    ViewData["Title"] = "Apps";
 }
 
 <section>

BTCPayServer/Views/Apps/UpdateCrowdfund.cshtml

@@ -15,7 +15,7 @@
                 </div>
                 <div class="modal-body">
                 </div>
-                <div class="modal-footer">
+                <div class="modal-footer">PRS
                     <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                     <button type="button" class="js-product-save btn btn-primary">Save Changes</button>
                 </div>

BTCPayServer/Views/Apps/UpdatePointOfSale.cshtml

@@ -57,6 +57,14 @@
                         <label asp-for="ShowCustomAmount"></label>
                         <input asp-for="ShowCustomAmount" type="checkbox" class="form-check" />
                     </div>
+                    <div class="form-group">
+                        <label asp-for="ShowDiscount"></label>
+                        <input asp-for="ShowDiscount" type="checkbox" class="form-check" />
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="EnableTips"></label>
+                        <input asp-for="EnableTips" type="checkbox" class="form-check" />
+                    </div>
                     <div class="form-group">
                         <label asp-for="ButtonText" class="control-label"></label>*
                         <input asp-for="ButtonText" class="form-control" />

BTCPayServer/Views/AppsPublic/ViewCrowdfund.cshtml

@@ -32,7 +32,7 @@
     {
         <style>
             @Html.Raw(Model.EmbeddedCSS); 
-            </style>
+        </style>
     }
 
 </head>

BTCPayServer/Views/AppsPublic/ViewPointOfSale.cshtml

@@ -93,6 +93,8 @@
         </div>
     </td>
 </tr>
+@if (Model.ShowDiscount)
+{
 <tr>
     <td colspan="5" class="border-top-0">
         <div class="input-group">
@@ -106,9 +108,12 @@
         </div>
     </td>
 </tr>
+}
 </script>
 
 <script id="template-cart-tip" type="text/template">
+@if (Model.EnableTips)
+{
 <tr class="h5">
     <td colspan="5" class="border-top-0 pt-4">@Model.CustomTipText</td>
 </tr>
@@ -135,6 +140,7 @@
         </div>
     </td>
 </tr>
+}
 </script>
 
 <script id="template-cart-total" type="text/template">
@@ -170,18 +176,24 @@
                                     <span class="js-cart-summary-products text-nowrap"></span>
                                 </td>
                             </tr>
+                            @if (Model.ShowDiscount) 
+                            {
                             <tr class="h6">
                                 <td class="border-0 pb-y">Discount</td>
                                 <td align="right" class="border-0 pb-y">
                                     <span class="js-cart-summary-discount text-nowrap"></span>
                                 </td>
                             </tr>
+                            }
+                            @if (Model.EnableTips) 
+                            {
                             <tr class="h6">
                                 <td class="border-top-0 pt-0">Tip</td>
                                 <td align="right" class="border-top-0 pt-0">
                                     <span class="js-cart-summary-tip text-nowrap"></span>
                                 </td>
                             </tr>
+                            }
                             <tr class="h3 table-light">
                                 <td>Total</td>
                                 <td align="right">

BTCPayServer/Views/Home/Home.cshtml

@@ -10,7 +10,7 @@
             <h1>Welcome to BTCPay Server</h1>
             <hr />
             <p>BTCPay Server is a free and open source server for merchants wanting to accept Bitcoin for their business.</p>
-            <a style="background-color: #fff;color: #222;display:inline-block;text-align: center;white-space: nowrap;vertical-align: middle;user-select: none;line-height: 1.25;font-size: 1rem;text-decoration:none;font-weight: 700;    text-transform: uppercase;border: none;border-radius: 300px;padding: 15px 30px;" href="https://docs.btcpayserver.org">Getting started</a>
+            <a style="background-color: #fff;color: #222;display:inline-block;text-align: center;white-space: nowrap;vertical-align: middle;user-select: none;line-height: 1.25;font-size: 1rem;text-decoration:none;font-weight: 700;    text-transform: uppercase;border: none;border-radius: 300px;padding: 15px 30px;" href="https://btcpayserver.org" target="_blank">Official website</a>
         </div>
     </div>
 </header>
@@ -128,13 +128,19 @@
             </div>
         </div>
         <div class="row">
-            <div class="col-lg-4 ml-auto text-center">
-                <a href="http://slack.forkbitpay.ninja/">
+            <div class="col-lg-3 ml-auto text-center">
+                <a href="https://chat.btcpayserver.org/">
+                    <img src="~/img/mattermost.png" height="100" />
+                </a>
+                <p><a href="https://chat.btcpayserver.org/">On Mattermost</a></p>
+            </div>
+            <div class="col-lg-3 ml-auto text-center">
+                <a href="https://slack.btcpayserver.org/">
                     <img src="~/img/slack.png" height="100" />
                 </a>
                 <p><a href="http://slack.forkbitpay.ninja/">On Slack</a></p>
             </div>
-            <div class="col-lg-4 mr-auto text-center">
+            <div class="col-lg-3 mr-auto text-center">
                 <a href="https://twitter.com/BtcpayServer">
                     <img src="~/img/twitter.png" height="100" />
                 </a>
@@ -142,7 +148,7 @@
                     <a href="https://twitter.com/BtcpayServer">On Twitter</a>
                 </p>
             </div>
-            <div class="col-lg-4 mr-auto text-center">
+            <div class="col-lg-3 mr-auto text-center">
                 <a href="https://github.com/btcpayserver/btcpayserver">
                     <img src="~/img/github.png" height="100" />
                 </a>

BTCPayServer/Views/Invoice/Checkout-Body.cshtml

@@ -45,11 +45,13 @@
         <div class="single-item-order__right">
             @if (Model.AvailableCryptos.Count > 1)
             {
-                <div class="payment__currencies cursorPointer" onclick="openPaymentMethodDialog()">
-                    <img v-bind:src="srvModel.cryptoImage" />
-                    <span class="clickable_underline">{{srvModel.paymentMethodName}} ({{srvModel.cryptoCode}})</span>
-                    <span v-show="srvModel.isLightning">&#9889;</span>
-                    <span class="clickable_indicator fa fa-angle-right"></span>
+                <div class="paywithRowRight cursorPointer" onclick="openPaymentMethodDialog()">
+                    <span class="payment__currencies ">
+                        <img v-bind:src="srvModel.cryptoImage" />
+                        <span>{{srvModel.paymentMethodName}} ({{srvModel.cryptoCode}})</span>
+                        <span v-show="srvModel.isLightning">&#9889;</span>
+                        <span class="clickable_indicator fa fa-angle-right"></span>
+                    </span>
                 </div>
                 <div id="vexPopupDialog">
                     <ul class="vexmenu">

BTCPayServer/Views/Invoice/ListInvoices.cshtml

@@ -1,7 +1,6 @@
 @model InvoicesModel
 @{
     ViewData["Title"] = "Invoices";
-    var rootUrl = Context.Request.GetAbsoluteRoot();
 }
 
 @section HeadScripts {

BTCPayServer/Views/PaymentRequest/EditPaymentRequest.cshtml

@@ -0,0 +1,122 @@
+@using BTCPayServer.Services.PaymentRequests
+@model BTCPayServer.Models.PaymentRequestViewModels.UpdatePaymentRequestViewModel
+@addTagHelper *, Meziantou.AspNetCore.BundleTagHelpers
+
+<section>
+    <div class="container">
+        <div class="row">
+            <div class="col-lg-12 text-center">
+                <h2 class="section-heading">@(string.IsNullOrEmpty(Model.Id) ? "Create" : "Edit") Payment Request</h2>
+                <hr class="primary">
+            </div>
+        </div>
+        <div class="row">
+            <div class="col-lg-12 text-center">
+                <partial name="_StatusMessage" for="StatusMessage"/>
+            </div>
+        </div>
+        <div class="row">
+            <div class="col-lg-12">
+                <form method="post">
+                    <input type="hidden" asp-for="Id"/>
+                    <div asp-validation-summary="ModelOnly" class="text-danger"></div>
+                    <div class="form-group">
+                        <label asp-for="Title" class="control-label"></label>*
+                        <input asp-for="Title" class="form-control"/>
+                        <span asp-validation-for="Title" class="text-danger"></span>
+                    </div>
+
+                    <div class="form-group">
+                        <label asp-for="Amount" class="control-label"></label>*
+                        <input type="number" step="any" asp-for="Amount" class="form-control"/>
+                        <span asp-validation-for="Amount" class="text-danger"></span>
+                    </div>
+
+                    <div class="form-group">
+                        <label asp-for="Currency" class="control-label"></label>*
+                        <input placeholder="BTC" asp-for="Currency" class="form-control"/>
+                        <span asp-validation-for="Currency" class="text-danger"></span>
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="AllowCustomPaymentAmounts"></label>
+                        <input asp-for="AllowCustomPaymentAmounts" type="checkbox" class="form-check"/>
+                        <span asp-validation-for="AllowCustomPaymentAmounts" class="text-danger"></span>
+                    </div>
+                    <div class="form-group">
+
+                        <label asp-for="StoreId" class="control-label"></label>
+                        @if (string.IsNullOrEmpty(Model.Id))
+                        {
+                            <select asp-for="StoreId" asp-items="Model.Stores" class="form-control"></select>
+                        }
+                        else
+                        {
+                            <input type="hidden" asp-for="StoreId" value="@Model.StoreId"/>
+                            <input type="text" class="form-control" value="@Model.Stores.Single(item => item.Value == Model.StoreId).Text" readonly/>
+                        }
+
+                        <span asp-validation-for="StoreId" class="text-danger"></span>
+
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="Email" class="control-label"></label>
+                        <input type="email" asp-for="Email" class="form-control"></input>
+                        <span asp-validation-for="Email" class="text-danger"></span>
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="ExpiryDate" class="control-label"></label>
+                        <div class="input-group ">
+                            <input asp-for="ExpiryDate" class="form-control datetime" min="today"/>
+                            <div class="input-group-append only-for-js">
+
+                                <button class="btn btn-secondary input-group-clear" type="button" title="Clear">
+                                    <span class=" fa fa-times"></span>
+                                </button>
+                            </div>
+                        </div>
+                        <span asp-validation-for="ExpiryDate" class="text-danger"></span>
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="Description" class="control-label"></label>
+                        <textarea asp-for="Description" class="form-control richtext"></textarea>
+                        <span asp-validation-for="Description" class="text-danger"></span>
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="CustomCSSLink" class="control-label"></label>
+                        <a href="https://docs.btcpayserver.org/development/theme#bootstrap-themes" target="_blank">
+                            <span class="fa fa-question-circle-o" title="More information..."></span>
+                        </a>
+                        <input asp-for="CustomCSSLink" class="form-control"/>
+                        <span asp-validation-for="CustomCSSLink" class="text-danger"></span>
+                    </div>
+                    <div class="form-group">
+                        <label asp-for="EmbeddedCSS" class="control-label"></label>
+                        <textarea asp-for="EmbeddedCSS" rows="10" cols="40" class="form-control"></textarea>
+                        <span asp-validation-for="EmbeddedCSS" class="text-danger"></span>
+                    </div>
+
+                    <div class="form-group">
+                        <button type="submit" class="btn btn-primary">Save</button>
+                        @if (!string.IsNullOrEmpty(Model.Id))
+                        {
+                            <a class="btn btn-secondary" target="_blank" asp-action="ViewPaymentRequest" id="@Model.Id">View</a>
+                            <a class="btn btn-secondary" 
+                               target="_blank"
+                               asp-action="ListInvoices"
+                               asp-controller="Invoice" 
+                               asp-route-searchterm="@($"orderid:{PaymentRequestRepository.GetOrderIdForPaymentRequest(Model.Id)}")">Invoices</a>
+                                                                                                                   
+                        }
+                        <a class="btn btn-secondary" target="_blank" asp-action="GetPaymentRequests">Back to list</a>
+                    </div>
+                </form>
+            </div>
+        </div>
+    </div>
+</section>
+
+@section Scripts {
+
+    <bundle name="wwwroot/bundles/payment-request-admin-bundle.min.js"></bundle>
+    <bundle name="wwwroot/bundles/payment-request-admin-bundle.min.css"></bundle>
+}

BTCPayServer/Views/PaymentRequest/GetPaymentRequests.cshtml

@@ -0,0 +1,88 @@
+@using BTCPayServer.Services.PaymentRequests
+@model BTCPayServer.Models.PaymentRequestViewModels.ListPaymentRequestsViewModel
+
+@{
+    Layout = "_Layout";
+}
+
+<section>
+    <div class="container">
+
+        <div class="row">
+            <div class="col-lg-12 text-center">
+                <partial name="_StatusMessage" for="StatusMessage"/>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-lg-12 text-center">
+                <h2 class="section-heading">Payment Requests</h2>
+            </div>
+        </div>
+
+        <div class="row no-gutter" style="margin-bottom: 5px;">
+            <div class="col-lg-6">
+                <a asp-action="EditPaymentRequest" class="btn btn-primary" role="button"><span class="fa fa-plus"></span> Create a new payment request</a>
+            </div>
+        </div>
+
+        <div class="row">
+            <table class="table table-sm table-responsive-md">
+                <thead>
+                <tr>
+                    <th>Title</th>
+                    <th>Expiry</th>
+                    <th class="text-right">Price</th>
+                    <th class="text-right">Status</th>
+                    <th class="text-right">Actions</th>
+                </tr>
+                </thead>
+                <tbody>
+                @foreach (var item in Model.Items)
+                {
+                    <tr>
+                        <td>@item.Title</td>
+                        <td>@(item.ExpiryDate?.ToString("g") ?? "No Expiry")</td>
+                        <td class="text-right">@item.Amount @item.Currency</td>
+                        <td class="text-right">@item.Status</td>
+                        <td class="text-right">
+                            <a asp-action="EditPaymentRequest" asp-route-id="@item.Id">Edit</a>
+                            <span> - </span>
+                            <a asp-action="ViewPaymentRequest" asp-route-id="@item.Id">View</a>
+                            <span> - </span>
+                            <a target="_blank" asp-action="ListInvoices" asp-controller="Invoice" asp-route-searchterm="@($"orderid:{PaymentRequestRepository.GetOrderIdForPaymentRequest(item.Id)}")">Invoices</a>
+                            <span> - </span>
+                            <a target="_blank" asp-action="PayPaymentRequest" asp-route-id="@item.Id">Pay</a>
+                            <span> - </span>
+                            <a asp-action="RemovePaymentRequestPrompt" asp-route-id="@item.Id">Remove</a>
+                        </td>
+                    </tr>
+                }
+                </tbody>
+            </table>
+            
+            <nav aria-label="...">
+                <ul class="pagination">
+                    <li class="page-item  @(Model.Skip == 0 ? "disabled" : null)">
+                        <a class="page-link" tabindex="-1" href="@Url.Action("GetPaymentRequests", new
+                                                                 {
+                                                                     skip = Math.Max(0, Model.Skip - Model.Count),
+                                                                     count = Model.Count,
+                                                                 })">Previous</a>
+                    </li>
+                    <li class="page-item disabled">
+                        <span class="page-link">@(Model.Skip + 1) to @(Model.Skip + Model.Count) of @Model.Total</span>
+                    </li>
+                    <li class="page-item @(Model.Total > (Model.Skip + Model.Count) ? null : "disabled")">
+                        <a class="page-link" href="@Url.Action("GetPaymentRequests", new
+                                                   {
+                                                       skip = Model.Skip + Model.Count,
+                                                       count = Model.Count,
+                                                   })">Next</a>
+                    </li>
+                </ul>
+            </nav>
+        </div>
+
+    </div>
+</section>

BTCPayServer/Views/PaymentRequest/MinimalPaymentRequest.cshtml

@@ -0,0 +1,163 @@
+@model BTCPayServer.Models.PaymentRequestViewModels.ViewPaymentRequestViewModel
+
+<div class="container">
+    <div class="row w-100 p-0 m-0" style="height: 100vh">
+        <div class="mx-auto my-auto w-100">
+            <div class="card">
+                <h1 class="card-header">
+                    @Model.Title
+                    <span class="text-muted float-right text-center">@Model.Status</span>
+                </h1>
+                <div class="card-body px-0 pt-0">
+                    <div class="row mb-4">
+                        <div class="col-sm-12 col-md-12 col-lg-6 ">
+                            <ul class="w-100 list-group list-group-flush">
+                                <li class="list-group-item">
+                                    <div class="d-flex justify-content-between">
+                                        <span class="h2 text-muted">Request amount:</span>
+                                        <span class="h2">@Model.AmountFormatted</span>
+                                    </div>
+                                </li>
+                                <li class="list-group-item">
+                                    <div class="d-flex justify-content-between">
+                                        <span class="h2 text-muted">Paid so far:</span>
+                                        <span class="h2">@Model.AmountCollectedFormatted</span>
+                                    </div>
+                                </li>
+                                <li class="list-group-item">
+                                    <div class="d-flex justify-content-between">
+                                        <span class="h2 text-muted">Amount due:</span>
+                                        <span class="h2">@Model.AmountDueFormatted</span>
+                                    </div>
+                                </li>
+                            </ul>
+                            <div class="w-100 p-2">@Html.Raw(Model.Description)</div>
+
+                        </div>
+                        <div class="col-sm-12 col-md-12  col-lg-6">
+                            <div class="table-responsive">
+                                <table class="table border-top-0 ">
+                                    <thead>
+                                    <tr>
+                                        <th class=" border-top-0" scope="col">Invoice #</th>
+                                        <th class=" border-top-0">Price</th>
+                                        <th class=" border-top-0">Expiry</th>
+                                        <th class=" border-top-0">Status</th>
+                                    </tr>
+                                    </thead>
+                                    <tbody>
+                                    @if (Model.Invoices == null && !Model.Invoices.Any())
+                                    {
+                                        <tr>
+                                            <td colspan="4" class="text-center">No payments made yet</td>
+                                        </tr>
+                                    }
+                                    else
+                                    {
+                                        foreach (var invoice in Model.Invoices)
+                                        {
+                                            <tr class="bg-light">
+                                                <td scope="row">@invoice.Id</td>
+                                                <td>@invoice.Amount @invoice.Currency</td>
+                                                <td>@invoice.ExpiryDate.ToString("g")</td>
+                                                <td>@invoice.Status</td>
+                                            </tr>
+                                            if (invoice.Payments != null && invoice.Payments.Any())
+                                            {
+                                                <tr class="bg-light">
+                                                    <td colspan="4" class=" px-2 py-1 border-top-0">
+
+                                                        <div class="table-responsive">
+                                                            <table class="table table-bordered">
+                                                                <tr>
+                                                                    <th class="p-1" style="max-width: 300px">Tx Id</th>
+                                                                    <th class="p-1">Payment Method</th>
+                                                                    <th class="p-1">Amount</th>
+                                                                    <th class="p-1">Link</th>
+                                                                </tr>
+                                                                @foreach (var payment in invoice.Payments)
+                                                                {
+                                                                    <tr class="d-flex">
+                                                                        <td class="p-1 m-0 d-print-none d-block" style="max-width: 300px">
+                                                                            <div style="width: 100%; overflow-x: auto; overflow-wrap: initial;">@payment.Id</div>
+                                                                        </td>
+                                                                        <td class="p-1 m-0 d-none d-print-table-cell" style="max-width: 150px;">
+                                                                            @payment.Id
+                                                                        </td>
+                                                                        <td class="p-1">@payment.PaymentMethod</td>
+                                                                        <td class="p-1">@payment.Amount</td>
+                                                                        <td class="p-1 d-print-none">
+                                                                            @if (!string.IsNullOrEmpty(payment.Link))
+                                                                            {
+                                                                                <a :href="@payment.Link" target="_blank">Link</a>
+                                                                            }
+                                                                        </td>
+                                                                        <td class="p-1 d-none d-print-table-cell" style="max-width: 150px;">
+                                                                            @payment.Link
+                                                                        </td>
+                                                                    </tr>
+                                                                }
+                                                            </table>
+                                                        </div>
+                                                    </td>
+                                                </tr>
+                                            }
+                                        }
+                                    }
+                                    @if (Model.IsPending)
+                                    {
+                                        <tr>
+                                            <td colspan="4" class="text-center">
+                                                @if (Model.AllowCustomPaymentAmounts && !Model.AnyPendingInvoice)
+                                                {
+                                                    <form method="get" asp-action="PayPaymentRequest">
+
+                                                        <div class="input-group m-auto" style="max-width: 250px">
+                                                            <input
+                                                                class="form-control"
+                                                                type="number"
+                                                                name="amount"
+
+                                                                value="@Model.AmountDue"
+                                                                max="@Model.AmountDue"
+                                                                step="any"
+                                                                placeholder="Amount"
+                                                                required>
+                                                            <div class="input-group-append">
+                                                                <span class='input-group-text'>@Model.Currency.ToUpper()</span>
+                                                                <button
+                                                                    class="btn btn-primary"
+                                                                    type="submit">
+                                                                    Pay now
+                                                                </button>
+                                                            </div>
+                                                        </div>
+                                                    </form>
+                                                }
+                                                else
+                                                {
+                                                    <a class="btn btn-primary btn-lg d-print-none" asp-action="PayPaymentRequest">
+                                                        Pay now
+                                                    </a>
+                                                }
+                                            </td>
+                                        </tr>
+                                    }
+                                    </tbody>
+                                </table>
+                            </div>
+                        </div>
+                    </div>
+
+                </div>
+                <div class="card-footer text-muted d-flex justify-content-between">
+
+                    <div >Updated @Model.LastUpdated.ToString("g")</div>
+                    <div >
+                        <span class="text-muted">Powered by </span><a href="https://btcpayserver.org" target="_blank">BTCPay Server</a>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>

BTCPayServer/Views/PaymentRequest/ViewPaymentRequest.cshtml

@@ -0,0 +1,213 @@
+@model BTCPayServer.Models.PaymentRequestViewModels.ViewPaymentRequestViewModel
+
+@addTagHelper *, Meziantou.AspNetCore.BundleTagHelpers
+@inject BTCPayServer.HostedServices.CssThemeManager themeManager
+@{
+    ViewData["Title"] = Model.Title;
+    Layout = null;
+}
+
+<!DOCTYPE html>
+<html class="h-100">
+<head>
+    <title>@Model.Title</title>
+    <meta charset="utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <link href="@Context.Request.GetRelativePathOrAbsolute(themeManager.BootstrapUri)" rel="stylesheet"/>
+    @if (Model.CustomCSSLink != null)
+    {
+        <link href="@Model.CustomCSSLink" rel="stylesheet"/>
+    }
+    @if (!Context.Request.Query.ContainsKey("simple"))
+    {
+        <script type="text/javascript">
+            var srvModel = @Html.Raw(Json.Serialize(Model));
+        </script>
+        <bundle name="wwwroot/bundles/payment-request-bundle-1.min.js"></bundle>
+        <bundle name="wwwroot/bundles/payment-request-bundle-2.min.js"></bundle>
+    }
+
+    <bundle name="wwwroot/bundles/payment-request-bundle.min.css"></bundle>
+    @if (!string.IsNullOrEmpty(Model.EmbeddedCSS))
+    {
+        <style>
+            @Html.Raw(Model.EmbeddedCSS); 
+        </style>
+    }
+</head>
+<body>
+
+@if (Context.Request.Query.ContainsKey("simple"))
+{
+    @await Html.PartialAsync("MinimalPaymentRequest", Model)
+}
+else
+{
+    <noscript>
+        @await Html.PartialAsync("MinimalPaymentRequest", Model)
+    </noscript>
+
+    <div class="container" id="app" v-cloak>
+        <div class="row w-100 p-0 m-0" style="height: 100vh">
+            <div class="mx-auto my-auto w-100">
+                <div class="card">
+                    <h1 class="card-header">
+                        {{srvModel.title}}
+
+                        <span class="text-muted float-right text-center">
+                            <template v-if="settled">Settled</template>
+                            <template v-else>
+                                <template v-if="ended">Request Expired</template>
+                                <template v-else-if="endDiff">Expires in {{endDiff}}</template>
+                            </template>
+                        </span>
+                    </h1>
+                    <div class="card-body px-0 pt-0">
+                        <div class="row mb-4">
+                            <div class="col-sm-12 col-md-12 col-lg-6 ">
+                                <ul class="w-100 list-group list-group-flush">
+                                    <li class="list-group-item">
+                                        <div class="d-flex justify-content-between">
+                                            <span class="h2 text-muted">Request amount:</span>
+                                            <span class="h2">{{srvModel.amountFormatted}}</span>
+                                        </div>
+                                    </li>
+                                    <li class="list-group-item">
+                                        <div class="d-flex justify-content-between">
+                                            <span class="h2 text-muted">Paid so far:</span>
+                                            <span class="h2">{{srvModel.amountCollectedFormatted}}</span>
+                                        </div>
+                                    </li>
+                                    <li class="list-group-item">
+                                        <div class="d-flex justify-content-between">
+                                            <span class="h2 text-muted">Amount due:</span>
+                                            <span class="h2">{{srvModel.amountDueFormatted}}</span>
+                                        </div>
+                                    </li>
+                                </ul>
+                                <div v-html="srvModel.description" class="w-100 p-2"></div>
+
+                            </div>
+                            <div class="col-sm-12 col-md-12  col-lg-6">
+                                <div class="table-responsive">
+                                    <table class="table border-top-0 ">
+                                        <thead>
+                                        <tr>
+                                            <th class=" border-top-0" scope="col">Invoice #</th>
+                                            <th class=" border-top-0">Price</th>
+                                            <th class=" border-top-0">Expiry</th>
+                                            <th class=" border-top-0">Status</th>
+                                        </tr>
+                                        </thead>
+                                        <tbody>
+                                        <tr v-if="!srvModel.invoices || srvModel.invoices.length == 0">
+                                            <td colspan="4" class="text-center">No payments made yet</td>
+                                        </tr>
+                                        <template v-else v-for="invoice of srvModel.invoices" :key="invoice.id">
+                                            <tr class="bg-light">
+                                                <td scope="row">{{invoice.id}}</td>
+                                                <td>{{invoice.amount}} {{invoice.currency}}</td>
+                                                <td>{{moment(invoice.expiryDate).format('L HH:mm')}}</td>
+                                                <td>{{invoice.status}}</td>
+                                            </tr>
+                                            <tr class="bg-light" v-if="invoice.payments && invoice.payments.length > 0">
+                                                <td colspan="4" class=" px-2 py-1 border-top-0">
+
+                                                    <div class="table-responsive">
+                                                        <table class="table table-bordered">
+                                                            <tr>
+                                                                <th class="p-1" style="max-width: 300px">Tx Id</th>
+                                                                <th class="p-1">Payment Method</th>
+                                                                <th class="p-1">Amount</th>
+                                                                <th class="p-1">Link</th>
+                                                            </tr>
+                                                            <tr v-for="payment of invoice.payments">
+                                                                <td class="p-1 m-0 d-print-none d-block" style="max-width: 300px">
+                                                                    <div style="width: 100%; overflow-x: auto; overflow-wrap: initial;">{{payment.id}}</div>
+                                                                </td>
+                                                                <td class="p-1 m-0 d-none d-print-table-cell" style="max-width: 150px;">
+                                                                    {{payment.id}}
+                                                                </td>
+                                                                <td class="p-1">{{formatPaymentMethod(payment.paymentMethod)}}</td>
+                                                                <td class="p-1">{{payment.amount.noExponents()}}</td>
+                                                                <td class="p-1 d-print-none">
+                                                                    <a v-if="payment.link" :href="payment.link" target="_blank">Link</a>
+                                                                </td>
+                                                                <td class="p-1 d-none d-print-table-cell" style="max-width: 150px;">
+                                                                    {{payment.link}}
+                                                                </td>
+                                                            </tr>
+                                                        </table>
+                                                    </div>
+                                                </td>
+                                            </tr>
+                                        </template>
+                                        <tr v-if="!ended && (srvModel.amountDue) > 0" class="d-print-none">
+                                            <td colspan="4" class="text-center">
+
+                                                <template v-if="srvModel.allowCustomPaymentAmounts && !srvModel.anyPendingInvoice">
+                                                    <form v-on:submit="submitCustomAmountForm">
+
+                                                        <div class="input-group m-auto" style="max-width: 250px">
+                                                            <input
+                                                                :readonly="!srvModel.allowCustomPaymentAmounts"
+                                                                class="form-control"
+                                                                type="number"
+                                                                v-model="customAmount"
+                                                                :max="srvModel.amountDue"
+                                                                step="any"
+                                                                placeholder="Amount"
+                                                                required>
+                                                            <div class="input-group-append">
+                                                                <span class='input-group-text'>{{currency}}</span>
+                                                                <button
+                                                                    class="btn btn-primary"
+                                                                    v-bind:class="{ 'btn-disabled': loading}"
+                                                                    :disabled="loading"
+                                                                    type="submit">
+                                                                    <div v-if="loading" class="spinner-grow spinner-grow-sm" role="status">
+                                                                        <span class="sr-only">Loading...</span>
+                                                                    </div>
+                                                                    Pay now
+                                                                </button>
+                                                            </div>
+                                                        </div>
+                                                    </form>
+                                                </template>
+
+
+                                                <button v-else class="btn btn-primary btn-lg " v-on:click="pay(null)"
+                                                        :disabled="loading">
+                                                    <div v-if="loading" class="spinner-grow spinner-grow-sm" role="status">
+                                                        <span class="sr-only">Loading...</span>
+                                                    </div>
+
+                                                    Pay now
+                                                </button>
+                                            </td>
+                                        </tr>
+                                        </tbody>
+                                    </table>
+                                </div>
+                            </div>
+                        </div>
+
+                    </div>
+                    <div class="card-footer text-muted d-flex justify-content-between">
+
+                        <div >
+                            <span v-on:click="print" class="btn-link d-print-none" style="cursor: pointer"> <span class="fa fa-print"></span> Print</span>
+                            <span>Updated {{lastUpdated}}</span>
+                        </div>
+                        <div >
+                            <span class="text-muted">Powered by </span><a href="https://btcpayserver.org" target="_blank">BTCPay Server</a>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+}
+</body>
+</html>

BTCPayServer/Views/Server/LightningWalletServices.cshtml

@@ -1,10 +1,10 @@
-@model SparkServicesViewModel
+@model LightningWalletServices
 @{
     ViewData.SetActivePageAndTitle(ServerNavPages.Services);
 }
 
 
-<h4>Spark service</h4>
+<h4>@Model.WalletName</h4>
 <partial name="_StatusMessage" for="@TempData["StatusMessage"]" />
 
 @if (Model.ShowQR)
@@ -30,7 +30,7 @@
         <div class="form-group">
             <h5>Browser connection</h5>
             <p>
-                <span>You can go to spark from your browser by <a href="@Model.SparkLink" target="_blank">clicking here</a><br /></span>
+                <span>You can go to @Model.WalletName from your browser by <a href="@Model.ServiceLink" target="_blank">clicking here</a><br /></span>
             </p>
         </div>
 
@@ -54,7 +54,7 @@
             {
                 <div class="form-group">
                     <div id="qrCode"></div>
-                    <div id="qrCodeData" data-url="@Html.Raw(Model.SparkLink)"></div>
+                    <div id="qrCodeData" data-url="@Html.Raw(Model.ServiceLink)"></div>
                 </div>
             }
         </div>
@@ -70,7 +70,7 @@
         <script type="text/javascript">
         new QRCode(document.getElementById("qrCode"),
             {
-                text: "@Html.Raw(Model.SparkLink)",
+                text: "@Html.Raw(Model.ServiceLink)",
                 width: 150,
                 height: 150
             });

BTCPayServer/Views/Shared/_Layout.cshtml

@@ -42,7 +42,7 @@
     }
 
     <!-- Navigation -->
-    <nav class='navbar navbar-expand-lg navbar-light fixed-top @additionalStyle' id="mainNav">
+    <nav class='navbar navbar-expand-lg navbar-dark fixed-top @additionalStyle' id="mainNav">
         <div class="container">
             <a class="navbar-brand js-scroll-trigger" href="~/">
                 <img src="~/img/logo.png" height="45">
@@ -66,6 +66,7 @@
                         <li class="nav-item"><a asp-area="" asp-controller="Apps" asp-action="ListApps" class="nav-link js-scroll-trigger">Apps</a></li>
                         <li class="nav-item"><a asp-area="" asp-controller="Wallets" asp-action="ListWallets" class="nav-link js-scroll-trigger">Wallets</a></li>
                         <li class="nav-item"><a asp-area="" asp-controller="Invoice" asp-action="ListInvoices" class="nav-link js-scroll-trigger">Invoices</a></li>
+                        <li class="nav-item"><a asp-area="" asp-controller="PaymentRequest" asp-action="GetPaymentRequests" class="nav-link js-scroll-trigger">Payment Requests</a></li>
                         <li class="nav-item">
                             <a asp-area="" asp-controller="Manage" asp-action="Index" title="Manage" class="nav-link js-scroll-trigger">My settings</a>
                         </li>
@@ -84,12 +85,7 @@
             </div>
             <div id="badUrl" class="alert alert-danger alert-dismissible" style="display:none; position:absolute; top:75px;" role="alert">
                 <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
-                <span>BTCPay is expecting you to access this website from <b>@(env.ExpectedProtocol)://@(env.ExpectedHost)/</b>. If you want to change this expectation:</span>
-                <ul>
-                    <li>Either starts BTCPay with <b>--externalurl @(env.ExpectedProtocol)://@(env.ExpectedHost)/</b></li>
-                    <li>Or, if using docker-compose deployment, setting environment variable <b>BTCPAY_PROTOCOL=@(env.ExpectedProtocol)</b> and <b>BTCPAY_HOST=@(env.ExpectedDomain)</b></li>
-                </ul>
-
+                <span>BTCPay is expecting you to access this website from <b>@(env.ExpectedProtocol)://@(env.ExpectedHost)/</b>. If you use a reverse proxy, please set the <b>X-Forwarded-Proto</b> header to <b>@(env.ExpectedProtocol)</b>:</span>
             </div>
         </div>
     </nav>

BTCPayServer/bundleconfig.json

@@ -124,5 +124,54 @@
             "wwwroot/vendor/bootstrap-vue/bootstrap-vue.css",
             "wwwroot/crowdfund/**/*.css"
         ]
+    },
+
+    {
+        "outputFileName": "wwwroot/bundles/payment-request-admin-bundle.min.js",
+        "inputFiles": [
+            "wwwroot/vendor/summernote/summernote-bs4.js",
+            "wwwroot/vendor/flatpickr/flatpickr.js",
+            "wwwroot/payment-request-admin/**/*.js"
+        ]
+    },
+
+    {
+        "outputFileName": "wwwroot/bundles/payment-request-admin-bundle.min.css",
+        "inputFiles": [
+            "wwwroot/vendor/summernote/summernote-bs4.css",
+            "wwwroot/vendor/flatpickr/flatpickr.min.css"
+        ]
+    },
+
+    {
+        "outputFileName": "wwwroot/bundles/payment-request-bundle-1.min.js",
+        "inputFiles": [
+            "wwwroot/vendor/vuejs/vue.min.js",
+            "wwwroot/vendor/babel-polyfill/polyfill.min.js",
+            "wwwroot/vendor/vue-toasted/vue-toasted.min.js",
+            "wwwroot/vendor/bootstrap-vue/bootstrap-vue.js",
+            "wwwroot/vendor/signalr/signalr.js",
+            "wwwroot/vendor/animejs/anime.min.js",
+            "wwwroot/modal/btcpay.js",
+            "wwwroot/payment-request/**/*.js"
+        ]
+    },
+
+    {
+        "outputFileName": "wwwroot/bundles/payment-request-bundle-2.min.js",
+        "inputFiles": [
+            "wwwroot/vendor/moment/moment.js"
+        ],
+        "minify": {
+            "enabled": false
+        }
+    },
+    {
+        "outputFileName": "wwwroot/bundles/payment-request-bundle.min.css",
+        "inputFiles": [
+            "wwwroot/vendor/font-awesome/css/font-awesome.min.css",
+            "wwwroot/vendor/bootstrap-vue/bootstrap-vue.css",
+            "wwwroot/payment-request/**/*.css"
+        ]
     }
 ]

BTCPayServer/wwwroot/cart/js/cart.js

@@ -25,6 +25,10 @@ function Cart() {
 }
 
 Cart.prototype.setCustomAmount = function(amount) {
+    if (!srvModel.showCustomAmount) {
+        return 0;
+    }
+
     this.customAmount = this.toNumber(amount);
 
     if (this.customAmount > 0) {
@@ -36,10 +40,18 @@ Cart.prototype.setCustomAmount = function(amount) {
 }
 
 Cart.prototype.getCustomAmount = function() {
+    if (!srvModel.showCustomAmount) {
+        return 0;
+    }
+
     return this.toCents(this.customAmount);
 }
 
 Cart.prototype.setTip = function(amount) {
+    if (!srvModel.enableTips) {
+        return 0;
+    }
+
     this.tip = this.toNumber(amount);
 
     if (this.tip > 0) {
@@ -51,10 +63,18 @@ Cart.prototype.setTip = function(amount) {
 }
 
 Cart.prototype.getTip = function() {
+    if (!srvModel.enableTips) {
+        return 0;
+    }
+
     return this.toCents(this.tip);
 }
 
 Cart.prototype.setDiscount = function(amount) {
+    if (!srvModel.showDiscount) {
+        return 0;
+    }
+
     this.discount = this.toNumber(amount);
 
     if (this.discount > 0) {
@@ -66,10 +86,18 @@ Cart.prototype.setDiscount = function(amount) {
 }
 
 Cart.prototype.getDiscount = function() {
+    if (!srvModel.showDiscount) {
+        return 0;
+    }
+
     return this.toCents(this.discount);
 }
 
 Cart.prototype.getDiscountAmount = function(amount) {
+    if (!srvModel.showDiscount) {
+        return 0;
+    }
+
     return this.percentage(amount, this.getDiscount());
 }
 

BTCPayServer/wwwroot/checkout/css/normalizer.css

@@ -8223,7 +8223,7 @@ a:hover {
     }
 
 .action-button--secondary {
-    background: #e7e7e7;
+    background: #e0e0e0;
     border: 0;
     box-shadow: none;
     color: #4A4A4A;
@@ -8397,9 +8397,9 @@ strong {
 }
 
 .currency-selection {
-    border-bottom: 1px solid #E9E9E9;
+    border-bottom: 1px solid #e0e0e0;
     position: relative;
-    padding: 4px 15px;
+    padding: 4px 10px 4px 15px;
     display: flex;
     font-weight: 300;
     color: #565D6E;
@@ -8516,7 +8516,7 @@ strong {
 .payment-tabs {
     position: relative;
     background: #fff;
-    border-top: 1px solid #E9E9E9;
+    border-top: 1px solid #e0e0e0;
     display: flex;
     font-size: 13.5px;
     box-shadow: 0px 5px 7px 0px rgba(0, 0, 0, 0.09);
@@ -8605,7 +8605,7 @@ strong {
         margin-top: 15px;
         padding: 15px;
         background-color: #ffffff;
-        border: 1px solid #E9E9E9;
+        border: 1px solid #e0e0e0;
         border-radius: 5px;
         width: 100%;
         max-height: 300px;
@@ -8701,7 +8701,7 @@ strong {
 
 .manual-box.underpaid-expired__refund-pending > .manual-box__amount {
     transition: all 250ms cubic-bezier(0.4, 0, 1, 1);
-    border-top-color: #E9E9E9;
+    border-top-color: #e0e0e0;
     border-top-right-radius: 5px;
     border-top-left-radius: 5px;
 }
@@ -8722,7 +8722,7 @@ strong {
     padding-bottom: .7rem;
     border-top-left-radius: 5px;
     border-top-right-radius: 5px;
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
     border-bottom: 0;
     max-height: 300px;
 }
@@ -8737,7 +8737,7 @@ strong {
     text-align: center;
     position: relative;
     border-radius: 5px;
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
 }
 
 .flipped .manual-box__amount {
@@ -8776,8 +8776,8 @@ strong {
     height: 10px;
     width: 10px;
     left: 50%;
-    border-right: 1px solid #E9E9E9;
-    border-bottom: 1px solid #E9E9E9;
+    border-right: 1px solid #e0e0e0;
+    border-bottom: 1px solid #e0e0e0;
     transform: rotate(45deg);
     margin-left: -5px;
     bottom: -6px;
@@ -8800,8 +8800,8 @@ strong {
     height: 10px;
     width: 10px;
     left: 50%;
-    border-right: 1px solid #E9E9E9;
-    border-bottom: 1px solid #E9E9E9;
+    border-right: 1px solid #e0e0e0;
+    border-bottom: 1px solid #e0e0e0;
     transform: rotateZ(45deg);
     margin-left: -5px;
     top: -5px;
@@ -8813,7 +8813,7 @@ strong {
 .manual-box__address > .flipper {
     backface-visibility: hidden;
     height: 100%;
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
     border-top: 0;
     border-bottom-left-radius: 5px;
     border-bottom-right-radius: 5px;
@@ -9155,7 +9155,7 @@ strong {
 }
 
 .bp-input {
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
     border-radius: 2px;
     font-size: 15px;
     font-weight: 400;
@@ -9482,7 +9482,7 @@ strong {
 .payment__scan__qrcode img {
     padding: 15px;
     background-color: #ffffff;
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
     border-radius: 5px;
 }
 
@@ -9714,7 +9714,7 @@ strong {
     background: #fff;
     padding: 30px 15px;
     text-align: center;
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
     border-radius: 5px;
     margin: -5px 0 18px;
     font-weight: 300;
@@ -11335,7 +11335,7 @@ low-fee-timeline {
     text-align: center;
     position: relative;
     border-radius: 5px;
-    border: 1px solid #E9E9E9;
+    border: 1px solid #e0e0e0;
     background: #fff;
 }
 
@@ -11353,7 +11353,7 @@ low-fee-timeline {
     }
 
     .copySectionBox.bottomBorder {
-        border-bottom: 1px solid #e9e9e9;
+        border-bottom: 1px solid #e0e0e0;
     }
 
 .separatorGem {
@@ -11361,8 +11361,8 @@ low-fee-timeline {
     height: 10px;
     width: 10px;
     left: 50%;
-    border-right: 1px solid #E9E9E9;
-    border-bottom: 1px solid #E9E9E9;
+    border-right: 1px solid #e0e0e0;
+    border-bottom: 1px solid #e0e0e0;
     transform: rotateZ(45deg);
     margin-left: -5px;
     top: -5px;
@@ -11374,7 +11374,7 @@ low-fee-timeline {
 
 .checkoutTextbox {
     width: 100%;
-    border: 1px solid #e9e9e9;
+    border: 1px solid #e0e0e0;
     border-radius: 4px;
     outline: none;
     padding: 8px 4px 8px;
@@ -11402,7 +11402,7 @@ low-fee-timeline {
         color: #aaa;
         height: 16px;
         padding: 0px 4px;
-        border-right: 1px solid #e9e9e9;
+        border-right: 1px solid #e0e0e0;
     }
 
     .inputWithIcon.inputIconBg img {

BTCPayServer/wwwroot/checkout/css/vex-extrastyles.css

@@ -40,32 +40,35 @@
     display: none;
 }
 
+.paywithRowRight {
+    margin-top: -1px;
+}
+
 .cursorPointer {
     cursor: pointer;
 }
 
 .payment__currencies {
-    font-size: 14px;
+    font-size: 13px;
+    border: 1px solid #e0e0e0;
+    border-radius: 5px;
+    padding: 6px;
 }
 
     .payment__currencies img {
-        height: 32px;
+        margin-top: -3px;
+        height: 24px;
     }
 
-.clickable_underline {
-    border-bottom: 1px dotted #ccc;
-    font-size: 13px;
-}
+    .payment__currencies:hover .clickable_underline {
+        border-bottom: 1px dotted black;
+    }
 
-.payment__currencies:hover .clickable_underline {
-    border-bottom: 1px dotted black;
-}
+    .payment__currencies:hover {
+        border: 1px solid #5c6373;
+        background: #f8f8f8;
+    }
 
 .clickable_indicator {
-    margin-right: -10px;
-    opacity: 0.3;
-}
-
-.payment__currencies:hover .clickable_indicator {
-    opacity: 1;
+    color: #5c6373;
 }

BTCPayServer/wwwroot/checkout/js/core.js

@@ -234,6 +234,7 @@ $(document).ready(function () {
     // Should connect using webhook ?
     // If notification received
 
+    var socket = null;
     var supportsWebSockets = 'WebSocket' in window && window.WebSocket.CLOSING === 2;
     if (supportsWebSockets) {
         var loc = window.location, ws_uri;
@@ -245,7 +246,7 @@ $(document).ready(function () {
         ws_uri += "//" + loc.host;
         ws_uri += loc.pathname + "/status/ws?invoiceId=" + srvModel.invoiceId;
         try {
-            var socket = new WebSocket(ws_uri);
+            socket = new WebSocket(ws_uri);
             socket.onmessage = function (e) {
                 fetchStatus();
             };
@@ -259,7 +260,9 @@ $(document).ready(function () {
     }
 
     var watcher = setInterval(function () {
-        fetchStatus();
+        if (socket === null || socket.readyState !== 1) {
+            fetchStatus();
+        }
     }, 2000);
 
     $(".menu__item").click(function () {

BTCPayServer/wwwroot/crowdfund-admin/main.js

@@ -1,8 +1,19 @@
 hljs.initHighlightingOnLoad();
 $(document).ready(function() {
 
-    $(".richtext").summernote();
-    $(".datetime").flatpickr({
-        enableTime: true
+    $(".richtext").summernote({
+        minHeight: 300
+    });
+    $(".datetime").each(function(){
+        var element = $(this);
+        var min = element.attr("min");
+        var max = element.attr("max");
+        var defaultDate = element.attr("value");
+        element.flatpickr({
+            enableTime: true,
+            minDate: min,
+            maxDate: max,
+            defaultDate: defaultDate
+        });
     });
 });

BTCPayServer/wwwroot/crowdfund/app.js

@@ -190,14 +190,14 @@ addLoadEvent(function (ev) {
                     var mDiffH =  moment(this.srvModel.endDate).diff(moment(), "hours");
                     var mDiffM =  moment(this.srvModel.endDate).diff(moment(), "minutes");
                     var mDiffS =  moment(this.srvModel.endDate).diff(moment(), "seconds");
-                    this.endDiff =  mDiffD > 0? mDiffD + " Days" : mDiffH> 0? mDiffH + " Hours" : mDiffM> 0? mDiffM+ " Minutes" : mDiffS> 0? mDiffS + " Seconds": ""; 
+                    this.endDiff =  mDiffD > 0? mDiffD + " days" : mDiffH> 0? mDiffH + " hours" : mDiffM> 0? mDiffM+ " minutes" : mDiffS> 0? mDiffS + " seconds": "";
                 }
                 if(!this.started && this.srvModel.startDate){
                     var mDiffD =  moment(this.srvModel.startDate).diff(moment(), "days");
                     var mDiffH =  moment(this.srvModel.startDate).diff(moment(), "hours");
                     var mDiffM =  moment(this.srvModel.startDate).diff(moment(), "minutes");
                     var mDiffS =  moment(this.srvModel.startDate).diff(moment(), "seconds");
-                    this.startDiff =  mDiffD > 0? mDiffD + " Days" : mDiffH> 0? mDiffH + " Hours" : mDiffM> 0? mDiffM+ " Minutes" : mDiffS> 0? mDiffS + " Seconds": "";
+                    this.startDiff =  mDiffD > 0? mDiffD + " days" : mDiffH> 0? mDiffH + " hours" : mDiffM> 0? mDiffM+ " minutes" : mDiffS> 0? mDiffS + " seconds": "";
                 }
                 this.lastUpdated = moment(this.srvModel.info.lastUpdated).calendar();
                 this.active = this.started && !this.ended;

BTCPayServer/wwwroot/locales/sk-SK.json

@@ -44,7 +44,7 @@
   "Node Info": "Informácia o uzle",
   "txCount": "{{count}} transakcia",
   "txCount_plural": "{{count}} transakcií",
-  "Pay with CoinSwitch": "Pay with CoinSwitch",
-  "Pay with Changelly": "Pay with Changelly",
-  "Close": "Close"
+  "Pay with CoinSwitch": "Zaplatiť cez CoinSwitch",
+  "Pay with Changelly": "Zaplatiť cez Changelly",
+  "Close": "Zatvoriť"
 }

BTCPayServer/wwwroot/main/css/site.css

@@ -14,3 +14,8 @@
     width: 100%;
     overflow: hidden;
 }
+
+
+.only-for-js{
+    display: none;
+}

BTCPayServer/wwwroot/main/site.js

@@ -6,4 +6,11 @@
         var dateString = localDate.toLocaleDateString() + " " + localDate.toLocaleTimeString();
         $(this).text(dateString);
     });
+
+
+    $(".input-group-clear").on("click", function(){
+        $(this).parents(".input-group").find("input").val(null);
+    });
+
+    $(".only-for-js").show();
 });

BTCPayServer/wwwroot/payment-request-admin/main.js

@@ -0,0 +1,19 @@
+$(document).ready(function() {
+
+    $(".richtext").summernote({
+        minHeight: 300
+    });
+    $(".datetime").each(function(){
+        var element = $(this);
+        var min = element.attr("min");
+        var max = element.attr("max");
+        var defaultDate = element.attr("value");
+        element.flatpickr({
+            enableTime: true,
+            minDate: min,
+            maxDate: max,
+            defaultDate: defaultDate
+        });        
+    });
+
+});

BTCPayServer/wwwroot/payment-request/app.js

@@ -0,0 +1,176 @@
+var app = null;
+var eventAggregator = new Vue();
+
+function addLoadEvent(func) {
+    var oldonload = window.onload;
+    if (typeof window.onload != 'function') {
+        window.onload = func;
+    } else {
+        window.onload = function () {
+            if (oldonload) {
+                oldonload();
+            }
+            func();
+        }
+    }
+}
+
+addLoadEvent(function (ev) {
+    Vue.use(Toasted);
+
+
+    app = new Vue({
+        el: '#app',
+        data: function () {
+            return {
+                srvModel: window.srvModel,
+                connectionStatus: "",
+                endDate: "",
+                endDateRelativeTime: "",
+                ended: false,
+                endDiff: "",
+                active: true,
+                lastUpdated: "",
+                loading: false,
+                timeoutState: "",
+                customAmount: null
+            }
+        },
+        computed: {
+            currency: function () {
+                return this.srvModel.currency.toUpperCase();
+            },
+            settled: function () {
+                return this.srvModel.amountDue <= 0;
+            }
+        },
+        methods: {
+            updateComputed: function () {
+                if (this.srvModel.expiryDate) {
+                    var endDateM = moment(this.srvModel.expiryDate);
+                    this.endDate = endDateM.format('MMMM Do YYYY');
+                    this.endDateRelativeTime = endDateM.fromNow();
+                    this.ended = endDateM.isBefore(moment());
+
+                } else {
+                    this.ended = false;
+                }
+
+                if (!this.ended && this.srvModel.expiryDate) {
+                    var mDiffD = moment(this.srvModel.expiryDate).diff(moment(), "days");
+                    var mDiffH = moment(this.srvModel.expiryDate).diff(moment(), "hours");
+                    var mDiffM = moment(this.srvModel.expiryDate).diff(moment(), "minutes");
+                    var mDiffS = moment(this.srvModel.expiryDate).diff(moment(), "seconds");
+                    this.endDiff = mDiffD > 0 ? mDiffD + " days" : mDiffH > 0 ? mDiffH + " hours" : mDiffM > 0 ? mDiffM + " minutes" : mDiffS > 0 ? mDiffS + " seconds" : "";
+                }
+
+                this.lastUpdated = moment(this.srvModel.lastUpdated).calendar();
+                this.active = !this.ended;
+                setTimeout(this.updateComputed, 1000);
+            },
+            setLoading: function (val) {
+                this.loading = val;
+                if (this.timeoutState) {
+                    clearTimeout(this.timeoutState);
+                }
+            },
+            pay: function (amount) {
+                this.setLoading(true);
+                var self = this;
+                self.timeoutState = setTimeout(function () {
+                    self.setLoading(false);
+                }, 5000);
+
+                eventAggregator.$emit("pay", amount);
+            },
+            formatPaymentMethod: function (str) {
+
+                if (str.endsWith("LightningLike")) {
+                    return str.replace("LightningLike", "Lightning")
+                }
+                return str;
+
+            },
+            print:function(){
+                window.print();
+            },
+            submitCustomAmountForm : function(e){
+                if (e) {
+                    e.preventDefault();
+                }
+                if(this.srvModel.allowCustomPaymentAmounts && parseFloat(this.customAmount) < this.srvModel.amountDue){
+                    this.pay(parseFloat(this.customAmount));
+                }else{
+                    this.pay();
+                }
+            }
+        },
+        mounted: function () {
+
+            this.customAmount = (this.srvModel.amountDue || 0).noExponents();
+            hubListener.connect();
+            var self = this;
+            eventAggregator.$on("invoice-created", function (invoiceId) {
+                self.setLoading(false);
+                btcpay.setApiUrlPrefix(window.location.origin);
+                btcpay.showInvoice(invoiceId);
+                btcpay.showFrame();
+            });
+            eventAggregator.$on("invoice-error", function (error) {
+                self.setLoading(false);
+                var msg = "";
+                if (typeof error === "string") {
+                    msg = error;
+                } else if (!error) {
+                    msg = "Unknown Error";
+                } else {
+                    msg = JSON.stringify(error);
+                }
+
+                Vue.toasted.show("Error creating invoice: " + msg, {
+                    iconPack: "fontawesome",
+                    icon: "exclamation-triangle",
+                    fullWidth: false,
+                    theme: "bubble",
+                    type: "error",
+                    position: "top-center",
+                    duration: 10000
+                });
+            });
+            eventAggregator.$on("payment-received", function (amount, cryptoCode, type) {
+                var onChain = type.toLowerCase() === "btclike";
+                amount = parseFloat(amount).noExponents();
+                if (onChain) {
+                    Vue.toasted.show('New payment of ' + amount + " " + cryptoCode + " " + (onChain ? "On Chain" : "LN "), {
+                        iconPack: "fontawesome",
+                        icon: "plus",
+                        duration: 10000
+                    });
+                } else {
+                    Vue.toasted.show('New payment of ' + amount + " " + cryptoCode + " " + (onChain ? "On Chain" : "LN "), {
+                        iconPack: "fontawesome",
+                        icon: "bolt",
+                        duration: 10000
+                    });
+                }
+
+
+            });
+            eventAggregator.$on("info-updated", function (model) {
+                console.warn("UPDATED", self.srvModel, arguments);
+                self.srvModel = model;
+            });
+            eventAggregator.$on("connection-pending", function () {
+                self.connectionStatus = "pending";
+            });
+            eventAggregator.$on("connection-failed", function () {
+                self.connectionStatus = "failed";
+            });
+            eventAggregator.$on("connection-lost", function () {
+                self.connectionStatus = "connection lost";
+            });
+            this.updateComputed();
+        }
+    });
+});
+

BTCPayServer/wwwroot/payment-request/helpers/math.js

@@ -0,0 +1,17 @@
+Number.prototype.noExponents= function(){
+    var data= String(this).split(/[eE]/);
+    if(data.length== 1) return data[0];
+
+    var  z= '', sign= this<0? '-':'',
+        str= data[0].replace('.', ''),
+        mag= Number(data[1])+ 1;
+
+    if(mag<0){
+        z= sign + '0.';
+        while(mag++) z += '0';
+        return z + str.replace(/^\-/,'');
+    }
+    mag -= str.length;
+    while(mag--) z += '0';
+    return str + z;
+};

BTCPayServer/wwwroot/payment-request/services/listener.js

@@ -0,0 +1,48 @@
+var hubListener = function () {
+
+    var connection = new signalR.HubConnectionBuilder().withUrl("/payment-requests/hub").build();
+
+    connection.onclose(function () {
+        eventAggregator.$emit("connection-lost");
+        console.error("Connection was closed. Attempting reconnect in 2s");
+        setTimeout(connect, 2000);
+    });
+    connection.on("PaymentReceived", function (amount, cryptoCode, type) {
+        eventAggregator.$emit("payment-received", amount, cryptoCode, type);
+    });
+    connection.on("InvoiceCreated", function (invoiceId) {
+        eventAggregator.$emit("invoice-created", invoiceId);
+    });
+    connection.on("InvoiceError", function (error) {
+        eventAggregator.$emit("invoice-error", error);
+    });
+    connection.on("InfoUpdated", function (model) {
+        eventAggregator.$emit("info-updated", model);
+    });
+
+    function connect() {
+
+        eventAggregator.$emit("connection-pending");
+        connection
+            .start()
+            .then(function () {
+                connection.invoke("ListenToPaymentRequest", srvModel.id);
+
+            })
+            .catch(function (err) {
+                eventAggregator.$emit("connection-failed");
+                console.error("Could not connect to backend. Retrying in 2s", err);
+                setTimeout(connect, 2000);
+            });
+    }
+
+    eventAggregator.$on("pay", function (amount) {
+        connection.invoke("Pay", amount);
+    });
+
+
+    return {
+        connect: connect
+    };
+}();
+

BTCPayServer/wwwroot/payment-request/styles/main.css

@@ -0,0 +1,7 @@
+[v-cloak] > * {
+    display: none
+}
+
+[v-cloak]::before {
+    content: "loading…"
+}

Dockerfile.linuxamd64

@@ -21,4 +21,4 @@ ENV BTCPAY_DATADIR=/datadir
 VOLUME /datadir
 
 COPY --from=builder "/app" .
-ENTRYPOINT ["dotnet", "BTCPayServer.dll"]
+ENTRYPOINT ["./docker-entrypoint.sh"]

Dockerfile.linuxarm32v7

@@ -18,4 +18,4 @@ ENV BTCPAY_DATADIR=/datadir
 VOLUME /datadir
 
 COPY --from=builder "/app" .
-ENTRYPOINT ["dotnet", "BTCPayServer.dll"]
+ENTRYPOINT ["./docker-entrypoint.sh"]

README.md

@@ -61,7 +61,7 @@ Altcoins are maintained by their respective communities.
 
 ## Documentation
 
-Please check out our [complete documentation](https://github.com/btcpayserver/btcpayserver-doc) and [FAQ](https://github.com/btcpayserver/btcpayserver-doc/tree/master/FAQ#btcpay-frequently-asked-questions-and-common-issues) for more details. 
+Please check out our [official website](https://btcpayserver.org/), our [complete documentation](https://github.com/btcpayserver/btcpayserver-doc) and [FAQ](https://github.com/btcpayserver/btcpayserver-doc/tree/master/FAQ#btcpay-frequently-asked-questions-and-common-issues) for more details. 
 
 If you have any troubles with BTCPay, please file a [Github issue](https://github.com/btcpayserver/btcpayserver/issues).
 For general questions, please join the community chat on [Mattermost](https://chat.btcpayserver.org/).

btcpayserver.sln

@@ -10,6 +10,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Misc", "Misc", "{29290EC7-00E6-4C4B-96D9-4D7E9611DF28}"
 	ProjectSection(SolutionItems) = preProject
 		.circleci\config.yml = .circleci\config.yml
+		docker-entrypoint.sh = docker-entrypoint.sh
 		Dockerfile.linuxamd64 = Dockerfile.linuxamd64
 		Dockerfile.linuxarm32v7 = Dockerfile.linuxarm32v7
 	EndProjectSection

docker-entrypoint.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo "$(/sbin/ip route|awk '/default/ { print $3 }')  host.docker.internal" >> /etc/hosts
+exec dotnet BTCPayServer.dll