Implement store templates (#6704)

* Implement store templates

* Use the template for the default rate rules

* Polish messages

* Do not show exchange selection if template has a script

BTCPayServer.Client/Models/StoreBaseData.cs

@@ -17,7 +17,7 @@ namespace BTCPayServer.Client.Models
         public string Website { get; set; }
 
         public string BrandColor { get; set; }
-        public bool ApplyBrandColorToBackend { get; set; }
+        public bool? ApplyBrandColorToBackend { get; set; }
         public string LogoUrl { get; set; }
         public string CssUrl { get; set; }
         public string PaymentSoundUrl { get; set; }
@@ -26,56 +26,56 @@ namespace BTCPayServer.Client.Models
 
         [JsonConverter(typeof(TimeSpanJsonConverter.Seconds))]
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public TimeSpan InvoiceExpiration { get; set; } = TimeSpan.FromMinutes(15);
+        public TimeSpan? InvoiceExpiration { get; set; }
 
         [JsonConverter(typeof(TimeSpanJsonConverter.Seconds))]
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public TimeSpan DisplayExpirationTimer { get; set; } = TimeSpan.FromMinutes(5);
+        public TimeSpan? DisplayExpirationTimer { get; set; }
 
         [JsonConverter(typeof(TimeSpanJsonConverter.Days))]
         [JsonProperty("refundBOLT11Expiration", NullValueHandling = NullValueHandling.Ignore)]
-        public TimeSpan RefundBOLT11Expiration { get; set; } = TimeSpan.FromDays(30);
+        public TimeSpan? RefundBOLT11Expiration { get; set; }
 
         [JsonConverter(typeof(TimeSpanJsonConverter.Seconds))]
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public TimeSpan MonitoringExpiration { get; set; } = TimeSpan.FromMinutes(60);
+        public TimeSpan? MonitoringExpiration { get; set; }
 
         [JsonConverter(typeof(StringEnumConverter))]
-        public SpeedPolicy SpeedPolicy { get; set; }
+        public SpeedPolicy? SpeedPolicy { get; set; }
         public string LightningDescriptionTemplate { get; set; }
-        public double PaymentTolerance { get; set; } = 0;
+        public double? PaymentTolerance { get; set; }
-        public bool AnyoneCanCreateInvoice { get; set; }
+        public bool? AnyoneCanCreateInvoice { get; set; }
         public string DefaultCurrency { get; set; }
 
-        public bool LightningAmountInSatoshi { get; set; }
+        public bool? LightningAmountInSatoshi { get; set; }
-        public bool LightningPrivateRouteHints { get; set; }
+        public bool? LightningPrivateRouteHints { get; set; }
-        public bool OnChainWithLnInvoiceFallback { get; set; }
+        public bool? OnChainWithLnInvoiceFallback { get; set; }
-        public bool LazyPaymentMethods { get; set; }
+        public bool? LazyPaymentMethods { get; set; }
-        public bool RedirectAutomatically { get; set; }
+        public bool? RedirectAutomatically { get; set; }
 
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public bool Archived { get; set; }
+        public bool? Archived { get; set; }
 
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public bool ShowRecommendedFee { get; set; } = true;
+        public bool? ShowRecommendedFee { get; set; }
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public int RecommendedFeeBlockTarget { get; set; } = 1;
+        public int? RecommendedFeeBlockTarget { get; set; }
 
         public string DefaultPaymentMethod { get; set; }
 
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public string DefaultLang { get; set; } = "en";
+        public string DefaultLang { get; set; }
 
         public string HtmlTitle { get; set; }
 
         [JsonConverter(typeof(StringEnumConverter))]
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
-        public NetworkFeeMode NetworkFeeMode { get; set; } = NetworkFeeMode.Never;
+        public NetworkFeeMode? NetworkFeeMode { get; set; }
 
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
         public List<PaymentMethodCriteriaData> PaymentMethodCriteria { get; set; }
 
-        public bool PayJoinEnabled { get; set; }
+        public bool? PayJoinEnabled { get; set; }
 
         [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
         public bool? AutoDetectLanguage { get; set; }

BTCPayServer.Data/Migrations/20250501000000_storetemplate.cs

@@ -0,0 +1,45 @@
+using BTCPayServer.Data;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace BTCPayServer.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20250501000000_storetemplate")]
+    public partial class storetemplate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // This migrates the old `Default Currency` settings from Server Settings to a Default Store Template.
+            migrationBuilder.Sql(
+                """
+                UPDATE "Settings"
+                SET "Value" =
+                    jsonb_set(
+                        -- remove "DefaultCurrency", create a template
+                        ("Value" - 'DefaultCurrency') || '{"DefaultStoreTemplate":{"blob":{}}}'::JSONB,
+                        -- path to insert the new nested value
+                        '{DefaultStoreTemplate,blob,defaultCurrency}',
+                        -- extract the old value of "DefaultCurrency"
+                        to_jsonb("Value"->'DefaultCurrency'),
+                        true
+                    )
+                WHERE "Id" = 'BTCPayServer.Services.PoliciesSettings'
+                  AND "Value" ? 'DefaultCurrency' AND "Value"->>'DefaultCurrency' != 'USD';
+
+                UPDATE "Settings"
+                SET "Value" = "Value" - 'DefaultCurrency'
+                WHERE "Id" = 'BTCPayServer.Services.PoliciesSettings'
+                  AND "Value" ? 'DefaultCurrency';
+                """);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+        }
+    }
+}

BTCPayServer.Rating/RateSourceInfo.cs

@@ -5,4 +5,4 @@ public enum RateSource
     Coingecko,
     Direct
 }
-public record RateSourceInfo(string Id, string DisplayName, string Url, RateSource Source = RateSource.Direct);
+public record RateSourceInfo(string? Id, string DisplayName, string Url, RateSource Source = RateSource.Direct);

BTCPayServer.Tests/PlaywrightTester.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
-using System.IO;
 using System.Linq;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
@@ -15,7 +14,6 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Playwright;
 using NBitcoin;
 using NBitcoin.RPC;
-using OpenQA.Selenium;
 using Xunit;
 
 namespace BTCPayServer.Tests
@@ -42,8 +40,6 @@ namespace BTCPayServer.Tests
             await Server.StartAsync();
             var builder = new ConfigurationBuilder();
             builder.AddUserSecrets("AB0AC1DD-9D26-485B-9416-56A33F268117");
-            var config = builder.Build();
-
             var playwright = await Playwright.CreateAsync();
             Browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions
             {
@@ -93,7 +89,7 @@ namespace BTCPayServer.Tests
             }
             else
             {
-                await GoToUrl(storeId == null ? "/invoices/" : $"/stores/{storeId}/invoices/");
+                await GoToUrl($"/stores/{storeId}/invoices/");
                 StoreId = storeId;
             }
         }
@@ -123,9 +119,9 @@ namespace BTCPayServer.Tests
                 await Page.SelectOptionAsync("select[name='DefaultPaymentMethod']", new SelectOptionValue { Value = defaultPaymentMethod });
             await ClickPagePrimary();
 
-            var statusText = (await FindAlertMessage(expectedSeverity)).TextContentAsync();
+            var statusText = await (await FindAlertMessage(expectedSeverity)).TextContentAsync();
             var inv = expectedSeverity == StatusMessageModel.StatusSeverity.Success
-                ? Regex.Match(await statusText, @"Invoice (\w+) just created!").Groups[1].Value
+                ? Regex.Match(statusText!, @"Invoice (\w+) just created!").Groups[1].Value
                 : null;
 
             InvoiceId = inv;
@@ -225,20 +221,28 @@ namespace BTCPayServer.Tests
             return new TestAccount(Server) { StoreId = StoreId, Email = CreatedUser, Password = Password, RegisterDetails = new Models.AccountViewModels.RegisterViewModel() { Password = "123456", Email = CreatedUser }, IsAdmin = IsAdmin };
         }
 
-        public async Task<(string storeName, string storeId)> CreateNewStore(bool keepId = true)
+        public async Task<(string storeName, string storeId)> CreateNewStore(bool keepId = true, string preferredExchange = "CoinGecko")
         {
-            if (await Page.Locator("#StoreSelectorToggle").IsVisibleAsync())
+            if (!Page.Url.EndsWith("stores/create"))
             {
-                await Page.Locator("#StoreSelectorToggle").ClickAsync();
+                if (await Page.Locator("#StoreSelectorToggle").IsVisibleAsync())
+                {
+                    await Page.ClickAsync("#StoreSelectorToggle");
+                    await Page.ClickAsync("#StoreSelectorCreate");
+                }
+                else
+                {
+                    await GoToUrl("/stores/create");
+                }
             }
-            await GoToUrl("/stores/create");
+
             var name = "Store" + RandomUtils.GetUInt64();
             TestLogs.LogInformation($"Created store {name}");
             await Page.FillAsync("#Name", name);
 
             var selectedOption = await Page.Locator("#PreferredExchange option:checked").TextContentAsync();
-            Assert.Equal("Recommendation (Kraken)", selectedOption.Trim());
+            Assert.Equal("Recommendation (Kraken)", selectedOption?.Trim());
-            await Page.Locator("#PreferredExchange").SelectOptionAsync(new SelectOptionValue { Label = "CoinGecko" });
+            await Page.Locator("#PreferredExchange").SelectOptionAsync(new SelectOptionValue { Label = preferredExchange });
             await Page.ClickAsync("#Create");
             await Page.ClickAsync("#StoreNav-General");
             var storeId = await Page.InputValueAsync("#Id");
@@ -471,7 +475,7 @@ namespace BTCPayServer.Tests
             walletId ??= WalletId;
             await GoToWallet(walletId, WalletsNavPages.Receive);
             var addressStr = await Page.Locator("#Address").GetAttributeAsync("data-text");
-            var address = BitcoinAddress.Create(addressStr, ((BTCPayNetwork)Server.NetworkProvider.GetNetwork(walletId.CryptoCode)).NBitcoinNetwork);
+            var address = BitcoinAddress.Create(addressStr!, ((BTCPayNetwork)Server.NetworkProvider.GetNetwork(walletId.CryptoCode)).NBitcoinNetwork);
             for (var i = 0; i < coins; i++)
             {
                 bool mined = false;

BTCPayServer.Tests/PlaywrightTests.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using System.Net;
 using System.Threading.Tasks;
 using BTCPayServer.Abstractions.Models;
+using BTCPayServer.Client.Models;
 using BTCPayServer.Data;
 using BTCPayServer.Services;
 using BTCPayServer.Services.Invoices;
@@ -12,6 +13,7 @@ using BTCPayServer.Views.Stores;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.Playwright;
 using NBitcoin;
+using Newtonsoft.Json.Linq;
 using Xunit;
 using Xunit.Abstractions;
 
@@ -38,7 +40,6 @@ namespace BTCPayServer.Tests
             Assert.Contains("Starting listening NBXplorer", await s.Page.ContentAsync());
         }
 
-
         [Fact]
         public async Task CanUseForms()
         {
@@ -489,5 +490,92 @@ namespace BTCPayServer.Tests
             Assert.DoesNotContain("Configured", await s.Page.ContentAsync());
             Assert.Contains("test_fix", await s.Page.ContentAsync());
         }
+
+        [Fact]
+        public async Task CanUseStoreTemplate()
+        {
+            await using var s = CreatePlaywrightTester(newDb: true);
+            await s.StartAsync();
+            await s.RegisterNewUser(true);
+            await s.CreateNewStore(preferredExchange: "Kraken");
+            var client = await s.AsTestAccount().CreateClient();
+            await client.UpdateStore(s.StoreId, new UpdateStoreRequest()
+            {
+                Name = "Can Use Store?",
+                Website = "https://test.com/",
+                CelebratePayment = false,
+                DefaultLang = "fr-FR",
+                NetworkFeeMode = NetworkFeeMode.MultiplePaymentsOnly,
+                ShowStoreHeader = false
+            });
+            await s.GoToServer();
+            await s.Page.ClickAsync("#SetTemplate");
+            await s.FindAlertMessage();
+
+            var newStore = await client.CreateStore(new ());
+            Assert.Equal("Can Use Store?", newStore.Name);
+            Assert.Equal("https://test.com/", newStore.Website);
+            Assert.False(newStore.CelebratePayment);
+            Assert.Equal("fr-FR", newStore.DefaultLang);
+            Assert.Equal(NetworkFeeMode.MultiplePaymentsOnly, newStore.NetworkFeeMode);
+            Assert.False(newStore.ShowStoreHeader);
+
+            newStore = await client.CreateStore(new (){ Name = "Yes you can also customize"});
+            Assert.Equal("Yes you can also customize", newStore.Name);
+            Assert.Equal("https://test.com/", newStore.Website);
+            Assert.False(newStore.CelebratePayment);
+            Assert.Equal("fr-FR", newStore.DefaultLang);
+            Assert.Equal(NetworkFeeMode.MultiplePaymentsOnly, newStore.NetworkFeeMode);
+            Assert.False(newStore.ShowStoreHeader);
+
+            await s.GoToUrl("/stores/create");
+            Assert.Equal("Can Use Store?" ,await s.Page.InputValueAsync("#Name"));
+            await s.Page.FillAsync("#Name", "Just changed it!");
+            await s.Page.ClickAsync("#Create");
+            await s.Page.ClickAsync("#StoreNav-General");
+            var newStoreId = await s.Page.InputValueAsync("#Id");
+            Assert.NotEqual(newStoreId, s.StoreId);
+
+            newStore = await client.GetStore(newStoreId);
+            Assert.Equal("Just changed it!", newStore.Name);
+            Assert.Equal("https://test.com/", newStore.Website);
+            Assert.False(newStore.CelebratePayment);
+            Assert.Equal("fr-FR", newStore.DefaultLang);
+            Assert.Equal(NetworkFeeMode.MultiplePaymentsOnly, newStore.NetworkFeeMode);
+            Assert.False(newStore.ShowStoreHeader);
+
+            await s.GoToServer();
+            await s.Page.ClickAsync("#ResetTemplate");
+            await s.FindAlertMessage(partialText: "Store template successfully unset");
+
+            await s.GoToUrl("/stores/create");
+            Assert.Equal("" ,await s.Page.InputValueAsync("#Name"));
+
+            newStore = await client.CreateStore(new (){ Name = "Test"});
+            Assert.Equal(TimeSpan.FromDays(30), newStore.RefundBOLT11Expiration);
+            Assert.Equal(TimeSpan.FromDays(1), newStore.MonitoringExpiration);
+            Assert.Equal(TimeSpan.FromMinutes(5), newStore.DisplayExpirationTimer);
+            Assert.Equal(TimeSpan.FromMinutes(15), newStore.InvoiceExpiration);
+
+            // What happens if the default template doesn't have all the fields?
+            var settings = s.Server.PayTester.GetService<SettingsRepository>();
+            var policies = await settings.GetSettingAsync<PoliciesSettings>() ?? new();
+            policies.DefaultStoreTemplate = new JObject()
+            {
+                ["blob"] = new JObject()
+                {
+                    ["defaultCurrency"] = "AAA",
+                    ["defaultLang"] = "de-DE"
+                }
+            };
+            await settings.UpdateSetting(policies);
+            newStore = await client.CreateStore(new() { Name = "Test2"});
+            Assert.Equal("AAA", newStore.DefaultCurrency);
+            Assert.Equal("de-DE", newStore.DefaultLang);
+            Assert.Equal(TimeSpan.FromDays(30), newStore.RefundBOLT11Expiration);
+            Assert.Equal(TimeSpan.FromDays(1), newStore.MonitoringExpiration);
+            Assert.Equal(TimeSpan.FromMinutes(5), newStore.DisplayExpirationTimer);
+            Assert.Equal(TimeSpan.FromMinutes(15), newStore.InvoiceExpiration);
+        }
     }
 }

BTCPayServer.Tests/UnitTest1.cs

@@ -1449,7 +1449,8 @@ namespace BTCPayServer.Tests
 
                 var script = await tester.Page.InputValueAsync($"#{source}_Script");
                 var defaultScript = await tester.Page.GetAttributeAsync($"#{source}_DefaultScript", "data-defaultScript");
-                Assert.Equal(script, defaultScript);
+                Assert.Contains("X_JPY = bitbank(X_JPY);", defaultScript);
+                Assert.Contains("X_TRY = btcturk(X_TRY);", defaultScript);
 
                 await Test("BTC_JPY");
                 rules = await tester.Page.Locator(".testresult .testresult_rule").AllAsync();

BTCPayServer/Controllers/GreenField/GreenfieldStoresController.cs

@@ -1,8 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Threading.Tasks;
-using Amazon.Runtime.Internal;
 using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Contracts;
 using BTCPayServer.Abstractions.Extensions;
@@ -19,7 +19,9 @@ using Microsoft.AspNetCore.Cors;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
-using static System.Runtime.InteropServices.JavaScript.JSType;
+using Microsoft.Extensions.Options;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
 using StoreData = BTCPayServer.Data.StoreData;
 
 namespace BTCPayServer.Controllers.Greenfield
@@ -34,12 +36,14 @@ namespace BTCPayServer.Controllers.Greenfield
         private readonly UserManager<ApplicationUser> _userManager;
         private readonly IFileService _fileService;
         private readonly UriResolver _uriResolver;
+        private readonly JsonSerializerSettings _serializedSettings;
 
         public GreenfieldStoresController(
             StoreRepository storeRepository,
             CurrencyNameTable currencyNameTable,
             UserManager<ApplicationUser> userManager,
             IFileService fileService,
+            IOptions<MvcNewtonsoftJsonOptions> jsonOptions,
             UriResolver uriResolver)
         {
             _storeRepository = storeRepository;
@@ -47,6 +51,7 @@ namespace BTCPayServer.Controllers.Greenfield
             _userManager = userManager;
             _fileService = fileService;
             _uriResolver = uriResolver;
+            _serializedSettings = jsonOptions.Value.SerializerSettings;
         }
 
         [Authorize(Policy = Policies.CanViewStoreSettings, AuthenticationSchemes = AuthenticationSchemes.Greenfield)]
@@ -77,7 +82,7 @@ namespace BTCPayServer.Controllers.Greenfield
             var store = HttpContext.GetStoreData();
             if (store == null) return StoreNotFound();
 
-            await _storeRepository.RemoveStore(storeId, _userManager.GetUserId(User));
+            await _storeRepository.RemoveStore(storeId, _userManager.GetUserId(User) ?? "");
             return Ok();
         }
 
@@ -85,27 +90,39 @@ namespace BTCPayServer.Controllers.Greenfield
         [Authorize(Policy = Policies.CanModifyStoreSettingsUnscoped, AuthenticationSchemes = AuthenticationSchemes.Greenfield)]
         public async Task<IActionResult> CreateStore(CreateStoreRequest request)
         {
+            var store = await _storeRepository.GetDefaultStoreTemplate();
+            request = await MergeStoreRequestWithTemplate(request, store);
             var validationResult = Validate(request);
             if (validationResult != null) return validationResult;
-
+            ToModel(request, store);
-            var store = new StoreData();
+            await _storeRepository.CreateStore(_userManager.GetUserId(User) ?? "", store);
-            PaymentMethodId.TryParse(request.DefaultPaymentMethod, out var defaultPaymentMethodId);
-            ToModel(request, store, defaultPaymentMethodId);
-            await _storeRepository.CreateStore(_userManager.GetUserId(User), store);
             return Ok(await FromModel(store));
         }
 
+        private async Task<T> MergeStoreRequestWithTemplate<T>(T request, StoreData store) where T: StoreBaseData
+        {
+            var serializer = JsonSerializer.Create(_serializedSettings);
+            var requestRaw = JObject.FromObject(request, serializer);
+            var templateRaw = JObject.FromObject(await FromModel(store), serializer);
+            templateRaw.Merge(requestRaw,
+                new()
+                {
+                    MergeNullValueHandling = MergeNullValueHandling.Ignore,
+                    MergeArrayHandling = MergeArrayHandling.Replace
+                });
+            return templateRaw.ToObject<T>(serializer);
+        }
+
         [Authorize(Policy = Policies.CanModifyStoreSettings, AuthenticationSchemes = AuthenticationSchemes.Greenfield)]
         [HttpPut("~/api/v1/stores/{storeId}")]
         public async Task<IActionResult> UpdateStore(string storeId, UpdateStoreRequest request)
         {
             var store = HttpContext.GetStoreData();
             if (store == null) return StoreNotFound();
+            request = await MergeStoreRequestWithTemplate(request, store);
             var validationResult = Validate(request);
             if (validationResult != null) return validationResult;
-
+            ToModel(request, store);
-            PaymentMethodId.TryParse(request.DefaultPaymentMethod, out var defaultPaymentMethodId);
-            ToModel(request, store, defaultPaymentMethodId);
             await _storeRepository.UpdateStore(store);
             return Ok(await FromModel(store));
         }
@@ -223,13 +240,16 @@ namespace BTCPayServer.Controllers.Greenfield
             };
         }
 
-        private void ToModel(StoreBaseData restModel, StoreData model, PaymentMethodId defaultPaymentMethod)
+        [SuppressMessage("ReSharper", "PossibleInvalidOperationException")]
+        private void ToModel(StoreBaseData restModel, StoreData model)
         {
+            // Dereference on .Value is fine. Those values should be set by the template
             var blob = model.GetStoreBlob();
             model.StoreName = restModel.Name;
             model.StoreWebsite = restModel.Website;
-            model.Archived = restModel.Archived;
+            model.Archived = restModel.Archived.Value;
-            model.SpeedPolicy = restModel.SpeedPolicy;
+            model.SpeedPolicy = restModel.SpeedPolicy.Value;
+            PaymentMethodId.TryParse(restModel.DefaultPaymentMethod, out var defaultPaymentMethod);
             model.SetDefaultPaymentId(defaultPaymentMethod);
             //we do not include the default payment method in this model and instead opt to set it in the stores/storeid/payment-methods endpoints
             //blob
@@ -237,31 +257,31 @@ namespace BTCPayServer.Controllers.Greenfield
             //we do not include ExcludedPaymentMethods in this model and instead opt to set it in stores/storeid/payment-methods endpoints
             //we do not include EmailSettings in this model and instead opt to set it in stores/storeid/email endpoints
             //we do not include OnChainMinValue and LightningMaxValue because moving the CurrencyValueJsonConverter to the Client csproj is hard and requires a refactor (#1571 & #1572)
-            blob.NetworkFeeMode = restModel.NetworkFeeMode;
+            blob.NetworkFeeMode = restModel.NetworkFeeMode.Value;
             blob.DefaultCurrency = restModel.DefaultCurrency;
             blob.ReceiptOptions = InvoiceDataBase.ReceiptOptions.Merge(restModel.Receipt, null);
-            blob.LightningAmountInSatoshi = restModel.LightningAmountInSatoshi;
+            blob.LightningAmountInSatoshi = restModel.LightningAmountInSatoshi.Value;
-            blob.LightningPrivateRouteHints = restModel.LightningPrivateRouteHints;
+            blob.LightningPrivateRouteHints = restModel.LightningPrivateRouteHints.Value;
-            blob.OnChainWithLnInvoiceFallback = restModel.OnChainWithLnInvoiceFallback;
+            blob.OnChainWithLnInvoiceFallback = restModel.OnChainWithLnInvoiceFallback.Value;
-            blob.LazyPaymentMethods = restModel.LazyPaymentMethods;
+            blob.LazyPaymentMethods = restModel.LazyPaymentMethods.Value;
-            blob.RedirectAutomatically = restModel.RedirectAutomatically;
+            blob.RedirectAutomatically = restModel.RedirectAutomatically.Value;
-            blob.ShowRecommendedFee = restModel.ShowRecommendedFee;
+            blob.ShowRecommendedFee = restModel.ShowRecommendedFee.Value;
-            blob.RecommendedFeeBlockTarget = restModel.RecommendedFeeBlockTarget;
+            blob.RecommendedFeeBlockTarget = restModel.RecommendedFeeBlockTarget.Value;
             blob.DefaultLang = restModel.DefaultLang;
             blob.StoreSupportUrl = restModel.SupportUrl;
-            blob.MonitoringExpiration = restModel.MonitoringExpiration;
+            blob.MonitoringExpiration = restModel.MonitoringExpiration.Value;
-            blob.InvoiceExpiration = restModel.InvoiceExpiration;
+            blob.InvoiceExpiration = restModel.InvoiceExpiration.Value;
-            blob.DisplayExpirationTimer = restModel.DisplayExpirationTimer;
+            blob.DisplayExpirationTimer = restModel.DisplayExpirationTimer.Value;
             blob.HtmlTitle = restModel.HtmlTitle;
-            blob.AnyoneCanInvoice = restModel.AnyoneCanCreateInvoice;
+            blob.AnyoneCanInvoice = restModel.AnyoneCanCreateInvoice.Value;
             blob.LightningDescriptionTemplate = restModel.LightningDescriptionTemplate;
-            blob.PaymentTolerance = restModel.PaymentTolerance;
+            blob.PaymentTolerance = restModel.PaymentTolerance.Value;
-            blob.PayJoinEnabled = restModel.PayJoinEnabled;
+            blob.PayJoinEnabled = restModel.PayJoinEnabled.Value;
             blob.BrandColor = restModel.BrandColor;
-            blob.ApplyBrandColorToBackend = restModel.ApplyBrandColorToBackend;
+            blob.ApplyBrandColorToBackend = restModel.ApplyBrandColorToBackend.Value;
             blob.LogoUrl = restModel.LogoUrl is null ? null : UnresolvedUri.Create(restModel.LogoUrl);
             blob.CssUrl = restModel.CssUrl is null ? null : UnresolvedUri.Create(restModel.CssUrl);
-            blob.RefundBOLT11Expiration = restModel.RefundBOLT11Expiration;
+            blob.RefundBOLT11Expiration = restModel.RefundBOLT11Expiration.Value;
             blob.PaymentSoundUrl = restModel.PaymentSoundUrl is null ? null : UnresolvedUri.Create(restModel.PaymentSoundUrl);
             if (restModel.AutoDetectLanguage.HasValue)
                 blob.AutoDetectLanguage = restModel.AutoDetectLanguage.Value;
@@ -336,24 +356,25 @@ namespace BTCPayServer.Controllers.Greenfield
             {
                 for (int index = 0; index < request.PaymentMethodCriteria.Count; index++)
                 {
+                    var i = index;
                     PaymentMethodCriteriaData pmc = request.PaymentMethodCriteria[index];
                     if (string.IsNullOrEmpty(pmc.CurrencyCode))
                     {
-                        request.AddModelError(data => data.PaymentMethodCriteria[index].CurrencyCode, "CurrencyCode is required", this);
+                        request.AddModelError(data => data.PaymentMethodCriteria[i].CurrencyCode, "CurrencyCode is required", this);
                     }
                     else if (_currencyNameTable.GetCurrencyData(pmc.CurrencyCode, false) is null)
                     {
-                        request.AddModelError(data => data.PaymentMethodCriteria[index].CurrencyCode, "CurrencyCode is invalid", this);
+                        request.AddModelError(data => data.PaymentMethodCriteria[i].CurrencyCode, "CurrencyCode is invalid", this);
                     }
 
                     if (string.IsNullOrEmpty(pmc.PaymentMethodId) || PaymentMethodId.TryParse(pmc.PaymentMethodId) is null)
                     {
-                        request.AddModelError(data => data.PaymentMethodCriteria[index].PaymentMethodId, "Payment method was invalid", this);
+                        request.AddModelError(data => data.PaymentMethodCriteria[i].PaymentMethodId, "Payment method was invalid", this);
                     }
 
                     if (pmc.Amount < 0)
                     {
-                        request.AddModelError(data => data.PaymentMethodCriteria[index].Amount, "Amount must be greater than 0", this);
+                        request.AddModelError(data => data.PaymentMethodCriteria[i].Amount, "Amount must be greater than 0", this);
                     }
                 }
             }

BTCPayServer/Controllers/UIServerController.cs

@@ -351,6 +351,34 @@ namespace BTCPayServer.Controllers
         {
             await UpdateViewBag();
 
+            if (command == "ResetTemplate")
+            {
+                ModelState.Clear();
+                await _StoreRepository.SetDefaultStoreTemplate(null);
+                this.TempData.SetStatusSuccess(StringLocalizer["Store template successfully unset"]);
+                return RedirectToAction(nameof(Policies));
+            }
+
+            if (command == "SetTemplate")
+            {
+                ModelState.Clear();
+                var storeId = this.HttpContext.GetStoreData()?.Id;
+                if (storeId is null)
+                {
+                    this.TempData.SetStatusMessageModel(new()
+                    {
+                        Severity = StatusMessageModel.StatusSeverity.Error,
+                        Message = StringLocalizer["You need to select a store first"]
+                    });
+                }
+                else
+                {
+                    await _StoreRepository.SetDefaultStoreTemplate(storeId, GetUserId());
+                    this.TempData.SetStatusSuccess(StringLocalizer["Store template created from store '{0}'. New stores will inherit these settings.", HttpContext.GetStoreData().StoreName]);
+                }
+                return RedirectToAction(nameof(Policies));
+            }
+
             if (command == "add-domain")
             {
                 ModelState.Clear();

BTCPayServer/Controllers/UIStoresController.Rates.cs

@@ -72,8 +72,18 @@ public partial class UIStoresController
         {
             var isFallback = command is "scripting-toggle-fallback";
             var rateSettings = storeBlob.GetOrCreateRateSettings(isFallback);
-            rateSettings.RateScripting = !rateSettings.RateScripting;
+
-            rateSettings.RateScript = rateSettings.GetDefaultRateRules(_defaultRules, storeBlob.Spread).ToString();
+            if (!rateSettings.RateScripting)
+            {
+                rateSettings.RateScript = rateSettings.GetDefaultRateRules(_defaultRules, storeBlob.Spread).ToString();
+                rateSettings.RateScripting = true;
+            }
+            else
+            {
+                rateSettings.RateScripting = false;
+                rateSettings.RateScript = null;
+            }
+
             CurrentStore.SetStoreBlob(storeBlob);
             await _storeRepo.UpdateStore(CurrentStore);
             if (rateSettings.RateScripting)
@@ -179,7 +189,7 @@ public partial class UIStoresController
         }
     }
 
-    private void SetViewModel(RatesViewModel.Source vm, StoreBlob.RateSettings? rateSettings, StoreBlob storeBlob)
+    private async Task SetViewModel(RatesViewModel.Source vm, StoreBlob.RateSettings? rateSettings, StoreBlob storeBlob)
     {
         if (rateSettings is null)
             return;
@@ -191,7 +201,9 @@ public partial class UIStoresController
         vm.PreferredResolvedExchange = chosenSource.Id;
         vm.RateSource = chosenSource.Url;
         vm.Script = rateSettings.GetRateRules(_defaultRules, storeBlob.Spread).ToString();
-        vm.DefaultScript = rateSettings.GetDefaultRateRules(_defaultRules, storeBlob.Spread).ToString();
+
+        var defaultRateSettings = (await _storeRepo.GetDefaultStoreTemplate()).GetStoreBlob()?.GetRateSettings(false) ?? new();
+        vm.DefaultScript =  defaultRateSettings.GetDefaultRateRules(_defaultRules, storeBlob.Spread).ToString();
         vm.ShowScripting = rateSettings.RateScripting;
 
         vm.ScriptingConfirm = new()

BTCPayServer/Controllers/UIUserStoresController.cs

@@ -24,7 +24,6 @@ namespace BTCPayServer.Controllers
     {
         private readonly StoreRepository _repo;
         private readonly IStringLocalizer StringLocalizer;
-        private readonly SettingsRepository _settingsRepository;
         private readonly UserManager<ApplicationUser> _userManager;
         private readonly DefaultRulesCollection _defaultRules;
         private readonly RateFetcher _rateFactory;
@@ -35,15 +34,13 @@ namespace BTCPayServer.Controllers
 			DefaultRulesCollection defaultRules,
             StoreRepository storeRepository,
             IStringLocalizer stringLocalizer,
-            RateFetcher rateFactory,
+            RateFetcher rateFactory)
-            SettingsRepository settingsRepository)
         {
             _repo = storeRepository;
             StringLocalizer = stringLocalizer;
             _userManager = userManager;
             _defaultRules = defaultRules;
             _rateFactory = rateFactory;
-            _settingsRepository = settingsRepository;
         }
 
         [HttpGet]
@@ -71,12 +68,16 @@ namespace BTCPayServer.Controllers
         public async Task<IActionResult> CreateStore(bool skipWizard)
         {
             var stores = await _repo.GetStoresByUserId(GetUserId());
-            var defaultCurrency = (await _settingsRepository.GetSettingAsync<PoliciesSettings>())?.DefaultCurrency ?? StoreBlob.StandardDefaultCurrency;
+            var defaultTemplate = await _repo.GetDefaultStoreTemplate();
+            var blob = defaultTemplate.GetStoreBlob();
             var vm = new CreateStoreViewModel
             {
+                Name = defaultTemplate.StoreName,
                 IsFirstStore = !(stores.Any() || skipWizard),
-                DefaultCurrency = defaultCurrency,
+                DefaultCurrency = blob.DefaultCurrency,
-                Exchanges = GetExchangesSelectList(defaultCurrency, null)
+                Exchanges = GetExchangesSelectList(blob.DefaultCurrency, null),
+                CanEditPreferredExchange = blob.GetRateSettings(false)?.RateScripting is not true,
+                PreferredExchange = blob.GetRateSettings(false)?.PreferredExchange
             };
 
             return View(vm);
@@ -90,12 +91,14 @@ namespace BTCPayServer.Controllers
             {
                 var stores = await _repo.GetStoresByUserId(GetUserId());
                 vm.IsFirstStore = !stores.Any();
-                var defaultCurrency = (await _settingsRepository.GetSettingAsync<PoliciesSettings>())?.DefaultCurrency ?? StoreBlob.StandardDefaultCurrency;
+                var template = await _repo.GetDefaultStoreTemplate();
+                var defaultCurrency = template.GetStoreBlob().DefaultCurrency ?? StoreBlob.StandardDefaultCurrency;
                 vm.Exchanges = GetExchangesSelectList(defaultCurrency, null);
                 return View(vm);
             }
 
-            var store = new StoreData { StoreName = vm.Name };
+            var store = await _repo.GetDefaultStoreTemplate();
+            store.StoreName = vm.Name;
             var blob = store.GetStoreBlob();
             blob.DefaultCurrency = vm.DefaultCurrency;
             blob.GetOrCreateRateSettings(false).PreferredExchange = vm.PreferredExchange;

BTCPayServer/Data/StoreDataExtensions.cs

@@ -45,8 +45,6 @@ namespace BTCPayServer.Data
         {
             storeData.DefaultCrypto = defaultPaymentId?.ToString();
         }
-#pragma warning restore CS0618
-
 
         public static StoreBlob GetStoreBlob(this StoreData storeData)
         {
@@ -57,7 +55,7 @@ namespace BTCPayServer.Data
             result.PaymentMethodCriteria.RemoveAll(criteria => criteria?.PaymentMethod is null);
             return result;
         }
-
+#pragma warning restore CS0618
         public static bool AnyPaymentMethodAvailable(this StoreData storeData, PaymentMethodHandlerDictionary handlers)
         {
             return storeData.GetPaymentMethodConfigs(handlers, true).Any();

BTCPayServer/Models/StoreViewModels/CreateStoreViewModel.cs

@@ -22,5 +22,6 @@ namespace BTCPayServer.Models.StoreViewModels
         public string PreferredExchange { get; set; }
 
         public SelectList Exchanges { get; set; }
+        public bool CanEditPreferredExchange { get; set; }
     }
 }

BTCPayServer/Models/StoreViewModels/RatesViewModel.cs

@@ -11,18 +11,23 @@ namespace BTCPayServer.Models.StoreViewModels
         public class Source
         {
             public bool ShowScripting { get; set; }
+
             [Display(Name = "Rate Rules")]
             [MaxLength(2000)]
             public string Script { get; set; }
+
             public string DefaultScript { get; set; }
+
             [Display(Name = "Preferred Price Source")]
             public string PreferredExchange { get; set; }
+
             public SelectList Exchanges { get; set; }
             public string RateSource { get; set; }
             public string PreferredResolvedExchange { get; set; }
             public bool IsFallback { get; set; }
             public ConfirmModel ScriptingConfirm { get; set; }
         }
+
         public class TestResultViewModel
         {
             public string CurrencyPair { get; set; }
@@ -35,8 +40,9 @@ namespace BTCPayServer.Models.StoreViewModels
 
         public Source PrimarySource { get; set; }
         public Source FallbackSource { get; set; }
+
         [Display(Name = "Enable fallback rates")]
-        public bool HasFallback {get; set; }
+        public bool HasFallback { get; set; }
 
         public string ScriptTest { get; set; }
         public string DefaultCurrencyPairs { get; set; }
@@ -45,6 +51,7 @@ namespace BTCPayServer.Models.StoreViewModels
         [Display(Name = "Add Exchange Rate Spread")]
         [Range(0.0, 100.0)]
         public double Spread { get; set; }
+
         public IEnumerable<RateSourceInfo> AvailableExchanges { get; set; }
     }
 }

BTCPayServer/Services/PoliciesSettings.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.ComponentModel.DataAnnotations;
+using BTCPayServer.Data;
 using BTCPayServer.JsonConverters;
 using BTCPayServer.Payments;
 using BTCPayServer.Validation;
@@ -82,8 +83,6 @@ namespace BTCPayServer.Services
 
         [Display(Name = "Show plugins in pre-release")]
         public bool PluginPreReleases { get; set; }
-        [Display(Name = "Select the Default Currency during Store Creation")]
-        public string DefaultCurrency { get; set; }
 
         public bool DisableSSHService { get; set; }
 
@@ -101,6 +100,9 @@ namespace BTCPayServer.Services
         [Display(Name = "Default role for users on a new store")]
         public string DefaultRole { get; set; }
 
+        [Display(Name = "Default store template")]
+        public JObject DefaultStoreTemplate { get; set; }
+
         public class BlockExplorerOverrideItem
         {
             [JsonConverter(typeof(PaymentMethodIdJsonConverter))]

BTCPayServer/Services/Stores/StoreRepository.cs

@@ -5,14 +5,21 @@ using System.Linq;
 using System.Threading.Tasks;
 using BTCPayServer.Abstractions.Contracts;
 using BTCPayServer.Client;
+using BTCPayServer.Client.Models;
 using BTCPayServer.Data;
 using BTCPayServer.Events;
 using BTCPayServer.Migrations;
+using BTCPayServer.Payments;
 using Dapper;
 using Microsoft.EntityFrameworkCore;
 using NBitcoin;
 using NBitcoin.DataEncoders;
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Linq;
+using StoreData = BTCPayServer.Data.StoreData;
+using StoreWebhookData = BTCPayServer.Data.StoreWebhookData;
+using WebhookDeliveryData = BTCPayServer.Data.WebhookDeliveryData;
 
 namespace BTCPayServer.Services.Stores
 {
@@ -695,6 +702,67 @@ retry:
                 LIMIT 1;
                 """, new { storeId })) is true;
         }
+
+        public async Task<StoreData> GetDefaultStoreTemplate()
+        {
+            var data = new StoreData();
+            var policies = await this._settingsRepository.GetSettingAsync<PoliciesSettings>();
+            if (policies?.DefaultStoreTemplate is null)
+                return data;
+            var serializer = new NBXplorer.Serializer(null);
+            serializer.Settings.DefaultValueHandling = DefaultValueHandling.IgnoreAndPopulate;
+            var r = serializer.ToObject<RestrictedStoreData>(policies.DefaultStoreTemplate);
+            if (!string.IsNullOrWhiteSpace(r.StoreName))
+                data.StoreName = r.StoreName;
+            if (r.SpeedPolicy is not null)
+                data.SpeedPolicy = r.SpeedPolicy.Value;
+            if (!string.IsNullOrWhiteSpace(r.StoreWebsite))
+                data.StoreWebsite = r.StoreWebsite;
+            if (!string.IsNullOrWhiteSpace(r.DefaultPaymentMethodId) && PaymentMethodId.TryParse(r.DefaultPaymentMethodId, out var paymentMethodId))
+                data.SetDefaultPaymentId(paymentMethodId);
+            if (r?.Blob is not null)
+                data.SetStoreBlob(r.Blob);
+            return data;
+        }
+        public async Task SetDefaultStoreTemplate(string storeId, string userId)
+        {
+            var storeData = await this.FindStore(storeId, userId);
+            if (storeData is null)
+                throw new InvalidOperationException("Store not found, or incorrect permissions");
+            await SetDefaultStoreTemplate(storeData);
+        }
+        public async Task SetDefaultStoreTemplate(StoreData? store)
+        {
+            var policies = await this._settingsRepository.GetSettingAsync<PoliciesSettings>() ?? new();
+            if (store is null)
+            {
+                policies.DefaultStoreTemplate = null;
+                await _settingsRepository.UpdateSetting(policies);
+                return;
+            }
+            var serializer = new NBXplorer.Serializer(null);
+            serializer.Settings.DefaultValueHandling = DefaultValueHandling.IgnoreAndPopulate;
+            var r = new RestrictedStoreData()
+            {
+                StoreName = store.StoreName,
+                SpeedPolicy = store.SpeedPolicy,
+                StoreWebsite = store.StoreWebsite,
+                DefaultPaymentMethodId = store.GetDefaultPaymentId()?.ToString(),
+                Blob = store.GetStoreBlob()
+            };
+            policies.DefaultStoreTemplate = JObject.Parse(serializer.ToString(r));
+            await _settingsRepository.UpdateSetting(policies);
+        }
+
+        class RestrictedStoreData
+        {
+            public string? StoreName { get; set; }
+            [JsonConverter(typeof(StringEnumConverter))]
+            public SpeedPolicy? SpeedPolicy { get; set; }
+            public string? StoreWebsite { get; set; }
+            public string? DefaultPaymentMethodId { get; set; }
+            public StoreBlob? Blob { get; set; }
+        }
     }
 
     public record StoreRoleId

BTCPayServer/Views/UIServer/Policies.cshtml

@@ -202,8 +202,23 @@
 
                 <h4 class="mt-5" text-translate="true">Customization</h4>
                 <div class="form-group mb-3">
-                    <label asp-for="DefaultCurrency" class="form-label"></label>
+                    <label asp-for="DefaultStoreTemplate" class="form-label"></label>
-                    <input asp-for="DefaultCurrency" placeholder="@StoreBlob.StandardDefaultCurrency" class="form-control" currency-selection />
+                    @if (Model.DefaultStoreTemplate is null)
+                    {
+                        <div class="input-group">
+                            <input value="@StringLocalizer["Not configured"]" type="text" readonly class="form-control"/>
+                            <button type="submit" class="btn btn-primary" name="command" value="SetTemplate" id="SetTemplate" text-translate="true">Create template from selected store</button>
+                        </div>
+                    }
+                    else
+                    {
+                        <div class="input-group">
+                            <input value="@StringLocalizer["Configured"]" type="text" readonly class="form-control"/>
+                            <button type="submit" class="btn btn-primary" name="command" value="SetTemplate" id="SetTemplate" text-translate="true">Replace template from selected store</button>
+                            <button type="submit" class="btn btn-danger" name="command" value="ResetTemplate" id="ResetTemplate" text-translate="true">Remove store template</button>
+                        </div>
+                    }
+                    <div class="form-text" text-translate="true">The store template sets defaults for all new stores. It includes rates settings, default invoice settings, checkout display settings but excludes sensitive data like access tokens, payment method settings, webhooks.</div>
                 </div>
                 <div class="form-group mb-5">
                     <label asp-for="RootAppId" class="form-label"></label>

BTCPayServer/Views/UIUserStores/_CreateStoreForm.cshtml

@@ -1,6 +1,7 @@
 @model BTCPayServer.Models.StoreViewModels.CreateStoreViewModel
 
 <form asp-action="CreateStore">
+    <input type="hidden" asp-for="CanEditPreferredExchange"/>
     @if (!ViewContext.ModelState.IsValid)
     {
         <div asp-validation-summary="ModelOnly"></div>
@@ -15,13 +16,16 @@
         <input asp-for="DefaultCurrency" class="form-control w-300px" currency-selection />
         <span asp-validation-for="DefaultCurrency" class="text-danger"></span>
     </div>
-    <div class="form-group">
+    @if (Model.CanEditPreferredExchange)
-        <label asp-for="PreferredExchange" class="form-label" data-required></label>
+    {
-        <select asp-for="PreferredExchange" asp-items="Model.Exchanges" class="form-select w-300px"></select>
+        <div class="form-group">
-        <div class="form-text mt-2 only-for-js" text-translate="true">The recommended price source gets chosen based on the default currency.</div>
+            <label asp-for="PreferredExchange" class="form-label" data-required></label>
-        <span asp-validation-for="PreferredExchange" class="text-danger"></span>
+            <select asp-for="PreferredExchange" asp-items="Model.Exchanges" class="form-select w-300px"></select>
-    </div>
+            <div class="form-text mt-2 only-for-js" text-translate="true">The recommended price source gets chosen based on the default currency.</div>
+            <span asp-validation-for="PreferredExchange" class="text-danger"></span>
+        </div>
+    }
     <div class="form-group mt-4">
-		<input type="submit" value="Create Store" class="btn btn-primary @(Model.IsFirstStore ? "w-100" : null)" id="Create" />
+        <input type="submit" value="Create Store" class="btn btn-primary @(Model.IsFirstStore ? "w-100" : null)" id="Create" />
     </div>
 </form>

BTCPayServer/wwwroot/swagger/v1/swagger.template.stores.json

@@ -45,7 +45,7 @@
                     "Stores"
                 ],
                 "summary": "Create a new store",
-                "description": "Create a new store",
+                "description": "Create a new store (default values can be different if the server settings use a default store template)",
                 "requestBody": {
                     "x-name": "request",
                     "content": {
@@ -143,7 +143,7 @@
                         "$ref": "#/components/parameters/StoreId"
                     }
                 ],
-                "description": "Update the specified store",
+                "description": "Update the specified store (default values can be different if the server settings use a default store template)",
                 "requestBody": {
                     "x-name": "request",
                     "content": {
@@ -541,7 +541,7 @@
                         ]
                     },
                     "monitoringExpiration": {
-                        "default": 3600,
+                        "default": 86400,
                         "minimum": 600,
                         "maximum": 2073600,
                         "description": "The time after which an invoice which has been paid but not confirmed will be considered invalid. The value will be rounded down to a minute.",