Added template for "Save new card" case - Card.cshtml.

Changed code to handle it.

src/Dynamicweb.Ecommerce.CheckoutHandlers.QuickPayPaymentWindow.csproj

@@ -24,6 +24,16 @@
     	<ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
     	<PublishRepositoryUrl>true</PublishRepositoryUrl>
 	</PropertyGroup>
+	<ItemGroup>
+	  <None Remove="Updates\Card.cshtml" />
+	  <None Remove="Updates\InlineForm.cshtml" />
+	  <None Remove="Updates\Post.cshtml" />
+	</ItemGroup>
+	<ItemGroup>
+	  <EmbeddedResource Include="Updates\Card.cshtml" />
+	  <EmbeddedResource Include="Updates\InlineForm.cshtml" />
+	  <EmbeddedResource Include="Updates\Post.cshtml" />
+	</ItemGroup>
 	<ItemGroup>
 		<PackageReference Include="Dynamicweb.Ecommerce" Version="10.4.2" />
 		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />

src/Hash.cs

@@ -0,0 +1,45 @@
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Dynamicweb.Ecommerce.CheckoutHandlers.QuickPayPaymentWindow;
+
+internal static class Hash
+{
+    public static string ByteArrayToHexString(byte[] bytes)
+    {
+        var result = new StringBuilder();
+        foreach (byte b in bytes)
+        {
+            result.Append(b.ToString("x2"));
+        }
+
+        return result.ToString();
+    }
+
+    public static string ComputeHash(string key, Stream message)
+    {
+        var encoding = new UTF8Encoding();
+        var byteKey = encoding.GetBytes(key);
+
+        using (HMACSHA256 hmac = new HMACSHA256(byteKey))
+        {
+            var hashedBytes = hmac.ComputeHash(message);
+            return ByteArrayToHexString(hashedBytes);
+        }
+    }
+
+    public static string ComputeHash(string key, string message)
+    {
+        var encoding = new UTF8Encoding();
+        var byteKey = encoding.GetBytes(key);
+
+        using (HMACSHA256 hmac = new HMACSHA256(byteKey))
+        {
+            var messageBytes = encoding.GetBytes(message);
+            var hashedBytes = hmac.ComputeHash(messageBytes);
+
+            return ByteArrayToHexString(hashedBytes);
+        }
+    }
+}

src/Models/CardLinkUrl.cs

@@ -0,0 +1,10 @@
+using System.Runtime.Serialization;
+
+namespace Dynamicweb.Ecommerce.CheckoutHandlers.QuickPayPaymentWindow.Models;
+
+[DataContract]
+internal sealed class CardLinkUrl
+{
+    [DataMember(Name = "url")]
+    public string Url { get; set; }
+}

src/Models/Frontend/CallbackError.cs

@@ -0,0 +1,11 @@
+using System.Runtime.Serialization;
+
+namespace Dynamicweb.Ecommerce.CheckoutHandlers.QuickPayPaymentWindow.Models.Frontend;
+
+//This is a model for ajax-interactions with our templates only
+[DataContract]
+internal sealed class CallbackError
+{
+    [DataMember(Name = "errorMessage")]
+    public string ErrorMessage { get; set; }
+}

src/Models/Frontend/CreateCardRequestData.cs

@@ -0,0 +1,35 @@
+using System.Runtime.Serialization;
+
+namespace Dynamicweb.Ecommerce.CheckoutHandlers.QuickPayPaymentWindow.Models.Frontend;
+
+//This is a model for ajax-interactions with our templates only
+[DataContract]
+internal sealed class CreateCardRequestData
+{
+    [DataMember(Name = "agreementId")]
+    public string AgreementId { get; set; }
+
+    [DataMember(Name = "brandingId")]
+    public string BrandingId { get; set; }
+
+    [DataMember(Name = "languageCode")]
+    public string LanguageCode { get; set; }
+
+    [DataMember(Name = "paymentMethods")]
+    public string PaymentMethods { get; set; }
+
+    [DataMember(Name = "googleAnalyticsTrackingId")]
+    public string GoogleAnalyticsTrackingId { get; set; }
+
+    [DataMember(Name = "googleAnalyticsClientId")]
+    public string GoogleAnalyticsClientId { get; set; }
+
+    [DataMember(Name = "receiptUrl")]
+    public string ReceiptUrl { get; set; }
+
+    [DataMember(Name = "cancelUrl")]
+    public string CancelUrl { get; set; }
+
+    [DataMember(Name = "callbackUrl")]
+    public string СallbackUrl { get; set; }
+}

src/Models/Error.cs → src/Models/ServiceError.cs

@@ -2,7 +2,8 @@
 
 namespace Dynamicweb.Ecommerce.CheckoutHandlers.QuickPayPaymentWindow.Models;
 
-internal sealed class Error
+[DataContract]
+internal sealed class ServiceError
 {
     [DataMember(Name = "message")]
     public string Message { get; set; }