Add notifications

src/Axepta.SDK/Entities/Response/Notification.cs

@@ -0,0 +1,7 @@
+namespace Axepta.SDK;
+
+public sealed record Notification
+{
+    [JsonPropertyName("payment")]
+    public required Payment Payment { get; init; }
+}

src/Axepta.SDK/Entities/Response/NotificationPayment.cs

@@ -0,0 +1,49 @@
+namespace Axepta.SDK;
+
+public sealed record NotificationPayment
+{
+    [JsonPropertyName("id")]
+    public required Guid Id { get; init; }
+
+    [JsonPropertyName("title")]
+    public required string Title { get; init; }
+
+    [JsonPropertyName("amount")]
+    public required int Amount { get; init; }
+
+    [JsonPropertyName("status")]
+    public required string Status { get; init; }
+
+    [JsonPropertyName("created")]
+    public required int Created { get; init; }
+
+    [JsonPropertyName("orderId")]
+    public required string OrderId { get; init; }
+
+    [JsonPropertyName("currency")]
+    public required string Currency { get; init; }
+
+    [JsonPropertyName("modified")]
+    public required int Modified { get; init; }
+
+    [JsonPropertyName("serviceId")]
+    public required Guid ServiceId { get; init; }
+
+    [JsonPropertyName("notificationUrl")]
+    public required string NotificationUrl { get; init; }
+
+    [JsonPropertyName("amountPaid")]
+    public required int AmountPaid { get; init; }
+
+    [JsonPropertyName("amountRefunded")]
+    public required int AmountRefunded { get; init; }
+
+    [JsonPropertyName("amountSubmittedRefund")]
+    public required int AmountSubmittedRefund { get; init; }
+
+    [JsonPropertyName("transactions")]
+    public required IReadOnlyList<Transaction> Transactions { get; init; }
+
+    [JsonPropertyName("notifyTransactionData")]
+    public required NotificationTransactionData NotifyTransactionData { get; init; }
+}

src/Axepta.SDK/Entities/Response/NotificationTransaction.cs

@@ -0,0 +1,46 @@
+namespace Axepta.SDK;
+
+public sealed record NotificationTransaction
+{
+    [JsonPropertyName("id")]
+    public required Guid Id { get; init; }
+
+    [JsonPropertyName("type")]
+    public required string Type { get; init; }
+
+    [JsonPropertyName("status")]
+    public required string Status { get; init; }
+
+    [JsonPropertyName("source")]
+    public required string Source { get; init; }
+
+    [JsonPropertyName("created")]
+    public required int Created { get; init; }
+
+    [JsonPropertyName("modified")]
+    public required int Modified { get; init; }
+
+    [JsonPropertyName("notificationUrl")]
+    public required string NotificationUrl { get; init; }
+
+    [JsonPropertyName("serviceId")]
+    public required Guid ServiceId { get; init; }
+
+    [JsonPropertyName("amount")]
+    public required int Amount { get; init; }
+
+    [JsonPropertyName("currency")]
+    public required string Currency { get; init; }
+
+    [JsonPropertyName("title")]
+    public required string Title { get; init; }
+
+    [JsonPropertyName("orderId")]
+    public required string OrderId { get; init; }
+
+    [JsonPropertyName("paymentMethod")]
+    public required PaymentMethod PaymentMethod { get; init; }
+
+    [JsonPropertyName("paymentMethodCode")]
+    public required string PaymentMethodCode { get; init; }
+}

src/Axepta.SDK/Entities/Response/NotificationTransactionData.cs

@@ -0,0 +1,10 @@
+namespace Axepta.SDK;
+
+public sealed record NotificationTransactionData
+{
+    [JsonPropertyName("id")]
+    public required Guid Id { get; init; }
+
+    [JsonPropertyName("type")]
+    public required string Type { get; init; }
+}

src/Axepta.SDK/Entities/Response/PaymentResponse.cs

@@ -3,62 +3,62 @@ namespace Axepta.SDK;
 public sealed record PaymentResponse
 {
     [JsonPropertyName("id")]
-    public required string Id { get; set; }
+    public required string Id { get; init; }
 
     [JsonPropertyName("url")]
-    public string? Url { get; set; }
+    public string? Url { get; init; }
 
     [JsonPropertyName("serviceId")]
-    public Guid? ServiceId { get; set; }
+    public Guid? ServiceId { get; init; }
 
     [JsonPropertyName("orderId")]
-    public string? OrderId { get; set; }
+    public string? OrderId { get; init; }
 
     [JsonPropertyName("amount")]
-    public string? Amount { get; set; }
+    public string? Amount { get; init; }
 
     [JsonPropertyName("amountPaid")]
-    public int? AmountPaid { get; set; }
+    public int? AmountPaid { get; init; }
 
     [JsonPropertyName("amountRefunded")]
-    public int? AmountRefunded { get; set; }
+    public int? AmountRefunded { get; init; }
 
     [JsonPropertyName("amountSubmittedRefund")]
-    public int? AmountSubmittedRefund { get; set; }
+    public int? AmountSubmittedRefund { get; init; }
 
     [JsonPropertyName("currency")]
-    public string? Currency { get; set; }
+    public string? Currency { get; init; }
 
     [JsonPropertyName("status")]
-    public required OrderStatus Status { get; set; }
+    public required OrderStatus Status { get; init; }
 
     [JsonPropertyName("isActive")]
-    public bool? IsActive { get; set; }
+    public bool? IsActive { get; init; }
 
     [JsonPropertyName("createdAt")]
-    public int? CreatedAt { get; set; }
+    public int? CreatedAt { get; init; }
 
     [JsonPropertyName("modifiedAt")]
-    public int? ModifiedAt { get; set; }
+    public int? ModifiedAt { get; init; }
 
     [JsonPropertyName("isGenerated")]
-    public bool? IsGenerated { get; set; }
+    public bool? IsGenerated { get; init; }
 
     [JsonPropertyName("isUsed")]
-    public bool? IsUsed { get; set; }
+    public bool? IsUsed { get; init; }
 
     [JsonPropertyName("isConfirmVisited")]
-    public bool? IsConfirmVisited { get; set; }
+    public bool? IsConfirmVisited { get; init; }
 
     [JsonPropertyName("returnUrl")]
-    public string? ReturnUrl { get; set; }
+    public string? ReturnUrl { get; init; }
 
     [JsonPropertyName("failureReturnUrl")]
-    public string? FailureReturnUrl { get; set; }
+    public string? FailureReturnUrl { get; init; }
 
     [JsonPropertyName("successReturnUrl")]
-    public string? SuccessReturnUrl { get; set; }
+    public string? SuccessReturnUrl { get; init; }
 
     [JsonPropertyName("customer")]
-    public Customer? Customer { get; set; }
+    public Customer? Customer { get; init; }
 }

src/Axepta.SDK/Entities/Response/ResponseRoot.cs

@@ -3,8 +3,8 @@ namespace Axepta.SDK;
 public sealed class ResponseRoot
 {
     [JsonPropertyName("status")]
-    public required string Status { get; set; }
+    public required string Status { get; init; }
 
     [JsonPropertyName("data")]
-    public required Data Data { get; set; }
+    public required Data Data { get; init; }
 }

src/Axepta.SDK/Extensions.cs

@@ -55,6 +55,8 @@ IConfiguration cfg
                 )
             );
 
+        services.AddScoped<IAxeptaSignatureValidator, AxeptaSignatureValidator>();
+
         return services;
     }
 

src/Axepta.SDK/Services/Abstractions/IAxeptaSignatureValidator.cs

@@ -0,0 +1,10 @@
+namespace Axepta.SDK;
+
+internal interface IAxeptaSignatureValidator
+{
+    bool IsValidSignature(
+        string signature,
+        string body,
+        string alg
+    );
+}

src/Axepta.SDK/Services/AxeptaSignatureValidator.cs

@@ -0,0 +1,28 @@
+namespace Axepta.SDK;
+
+internal sealed class AxeptaSignatureValidator : IAxeptaSignatureValidator
+{
+    public bool IsValidSignature(
+        string incomingSignature,
+        string body,
+        string alg
+    )
+    {
+        if (alg is "sha256")
+        {
+            using var sha256Hash = SHA256.Create();
+
+            var bytes = sha256Hash.ComputeHash(Encoding.UTF8.GetBytes(body));
+            var builder = new StringBuilder();
+
+            for (var i = 0; i < bytes.Length; i++)
+                builder.Append(bytes[i].ToString("x2"));
+
+            var signature = builder.ToString();
+
+            return signature == incomingSignature;
+        }
+
+        return false;
+    }
+}

src/Axepta.SDK/Usings.cs

@@ -2,6 +2,7 @@
 global using System.Text.Json;
 global using System.Text;
 global using System.Text.Json.Serialization;
+global using System.Security.Cryptography;
 global using System.ComponentModel.DataAnnotations;
 global using Microsoft.Extensions.DependencyInjection;
 global using Microsoft.Extensions.Configuration;

tests/Axepta.SDK.Tests/AxeptaSignatureValidatorTests.cs

@@ -0,0 +1,29 @@
+namespace Axepta.SDK.Tests;
+
+public sealed class AxeptaSignatureValidatorTests
+{
+    private const string BODY = "";
+    private const string INCOMING_SIGNATURE = "";
+    private const string SHA256_ALG = "sha256";
+
+    [Fact]
+    public void IsValidSignature_WithCorrectSha256Signature_ReturnsTrue()
+    {
+
+    }
+
+    [Fact]
+    public void IsValidSignature_WithIncorrectSha256Signature_ReturnsFalse()
+    {
+    }
+
+    [Theory]
+    [InlineData("sha1")]
+    [InlineData("md5")]
+    [InlineData("")]
+    [InlineData(null)]
+    public void IsValidSignature_WithUnsupportedAlgorithm_ReturnsFalse(string alg)
+    {
+
+    }
+}