Completed token service

LiteCharms.Features.MidrandBooks/Payments/Events/Handlers/PayfastPaymentConfirmationReceivedEventHandler.cs

@@ -1,15 +1,16 @@
-using LiteCharms.Features.Hasher;
-using LiteCharms.Features.Hasher.Configuration;
+using LiteCharms.Features.Api.Configuration;
+using LiteCharms.Features.Hasher;
 using LiteCharms.Features.Mediator;
 using LiteCharms.Features.MidrandBooks.Orders;
 using LiteCharms.Features.MidrandBooks.Payments.Models;
 
 namespace LiteCharms.Features.MidrandBooks.Payments.Events.Handlers;
 
-public sealed class PayfastPaymentConfirmationReceivedEventHandler(IServiceProvider services, IOptions<HasherSettings> hasherOptions, ILogger<PayfastPaymentConfirmationReceivedEvent> logger) :
+public sealed class PayfastPaymentConfirmationReceivedEventHandler(IServiceProvider services, 
+    IOptions<PayfastSettings> payfastOptions, ILogger<PayfastPaymentConfirmationReceivedEvent> logger) :
     INotificationHandler<PayfastPaymentConfirmationReceivedEvent>
 {
-    private readonly HasherSettings hasherSettings = hasherOptions.Value;
+    private readonly PayfastSettings pasfastSettings = payfastOptions.Value;
 
     public async ValueTask Handle(PayfastPaymentConfirmationReceivedEvent notification, CancellationToken cancellationToken)
     {
@@ -25,7 +26,7 @@ public sealed class PayfastPaymentConfirmationReceivedEventHandler(IServiceProvi
         var payload = notification.Payload ?? throw new Exception("Payload metadata context context is null.");
 
         var dict = payload.ToParamDictionary();
-        var localSignature = PayfastService.GenerateSignature(dict, hasherSettings.PayfastPassphrase);
+        var localSignature = PayfastService.GenerateSignature(dict, pasfastSettings.Passphrase);
 
         if (localSignature.IsFailed)
             throw new Exception("Failed to generate local signature for incoming webhook payload.");
@@ -159,6 +160,5 @@ public sealed class PayfastPaymentConfirmationReceivedEventHandler(IServiceProvi
             logger.LogInformation("Webhook validation pipeline passed checks successfully, logged entry to ledger with status: {Status}", status);
         }
         activity?.SetStatus(ActivityStatusCode.Ok);
-
     }
 }

LiteCharms.Features.MidrandBooks/Payments/PayfastService.cs

@@ -1,4 +1,5 @@
 using LiteCharms.Features.Abstractions;
+using LiteCharms.Features.Api.Configuration;
 using LiteCharms.Features.Hasher;
 using LiteCharms.Features.MidrandBooks.Payments.Models;
 using LiteCharms.Features.MidrandBooks.Postgres;
@@ -6,13 +7,11 @@ using LiteCharms.Features.MidrandBooks.Postgres;
 namespace LiteCharms.Features.MidrandBooks.Payments;
 
 public sealed partial class PayfastService(IDbContextFactory<MidrandBooksDbContext> contextFactory, 
-    ILogger<PayfastService> logger, IHttpClientFactory httpClientFactory, IConfiguration configuration) : IService
+    IOptions<PayfastSettings> payfastOptions, ILogger<PayfastService> logger, IHttpClientFactory httpClientFactory) : IService
 {
     [GeneratedRegex(@"%[0-9A-Fa-f]{2}", RegexOptions.None, matchTimeoutMilliseconds: 1000)]
     public static partial Regex PercentEncodingRegex { get; }
 
-    public readonly string[] ValidHosts = configuration.GetSection("ValidPayfastHosts").Get<string[]>() ?? [];
-
     public async ValueTask<Result<long>> WriteLedgerEntryAsync(CreateGatewayLedgerEntry request, CancellationToken cancellationToken = default)
     {
         try
@@ -51,6 +50,9 @@ public sealed partial class PayfastService(IDbContextFactory<MidrandBooksDbConte
 
     public async ValueTask<Result<bool>> ValidateReferrerIpAsync(string remoteIpAddress, bool allowLoopback = false, CancellationToken cancellationToken = default)
     {
+        if(payfastOptions.Value?.ValidHosts?.Length == 0)
+            return Result.Fail<bool>("Valid payfast hosts not configured.");
+
         if (string.IsNullOrWhiteSpace(remoteIpAddress)) 
             return Result.Fail<bool>("Remote IP address is null or whitespace.");
 
@@ -58,7 +60,7 @@ public sealed partial class PayfastService(IDbContextFactory<MidrandBooksDbConte
         {
             var validIps = new HashSet<IPAddress>();
 
-            foreach (var host in ValidHosts)
+            foreach (var host in payfastOptions.Value!.ValidHosts!)
             {
                 try
                 {

LiteCharms.Features.Tests.Common/Fixture.cs

@@ -36,6 +36,7 @@ public class Fixture : IDisposable
             .AddHashServices(Configuration)
             .AddLiteCharmsApiSecurity(Configuration)
             .AddSecurityApiSdk(Configuration)
+            .AddPayfastServices(Configuration)
             .BuildServiceProvider(); ;
 
         Mediator = Services.GetRequiredService<IMediator>();

LiteCharms.Features.Tests.Common/appsettings.json

@@ -1,4 +1,16 @@
 {
+  "PayfastSettings": {
+    "CheckoutUrl": "https://sandbox.payfast.co.za/eng/process",
+    "ValidHosts": [
+      "www.payfast.co.za",
+      "sandbox.payfast.co.za",
+      "w1w.payfast.co.za",
+      "w2w.payfast.co.za",
+      "ips.payfast.co.za",
+      "api.payfast.co.za",
+      "payment.payfast.io"
+    ]
+  },
   "LiteCharmsSettings": {
     "Authority": "https://sts.security.khongisa.co.za",
     "Audience": "midrandbooks-api"
@@ -8,15 +20,6 @@
     "GrantType": "client_credentials",
     "Scope": "midrandbooks-api"
   },
-  "ValidPayfastHosts": [
-    "www.payfast.co.za",
-    "sandbox.payfast.co.za",
-    "w1w.payfast.co.za",
-    "w2w.payfast.co.za",
-    "ips.payfast.co.za",
-    "api.payfast.co.za",
-    "payment.payfast.io"
-  ],
   "HasherSettings": {
     "MinHashLength": 11
   },

LiteCharms.Features.Tests/LiteCharms.Features.Tests.csproj

@@ -31,6 +31,7 @@
     <Using Include="System.Text" />
     <Using Include="Mediator" />
     <Using Include="Xunit.Abstractions" />
+    <Using Include="Microsoft.Extensions.Options" />
     <Using Include="Microsoft.Extensions.DependencyInjection" />
     <Using Include="Microsoft.Extensions.Configuration" />
   </ItemGroup>

LiteCharms.Features.Tests/PayfastFeatureTests.cs

@@ -0,0 +1,18 @@
+using LiteCharms.Features.Api.Configuration;
+using LiteCharms.Features.Tests.Common;
+
+namespace LiteCharms.Features.Tests;
+
+public sealed class PayfastFeatureTests(Fixture fixture) : IClassFixture<Fixture>
+{
+    private readonly PayfastSettings payfastSettings = fixture.Services.GetRequiredService<IOptions<PayfastSettings>>().Value;
+
+    [IntegrationFact]
+    public void PayfastSettings_ShouldFail_IfNotLoaded()
+    {
+        Assert.NotEmpty(payfastSettings.CheckoutUrl!);
+        Assert.NotEmpty(payfastSettings.MerchantId!);
+        Assert.NotEmpty(payfastSettings.MerchantKey!);
+        Assert.NotEmpty(payfastSettings.Passphrase!);
+    }
+}

LiteCharms.Features/Api/Configuration/PayfastSettings.cs

@@ -0,0 +1,14 @@
+namespace LiteCharms.Features.Api.Configuration;
+
+public sealed class PayfastSettings
+{
+    public string? CheckoutUrl { get; set; }
+
+    public string? Passphrase { get; set; }
+
+    public string? MerchantId { get; set; }
+
+    public string? MerchantKey { get; set; }
+
+    public string[]? ValidHosts { get; set; }
+}

LiteCharms.Features/Extensions/Api.cs

@@ -10,6 +10,15 @@ public static class Api
     public const string Books = nameof(Books);
     public const string Payments = nameof(Payments);
 
+    public static IServiceCollection AddPayfastServices(this IServiceCollection services, IConfiguration configuration)
+    {
+        var configSection = configuration.GetSection(nameof(PayfastSettings));
+
+        services.Configure<PayfastSettings>(configSection);
+
+        return services;
+    }
+    
     public static IServiceCollection AddSecurityApiSdk(this IServiceCollection services, IConfiguration configuration)
     {
         var configSection = configuration.GetSection(nameof(LiteCharmsClientSettings));