Completed token service

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
                 {