Some fixes

src/Proxarr.Api/Configuration/AppConfiguration.cs

@@ -12,7 +12,7 @@ public sealed class AppConfiguration
 
         public string FULL_SCAN_CRON { get; set; } = "0 6 * * 1";
 
-        public List<ClientInstance> Clients { get; set; }
+        public List<ClientConfiguration> Clients { get; set; }
 
         private Dictionary<string, string[]> _watchProviders;
 
@@ -57,17 +57,4 @@ private Dictionary<string, string[]> InitProviders()
             return dict;
         }
     }
-
-    public sealed class ClientInstance
-    {
-        /// <summary>
-        /// The name of the application (Sonarr or Radarr)
-        /// </summary>
-        public required string Application { get; set; }
-        public required string BaseUrl { get; set; }
-        public required string ApiKey { get; set; }
-
-        public bool IsSonarr => Application.Equals("Sonarr", StringComparison.OrdinalIgnoreCase);
-        public bool IsRadarr => Application.Equals("Radarr", StringComparison.OrdinalIgnoreCase);
-    }
 }

src/Proxarr.Api/Configuration/ClientConfiguration.cs

@@ -3,7 +3,16 @@
     public sealed class ClientConfiguration
     {
         public const string SECTION_NAME = $"{AppConfiguration.SECTION_NAME}:Clients";
+
+        /// <summary>
+        /// Must be Sonarr or Radarr
+        /// </summary>
+        public required string Application { get; set; }
         public required string ApiKey { get; set; }
         public required string BaseUrl { get; set; }
+
+
+        public bool IsSonarr => Application.Equals("Sonarr", StringComparison.OrdinalIgnoreCase);
+        public bool IsRadarr => Application.Equals("Radarr", StringComparison.OrdinalIgnoreCase);
     }
 }

src/Proxarr.Api/Core/ApiKeyDelegatingHandler.cs

@@ -1,28 +1,31 @@
-using Proxarr.Api.Configuration;
+using Microsoft.Extensions.Options;
+using Proxarr.Api.Configuration;
 
 namespace Proxarr.Api.Core
 {
     public class ApiKeyDelegatingHandler : DelegatingHandler
     {
         private const string API_KEY_HEADER_NAME = "X-API-KEY";
 
-        private readonly IConfiguration _configuration;
+        private readonly AppConfiguration _configuration;
+        private readonly ILogger<ApiKeyDelegatingHandler> _logger;
 
-        public ApiKeyDelegatingHandler(IConfiguration configuration)
+        public ApiKeyDelegatingHandler(IOptions<AppConfiguration> configuration, ILogger<ApiKeyDelegatingHandler> logger)
         {
-            _configuration = configuration;
+            _configuration = configuration?.Value ?? throw new ArgumentNullException(nameof(configuration));
+            _logger = logger;
         }
 
         protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
         {
             if (!request.Headers.Contains(API_KEY_HEADER_NAME) && request.RequestUri != null)
             {
                 var key = $"{request.RequestUri.Scheme}://{request.RequestUri.Host}";
-                var clients = _configuration.GetSection(ClientConfiguration.SECTION_NAME).Get<List<ClientConfiguration>>();
-                var clientConfig = clients?.FirstOrDefault(x => x.BaseUrl.Equals(key, StringComparison.OrdinalIgnoreCase));
+                var clientConfig = _configuration.Clients?.FirstOrDefault(x => x.BaseUrl.Equals(key, StringComparison.OrdinalIgnoreCase));
 
                 if (clientConfig != null)
                 {
+                    _logger.LogInformation("Adding API Key to request for {BaseUrl}", clientConfig.BaseUrl);
                     request.Headers.Add(API_KEY_HEADER_NAME, clientConfig.ApiKey);
                 }
             }