Refactor and expand REST action authentication support

Refactored authentication logic for REST actions to use a structured switch block, adding explicit support for ApiKey, BearerToken, JwtBearer, OAuth2, BasicAuth, and NTLM authentication types. Introduced dedicated HttpClient/Handler for NTLM with proper disposal. Improved extensibility, clarity, and resource management. Added IOptions and Options usage for configuration.

src/ReC.Application/RecActions/Commands/InvokeRecActionViewCommand.cs

@@ -1,9 +1,11 @@
 using MediatR;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Options;
 using ReC.Application.Common;
 using ReC.Application.Common.Constants;
 using ReC.Application.Common.Dto;
 using ReC.Application.Common.Exceptions;
+using ReC.Application.Common.Options;
 using ReC.Application.Common.Procedures.InsertProcedure;
 using ReC.Application.Results.Commands;
 using ReC.Domain.Constants;
@@ -32,8 +34,6 @@ public class InvokeRecActionViewCommandHandler(
     {
         var action = request.Action;
 
-        using var http = clientFactory.CreateClient(Http.ClientName);
-
         if (action.RestType is not RestType restType)
             throw new DataIntegrityException(
                 $"Rec action could not be invoked because the RestType value is null. " +
@@ -50,6 +50,11 @@ public class InvokeRecActionViewCommandHandler(
             foreach (var header in action.Headers)
                 httpReq.Headers.Add(header.Key, header.Value);
 
+        HttpClient? ntlmClient = null;
+        HttpClientHandler? ntlmHandler = null;
+
+        try
+        {
             switch (action.EndpointAuthType)
             {
                 case EndpointAuthType.NoAuth:
@@ -113,7 +118,12 @@ public class InvokeRecActionViewCommandHandler(
                             endpointAuthPassword,
                             action.EndpointAuthDomain);
                         var credentialCache = new CredentialCache { { httpReq.RequestUri!, "NTLM", credentials } };
-                    httpReq.Options.Set(new HttpRequestOptionsKey<CredentialCache>("Credentials"), credentialCache);
+                        ntlmHandler = new HttpClientHandler
+                        {
+                            Credentials = credentialCache,
+                            UseDefaultCredentials = false
+                        };
+                        ntlmClient = new HttpClient(ntlmHandler);
                     }
                     break;
 
@@ -131,6 +141,7 @@ public class InvokeRecActionViewCommandHandler(
                     );
             }
 
+            using var http = ntlmClient ?? clientFactory.CreateClient(Http.ClientName);
             using var response = await http.SendAsync(httpReq, cancel);
             var resBody = await response.Content.ReadAsStringAsync(cancel);
             var resHeaders = response.Headers.ToDictionary();
@@ -147,6 +158,11 @@ public class InvokeRecActionViewCommandHandler(
 
             return response.IsSuccessStatusCode;
         }
+        finally
+        {
+            ntlmHandler?.Dispose();
+        }
+    }
 
     private static HttpRequestMessage CreateHttpRequestMessage(RestType restType, string? endpointUri)
     {