do not use Loader to check creds

Azaion.LoaderUI/AzaionApi.cs

@@ -3,26 +3,28 @@ using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Text;
+using Microsoft.Extensions.Logging;
 using Newtonsoft.Json;
 
 namespace Azaion.LoaderUI;
 
 public interface IAzaionApi
 {
-    void Login(ApiCredentials credentials);
+    Task Validate(ApiCredentials credentials);
     Task<string> GetLastInstallerName(string folder);
     Task<(string name, Stream stream)> DownloadInstaller(string folder);
 }
 
-public class AzaionApi(HttpClient client) : IAzaionApi
+public class AzaionApi(HttpClient client, ILogger<Login> logger) : IAzaionApi
 {
     private string _jwtToken = null!;
-    const string APP_JSON = "application/json";
+    private const string APP_JSON = "application/json";
     private ApiCredentials _credentials = null!;
 
-    public void Login(ApiCredentials credentials)
+    public async Task Validate(ApiCredentials credentials)
     {
         _credentials = credentials;
+        await Get<bool>("/resources/check");
     }
 
     public async Task<string> GetLastInstallerName(string folder)

Azaion.LoaderUI/Login.xaml.cs

@@ -1,18 +1,13 @@
 using System.Diagnostics;
 using System.IO;
-using System.Text;
 using System.Text.RegularExpressions;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
 using Azaion.Common;
-using MessagePack;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
-using NetMQ;
-using NetMQ.Sockets;
-
 
 namespace Azaion.LoaderUI;
 
@@ -41,24 +36,23 @@ public partial class Login
 
     private async void LoginClick(object sender, RoutedEventArgs e)
     {
-        var creds = new ApiCredentials
+        var credentials = new ApiCredentials
         {
             Email = TbEmail.Text,
             Password = TbPassword.Password
         };
-        if (string.IsNullOrWhiteSpace(creds.Email) || string.IsNullOrWhiteSpace(creds.Password))
+        if (string.IsNullOrWhiteSpace(credentials.Email) || string.IsNullOrWhiteSpace(credentials.Password))
             return;
 
         try
         {
             SetControlsStatus(isLoading: true);
-            _azaionApi.Login(creds);
+            await _azaionApi.Validate(credentials);
-            Validate(creds);
 
             TbStatus.Foreground = Brushes.Black;
             var localVersion = Constants.GetLocalVersion();
             var installerVersion = await GetInstallerVer() ?? localVersion;
-            var credsEncrypted = Security.Encrypt(creds);
+            var credsEncrypted = Security.Encrypt(credentials);
 
             if (installerVersion > localVersion)
             {
@@ -97,69 +91,6 @@ public partial class Login
         }
     }
 
-    private void Validate(ApiCredentials creds)
-    {
-        var dealer = new DealerSocket();
-        try
-        {
-            using var process = new Process();
-            process.StartInfo = new ProcessStartInfo
-            {
-                FileName = Constants.EXTERNAL_LOADER_PATH,
-                Arguments = $"--port {ConstantsLoader.EXTERNAL_LOADER_PORT} --api {Constants.DEFAULT_API_URL}",
-                CreateNoWindow = true
-            };
-            process.Start();
-            dealer.Options.Identity = Encoding.UTF8.GetBytes(Guid.NewGuid().ToString("N"));
-            dealer.Connect($"tcp://{Constants.DEFAULT_ZMQ_INFERENCE_HOST}:{ConstantsLoader.EXTERNAL_LOADER_PORT}");
-
-            var result = SendCommand(dealer, RemoteCommand.Create(CommandType.Login, creds));
-            if (result.CommandType != CommandType.Ok)
-                throw new Exception(result.Message);
-
-            result = SendCommand(dealer, RemoteCommand.Create(CommandType.CheckResource));
-            if (result.CommandType != CommandType.Ok)
-                throw new Exception(result.Message);
-        }
-        catch (Exception e)
-        {
-            _logger.LogError(e, e.Message);
-            throw;
-        }
-        finally
-        {
-            SendCommand(dealer, RemoteCommand.Create(CommandType.Exit));
-            dealer.Close();
-            dealer.Dispose();
-        }
-    }
-
-    private RemoteCommand SendCommand(DealerSocket dealer, RemoteCommand command, int retryCount = 30, int retryDelayMs = 800)
-    {
-        try
-        {
-            dealer.SendFrame(MessagePackSerializer.Serialize(command));
-
-            var tryNum = 0;
-            while (tryNum++ < retryCount)
-            {
-                if (!dealer.TryReceiveFrameBytes(TimeSpan.FromMilliseconds(retryDelayMs), out var bytes))
-                    continue;
-                var res = MessagePackSerializer.Deserialize<RemoteCommand>(bytes);
-                if (res.CommandType == CommandType.Error)
-                    throw new Exception(res.Message);
-                return res;
-            }
-
-            throw new Exception($"Sent {command} {retryCount} times, with wait time {retryDelayMs}ms for each call. No response from client.");
-        }
-        catch (Exception e)
-        {
-            _logger.LogError(e, e.Message);
-            throw;
-        }
-    }
-
     private async Task<Version?> GetInstallerVer()
     {
         TbStatus.Text = "Checking for the newer version...";