fix: fetch AI models in background to avoid main window waiting to show (#2267)

Signed-off-by: leo <longshuang@msn.cn>

src/AI/Service.cs

@@ -2,7 +2,6 @@
 using System.ClientModel;
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using CommunityToolkit.Mvvm.ComponentModel;
 using OpenAI;
@@ -55,7 +54,7 @@ namespace SourceGit.AI
             set;
         } = string.Empty;
 
-        public async Task<List<string>> FetchAvailableModelsAsync()
+        public void FetchAvailableModels()
         {
             var allModels = GetOpenAIClient().GetOpenAIModelClient().GetModels();
             AvailableModels = new List<string>();
@@ -71,8 +70,6 @@ namespace SourceGit.AI
             {
                 Model = null;
             }
-
-            return AvailableModels;
         }
 
         public ChatClient GetChatClient()

src/App.axaml.cs

@@ -547,6 +547,7 @@ namespace SourceGit
 
             var pref = ViewModels.Preferences.Instance;
             pref.SetCanModify();
+            pref.UpdateAvailableAIModels();
 
             _launcher = new ViewModels.Launcher(startupRepo);
             desktop.MainWindow = new Views.Launcher() { DataContext = _launcher };

src/ViewModels/Preferences.cs

@@ -629,19 +629,22 @@ namespace SourceGit.ViewModels
             RemoveInvalidRepositoriesRecursive(RepositoryNodes);
         }
 
-        public async Task UpdateAvailableAIModelsAsync()
+        public void UpdateAvailableAIModels()
         {
-            foreach (var service in OpenAIServices)
+            Task.Run(() =>
             {
-                try
+                foreach (var service in OpenAIServices)
                 {
-                    await service.FetchAvailableModelsAsync();
+                    try
+                    {
+                        service.FetchAvailableModels();
+                    }
+                    catch
+                    {
+                        // Ignore errors.
+                    }
                 }
-                catch
-                {
-                    // Ignore errors.
-                }
-            }
+            });
         }
 
         public void Save()

src/Views/Launcher.axaml.cs

@@ -106,7 +106,7 @@ namespace SourceGit.Views
                 Activate();
         }
 
-        protected override async void OnOpened(EventArgs e)
+        protected override void OnOpened(EventArgs e)
         {
             base.OnOpened(e);
 
@@ -114,8 +114,6 @@ namespace SourceGit.Views
             var state = preferences.Layout.LauncherWindowState;
             if (state == WindowState.Maximized || state == WindowState.FullScreen)
                 WindowState = WindowState.Maximized;
-
-            await preferences.UpdateAvailableAIModelsAsync();
         }
 
         protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)

src/Views/Preferences.axaml.cs

@@ -206,7 +206,7 @@ namespace SourceGit.Views
             }
 
             var preferences = ViewModels.Preferences.Instance;
-            await preferences.UpdateAvailableAIModelsAsync();
+            preferences.UpdateAvailableAIModels();
             preferences.Save();
         }