feature: add per-repository setting for prefered OpenAI service

* If there is only one OpenAI service available, discard the setting of prefered OpenAI service. Instead, use it directly
* If there are multiple OpenAI service available, try to find the prefered one or show a context menu for users to choose the one they want to use

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

src/Models/RepositorySettings.cs

@@ -130,6 +130,12 @@ namespace SourceGit.Models
             set;
         } = false;
 
+        public string PreferedOpenAIService
+        {
+            get;
+            set;
+        } = "---";
+
         public void PushCommitMessage(string message)
         {
             var existIdx = CommitMessages.IndexOf(message);

src/Resources/Locales/en_US.axaml

@@ -155,6 +155,9 @@
   <x:String x:Key="Text.Configure.IssueTracker.RuleName" xml:space="preserve">Rule Name:</x:String>
   <x:String x:Key="Text.Configure.IssueTracker.URLTemplate" xml:space="preserve">Result URL:</x:String>
   <x:String x:Key="Text.Configure.IssueTracker.URLTemplate.Tip" xml:space="preserve">Please use $1, $2 to access regex groups values.</x:String>
+  <x:String x:Key="Text.Configure.OpenAI" xml:space="preserve">OPEN AI</x:String>
+  <x:String x:Key="Text.Configure.OpenAI.Prefered" xml:space="preserve">Prefered Service:</x:String>
+  <x:String x:Key="Text.Configure.OpenAI.Prefered.Tip" xml:space="preserve">If the 'Prefered Service' is set, SourceGit will only use it in this repository. Otherwise, if there is more than one service available, a context menu to choose one of them will be shown.</x:String>
   <x:String x:Key="Text.Configure.Proxy" xml:space="preserve">HTTP Proxy</x:String>
   <x:String x:Key="Text.Configure.Proxy.Placeholder" xml:space="preserve">HTTP proxy used by this repository</x:String>
   <x:String x:Key="Text.Configure.User" xml:space="preserve">User Name</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -158,6 +158,9 @@
   <x:String x:Key="Text.Configure.IssueTracker.RuleName" xml:space="preserve">规则名 ：</x:String>
   <x:String x:Key="Text.Configure.IssueTracker.URLTemplate" xml:space="preserve">为ISSUE生成的URL链接 ：</x:String>
   <x:String x:Key="Text.Configure.IssueTracker.URLTemplate.Tip" xml:space="preserve">可在URL中使用$1，$2等变量填入正则表达式匹配的内容</x:String>
+  <x:String x:Key="Text.Configure.OpenAI" xml:space="preserve">OPEN AI</x:String>
+  <x:String x:Key="Text.Configure.OpenAI.Prefered" xml:space="preserve">启用特定服务 ：</x:String>
+  <x:String x:Key="Text.Configure.OpenAI.Prefered.Tip" xml:space="preserve">当【启用特定服务】被设置时，SourceGit将在本仓库中仅使用该服务。否则将弹出可用的OpenAI服务列表供用户选择。</x:String>
   <x:String x:Key="Text.Configure.Proxy" xml:space="preserve">HTTP代理</x:String>
   <x:String x:Key="Text.Configure.Proxy.Placeholder" xml:space="preserve">HTTP网络代理</x:String>
   <x:String x:Key="Text.Configure.User" xml:space="preserve">用户名</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -158,6 +158,9 @@
   <x:String x:Key="Text.Configure.IssueTracker.RuleName" xml:space="preserve">規則名稱:</x:String>
   <x:String x:Key="Text.Configure.IssueTracker.URLTemplate" xml:space="preserve">為 Issue 產生的網址連結:</x:String>
   <x:String x:Key="Text.Configure.IssueTracker.URLTemplate.Tip" xml:space="preserve">可在網址中使用 $1、$2 等變數填入正則表示式相符的內容</x:String>
+  <x:String x:Key="Text.Configure.OpenAI" xml:space="preserve">OPEN AI</x:String>
+  <x:String x:Key="Text.Configure.OpenAI.Prefered" xml:space="preserve">启用特定服务 ：</x:String>
+  <x:String x:Key="Text.Configure.OpenAI.Prefered.Tip" xml:space="preserve">当【启用特定服务】被设置时，SourceGit将在本仓库中仅使用该服务。否则将弹出可用的OpenAI服务列表供用户选择。</x:String>
   <x:String x:Key="Text.Configure.Proxy" xml:space="preserve">HTTP 代理</x:String>
   <x:String x:Key="Text.Configure.Proxy.Placeholder" xml:space="preserve">HTTP 網路代理</x:String>
   <x:String x:Key="Text.Configure.User" xml:space="preserve">使用者名稱</x:String>

src/ViewModels/RepositoryConfigure.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using Avalonia.Collections;
 using CommunityToolkit.Mvvm.ComponentModel;
 
@@ -108,6 +109,18 @@ namespace SourceGit.ViewModels
             set => SetProperty(ref _selectedIssueTrackerRule, value);
         }
 
+        public List<string> AvailableOpenAIServices
+        {
+            get;
+            private set;
+        }
+
+        public string PreferedOpenAIService
+        {
+            get => _repo.Settings.PreferedOpenAIService;
+            set => _repo.Settings.PreferedOpenAIService = value;
+        }
+
         public RepositoryConfigure(Repository repo)
         {
             _repo = repo;
@@ -116,6 +129,13 @@ namespace SourceGit.ViewModels
             foreach (var remote in _repo.Remotes)
                 Remotes.Add(remote.Name);
 
+            AvailableOpenAIServices = new List<string>() { "---" };
+            foreach (var service in Preference.Instance.OpenAIServices)
+                AvailableOpenAIServices.Add(service.Name);
+
+            if (AvailableOpenAIServices.IndexOf(PreferedOpenAIService) == -1)
+                PreferedOpenAIService = "---";               
+
             _cached = new Commands.Config(repo.FullPath).ListAll();
             if (_cached.TryGetValue("user.name", out var name))
                 UserName = name;

src/ViewModels/WorkingCopy.cs

@@ -8,7 +8,6 @@ using Avalonia.Platform.Storage;
 using Avalonia.Threading;
 
 using CommunityToolkit.Mvvm.ComponentModel;
-using SourceGit.Models;
 
 namespace SourceGit.ViewModels
 {
@@ -884,7 +883,7 @@ namespace SourceGit.ViewModels
             var menu = new ContextMenu();
 
             var ai = null as MenuItem;
-            var services = Preference.Instance.OpenAIServices;
+            var services = GetPreferedOpenAIServices();
             if (services.Count > 0)
             {
                 ai = new MenuItem();
@@ -1251,7 +1250,7 @@ namespace SourceGit.ViewModels
                 return null;
             }
 
-            var services = Preference.Instance.OpenAIServices;
+            var services = GetPreferedOpenAIServices();
             if (services.Count == 0)
             {
                 App.RaiseException(_repo.FullPath, "Bad configuration for OpenAI");
@@ -1440,6 +1439,25 @@ namespace SourceGit.ViewModels
             return false;
         }
 
+        private IList<Models.OpenAIService> GetPreferedOpenAIServices()
+        {
+            var services = Preference.Instance.OpenAIServices;
+            if (services == null || services.Count == 0)
+                return [];
+
+            if (services.Count == 1)
+                return services;
+
+            var prefered = _repo.Settings.PreferedOpenAIService;
+            foreach (var service in services)
+            {
+                if (service.Name.Equals(prefered, StringComparison.Ordinal))
+                    return [service];
+            }
+
+            return services;
+        }
+
         private Repository _repo = null;
         private bool _isLoadingData = false;
         private bool _isStaging = false;

src/Views/RepositoryConfigure.axaml

@@ -340,6 +340,39 @@
           </ContentControl>
         </Grid>
       </TabItem>
+
+      <TabItem>
+        <TabItem.Header>
+          <TextBlock Classes="tab_header" Text="{DynamicResource Text.Configure.OpenAI}"/>
+        </TabItem.Header>
+
+        <Grid Margin="16,4,16,8" RowDefinitions="32,Auto" ColumnDefinitions="Auto,*">
+          <TextBlock Grid.Row="0" Grid.Column="0"
+                     HorizontalAlignment="Right" VerticalAlignment="Center"
+                     Margin="0,0,8,0"
+                     Text="{DynamicResource Text.Configure.OpenAI.Prefered}"/>
+          <ComboBox Grid.Row="0" Grid.Column="1"
+                    Height="28" Padding="8,0"
+                    VerticalAlignment="Center" HorizontalAlignment="Stretch"
+                    ItemsSource="{Binding AvailableOpenAIServices}"
+                    SelectedItem="{Binding PreferedOpenAIService, Mode=TwoWay}">
+            <ComboBox.ItemTemplate>
+              <DataTemplate>
+                <StackPanel Orientation="Horizontal" Height="20" VerticalAlignment="Center">
+                  <Path Width="12" Height="12" Data="{StaticResource Icons.AIAssist}" Fill="{DynamicResource Brush.FG1}"/>
+                  <TextBlock Margin="6,0,0,0" Text="{Binding}"/>
+                </StackPanel>
+              </DataTemplate>
+            </ComboBox.ItemTemplate>
+          </ComboBox>
+
+          <TextBlock Grid.Row="1" Grid.Column="1"
+                     Margin="0,6,0,0"
+                     Text="{DynamicResource Text.Configure.OpenAI.Prefered.Tip}"
+                     TextWrapping="Wrap"
+                     Foreground="{DynamicResource Brush.FG2}"/>
+        </Grid>
+      </TabItem>
     </TabControl>
   </Grid>
 </v:ChromelessWindow>