refactor: rewrite OpenAI integration

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

src/ViewModels/WorkingCopy.cs

@@ -33,11 +33,6 @@ namespace SourceGit.ViewModels
 
     public class WorkingCopy : ObservableObject
     {
-        public string RepoPath
-        {
-            get => _repo.FullPath;
-        }
-
         public bool IncludeUntracked
         {
             get => _repo.IncludeUntracked;
@@ -408,6 +403,25 @@ namespace SourceGit.ViewModels
             }
         }
 
+        public void GenerateCommitMessageByAI()
+        {
+            if (!Models.OpenAI.IsValid)
+            {
+                App.RaiseException(_repo.FullPath, "Bad configuration for OpenAI");
+                return;
+            }
+
+            if (_staged is { Count: > 0 })
+            {
+                var dialog = new Views.AIAssistant(_repo.FullPath, _staged, generated => CommitMessage = generated);
+                App.OpenDialog(dialog);
+            }
+            else
+            {
+                App.RaiseException(_repo.FullPath, "No files added to commit!");
+            }
+        }
+
         public void Commit()
         {
             DoCommit(false, false, false);

src/Views/AIAssistant.axaml

@@ -7,7 +7,6 @@
                     xmlns:c="using:SourceGit.Converters"
                     mc:Ignorable="d" d:DesignWidth="400" d:DesignHeight="120"
                     x:Class="SourceGit.Views.AIAssistant"
-                    x:DataType="vm:WorkingCopy"
                     x:Name="ThisControl"
                     Icon="/App.ico"
                     Title="{DynamicResource Text.AIAssistant}"
@@ -55,6 +54,7 @@
                Margin="16"
                FontSize="{Binding Source={x:Static vm:Preference.Instance}, Path=DefaultFontSize, Converter={x:Static c:DoubleConverters.Decrease}}"
                HorizontalAlignment="Center"
+               Text="Generating commit message... Please wait!"
                TextTrimming="CharacterEllipsis"/>
   </Grid>
 </v:ChromelessWindow>

src/Views/AIAssistant.axaml.cs

@@ -1,3 +1,5 @@
+using System;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -13,29 +15,37 @@ namespace SourceGit.Views
         {
             _cancel = new CancellationTokenSource();
             InitializeComponent();
-            ProgressMessage.Text = "Generating commit message... Please wait!";
         }
 
-        public void GenerateCommitMessage()
+        public AIAssistant(string repo, List<Models.Change> changes, Action<string> onDone)
         {
-            if (DataContext is ViewModels.WorkingCopy vm)
+            _repo = repo;
+            _changes = changes;
+            _onDone = onDone;
+            _cancel = new CancellationTokenSource();
+            InitializeComponent();
+        }
+
+        protected override void OnOpened(EventArgs e)
         {
+            base.OnOpened(e);
+
+            if (string.IsNullOrEmpty(_repo))
+                return;
+
             Task.Run(() =>
             {
-                    var message = new Commands.GenerateCommitMessage(vm.RepoPath, vm.Staged, _cancel.Token, SetDescription).Result();
+                var message = new Commands.GenerateCommitMessage(_repo, _changes, _cancel.Token, SetDescription).Result();
                 if (_cancel.IsCancellationRequested)
                     return;
 
                 Dispatcher.UIThread.Invoke(() =>
                 {
-                        if (DataContext is ViewModels.WorkingCopy wc)
+                    _onDone?.Invoke(message);
-                            wc.CommitMessage = message;
-
                     Close();
                 });
             }, _cancel.Token);
         }
-        }
 
         protected override void OnClosing(WindowClosingEventArgs e)
         {
@@ -50,12 +60,12 @@ namespace SourceGit.Views
 
         private void SetDescription(string message)
         {
-            Dispatcher.UIThread.Invoke(() =>
+            Dispatcher.UIThread.Invoke(() => ProgressMessage.Text = message);
-            {
-                ProgressMessage.Text = message;
-            });
         }
 
+        private string _repo;
+        private List<Models.Change> _changes;
+        private Action<string> _onDone;
         private CancellationTokenSource _cancel;
     }
 }

src/Views/WorkingCopy.axaml

@@ -199,7 +199,7 @@
         <Button Grid.Column="1"
                 Classes="icon_button"
                 Margin="4,2,0,0"
-                Click="OnOpenAIAssist"
+                Command="{Binding GenerateCommitMessageByAI}"
                 ToolTip.Tip="{DynamicResource Text.AIAssistant.Tip}"
                 ToolTip.Placement="Top"
                 ToolTip.VerticalOffset="0">

src/Views/WorkingCopy.axaml.cs

@@ -120,31 +120,6 @@ namespace SourceGit.Views
             e.Handled = true;
         }
 
-        private void OnOpenAIAssist(object _, RoutedEventArgs e)
-        {
-            if (!Models.OpenAI.IsValid)
-            {
-                App.RaiseException(null, "Bad configuration for OpenAI");
-                return;
-            }
-
-            if (DataContext is ViewModels.WorkingCopy vm)
-            {
-                if (vm.Staged is { Count: > 0 })
-                {
-                    var dialog = new AIAssistant() { DataContext = vm };
-                    dialog.GenerateCommitMessage();
-                    App.OpenDialog(dialog);
-                }
-                else
-                {
-                    App.RaiseException(null, "No files added to commit!");
-                }
-            }
-
-            e.Handled = true;
-        }
-
         private void OnOpenConventionalCommitHelper(object _, RoutedEventArgs e)
         {
             if (DataContext is ViewModels.WorkingCopy vm)