refactor: using official OpenAI library for AI integration

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

src/App.JsonCodeGen.cs

@@ -46,8 +46,6 @@ namespace SourceGit
     [JsonSerializable(typeof(Models.ExternalToolPaths))]
     [JsonSerializable(typeof(Models.InteractiveRebaseJobCollection))]
     [JsonSerializable(typeof(Models.JetBrainsState))]
-    [JsonSerializable(typeof(Models.OpenAIChatRequest))]
-    [JsonSerializable(typeof(Models.OpenAIChatResponse))]
     [JsonSerializable(typeof(Models.ThemeOverrides))]
     [JsonSerializable(typeof(Models.Version))]
     [JsonSerializable(typeof(Models.RepositorySettings))]

src/Commands/GenerateCommitMessage.cs

@@ -20,76 +20,75 @@ namespace SourceGit.Commands
             }
         }
 
-        public GenerateCommitMessage(Models.OpenAIService service, string repo, List<Models.Change> changes, CancellationToken cancelToken, Action<string> onProgress)
+        public GenerateCommitMessage(Models.OpenAIService service, string repo, List<Models.Change> changes, CancellationToken cancelToken, Action<string> onProgress, Action<string> onResponse)
         {
             _service = service;
             _repo = repo;
             _changes = changes;
             _cancelToken = cancelToken;
             _onProgress = onProgress;
+            _onResponse = onResponse;
         }
 
-        public string Result()
+        public void Exec()
         {
             try
             {
-                var summarybuilder = new StringBuilder();
+                var summaryBuilder = new StringBuilder();
                 var bodyBuilder = new StringBuilder();
+                _onResponse?.Invoke("Wait for all file analysis to complete...");
                 foreach (var change in _changes)
                 {
                     if (_cancelToken.IsCancellationRequested)
-                        return "";
+                        return;
 
                     _onProgress?.Invoke($"Analyzing {change.Path}...");
-
-                    var summary = GenerateChangeSummary(change);
-                    summarybuilder.Append("- ");
-                    summarybuilder.Append(summary);
-                    summarybuilder.Append("(file: ");
-                    summarybuilder.Append(change.Path);
-                    summarybuilder.Append(")");
-                    summarybuilder.AppendLine();
+                    _onResponse?.Invoke($"Wait for all file analysis to complete...\n\n{bodyBuilder}");
 
                     bodyBuilder.Append("- ");
-                    bodyBuilder.Append(summary);
-                    bodyBuilder.AppendLine();
+                    summaryBuilder.Append("- ");
+                    GenerateChangeSummary(change, summaryBuilder, bodyBuilder);
+
+                    bodyBuilder.Append("\n");
+                    summaryBuilder.Append("(file: ");
+                    summaryBuilder.Append(change.Path);
+                    summaryBuilder.Append(")\n");
                 }
 
                 if (_cancelToken.IsCancellationRequested)
-                    return "";
+                    return;
 
                 _onProgress?.Invoke($"Generating commit message...");
-
                 var body = bodyBuilder.ToString();
-                var subject = GenerateSubject(summarybuilder.ToString());
-                return string.Format("{0}\n\n{1}", subject, body);
+                GenerateSubject(summaryBuilder.ToString(), body);
             }
             catch (Exception e)
             {
                 App.RaiseException(_repo, $"Failed to generate commit message: {e}");
-                return "";
             }
         }
 
-        private string GenerateChangeSummary(Models.Change change)
+        private void GenerateChangeSummary(Models.Change change, StringBuilder summary, StringBuilder body)
         {
             var rs = new GetDiffContent(_repo, new Models.DiffOption(change, false)).ReadToEnd();
             var diff = rs.IsSuccess ? rs.StdOut : "unknown change";
 
-            var rsp = _service.Chat(_service.AnalyzeDiffPrompt, $"Here is the `git diff` output: {diff}", _cancelToken);
-            if (rsp != null && rsp.Choices.Count > 0)
-                return rsp.Choices[0].Message.Content;
-
-            return string.Empty;
+            _service.Chat(_service.AnalyzeDiffPrompt, $"Here is the `git diff` output: {diff}", _cancelToken, update =>
+            {
+                body.Append(update);
+                summary.Append(update);
+                _onResponse?.Invoke($"Wait for all file analysis to complete...\n\n{body}");
+            });
         }
 
-        private string GenerateSubject(string summary)
+        private void GenerateSubject(string summary, string body)
         {
-            var rsp = _service.Chat(_service.GenerateSubjectPrompt, $"Here are the summaries changes:\n{summary}", _cancelToken);
-            if (rsp != null && rsp.Choices.Count > 0)
-                return rsp.Choices[0].Message.Content;
-
-            return string.Empty;
+            StringBuilder result = new StringBuilder();
+            _service.Chat(_service.GenerateSubjectPrompt, $"Here are the summaries changes:\n{summary}", _cancelToken, update =>
+            {
+                result.Append(update);
+                _onResponse?.Invoke($"{result}\n\n{body}");
+            });
         }
 
         private Models.OpenAIService _service;
@@ -97,5 +96,6 @@ namespace SourceGit.Commands
         private List<Models.Change> _changes;
         private CancellationToken _cancelToken;
         private Action<string> _onProgress;
+        private Action<string> _onResponse;
     }
 }

src/Models/OpenAI.cs

@@ -1,81 +1,16 @@
 using System;
-using System.Collections.Generic;
-using System.Net.Http;
-using System.Text;
-using System.Text.Json;
-using System.Text.Json.Serialization;
+using System.ClientModel;
 using System.Threading;
 
+using Azure.AI.OpenAI;
+
 using CommunityToolkit.Mvvm.ComponentModel;
 
+using OpenAI;
+using OpenAI.Chat;
+
 namespace SourceGit.Models
 {
-    public class OpenAIChatMessage
-    {
-        [JsonPropertyName("role")]
-        public string Role
-        {
-            get;
-            set;
-        }
-
-        [JsonPropertyName("content")]
-        public string Content
-        {
-            get;
-            set;
-        }
-    }
-
-    public class OpenAIChatChoice
-    {
-        [JsonPropertyName("index")]
-        public int Index
-        {
-            get;
-            set;
-        }
-
-        [JsonPropertyName("message")]
-        public OpenAIChatMessage Message
-        {
-            get;
-            set;
-        }
-    }
-
-    public class OpenAIChatResponse
-    {
-        [JsonPropertyName("choices")]
-        public List<OpenAIChatChoice> Choices
-        {
-            get;
-            set;
-        } = [];
-    }
-
-    public class OpenAIChatRequest
-    {
-        [JsonPropertyName("model")]
-        public string Model
-        {
-            get;
-            set;
-        }
-
-        [JsonPropertyName("messages")]
-        public List<OpenAIChatMessage> Messages
-        {
-            get;
-            set;
-        } = [];
-
-        public void AddMessage(string role, string content)
-        {
-            Messages.Add(new OpenAIChatMessage { Role = role, Content = content });
-        }
-    }
-
     public class OpenAIService : ObservableObject
     {
         public string Name
@@ -147,44 +82,42 @@ namespace SourceGit.Models
                 """;
         }
 
-        public OpenAIChatResponse Chat(string prompt, string question, CancellationToken cancellation)
-        {
-            var chat = new OpenAIChatRequest() { Model = Model };
-            chat.AddMessage("system", prompt);
-            chat.AddMessage("user", question);
-
-            var client = new HttpClient() { Timeout = TimeSpan.FromSeconds(60) };
-            if (!string.IsNullOrEmpty(ApiKey))
+        public void Chat(string prompt, string question, CancellationToken cancellation, Action<string> onUpdate)
         {
+            Uri server = new(Server);
+            ApiKeyCredential key = new(ApiKey);
+            ChatClient client = null;
             if (Server.Contains("openai.azure.com/", StringComparison.Ordinal))
-                    client.DefaultRequestHeaders.Add("api-key", ApiKey);
+            {
+                var azure = new AzureOpenAIClient(server, key);
+                client = azure.GetChatClient(Model);
+            }
             else
-                    client.DefaultRequestHeaders.Add("Authorization", $"Bearer {ApiKey}");
+            {
+                var openai = new OpenAIClient(key, new()
+                {
+                    Endpoint = server
+                });
+
+                client = openai.GetChatClient(Model);
             }
 
-            var req = new StringContent(JsonSerializer.Serialize(chat, JsonCodeGen.Default.OpenAIChatRequest), Encoding.UTF8, "application/json");
             try
             {
-                var task = client.PostAsync(Server, req, cancellation);
-                task.Wait(cancellation);
+                var updates = client.CompleteChatStreaming([
+                    new UserChatMessage(prompt),
+                    new UserChatMessage(question),
+                ], null, cancellation);
 
-                var rsp = task.Result;
-                var reader = rsp.Content.ReadAsStringAsync(cancellation);
-                reader.Wait(cancellation);
-
-                var body = reader.Result;
-                if (!rsp.IsSuccessStatusCode)
+                foreach (var update in updates)
                 {
-                    throw new Exception($"AI service returns error code {rsp.StatusCode}. Body: {body??string.Empty}");
+                    if (update.ContentUpdate.Count > 0)
+                        onUpdate.Invoke(update.ContentUpdate[0].Text);
                 }
-
-                return JsonSerializer.Deserialize(reader.Result, JsonCodeGen.Default.OpenAIChatResponse);
             }
             catch
             {
-                if (cancellation.IsCancellationRequested)
-                    return null;
-
+                if (!cancellation.IsCancellationRequested)
                     throw;
             }
         }

src/SourceGit.csproj

@@ -44,8 +44,10 @@
     <PackageReference Include="Avalonia.Diagnostics" Version="11.2.1" Condition="'$(Configuration)' == 'Debug'" />
     <PackageReference Include="Avalonia.AvaloniaEdit" Version="11.1.0" />
     <PackageReference Include="AvaloniaEdit.TextMate" Version="11.1.0" />
+    <PackageReference Include="Azure.AI.OpenAI" Version="2.0.0" />
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.3.2" />
     <PackageReference Include="LiveChartsCore.SkiaSharpView.Avalonia" Version="2.0.0-rc4.5" />
+    <PackageReference Include="OpenAI" Version="2.0.0" />
     <PackageReference Include="TextMateSharp" Version="1.0.64" />
     <PackageReference Include="TextMateSharp.Grammars" Version="1.0.64" />
   </ItemGroup>

src/Views/AIAssistant.axaml.cs

@@ -36,15 +36,17 @@ namespace SourceGit.Views
 
             Task.Run(() =>
             {
-                var message = new Commands.GenerateCommitMessage(_service, _repo, _changes, _cancel.Token, SetDescription).Result();
-                if (_cancel.IsCancellationRequested)
-                    return;
-
-                Dispatcher.UIThread.Invoke(() =>
+                new Commands.GenerateCommitMessage(_service, _repo, _changes, _cancel.Token, progress => 
                 {
-                    _onDone?.Invoke(message);
-                    Close();
-                });
+                    Dispatcher.UIThread.Invoke(() => ProgressMessage.Text = progress);
+                }, 
+                message =>
+                {
+                    Dispatcher.UIThread.Invoke(() => _onDone?.Invoke(message));
+                }).Exec();
+
+                if (!_cancel.IsCancellationRequested)
+                    Dispatcher.UIThread.Invoke(Close);
             }, _cancel.Token);
         }
 
@@ -54,11 +56,6 @@ namespace SourceGit.Views
             _cancel.Cancel();
         }
 
-        private void SetDescription(string message)
-        {
-            Dispatcher.UIThread.Invoke(() => ProgressMessage.Text = message);
-        }
-
         private Models.OpenAIService _service;
         private string _repo;
         private List<Models.Change> _changes;