feature: support to customize reasoning_effort for AI chat (#2609)

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

Author: love-linger

src/AI/Agent.cs

@@ -21,6 +21,11 @@ public async Task GenerateCommitMessageAsync(string repo, string currentBranch,
                 throw new Exception("Failed to fetch available models from this service. Please check your configuration and try again.");
 
             var options = new ChatCompletionOptions() { Tools = { ChatTools.GetDetailChangesInFile } };
+#pragma warning disable OPENAI001
+            if (!_service.ReasoningEffortLevel.Equals(Options.IgnoredReasoningEffortLevel, StringComparison.OrdinalIgnoreCase))
+                options.ReasoningEffortLevel = new ChatReasoningEffortLevel(_service.ReasoningEffortLevel);
+#pragma warning restore OPENAI001
+
             var userMessageBuilder = new StringBuilder();
             userMessageBuilder
                 .AppendLine("Generate a commit message (follow the rule of conventional commit message) for given git repository.")

src/AI/Options.cs

@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+
+namespace SourceGit.AI
+{
+    public static class Options
+    {
+        public static readonly string IgnoredReasoningEffortLevel = "unspecified";
+        public static readonly List<string> ReasoningEffortLevels = [
+            IgnoredReasoningEffortLevel,
+            "none",
+            "minimal",
+            "low",
+            "medium",
+            "high",
+        ];
+    }
+}

src/AI/Service.cs

@@ -54,6 +54,12 @@ public bool AutoFetchAvailableModels
             set => SetProperty(ref _autoFetchAvailableModels, value);
         }
 
+        public string ReasoningEffortLevel
+        {
+            get => _reasoningEffortLevel;
+            set => SetProperty(ref _reasoningEffortLevel, value);
+        }
+
         public string AdditionalPrompt
         {
             get;
@@ -93,6 +99,7 @@ private OpenAIClient GetOpenAIClient()
 
         private string _name = string.Empty;
         private string _model = string.Empty;
+        private string _reasoningEffortLevel = Options.IgnoredReasoningEffortLevel;
         private bool _autoFetchAvailableModels = true;
     }
 }

src/Resources/Locales/en_US.axaml

@@ -661,6 +661,7 @@
   <x:String x:Key="Text.Preferences.AI.Model.AutoFetchAvailableModels" xml:space="preserve">Fetch available model-ids automatically</x:String>
   <x:String x:Key="Text.Preferences.AI.Name" xml:space="preserve">Name</x:String>
   <x:String x:Key="Text.Preferences.AI.ReadApiKeyFromEnv" xml:space="preserve">Entered value is the name to load API key from ENV</x:String>
+  <x:String x:Key="Text.Preferences.AI.ReasoningEffortLevel" xml:space="preserve">Reasoning Effort Level</x:String>
   <x:String x:Key="Text.Preferences.AI.Server" xml:space="preserve">Server</x:String>
   <x:String x:Key="Text.Preferences.Appearance" xml:space="preserve">APPEARANCE</x:String>
   <x:String x:Key="Text.Preferences.Appearance.DefaultFont" xml:space="preserve">Default Font</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -665,6 +665,7 @@
   <x:String x:Key="Text.Preferences.AI.Model.AutoFetchAvailableModels" xml:space="preserve">自动拉取可用模型列表</x:String>
   <x:String x:Key="Text.Preferences.AI.Name" xml:space="preserve">配置名称</x:String>
   <x:String x:Key="Text.Preferences.AI.ReadApiKeyFromEnv" xml:space="preserve">从环境变量（填写环境变量名）中读取API密钥</x:String>
+  <x:String x:Key="Text.Preferences.AI.ReasoningEffortLevel" xml:space="preserve">推理努力等级</x:String>
   <x:String x:Key="Text.Preferences.AI.Server" xml:space="preserve">服务地址</x:String>
   <x:String x:Key="Text.Preferences.Appearance" xml:space="preserve">外观配置</x:String>
   <x:String x:Key="Text.Preferences.Appearance.DefaultFont" xml:space="preserve">缺省字体</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -665,6 +665,7 @@
   <x:String x:Key="Text.Preferences.AI.Model.AutoFetchAvailableModels" xml:space="preserve">自動取得可用的模型列表</x:String>
   <x:String x:Key="Text.Preferences.AI.Name" xml:space="preserve">名稱</x:String>
   <x:String x:Key="Text.Preferences.AI.ReadApiKeyFromEnv" xml:space="preserve">從環境變數中 (輸入環境變數名稱) 讀取 API 金鑰</x:String>
+  <x:String x:Key="Text.Preferences.AI.ReasoningEffortLevel" xml:space="preserve">推理努力等級</x:String>
   <x:String x:Key="Text.Preferences.AI.Server" xml:space="preserve">伺服器</x:String>
   <x:String x:Key="Text.Preferences.Appearance" xml:space="preserve">外觀設定</x:String>
   <x:String x:Key="Text.Preferences.Appearance.DefaultFont" xml:space="preserve">預設字型</x:String>

src/Views/Preferences.axaml

@@ -917,6 +917,13 @@
                               Content="{DynamicResource Text.Preferences.AI.Model.AutoFetchAvailableModels}"
                               IsChecked="{Binding AutoFetchAvailableModels, Mode=TwoWay}"/>
 
+                    <TextBlock Margin="0,8,0,0" Text="{DynamicResource Text.Preferences.AI.ReasoningEffortLevel}"/>
+                    <ComboBox Margin="0,4,0,0"
+                              Height="28"
+                              HorizontalAlignment="Stretch"
+                              ItemsSource="{Binding Source={x:Static ai:Options.ReasoningEffortLevels}}"
+                              SelectedItem="{Binding ReasoningEffortLevel, Mode=TwoWay}"/>
+
                     <TextBlock Margin="0,12,0,0" Text="{DynamicResource Text.Preferences.AI.AdditionalPrompt}"/>
                     <TextBox Height="120"
                              Margin="0,4,0,0"