add settings in file handler

src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmModelSetting.cs

@@ -76,7 +76,6 @@ public class LlmModelSetting
 #region Embedding model settings
 public class EmbeddingSetting
 {
-    public bool IsDefault { get; set; }
     public int Dimension { get; set; }
 }
 #endregion
@@ -85,7 +84,6 @@ public class EmbeddingSetting
 #region Reasoning model settings
 public class ReasoningSetting
 {
-    public bool IsDefault { get; set; }
     public float Temperature { get; set; } = 1.0f;
     public string? EffortLevel { get; set; }
 }
@@ -102,21 +100,13 @@ public class WebSearchSetting
 #region Image model settings
 public class ImageSetting
 {
-    public ImageReadSetting? Reading { get; set; }
     public ImageGenerationSetting? Generation { get; set; }
     public ImageEditSetting? Edit { get; set; }
     public ImageVariationSetting? Variation { get; set; }
 }
 
-public class ImageReadSetting
-{
-    public bool IsDefault { get; set; }
-    public string? ImageDetailLevel { get; set; }
-}
-
 public class ImageGenerationSetting
 {
-    public bool IsDefault { get; set; }
     public ModelSettingBase? Style { get; set; }
     public ModelSettingBase? Size { get; set; }
     public ModelSettingBase? Quality { get; set; }
@@ -125,14 +115,12 @@ public class ImageGenerationSetting
 
 public class ImageEditSetting
 {
-    public bool IsDefault { get; set; }
     public ModelSettingBase? Size { get; set; }
     public ModelSettingBase? ResponseFormat { get; set; }
 }
 
 public class ImageVariationSetting
 {
-    public bool IsDefault { get; set; }
     public ModelSettingBase? Size { get; set; }
     public ModelSettingBase? ResponseFormat { get; set; }
 }

src/Plugins/BotSharp.Plugin.FileHandler/Functions/EditImageFn.cs

@@ -101,9 +101,18 @@ public class EditImageFn : IFunctionCallback
     {
         var state = _services.GetRequiredService<IConversationStateService>();
         var llmProviderService = _services.GetRequiredService<ILlmProviderService>();
+        var fileSettings = _services.GetRequiredService<FileHandlerSettings>();
 
         var provider = state.GetState("image_edit_llm_provider");
-        var model = state.GetState("image_edit_llm_model");
+        var model = state.GetState("image_edit_llm_provider");
+
+        if (!string.IsNullOrEmpty(provider) && !string.IsNullOrEmpty(model))
+        {
+            return (provider, model);
+        }
+
+        provider = fileSettings?.Image?.Edit?.LlmProvider;
+        model = fileSettings?.Image?.Edit?.LlmModel;
 
         if (!string.IsNullOrEmpty(provider) && !string.IsNullOrEmpty(model))
         {
@@ -113,11 +122,6 @@ public class EditImageFn : IFunctionCallback
         provider = "openai";
         model = "gpt-image-1";
 
-        var models = llmProviderService.GetProviderModels(provider);
-        var foundModel = models.FirstOrDefault(x => x.Image?.Edit?.IsDefault == true)
-                            ?? models.FirstOrDefault(x => x.Image?.Edit != null);
-
-        model = foundModel?.Name ?? model;
         return (provider, model);
     }
 

src/Plugins/BotSharp.Plugin.FileHandler/Functions/GenerateImageFn.cs

@@ -83,6 +83,7 @@ public class GenerateImageFn : IFunctionCallback
     {
         var state = _services.GetRequiredService<IConversationStateService>();
         var llmProviderService = _services.GetRequiredService<ILlmProviderService>();
+        var fileSettings = _services.GetRequiredService<FileHandlerSettings>();
 
         var provider = state.GetState("image_generate_llm_provider");
         var model = state.GetState("image_generate_llm_model");
@@ -92,14 +93,17 @@ public class GenerateImageFn : IFunctionCallback
             return (provider, model);
         }
 
+        provider = fileSettings?.Image?.Generation?.LlmProvider;
+        model = fileSettings?.Image?.Generation?.LlmModel;
+
+        if (!string.IsNullOrEmpty(provider) && !string.IsNullOrEmpty(model))
+        {
+            return (provider, model);
+        }
+
         provider = "openai";
         model = "gpt-image-1";
 
-        var models = llmProviderService.GetProviderModels(provider);
-        var foundModel = models.FirstOrDefault(x => x.Image?.Generation?.IsDefault == true)
-                            ?? models.FirstOrDefault(x => x.Image?.Generation != null);
-
-        model = foundModel?.Name ?? model;
         return (provider, model);
     }
 

src/Plugins/BotSharp.Plugin.FileHandler/Functions/ReadImageFn.cs

@@ -1,4 +1,3 @@
-using BotSharp.Abstraction.MLTasks.Settings;
 using BotSharp.Abstraction.Routing;
 
 namespace BotSharp.Plugin.FileHandler.Functions;
@@ -100,6 +99,7 @@ public class ReadImageFn : IFunctionCallback
         try
         {
             var (provider, model) = GetLlmProviderModel();
+            SetImageDetailLevel();
             var completion = CompletionProvider.GetChatCompletion(_services, provider: provider, model: model);
             var response = await completion.GetChatCompletions(agent, dialogs);
             return response.Content;
@@ -116,6 +116,7 @@ public class ReadImageFn : IFunctionCallback
     {
         var state = _services.GetRequiredService<IConversationStateService>();
         var llmProviderService = _services.GetRequiredService<ILlmProviderService>();
+        var fileSettings = _services.GetRequiredService<FileHandlerSettings>();
 
         var provider = state.GetState("image_read_llm_provider");
         var model = state.GetState("image_read_llm_model");
@@ -125,14 +126,31 @@ public class ReadImageFn : IFunctionCallback
             return (provider, model);
         }
 
+        provider = fileSettings?.Image?.Reading?.LlmProvider;
+        model = fileSettings?.Image?.Reading?.LlmModel;
+
+        if (!string.IsNullOrEmpty(provider) && !string.IsNullOrEmpty(model))
+        {
+            return (provider, model);
+        }
+
         provider = "openai";
         model = "gpt-5-mini";
 
-        var models = llmProviderService.GetProviderModels(provider);
-        var foundModel = models.FirstOrDefault(x => x.Image?.Reading?.IsDefault == true)
-                            ?? models.FirstOrDefault(x => x.Image?.Reading != null);
-
-        model = foundModel?.Name ?? model;
         return (provider, model);
     }
+
+    private void SetImageDetailLevel()
+    {
+        var state = _services.GetRequiredService<IConversationStateService>();
+        var fileSettings = _services.GetRequiredService<FileHandlerSettings>();
+
+        var key = "chat_image_detail_level";
+        var level = state.GetState(key);
+
+        if (string.IsNullOrWhiteSpace(level) && !string.IsNullOrWhiteSpace(fileSettings.Image?.Reading?.ImageDetailLevel))
+        {
+            state.SetState(key, fileSettings.Image.Reading.ImageDetailLevel);
+        }
+    }
 }

src/Plugins/BotSharp.Plugin.FileHandler/Functions/ReadPdfFn.cs

@@ -90,6 +90,7 @@ public class ReadPdfFn : IFunctionCallback
         try
         {
             var (provider, model) = GetLlmProviderModel();
+            SetImageDetailLevel();
             var completion = CompletionProvider.GetChatCompletion(_services, provider: provider, model: model);
             var response = await completion.GetChatCompletions(agent, dialogs);
             return response.Content;
@@ -106,9 +107,18 @@ public class ReadPdfFn : IFunctionCallback
     {
         var state = _services.GetRequiredService<IConversationStateService>();
         var llmProviderService = _services.GetRequiredService<ILlmProviderService>();
+        var fileSettings = _services.GetRequiredService<FileHandlerSettings>();
 
-        var provider = state.GetState("image_read_llm_provider");
+        var provider = state.GetState("pdf_read_llm_provider");
-        var model = state.GetState("image_read_llm_model");
+        var model = state.GetState("pdf_read_llm_model");
+
+        if (!string.IsNullOrEmpty(provider) && !string.IsNullOrEmpty(model))
+        {
+            return (provider, model);
+        }
+
+        provider = fileSettings?.Image?.Reading?.LlmProvider;
+        model = fileSettings?.Image?.Reading?.LlmModel;
 
         if (!string.IsNullOrEmpty(provider) && !string.IsNullOrEmpty(model))
         {
@@ -118,11 +128,20 @@ public class ReadPdfFn : IFunctionCallback
         provider = "openai";
         model = "gpt-5-mini";
 
-        var models = llmProviderService.GetProviderModels(provider);
-        var foundModel = models.FirstOrDefault(x => x.Image?.Reading?.IsDefault == true)
-                            ?? models.FirstOrDefault(x => x.Image?.Reading != null);
-
-        model = foundModel?.Name ?? model;
         return (provider, model);
     }
+
+    private void SetImageDetailLevel()
+    {
+        var state = _services.GetRequiredService<IConversationStateService>();
+        var fileSettings = _services.GetRequiredService<FileHandlerSettings>();
+
+        var key = "chat_image_detail_level";
+        var level = state.GetState(key);
+
+        if (string.IsNullOrWhiteSpace(level) && !string.IsNullOrWhiteSpace(fileSettings.Pdf?.Reading?.ImageDetailLevel))
+        {
+            state.SetState(key, fileSettings.Pdf.Reading.ImageDetailLevel);
+        }
+    }
 }

src/Plugins/BotSharp.Plugin.FileHandler/Settings/FileHandlerSettings.cs

@@ -2,4 +2,55 @@ namespace BotSharp.Plugin.FileHandler.Settings;
 
 public class FileHandlerSettings
 {
+    public ImageSettings? Image { get; set; }
+    public PdfSettings? Pdf { get; set; }
+}
+
+#region Image
+public class ImageSettings
+{
+    public ImageReadSettings? Reading { get; set; }
+    public ImageGenerationSettings? Generation { get; set; }
+    public ImageEditSettings? Edit { get; set; }
+    public ImageVariationSettings? Variation { get; set; }
+}
+
+public class ImageReadSettings : FileLlmSettingBase
+{
+    public string? ImageDetailLevel { get; set; }
+}
+
+public class ImageGenerationSettings : FileLlmSettingBase
+{
+
+}
+
+public class ImageEditSettings : FileLlmSettingBase
+{
+
+}
+
+public class ImageVariationSettings : FileLlmSettingBase
+{
+
+}
+#endregion
+
+#region Pdf
+public class PdfSettings
+{
+    public PdfReadSettings? Reading { get; set; }
+}
+
+public class PdfReadSettings : FileLlmSettingBase
+{
+    public bool ConvertToImage { get; set; }
+    public string? ImageDetailLevel { get; set; }
+}
+#endregion
+
+public class FileLlmSettingBase
+{
+    public string? LlmProvider { get; set; }
+    public string? LlmModel { get; set; }
 }

src/Plugins/BotSharp.Plugin.OpenAI/Providers/Chat/ChatCompletionProvider.cs

@@ -372,7 +372,7 @@ public class ChatCompletionProvider : IChatCompletion
             filteredMessages = filteredMessages.Where((_, idx) => idx >= firstUserMsgIdx).ToList();
         }
 
-        var imageDetailLevel = GetChatImageDetailLevel(state.GetState("chat_image_detail_level"));
+        var imageDetailLevel = ParseChatImageDetailLevel(state.GetState("chat_image_detail_level"));
         foreach (var message in filteredMessages)
         {
             if (message.Role == AgentRole.Function)
@@ -508,8 +508,8 @@ public class ChatCompletionProvider : IChatCompletion
         {
             temperature = settings.Reasoning.Temperature;
             var level = state.GetState("reasoning_effort_level")
-                         .IfNullOrEmptyAs(agent?.LlmConfig?.ReasoningEffortLevel ?? string.Empty)
+                         .IfNullOrEmptyAs(agent?.LlmConfig?.ReasoningEffortLevel)
-                         .IfNullOrEmptyAs(settings?.Reasoning?.EffortLevel ?? string.Empty);
+                         .IfNullOrEmptyAs(settings?.Reasoning?.EffortLevel);
             reasoningEffortLevel = ParseReasoningEffortLevel(level);
         }
 
@@ -561,13 +561,7 @@ public class ChatCompletionProvider : IChatCompletion
         return effortLevel;
     }
 
-
+    private ChatImageDetailLevel ParseChatImageDetailLevel(string? level)
-    private ChatImageDetailLevel GetChatImageDetailLevel(string level)
-    {
-        return ParseChatImageDetailLevel(level);
-    }
-
-    private ChatImageDetailLevel ParseChatImageDetailLevel(string level)
     {
         if (string.IsNullOrWhiteSpace(level))
         {

src/WebStarter/appsettings.json

@@ -438,6 +438,36 @@
     }
   },
 
+  "FileHandler": {
+    "Image": {
+      "Reading": {
+        "LlmProvider": "openai",
+        "LlmModel": "gpt-5-mini",
+        "ImageDetailLevel": "auto"
+      },
+      "Generation": {
+        "LlmProvider": "openai",
+        "LlmModel": "dall-e-3"
+      },
+      "Edit": {
+        "LlmProvider": "openai",
+        "LlmModel": "dall-e-2"
+      },
+      "Variation": {
+        "LlmProvider": "",
+        "LlmModel": ""
+      }
+    },
+    "Pdf": {
+      "Reading": {
+        "LlmProvider": "openai",
+        "LlmModel": "gpt-5-mini",
+        "ConvertToImage": true,
+        "ImageDetailLevel": "auto"
+      }
+    }
+  },
+
   "TencentCos": {
     "AppId": "",
     "SecretId": "",