Redefine IFunctionCallback.Execute.

src/Infrastructure/BotSharp.Abstraction/Conversations/IConversationService.cs

@@ -1,4 +1,5 @@
 using BotSharp.Abstraction.Conversations.Models;
+using BotSharp.Abstraction.MLTasks;
 
 namespace BotSharp.Abstraction.Conversations;
 
@@ -8,8 +9,39 @@ public interface IConversationService
     Task<Conversation> GetConversation(string id);
     Task<List<Conversation>> GetConversations();
     Task DeleteConversation(string id);
-    Task<bool> SendMessage(string agentId, string conversationId, RoleDialogModel lastDalog, Func<RoleDialogModel, Task> onMessageReceived, Func<RoleDialogModel, Task> onFunctionExecuting);
-    Task<bool> SendMessage(string agentId, string conversationId, List<RoleDialogModel> wholeDialogs, Func<RoleDialogModel, Task> onMessageReceived);
+
+    IChatCompletion GetChatCompletion();
+
+    /// <summary>
+    /// Send message to LLM
+    /// </summary>
+    /// <param name="agentId"></param>
+    /// <param name="conversationId"></param>
+    /// <param name="lastDalog"></param>
+    /// <param name="onMessageReceived"></param>
+    /// <param name="onFunctionExecuting">This delegate is useful when you want to report progress on UI</param>
+    /// <returns></returns>
+    Task<bool> SendMessage(string agentId, 
+        string conversationId, 
+        RoleDialogModel lastDalog, 
+        Func<RoleDialogModel, Task> onMessageReceived, 
+        Func<RoleDialogModel, Task> onFunctionExecuting);
+
+    /// <summary>
+    /// Send message to LLM if frontend passed over the dialog history
+    /// </summary>
+    /// <param name="agentId"></param>
+    /// <param name="conversationId"></param>
+    /// <param name="wholeDialogs"></param>
+    /// <param name="onMessageReceived"></param>
+    /// <param name="onFunctionExecuting">This delegate is useful when you want to report progress on UI</param>
+    /// <returns></returns>
+    Task<bool> SendMessage(string agentId, 
+        string conversationId, 
+        List<RoleDialogModel> wholeDialogs, 
+        Func<RoleDialogModel, Task> onMessageReceived,
+        Func<RoleDialogModel, Task> onFunctionExecuting);
+
     List<RoleDialogModel> GetDialogHistory(string conversationId, int lastCount = 20);
     Task CleanHistory(string agentId);
 }

src/Infrastructure/BotSharp.Abstraction/Functions/IFunctionCallback.cs

@@ -1,7 +1,9 @@
+using BotSharp.Abstraction.Conversations.Models;
+
 namespace BotSharp.Abstraction.Functions;
 
 public interface IFunctionCallback
 {
     string Name { get; }
-    Task<string> Execute(string args);
+    Task<bool> Execute(RoleDialogModel message);
 }

src/Infrastructure/BotSharp.Core/Conversations/ConversationController.cs

@@ -48,13 +48,12 @@ public class ConversationController : ControllerBase, IApiAdapter
 
         var response = new MessageResponseModel();
 
-        await conv.SendMessage(agentId, conversationId, new RoleDialogModel("user", input.Text), async msg =>
-        {
-            response.Text += msg.Content;
-        }, async fn =>
-        {
-
-        });
+        await conv.SendMessage(agentId, conversationId,
+            new RoleDialogModel("user", input.Text),
+            async msg =>
+                response.Text += msg.Content, 
+            async fn
+                => await Task.CompletedTask);
 
         return response;
     }

src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationService.cs

@@ -1,11 +1,7 @@
 using BotSharp.Abstraction.Agents.Enums;
-using BotSharp.Abstraction.Conversations;
 using BotSharp.Abstraction.Conversations.Models;
 using BotSharp.Abstraction.Functions;
-using BotSharp.Abstraction.Knowledges.Models;
 using BotSharp.Abstraction.MLTasks;
-using Microsoft.Extensions.Logging;
-using System.Text.Json;
 
 namespace BotSharp.Core.Conversations.Services;
 
@@ -74,7 +70,8 @@ public class ConversationService : IConversationService
         return record.ToConversation();
     }
 
-    public async Task<bool> SendMessage(string agentId, string conversationId, RoleDialogModel lastDalog, 
+    public async Task<bool> SendMessage(string agentId, string conversationId, 
+        RoleDialogModel lastDalog, 
         Func<RoleDialogModel, Task> onMessageReceived, 
         Func<RoleDialogModel, Task> onFunctionExecuting)
     {
@@ -82,41 +79,17 @@ public class ConversationService : IConversationService
 
         var wholeDialogs = GetDialogHistory(conversationId);
 
-        var response = await SendMessage(agentId, conversationId, wholeDialogs, async msg =>
-        {
-            if (msg.Role == "function")
-            {
-                // Invoke functions
-                var functions = _services.GetServices<IFunctionCallback>().Where(x => x.Name == msg.FunctionName);
-                foreach (var fn in functions)
-                {
-                    await onFunctionExecuting(msg);
-
-                    msg.ExecutionResult = await fn.Execute(msg.Content);
-
-                    var result = msg.ExecutionResult.Replace("\r", " ").Replace("\n", " ");
-                    var content = $"{result}";
-                    // Console.WriteLine($"{msg.Role}: {content}");
-                    _storage.Append(conversationId, new RoleDialogModel(msg.Role, content)
-                    {
-                        FunctionName = msg.FunctionName,
-                    });
-                }
-            }
-            else
-            {
-                var content = msg.Content.Replace("\r", " ").Replace("\n", " ");
-                // Console.WriteLine($"{msg.Role}: {content}");
-                _storage.Append(conversationId, new RoleDialogModel(msg.Role, content));
-                
-                await onMessageReceived(msg);
-            }
-        });
+        var response = await SendMessage(agentId, conversationId, wholeDialogs, 
+            onMessageReceived: onMessageReceived, 
+            onFunctionExecuting: onFunctionExecuting);
 
         return response;
     }
 
-    public async Task<bool> SendMessage(string agentId, string conversationId, List<RoleDialogModel> wholeDialogs, Func<RoleDialogModel, Task> onMessageReceived)
+    public async Task<bool> SendMessage(string agentId, string conversationId, 
+        List<RoleDialogModel> wholeDialogs, 
+        Func<RoleDialogModel, Task> onMessageReceived,
+        Func<RoleDialogModel, Task> onFunctionExecuting)
     {        
         var converation = await GetConversation(conversationId);
 
@@ -152,8 +125,6 @@ public class ConversationService : IConversationService
             });
         }*/
 
-        var chatCompletion = GetChatCompletion();
-
         var hooks = _services.GetServices<IConversationHook>().ToList();
 
         // Before chat completion hook
@@ -166,48 +137,83 @@ public class ConversationService : IConversationService
             await hook.BeforeCompletion();
         }
 
+        var chatCompletion = GetChatCompletion();
         var result = await chatCompletion.GetChatCompletionsAsync(agent, wholeDialogs, async msg =>
         {
             if (msg.Role == "function")
             {
-                // Before executing functions
-                foreach (var hook in hooks)
-                {
-                    await hook.OnFunctionExecuting(msg);
-                }
                 // Save states
-                var jo = JsonSerializer.Deserialize<object>(msg.Content);
-                if (jo is JsonElement root)
-                {
-                    foreach (JsonProperty property in root.EnumerateObject())
-                    {
-                        stateService.SetState(property.Name, property.Value.ToString());
-                    }
-                }
+                SaveStateByArgs(msg.Content);
+
+                // Call functions
+                await onFunctionExecuting(msg);
+                await CallFunctions(conversationId, msg);
             }
             else
             {
+                // Add to dialog history
+                _storage.Append(conversationId, new RoleDialogModel(msg.Role, msg.Content));
+
                 // After chat completion hook
                 foreach (var hook in hooks)
                 {
                     await hook.AfterCompletion(msg);
                 }
-            }
-            await onMessageReceived(msg);
 
-            if (msg.Role == AgentRole.Function)
-            {
-                // After functions have been executed
-                foreach (var hook in hooks)
-                {
-                    await hook.OnFunctionExecuted(msg);
-                }
+                await onMessageReceived(msg);
             }
         });
 
         return result;
     }
 
+    private void SaveStateByArgs(string args)
+    {
+        var stateService = _services.GetRequiredService<IConversationStateService>();
+        var jo = JsonSerializer.Deserialize<object>(args);
+        if (jo is JsonElement root)
+        {
+            foreach (JsonProperty property in root.EnumerateObject())
+            {
+                stateService.SetState(property.Name, property.Value.ToString());
+            }
+        }
+    }
+
+    private async Task CallFunctions(string conversationId, RoleDialogModel msg)
+    {
+        var hooks = _services.GetServices<IConversationHook>().ToList();
+
+        // Invoke functions
+        var functions = _services.GetServices<IFunctionCallback>()
+            .Where(x => x.Name == msg.FunctionName)
+            .ToList();
+
+        foreach (var fn in functions)
+        {
+            // Before executing functions
+            foreach (var hook in hooks)
+            {
+                await hook.OnFunctionExecuting(msg);
+            }
+
+            // Execute function
+            await fn.Execute(msg);
+
+            // Add to dialog history
+            _storage.Append(conversationId, new RoleDialogModel(msg.Role, msg.ExecutionResult)
+            {
+                FunctionName = msg.FunctionName,
+            });
+
+            // After functions have been executed
+            foreach (var hook in hooks)
+            {
+                await hook.OnFunctionExecuted(msg);
+            }
+        }
+    }
+
     public IChatCompletion GetChatCompletion()
     {
         var completions = _services.GetServices<IChatCompletion>();
@@ -222,6 +228,8 @@ public class ConversationService : IConversationService
     public List<RoleDialogModel> GetDialogHistory(string conversationId, int lastCount = 20)
     {
         var dialogs = _storage.GetDialogs(conversationId);
-        return dialogs.TakeLast(lastCount).ToList();
+        return dialogs
+            .Where(x => x.CreatedAt > DateTime.UtcNow.AddHours(-8))
+            .TakeLast(lastCount).ToList();
     }
 }

src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs

@@ -34,7 +34,7 @@ public class ConversationStateService : IConversationStateService, IDisposable
         {
             var currentValue = value;
             _state[name] = currentValue;
-            _logger.LogInformation($"Set state: {name} - {value}");
+            _logger.LogInformation($"Set state: {name} = {value}");
             foreach (var hook in hooks)
             {
                 hook.OnStateChanged(name, preValue, currentValue).Wait();

src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStorage.cs

@@ -5,11 +5,9 @@ namespace BotSharp.Core.Conversations.Services;
 
 public class ConversationStorage : IConversationStorage
 {
-    private readonly IAgentService _agent;
     private readonly MyDatabaseSettings _dbSettings;
-    public ConversationStorage(IAgentService agent, MyDatabaseSettings dbSettings)
+    public ConversationStorage(MyDatabaseSettings dbSettings)
     {
-        _agent = agent;
         _dbSettings = dbSettings;
     }
 
@@ -18,7 +16,15 @@ public class ConversationStorage : IConversationStorage
         var conversationFile = GetStorageFile(conversationId);
         var sb = new StringBuilder();
         sb.AppendLine($"{dialog.Role}|{dialog.CreatedAt}|{dialog.FunctionName}");
-        sb.AppendLine($"  - {dialog.Content}");
+
+        var content = dialog.Content.Trim().Replace("\r", " ").Replace("\n", " ");
+        if (string.IsNullOrEmpty(content))
+        {
+            return;
+        }
+
+        sb.AppendLine($"  - {content}");
+
         var conversation = sb.ToString();
         File.AppendAllText(conversationFile, conversation);
     }

src/Infrastructure/BotSharp.Core/Using.cs

@@ -3,9 +3,11 @@ global using System.Collections.Generic;
 global using System.Text;
 global using System.Threading.Tasks;
 global using System.Linq;
+global using System.Text.Json;
 global using Microsoft.Extensions.DependencyInjection;
-global using BotSharp.Abstraction.Plugins;
+global using Microsoft.Extensions.Logging;
 global using EntityFrameworkCore.BootKit;
+global using BotSharp.Abstraction.Plugins;
 global using BotSharp.Abstraction.Agents;
 global using BotSharp.Abstraction.Conversations;
 global using BotSharp.Abstraction.Knowledges;

src/Plugins/BotSharp.Plugin.ChatbotUI/ChatbotUiController.cs

@@ -70,7 +70,9 @@ public class ChatbotUiController : ControllerBase, IApiAdapter
             input.ConversationId, 
             conversations, 
             async msg => 
-                await OnChunkReceived(outputStream, msg));
+                await OnChunkReceived(outputStream, msg),
+            async fn 
+                => await Task.CompletedTask);
 
         await OnEventCompleted(outputStream);
     }