add memory

Services/Tools/ToolRegistry.cs

@@ -0,0 +1,55 @@
+using System.Text.Json;
+
+namespace TentacleBot.Services.Tools;
+
+public class ToolRegistry
+{
+    private readonly Dictionary<string, ToolDefinition> _tools = new();
+
+    public void Register(string name, string description, Dictionary<string, object> parameters, Func<string, Task<string>> handler)
+    {
+        _tools[name] = new ToolDefinition(name, description, parameters, handler);
+    }
+
+    public List<object> BuildToolDefinitions()
+    {
+        return _tools.Values.Select(t =>
+        {
+            var functionDef = new Dictionary<string, object>
+            {
+                ["name"] = t.Name,
+                ["description"] = t.Description,
+                ["parameters"] = t.Parameters
+            };
+
+            return (object)new Dictionary<string, object>
+            {
+                ["type"] = "function",
+                ["function"] = functionDef
+            };
+        }).ToList();
+    }
+
+    public async Task<string> ExecuteAsync(string toolName, string argumentsJson)
+    {
+        if (!_tools.TryGetValue(toolName, out var tool))
+            return "Error: unknown tool";
+
+        try
+        {
+            return await tool.Handler(argumentsJson);
+        }
+        catch (Exception ex)
+        {
+            return $"Error executing tool '{toolName}': {ex.Message}";
+        }
+    }
+
+    public bool HasTool(string name) => _tools.ContainsKey(name);
+
+    private record ToolDefinition(
+        string Name,
+        string Description,
+        Dictionary<string, object> Parameters,
+        Func<string, Task<string>> Handler);
+}