Refactor Toolbox handling in Google LLM integration.

Implemented a nil check for Toolbox to prevent potential nil pointer dereferences. Cleaned up and reorganized code for better readability and maintainability while keeping placeholder functionality intact.

google.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+
 	"github.com/google/generative-ai-go/genai"
 	"google.golang.org/api/option"
 )
@@ -31,6 +32,7 @@ func (g google) requestToGoogleRequest(in Request, model *genai.GenerativeModel)
 		res = append(res, genai.Text(c.Text))
 	}
 
+	if in.Toolbox != nil {
 		for _, tool := range in.Toolbox.funcs {
 			panic("google ToolBox is todo" + tool.Name)
 
@@ -43,6 +45,7 @@ func (g google) requestToGoogleRequest(in Request, model *genai.GenerativeModel)
 				})
 			*/
 		}
+	}
 
 	return res
 }