fix: fix tool calls required omitempty field

Co-Authored-By: Minghan Zhang <112773885+zmh-program@users.noreply.github.com>

adapter/skylark/formatter.go

@@ -3,6 +3,7 @@ package skylark
 import (
 	"chat/globals"
 	"chat/utils"
+
 	structpb "github.com/golang/protobuf/ptypes/struct"
 	"github.com/volcengine/volc-sdk-golang/service/maas/models/api"
 )
@@ -20,19 +21,21 @@ func getFunctionCall(calls *globals.ToolCalls) *api.FunctionCall {
 }
 
 func getType(p globals.ToolProperty) string {
-	if p.Type == nil {
+	t, ok := p["type"]
+	if !ok {
 		return "string"
 	}
 
-	return *p.Type
+	return t.(string)
 }
 
 func getDescription(p globals.ToolProperty) string {
-	if p.Description == nil {
+	desc, ok := p["description"]
+	if !ok {
 		return ""
 	}
 
-	return *p.Description
+	return desc.(string)
 }
 
 func getValue(p globals.ToolProperty) *structpb.Value {

globals/tools.go

@@ -16,7 +16,7 @@ type ToolFunction struct {
 type ToolParameters struct {
 	Type       string         `json:"type"`
 	Properties ToolProperties `json:"properties"`
-	Required   []string       `json:"required"`
+	Required   *[]string      `json:"required,omitempty"`
 }
 
 type ToolProperties map[string]ToolProperty
@@ -25,7 +25,8 @@ type ToolProperties map[string]ToolProperty
 
 type JsonSchemaType any
 type JSONSchemaDefinition any
-type ToolProperty struct {
+type ToolProperty map[string]interface{}
+type DetailToolProperty struct {
 	Type  *string           `json:"type,omitempty"`
 	Enum  *[]JsonSchemaType `json:"enum,omitempty"`
 	Const *JsonSchemaType   `json:"const,omitempty"`

utils/tokenizer.go

@@ -83,6 +83,10 @@ func NumTokensFromMessages(messages []globals.Message, model string, responseTyp
 }
 
 func NumTokensFromResponse(response string, model string) int {
+	if len(response) == 0 {
+		return 0
+	}
+
 	return NumTokensFromMessages([]globals.Message{{Content: response}}, model, true)
 }