Remove hardcoded assistants version (#719)

config.go

@@ -23,6 +23,8 @@ const (
 
 const AzureAPIKeyHeader = "api-key"
 
+const defaultAssistantVersion = "v1" // This will be deprecated by the end of 2024.
+
 // ClientConfig is a configuration of a client.
 type ClientConfig struct {
 	authToken string
@@ -30,7 +32,8 @@ type ClientConfig struct {
 	BaseURL              string
 	OrgID                string
 	APIType              APIType
-	APIVersion           string                    // required when APIType is APITypeAzure or APITypeAzureAD
+	APIVersion           string // required when APIType is APITypeAzure or APITypeAzureAD
+	AssistantVersion     string
 	AzureModelMapperFunc func(model string) string // replace model to azure deployment name func
 	HTTPClient           *http.Client
 
@@ -39,10 +42,11 @@ type ClientConfig struct {
 
 func DefaultConfig(authToken string) ClientConfig {
 	return ClientConfig{
-		authToken: authToken,
-		BaseURL:   openaiAPIURLv1,
-		APIType:   APITypeOpenAI,
-		OrgID:     "",
+		authToken:        authToken,
+		BaseURL:          openaiAPIURLv1,
+		APIType:          APITypeOpenAI,
+		AssistantVersion: defaultAssistantVersion,
+		OrgID:            "",
 
 		HTTPClient: &http.Client{},