openai: make tool call conversion fns public

openai/openai.go

@@ -235,7 +235,8 @@ func toolCallId() string {
 	return "call_" + strings.ToLower(string(b))
 }
 
-func toToolCalls(tc []api.ToolCall) []ToolCall {
+// ToToolCalls converts api.ToolCall to OpenAI ToolCall format
+func ToToolCalls(tc []api.ToolCall) []ToolCall {
 	toolCalls := make([]ToolCall, len(tc))
 	for i, tc := range tc {
 		toolCalls[i].ID = toolCallId()
@@ -256,7 +257,7 @@ func toToolCalls(tc []api.ToolCall) []ToolCall {
 
 // ToChatCompletion converts an api.ChatResponse to ChatCompletion
 func ToChatCompletion(id string, r api.ChatResponse) ChatCompletion {
-	toolCalls := toToolCalls(r.Message.ToolCalls)
+	toolCalls := ToToolCalls(r.Message.ToolCalls)
 	return ChatCompletion{
 		Id:                id,
 		Object:            "chat.completion",
@@ -282,7 +283,7 @@ func ToChatCompletion(id string, r api.ChatResponse) ChatCompletion {
 
 // ToChunk converts an api.ChatResponse to ChatCompletionChunk
 func ToChunk(id string, r api.ChatResponse, toolCallSent bool) ChatCompletionChunk {
-	toolCalls := toToolCalls(r.Message.ToolCalls)
+	toolCalls := ToToolCalls(r.Message.ToolCalls)
 	return ChatCompletionChunk{
 		Id:                id,
 		Object:            "chat.completion.chunk",
@@ -424,7 +425,7 @@ func FromChatRequest(r ChatCompletionRequest) (*api.ChatRequest, error) {
 		}
 		switch content := msg.Content.(type) {
 		case string:
-			toolCalls, err := fromCompletionToolCall(msg.ToolCalls)
+			toolCalls, err := FromCompletionToolCall(msg.ToolCalls)
 			if err != nil {
 				return nil, err
 			}
@@ -487,7 +488,7 @@ func FromChatRequest(r ChatCompletionRequest) (*api.ChatRequest, error) {
 			// since we might have added multiple messages above, if we have tools
 			// calls we'll add them to the last message
 			if len(messages) > 0 && len(msg.ToolCalls) > 0 {
-				toolCalls, err := fromCompletionToolCall(msg.ToolCalls)
+				toolCalls, err := FromCompletionToolCall(msg.ToolCalls)
 				if err != nil {
 					return nil, err
 				}
@@ -618,7 +619,8 @@ func nameFromToolCallID(messages []Message, toolCallID string) string {
 	return ""
 }
 
-func fromCompletionToolCall(toolCalls []ToolCall) ([]api.ToolCall, error) {
+// FromCompletionToolCall converts OpenAI ToolCall format to api.ToolCall
+func FromCompletionToolCall(toolCalls []ToolCall) ([]api.ToolCall, error) {
 	apiToolCalls := make([]api.ToolCall, len(toolCalls))
 	for i, tc := range toolCalls {
 		apiToolCalls[i].Function.Name = tc.Function.Name