Merge pull request #2558 from seefs001/fix/gemini-tool-call

fix: gemini request -> openai tool call

dto/gemini.go

@@ -126,7 +126,7 @@ func (r *GeminiChatRequest) SetModelName(modelName string) {
 
 func (r *GeminiChatRequest) GetTools() []GeminiChatTool {
 	var tools []GeminiChatTool
-	if strings.HasSuffix(string(r.Tools), "[") {
+	if strings.HasPrefix(string(r.Tools), "[") {
 		// is array
 		if err := common.Unmarshal(r.Tools, &tools); err != nil {
 			logger.LogError(nil, "error_unmarshalling_tools: "+err.Error())

service/convert.go

@@ -674,9 +674,11 @@ func GeminiToOpenAIRequest(geminiRequest *dto.GeminiChatRequest, info *relaycomm
 		var tools []dto.ToolCallRequest
 		for _, tool := range geminiRequest.GetTools() {
 			if tool.FunctionDeclarations != nil {
-				// 将 Gemini 的 FunctionDeclarations 转换为 OpenAI 的 ToolCallRequest
-				functionDeclarations, ok := tool.FunctionDeclarations.([]dto.FunctionRequest)
-				if ok {
+				functionDeclarations, err := common.Any2Type[[]dto.FunctionRequest](tool.FunctionDeclarations)
+				if err != nil {
+					common.SysError(fmt.Sprintf("failed to parse gemini function declarations: %v (type=%T)", err, tool.FunctionDeclarations))
+					continue
+				}
 				for _, function := range functionDeclarations {
 					openAITool := dto.ToolCallRequest{
 						Type: "function",
@@ -690,7 +692,6 @@ func GeminiToOpenAIRequest(geminiRequest *dto.GeminiChatRequest, info *relaycomm
 				}
 			}
 		}
-		}
 		if len(tools) > 0 {
 			openaiRequest.Tools = tools
 		}