refactor(dto): change function and encoding fields to use json.RawMessage for improved flexibility

dto/openai_request.go

@@ -37,11 +37,11 @@ type GeneralOpenAIRequest struct {
 	Input               any               `json:"input,omitempty"`
 	Instruction         string            `json:"instruction,omitempty"`
 	Size                string            `json:"size,omitempty"`
-	Functions           any               `json:"functions,omitempty"`
+	Functions           json.RawMessage   `json:"functions,omitempty"`
 	FrequencyPenalty    float64           `json:"frequency_penalty,omitempty"`
 	PresencePenalty     float64           `json:"presence_penalty,omitempty"`
 	ResponseFormat      *ResponseFormat   `json:"response_format,omitempty"`
-	EncodingFormat      any               `json:"encoding_format,omitempty"`
+	EncodingFormat      json.RawMessage   `json:"encoding_format,omitempty"`
 	Seed                float64           `json:"seed,omitempty"`
 	ParallelTooCalls    *bool             `json:"parallel_tool_calls,omitempty"`
 	Tools               []ToolCallRequest `json:"tools,omitempty"`
@@ -50,10 +50,10 @@ type GeneralOpenAIRequest struct {
 	LogProbs            bool              `json:"logprobs,omitempty"`
 	TopLogProbs         int               `json:"top_logprobs,omitempty"`
 	Dimensions          int               `json:"dimensions,omitempty"`
-	Modalities          any               `json:"modalities,omitempty"`
-	Audio               any               `json:"audio,omitempty"`
+	Modalities          json.RawMessage   `json:"modalities,omitempty"`
+	Audio               json.RawMessage   `json:"audio,omitempty"`
 	EnableThinking      any               `json:"enable_thinking,omitempty"` // ali
-	ExtraBody           any               `json:"extra_body,omitempty"`
+	ExtraBody           json.RawMessage   `json:"extra_body,omitempty"`
 	WebSearchOptions    *WebSearchOptions `json:"web_search_options,omitempty"`
 	// OpenRouter Params
 	Reasoning json.RawMessage `json:"reasoning,omitempty"`

relay/channel/gemini/relay-gemini.go

@@ -175,12 +175,6 @@ func CovertGemini2OpenAI(textRequest dto.GeneralOpenAIRequest, info *relaycommon
 		// common.SysLog("tools: " + fmt.Sprintf("%+v", geminiRequest.Tools))
 		// json_data, _ := json.Marshal(geminiRequest.Tools)
 		// common.SysLog("tools_json: " + string(json_data))
-	} else if textRequest.Functions != nil {
-		//geminiRequest.Tools = []GeminiChatTool{
-		//	{
-		//		FunctionDeclarations: textRequest.Functions,
-		//	},
-		//}
 	}
 
 	if textRequest.ResponseFormat != nil && (textRequest.ResponseFormat.Type == "json_schema" || textRequest.ResponseFormat.Type == "json_object") {