feat: enhance request handling with pass-through options and system prompt support

dto/channel_settings.go

@@ -1,7 +1,9 @@
 package dto
 
 type ChannelSettings struct {
-	ForceFormat       bool   `json:"force_format,omitempty"`
-	ThinkingToContent bool   `json:"thinking_to_content,omitempty"`
-	Proxy             string `json:"proxy"`
+	ForceFormat            bool   `json:"force_format,omitempty"`
+	ThinkingToContent      bool   `json:"thinking_to_content,omitempty"`
+	Proxy                  string `json:"proxy"`
+	PassThroughBodyEnabled bool   `json:"pass_through_body_enabled,omitempty"`
+	SystemPrompt           string `json:"system_prompt,omitempty"`
 }

dto/openai_request.go

@@ -73,6 +73,15 @@ func (r *GeneralOpenAIRequest) ToMap() map[string]any {
 	return result
 }
 
+func (r *GeneralOpenAIRequest) GetSystemRoleName() string {
+	if strings.HasPrefix(r.Model, "o") {
+		if !strings.HasPrefix(r.Model, "o1-mini") && !strings.HasPrefix(r.Model, "o1-preview") {
+			return "developer"
+		}
+	}
+	return "system"
+}
+
 type ToolCallRequest struct {
 	ID       string          `json:"id,omitempty"`
 	Type     string          `json:"type"`