Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/service/openai_gateway_grok_chat_image_tools.go

@@ -0,0 +1,83 @@
+package service
+
+import (
+	"encoding/json"
+	"strings"
+
+	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
+)
+
+// 当前轮的内联 image_url 已可由 Grok 直接读取；若同时保留客户端本地
+// view_image，Grok 可能只预告调用工具而不继续作答，因此只移除这一冗余自动选择。
+func stripRedundantGrokChatViewImageTool(body []byte) ([]byte, error) {
+	messages := gjson.GetBytes(body, "messages")
+	if !messages.IsArray() {
+		return body, nil
+	}
+	items := messages.Array()
+	if len(items) == 0 {
+		return body, nil
+	}
+	current := items[len(items)-1]
+	if strings.TrimSpace(current.Get("role").String()) != "user" ||
+		!openAIJSONValueMayContainImageInput(current) {
+		return body, nil
+	}
+
+	toolChoice := gjson.GetBytes(body, "tool_choice")
+	if toolChoice.IsObject() && strings.TrimSpace(toolChoice.Get("type").String()) == "function" {
+		choiceName := strings.TrimSpace(toolChoice.Get("function.name").String())
+		if choiceName == "" {
+			choiceName = strings.TrimSpace(toolChoice.Get("name").String())
+		}
+		if choiceName == "view_image" {
+			return body, nil
+		}
+	}
+
+	tools := gjson.GetBytes(body, "tools")
+	if !tools.IsArray() {
+		return body, nil
+	}
+	filtered := make([]json.RawMessage, 0, len(tools.Array()))
+	changed := false
+	for _, tool := range tools.Array() {
+		toolName := strings.TrimSpace(tool.Get("function.name").String())
+		if toolName == "" {
+			toolName = strings.TrimSpace(tool.Get("name").String())
+		}
+		if strings.TrimSpace(tool.Get("type").String()) == "function" && toolName == "view_image" {
+			changed = true
+			continue
+		}
+		filtered = append(filtered, json.RawMessage(tool.Raw))
+	}
+	if !changed {
+		return body, nil
+	}
+	if len(filtered) == 0 && strings.TrimSpace(toolChoice.String()) == "required" {
+		return body, nil
+	}
+
+	if len(filtered) > 0 {
+		encoded, err := json.Marshal(filtered)
+		if err != nil {
+			return nil, err
+		}
+		return sjson.SetRawBytes(body, "tools", encoded)
+	}
+
+	out, err := sjson.DeleteBytes(body, "tools")
+	if err != nil {
+		return nil, err
+	}
+	out, err = sjson.DeleteBytes(out, "parallel_tool_calls")
+	if err != nil {
+		return nil, err
+	}
+	if strings.TrimSpace(toolChoice.String()) == "auto" {
+		out, err = sjson.DeleteBytes(out, "tool_choice")
+	}
+	return out, err
+}