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

backend/internal/service/openai_responses_item_id.go

@@ -0,0 +1,81 @@
+package service
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
+)
+
+// Invalid replayed IDs are removed rather than rewritten because a fabricated
+// msg/fc ID may point at a different upstream object.
+func shouldStripOpenAIResponsesInputItemID(itemType, id string) bool {
+	if id == "" {
+		return false
+	}
+	if itemType == "message" {
+		return !strings.HasPrefix(id, "msg")
+	}
+	if itemType == "reasoning" {
+		return !strings.HasPrefix(id, "rs")
+	}
+	if isCodexToolCallInputType(itemType) {
+		return !strings.HasPrefix(id, "fc")
+	}
+	return false
+}
+
+func sanitizeOpenAIResponsesInputItemIDs(body []byte) ([]byte, bool, error) {
+	input := gjson.GetBytes(body, "input")
+	if !input.IsArray() {
+		return body, false, nil
+	}
+
+	items := make([][]byte, 0)
+	changed := false
+	var sanitizeErr error
+	index := 0
+	input.ForEach(func(_, item gjson.Result) bool {
+		currentIndex := index
+		index++
+		itemBody := []byte(item.Raw)
+		if item.IsObject() {
+			itemType := item.Get("type")
+			id := item.Get("id")
+			if itemType.Type == gjson.String && id.Type == gjson.String &&
+				shouldStripOpenAIResponsesInputItemID(itemType.String(), id.String()) {
+				itemBody, sanitizeErr = sjson.DeleteBytes(itemBody, "id")
+				if sanitizeErr != nil {
+					sanitizeErr = fmt.Errorf("delete input.%d.id: %w", currentIndex, sanitizeErr)
+					return false
+				}
+				changed = true
+			}
+		}
+		items = append(items, itemBody)
+		return true
+	})
+	if sanitizeErr != nil {
+		return nil, false, sanitizeErr
+	}
+	if !changed {
+		return body, false, nil
+	}
+
+	rebuiltInput := make([]byte, 0, len(input.Raw))
+	rebuiltInput = append(rebuiltInput, '[')
+	for i, item := range items {
+		if i > 0 {
+			rebuiltInput = append(rebuiltInput, ',')
+		}
+		rebuiltInput = append(rebuiltInput, item...)
+	}
+	rebuiltInput = append(rebuiltInput, ']')
+
+	sanitized, err := sjson.SetRawBytes(body, "input", rebuiltInput)
+	if err != nil {
+		return nil, false, fmt.Errorf("replace sanitized input: %w", err)
+	}
+	return sanitized, true, nil
+}