优化结构

internal/paymentkit/json.go

@@ -15,14 +15,6 @@ func JSONObject(raw []byte) map[string]any {
 	return object
 }
 
-func NestedString(value any, keys ...string) string {
-	found := nestedValue(value, keys...)
-	if found == nil {
-		return ""
-	}
-	return strings.TrimSpace(fmt.Sprint(found))
-}
-
 func StringAtPath(value any, path string) string {
 	found := ValueAtPath(value, path)
 	if found == nil {
@@ -46,21 +38,3 @@ func ValueAtPath(value any, path string) any {
 	}
 	return current
 }
-
-func nestedValue(value any, keys ...string) any {
-	object, ok := value.(map[string]any)
-	if !ok {
-		return nil
-	}
-	for _, key := range keys {
-		if found, exists := object[key]; exists && found != nil && fmt.Sprint(found) != "" {
-			return found
-		}
-	}
-	for _, nestedKey := range []string{"data", "result", "order", "transaction", "response"} {
-		if found := nestedValue(object[nestedKey], keys...); found != nil {
-			return found
-		}
-	}
-	return nil
-}