From 755489546b6ee95571782b6cd6b4d13c3a10d0af Mon Sep 17 00:00:00 2001
From: LaoShui <79132480+laoshuikaixue@users.noreply.github.com>
Date: Wed, 18 Feb 2026 20:24:43 +0800
Subject: [PATCH] =?UTF-8?q?refactor(util):=20=E7=AE=80=E5=8C=96=E6=96=87?=
 =?UTF-8?q?=E4=BB=B6=E5=B8=AE=E5=8A=A9=E5=B7=A5=E5=85=B7=E5=87=BD=E6=95=B0?=
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- 移除未使用的 path 模块引入
- 将 getFileExtension 函数从异步改为同步
- 优化 sanitizeFilename 函数逻辑，移除冗余扩展名处理
---
 util/fileHelper.js | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/util/fileHelper.js b/util/fileHelper.js
index 24f5a5a..6f49eb7 100644
--- a/util/fileHelper.js
+++ b/util/fileHelper.js
@@ -1,6 +1,5 @@
 const fs = require('fs')
 const crypto = require('crypto')
-const path = require('path')
 const logger = require('./logger')
 
 function isTempFile(file) {
@@ -61,7 +60,7 @@ async function readFileChunk(filePath, offset, length) {
   return buffer
 }
 
-async function getFileExtension(filename) {
+function getFileExtension(filename) {
   if (!filename) return 'mp3'
   if (filename.includes('.')) {
     return filename.split('.').pop().toLowerCase()
@@ -71,7 +70,6 @@ async function getFileExtension(filename) {
 
 function sanitizeFilename(filename) {
   if (!filename) return 'unknown'
-  const ext = getFileExtension(filename)
   return filename
     .replace(/\.[^.]+$/, '')
     .replace(/\s/g, '')