新增: SFTP直连+网站预览+OSS区域嗅探+热键+BGM播放

frontend/src/api/oss-transport.ts

@@ -9,8 +9,8 @@ import type { ConnectionProfile } from './connection-manager'
 import {
   OssConnect, OssDisconnect, OssListDir, OssReadFile,
   OssWriteFile, OssGetFileInfo, OssCreateDir, OssCreateFile,
-  OssDeletePath, OssRenamePath, OssDownloadToTemp, OssGetCommonPaths,
-  OssWriteBase64File, OssGetSignedURL,
+  OssDeletePath, OssRenamePath, OssDownloadToTemp, OssDownloadSiteForPreview,
+  OssGetCommonPaths, OssWriteBase64File, OssGetSignedURL,
 } from '@bindings/u-desk/app'
 
 function transformFile(file: any): FileItem {
@@ -21,13 +21,9 @@ function transformFileList(files: any[]): FileItem[] {
   return files.map(transformFile)
 }
 
-const PREVIEW_CACHE_MAX = 50
-
 export class OssTransport implements FsTransport {
   private profile: ConnectionProfile
   private connID: string | null = null
-  private previewCache = new Map<string, string>()
-  private previewOrder: string[] = []
 
   constructor(profile: ConnectionProfile) {
     this.profile = profile
@@ -35,7 +31,7 @@ export class OssTransport implements FsTransport {
 
   async connect(): Promise<string> {
     const result = await OssConnect({
-      provider: this.profile.type,
+      provider: this.profile.provider || 'qiniu',
       access_key: this.profile.accessKey || '',
       secret_key: this.profile.secretKey || '',
       endpoint: this.profile.endpoint || '',
@@ -53,8 +49,6 @@ export class OssTransport implements FsTransport {
       }
       this.connID = null
     }
-    this.previewCache.clear()
-    this.previewOrder = []
   }
 
   private requireConn(): string {
@@ -169,22 +163,14 @@ export class OssTransport implements FsTransport {
 
   // ====== 预览辅助 ======
 
+  /** 下载远程文件到本地临时目录用于预览（缓存由 Go 后端管理） */
   async downloadForPreview(remotePath: string): Promise<string> {
-    if (this.previewCache.has(remotePath)) {
-      this.previewOrder = this.previewOrder.filter(p => p !== remotePath)
-      this.previewOrder.push(remotePath)
-      return this.previewCache.get(remotePath)!
-    }
-    const localPath = await OssDownloadToTemp(this.requireConn(), remotePath)
+    return OssDownloadToTemp(this.requireConn(), remotePath)
+  }
 
-    if (this.previewOrder.length >= PREVIEW_CACHE_MAX) {
-      const oldest = this.previewOrder.shift()!
-      this.previewCache.delete(oldest)
-    }
-
-    this.previewCache.set(remotePath, localPath)
-    this.previewOrder.push(remotePath)
-    return localPath
+  /** 下载 HTML 及其引用的资源到临时目录用于网站预览 */
+  async downloadSiteForPreview(remotePath: string): Promise<string> {
+    return OssDownloadSiteForPreview(this.requireConn(), remotePath)
   }
 
   /** 获取预签名 URL（用于直接预览） */