file列表页预览窗口支持预览常见在线视频服务商的视频，比如youtube，vimeo，哔哩哔哩，优酷，搜狐，爱奇艺等

frontend/src/core/features/block_editor/blocks/video/VideoBlockNodeView.vue

@@ -10,6 +10,7 @@ import { computed } from 'vue'
 import { NodeViewWrapper } from '@tiptap/vue-3'
 import type { NodeViewProps } from '@tiptap/vue-3'
 import VideoPreview from '@/views/pagetype/file/VideoPreview.vue'
+import { detectVideoProvider } from '@/shared/utils/videoProviders'
 
 const props = defineProps<NodeViewProps>()
 
@@ -18,34 +19,8 @@ const hasSrc = computed(() => !!src.value)
 
 // ── URL 检测 ──
 
-function getYouTubeId(url: string): string | null {
-  const patterns = [
-    /(?:youtube\.com\/watch\?v=|youtu\.be\/|youtube\.com\/embed\/|youtube\.com\/shorts\/)([a-zA-Z0-9_-]{11})/,
-    /^([a-zA-Z0-9_-]{11})$/,
-  ]
-  for (const p of patterns) {
-    const m = url.match(p)
-    if (m?.[1]) return m[1]
-  }
-  return null
-}
-
-function getVimeoId(url: string): string | null {
-  const m = url.match(/(?:vimeo\.com\/|player\.vimeo\.com\/video\/)(\d+)/)
-  return m?.[1] || null
-}
-
-const isYouTube = computed(() => !!getYouTubeId(src.value))
-const isVimeo = computed(() => !!getVimeoId(src.value))
-const isEmbedUrl = computed(() => isYouTube.value || isVimeo.value)
-
-const embedSrc = computed(() => {
-  const ytId = getYouTubeId(src.value)
-  if (ytId) return `https://www.youtube-nocookie.com/embed/${ytId}`
-  const vId = getVimeoId(src.value)
-  if (vId) return `https://player.vimeo.com/video/${vId}`
-  return ''
-})
+const videoProvider = computed(() => detectVideoProvider(src.value))
+const isEmbedUrl = computed(() => !!videoProvider.value)
 
 function getFileName(url: string): string {
   const parts = url.split('/')
@@ -59,13 +34,13 @@ function getFileName(url: string): string {
     data-type="videoBlock"
     class="video-block-nodeview"
   >
-    <!-- YouTube / Vimeo 嵌入 -->
+    <!-- 在线视频嵌入（YouTube / Vimeo / Bilibili 等） -->
     <div
       v-if="hasSrc && isEmbedUrl"
       class="video-block-embed"
     >
       <iframe
-        :src="embedSrc"
+        :src="videoProvider!.embedUrl"
         class="video-block-iframe"
         allow="autoplay; fullscreen; picture-in-picture"
         allowfullscreen

frontend/src/shared/utils/videoProviders.ts

@@ -0,0 +1,97 @@
+/**
+ * videoProviders.ts — 在线视频服务商 URL 检测与嵌入
+ *
+ * 与后端 File.is_remote_file 配合：当 file_url 以 http/https 开头，
+ * 后端不下载文件直接存为远程记录。此工具检测 URL 域名并生成对应的
+ * iframe embed URL，供文件预览和 Block Editor 视频块共享使用。
+ */
+
+export interface VideoProvider {
+  name: string
+  embedUrl: string
+}
+
+// ── 各平台 ID 提取与 embed URL 构建 ──
+
+const YOUTUBE_PATTERNS = [
+  /(?:youtube\.com\/watch\?v=|youtu\.be\/|youtube\.com\/embed\/|youtube\.com\/shorts\/)([a-zA-Z0-9_-]{11})/,
+  /^([a-zA-Z0-9_-]{11})$/,
+]
+
+function detectYouTube(url: string): VideoProvider | null {
+  for (const p of YOUTUBE_PATTERNS) {
+    const m = url.match(p)
+    if (m?.[1]) {
+      return { name: 'YouTube', embedUrl: `https://www.youtube-nocookie.com/embed/${m[1]}` }
+    }
+  }
+  return null
+}
+
+function detectVimeo(url: string): VideoProvider | null {
+  const m = url.match(/(?:vimeo\.com\/|player\.vimeo\.com\/video\/)(\d+)/)
+  if (m?.[1]) {
+    return { name: 'Vimeo', embedUrl: `https://player.vimeo.com/video/${m[1]}` }
+  }
+  return null
+}
+
+function detectBilibili(url: string): VideoProvider | null {
+  // bilibili.com/video/BVxxx/ 或 b23.tv/BVxxx
+  const m = url.match(/(?:bilibili\.com\/video\/|b23\.tv\/)(BV[a-zA-Z0-9]+)/)
+  if (m?.[1]) {
+    return { name: 'Bilibili', embedUrl: `https://player.bilibili.com/player.html?bvid=${m[1]}` }
+  }
+  return null
+}
+
+function detectYouku(url: string): VideoProvider | null {
+  // v.youku.com/v_show/id_Xxxxxxxxxx.html
+  const m = url.match(/v\.youku\.com\/v_show\/id_([a-zA-Z0-9=]+)\.html/)
+  if (m?.[1]) {
+    return { name: 'Youku', embedUrl: `https://player.youku.com/embed/${m[1]}` }
+  }
+  return null
+}
+
+function detectIQiyi(url: string): VideoProvider | null {
+  // www.iqiyi.com/v_videoid.html
+  const m = url.match(/iqiyi\.com\/(?:v_|)([a-zA-Z0-9]+)\.html/)
+  if (m?.[1]) {
+    return { name: 'iQiyi', embedUrl: `https://player.iqiyi.com/player/player.html?vid=${m[1]}` }
+  }
+  return null
+}
+
+function detectSohu(url: string): VideoProvider | null {
+  // tv.sohu.com/v/...html 或 my.tv.sohu.com/...
+  if (/tv\.sohu\.com/.test(url)) {
+    // Sohu embed URL 格式不固定，返回原始 URL 直接 iframe
+    return { name: 'Sohu', embedUrl: url }
+  }
+  return null
+}
+
+// ── 统一检测入口 ──
+
+const DETECTORS: Array<(url: string) => VideoProvider | null> = [
+  detectYouTube,
+  detectVimeo,
+  detectBilibili,
+  detectYouku,
+  detectIQiyi,
+  detectSohu,
+]
+
+/**
+ * 检测 URL 是否匹配已知在线视频服务商。
+ * 匹配成功返回 { name, embedUrl }，失败返回 null。
+ */
+export function detectVideoProvider(url: string): VideoProvider | null {
+  if (!url || !/^https?:\/\//.test(url)) return null
+  for (const detect of DETECTORS) {
+    const result = detect(url)
+    if (result) return result
+  }
+  return null
+}

frontend/src/views/pagetype/file/file_preview.vue

@@ -72,6 +72,15 @@
             @error="onPresentationError"
           />
         </div>
+        <!-- 在线视频嵌入 -->
+        <div v-else-if="onlineVideo" class="visual-online-video-wrapper">
+          <iframe
+            :src="onlineVideo.embedUrl"
+            class="visual-online-video-iframe"
+            allow="autoplay; fullscreen; picture-in-picture"
+            allowfullscreen
+          />
+        </div>
         <!-- 视频预览 -->
         <div v-else-if="isVideoFile" class="visual-video-wrapper">
           <VideoPreview
@@ -199,6 +208,7 @@
 import { computed, defineAsyncComponent, onMounted, onUnmounted, ref, watch } from 'vue'
 import { Icon } from '@iconify/vue'
 import { t } from '@/shared/i18n'
+import { detectVideoProvider } from '@/shared/utils/videoProviders'
 import axios from 'axios'
 
 const SpreadsheetPreview = defineAsyncComponent(() => import('./SpreadsheetPreview.vue'))
@@ -237,6 +247,11 @@ const isPresentationFile = computed(() => PRESENTATION_EXTENSIONS.includes((prop
 const isVideoFile = computed(() => VIDEO_EXTENSIONS.includes((props.row?.file_type || '').toLowerCase()))
 const isAudioFile = computed(() => AUDIO_EXTENSIONS.includes((props.row?.file_type || '').toLowerCase()))
 
+const onlineVideo = computed(() => {
+  const url = props.row?.file_url
+  return url ? detectVideoProvider(url) : null
+})
+
 const canPreview = computed(() => isImageFile.value || isPdfFile.value || isDocxFile.value || isSpreadsheetFile.value || isTextFile.value || isPresentationFile.value || isVideoFile.value || isAudioFile.value)
 
 const EDITABLE_EXTENSIONS = ['docx', 'xls', 'xlsx', 'csv', 'txt']
@@ -530,6 +545,7 @@ onUnmounted(() => {
 .preview-visual:has(.visual-pdf-wrapper),
 .preview-visual:has(.visual-document-wrapper),
 .preview-visual:has(.visual-presentation-wrapper),
+.preview-visual:has(.visual-online-video-wrapper),
 .preview-visual:has(.visual-video-wrapper),
 .preview-visual:has(.visual-audio-wrapper) {
   min-height: 400px;
@@ -539,6 +555,7 @@ onUnmounted(() => {
 .preview-visual:has(.visual-spreadsheet-wrapper),
 .preview-visual:has(.visual-text-wrapper),
 .preview-visual:has(.visual-presentation-wrapper),
+.preview-visual:has(.visual-online-video-wrapper),
 .preview-visual:has(.visual-video-wrapper),
 .preview-visual:has(.visual-audio-wrapper) {
   align-items: stretch;
@@ -632,6 +649,20 @@ onUnmounted(() => {
   overflow: hidden;
 }
 
+/* 在线视频嵌入 */
+.visual-online-video-wrapper {
+  width: 100%;
+  flex: 1;
+  position: relative;
+  background: #000;
+}
+
+.visual-online-video-iframe {
+  width: 100%;
+  height: 100%;
+  border: none;
+}
+
 /* 音频预览 — 允许音量弹窗向上溢出 */
 .visual-audio-wrapper {
   width: 100%;