From f1dc65b1d02651be1edd61cd4f4a231adf14c7c0 Mon Sep 17 00:00:00 2001
From: keven1024 <keven@fudaoyuan.icu>
Date: Wed, 8 Apr 2026 23:19:19 +0800
Subject: [PATCH] feat(front): add FileIcon components for audio, video, image,
 and generic file previews with dynamic thumbnail extraction

---
 front/components/FileIcon/File.vue  | 41 ++++++++++++++++
 front/components/FileIcon/Image.vue | 24 +++++++++
 front/components/FileIcon/Index.vue | 59 +++++------------------
 front/components/FileIcon/Video.vue | 75 +++++++++++++++++++++++++++++
 4 files changed, 153 insertions(+), 46 deletions(-)
 create mode 100644 front/components/FileIcon/File.vue
 create mode 100644 front/components/FileIcon/Image.vue
 create mode 100644 front/components/FileIcon/Video.vue

diff --git a/front/components/FileIcon/File.vue b/front/components/FileIcon/File.vue
new file mode 100644
index 0000000..be5442b
--- /dev/null
+++ b/front/components/FileIcon/File.vue
@@ -0,0 +1,41 @@
+<script setup lang="ts">
+import { LucideFileAudio, LucideFileVideo, LucideFile, LucideFileCode, LucideFileArchive, LucideFileText } from 'lucide-vue-next'
+import type { filePreview } from './Index.vue'
+
+const props = defineProps<{
+    file: File | filePreview
+}>()
+const fileIcon = computed(() => {
+    const [baseType, type] = props?.file?.type?.split('/')
+    // if (baseType === 'video') {
+    //     return LucideFileVideo
+    // }
+    if (baseType === 'audio') {
+        return LucideFileAudio
+    }
+    if (baseType === 'text' || ['json', 'ld+json', 'html']?.includes(type ?? '')) {
+        return LucideFileCode
+    }
+    if (
+        [
+            'pdf',
+            'msword',
+            'vnd.openxmlformats-officedocument.wordprocessingml.document',
+            'vnd.ms-excel',
+            'vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+            'vnd.ms-powerpoint',
+            'vnd.openxmlformats-officedocument.presentationml.presentation',
+        ].includes(type ?? '')
+    ) {
+        return LucideFileText
+    }
+    if (['zip', 'vnd.rar', 'x-tar', 'gz', 'bz2', 'x-7z-compressed'].includes(type ?? '')) {
+        return LucideFileArchive
+    }
+    return LucideFile
+})
+</script>
+
+<template>
+    <component :is="fileIcon" />
+</template>
diff --git a/front/components/FileIcon/Image.vue b/front/components/FileIcon/Image.vue
new file mode 100644
index 0000000..5d390d2
--- /dev/null
+++ b/front/components/FileIcon/Image.vue
@@ -0,0 +1,24 @@
+<script setup lang="ts">
+import type { filePreview } from './Index.vue'
+
+const props = defineProps<{
+    file: File | filePreview
+}>()
+
+const imageUrl = computed(() => {
+    if (props?.file?.type?.startsWith('image/') && props?.file instanceof File) {
+        return URL.createObjectURL(props?.file)
+    }
+    return null
+})
+
+onUnmounted(() => {
+    if (imageUrl.value) {
+        URL.revokeObjectURL(imageUrl.value)
+    }
+})
+</script>
+
+<template>
+    <img v-if="!!imageUrl" :src="imageUrl" />
+</template>
diff --git a/front/components/FileIcon/Index.vue b/front/components/FileIcon/Index.vue
index 278dbaa..1bd5cde 100644
--- a/front/components/FileIcon/Index.vue
+++ b/front/components/FileIcon/Index.vue
@@ -1,5 +1,8 @@
 <script setup lang="ts">
 import { cx } from 'class-variance-authority'
+import FileIcon from './File.vue'
+import ImageIcon from './Image.vue'
+import VideoIcon from './Video.vue'
 export type filePreview = {
     type: string
     name: string
@@ -17,56 +20,20 @@ const props = withDefaults(
         size: 'md',
     }
 )
-const imageUrl = computed(() => {
-    if (props?.file?.type?.startsWith('image/') && props?.file instanceof File) {
-        return URL.createObjectURL(props?.file)
-    }
-    return null
-})
-
-onUnmounted(() => {
-    if (imageUrl.value) {
-        URL.revokeObjectURL(imageUrl.value)
-    }
-})
-
-const fileIcon = computed(() => {
-    const [baseType, type] = props?.file?.type?.split('/')
-    if (baseType === 'video') {
-        return LucideFileVideo
-    }
-    if (baseType === 'audio') {
-        return LucideFileAudio
-    }
-    if (baseType === 'text' || ['json', 'ld+json', 'html']?.includes(type ?? '')) {
-        return LucideFileCode
-    }
-    if (
-        [
-            'pdf',
-            'msword',
-            'vnd.openxmlformats-officedocument.wordprocessingml.document',
-            'vnd.ms-excel',
-            'vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-            'vnd.ms-powerpoint',
-            'vnd.openxmlformats-officedocument.presentationml.presentation',
-        ].includes(type ?? '')
-    ) {
-        return LucideFileText
-    }
-    if (['zip', 'vnd.rar', 'x-tar', 'gz', 'bz2', 'x-7z-compressed'].includes(type ?? '')) {
-        return LucideFileArchive
-    }
-    return LucideFile
-})
+const isImage = computed(() => props?.file?.type?.startsWith('image/'))
+const isVideo = computed(() => props?.file?.type?.startsWith('video/'))
 </script>
 
 <template>
-    <div v-if="!!imageUrl" :class="cx('flex overflow-hidden', size === 'sm' && 'max-w-20 max-h-16', size === 'md' && 'max-w-30 max-h-20')">
-        <img :src="imageUrl" class="block max-w-full max-h-full object-contain border border-black/20 rounded" />
+    <div v-if="isImage || isVideo" :class="cx('flex overflow-hidden', size === 'sm' && 'max-w-20 max-h-16', size === 'md' && 'max-w-30 max-h-20')">
+        <component
+            :is="isImage ? ImageIcon : VideoIcon"
+            :file="props?.file"
+            class="block max-w-full max-h-full object-contain border border-black/20 rounded"
+        />
     </div>
     <div
-        v-if="!imageUrl"
+        v-else
         :class="
             cx(
                 'flex justify-center items-center bg-white/80',
@@ -76,6 +43,6 @@ const fileIcon = computed(() => {
             )
         "
     >
-        <component :is="fileIcon" class="size-[62.5%]" />
+        <component :is="FileIcon" :file="props?.file" class="size-[62.5%]" />
     </div>
 </template>
diff --git a/front/components/FileIcon/Video.vue b/front/components/FileIcon/Video.vue
new file mode 100644
index 0000000..a28fbc8
--- /dev/null
+++ b/front/components/FileIcon/Video.vue
@@ -0,0 +1,75 @@
+<script setup lang="ts">
+import type { filePreview } from './Index.vue'
+
+const props = defineProps<{
+    file: File | filePreview
+}>()
+
+const { state: thumbnailUrl } = useAsyncState(async () => {
+    if (props.file instanceof File && props.file.type.startsWith('video/')) {
+        return await extractThumbnail(props.file)
+    }
+    return null
+}, null)
+
+async function extractThumbnail(file: File): Promise<string> {
+    return new Promise((resolve, reject) => {
+        const video = document.createElement('video')
+        const objectUrl = URL.createObjectURL(file)
+
+        video.muted = true
+        video.playsInline = true
+        video.preload = 'metadata'
+
+        video.onloadedmetadata = () => {
+            video.currentTime = video.duration * 0.1
+        }
+
+        video.onseeked = async () => {
+            try {
+                // WebCodecs: capture a VideoFrame from the video element
+                const frame = new VideoFrame(video)
+                const bitmap = await createImageBitmap(frame)
+                frame.close()
+
+                const canvas = new OffscreenCanvas(bitmap.width, bitmap.height)
+                const ctx = canvas.getContext('2d')!
+                ctx.drawImage(bitmap, 0, 0)
+                bitmap.close()
+
+                const blob = await canvas.convertToBlob({ type: 'image/jpeg', quality: 0.8 })
+                URL.revokeObjectURL(objectUrl)
+                resolve(URL.createObjectURL(blob))
+            } catch (e) {
+                URL.revokeObjectURL(objectUrl)
+                reject(e)
+            }
+        }
+
+        video.onerror = () => {
+            URL.revokeObjectURL(objectUrl)
+            reject(new Error('Video load failed'))
+        }
+
+        video.src = objectUrl
+    })
+}
+
+onUnmounted(() => {
+    if (!!thumbnailUrl.value) {
+        URL.revokeObjectURL(thumbnailUrl.value)
+    }
+})
+</script>
+
+<template>
+    <div v-if="thumbnailUrl" class="relative grayscale-50 overflow-hidden">
+        <img :src="thumbnailUrl" class="object-contain block max-w-full max-h-full" />
+        <LucidePlay class="size-[40%] absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 text-white" />
+    </div>
+    <div v-else>
+        <div class="h-16 aspect-video flex justify-center items-center bg-white/80 rounded-sm">
+            <LucideVideo class="size-10" />
+        </div>
+    </div>
+</template>