修复bug，针对部分没有MD5名字的视频也能支持导出

src/main/export-service.ts

@@ -1152,11 +1152,10 @@ export async function runExport(
           ].filter((value): value is string => Boolean(value))
           if (!videoService) {
             keepMediaError(request, message, '数据库未连接，无法定位本地视频')
-          } else if (hashes.length === 0) {
-            keepMediaError(request, message, '视频标识不完整，无法定位本地视频')
           } else {
             const resolved = await videoService.resolve(hashes, {
               createTime: message.createTime,
+              byteLength: message.contentData.byteLength,
               duration: message.contentData.duration,
               width: message.contentData.width,
               height: message.contentData.height

src/main/index.ts

@@ -1339,7 +1339,13 @@ app.whenReady().then(async () => {
     async (
       _,
       hashes: string[],
-      options?: { createTime?: number; duration?: number; width?: number; height?: number }
+      options?: {
+        createTime?: number
+        byteLength?: number
+        duration?: number
+        width?: number
+        height?: number
+      }
     ) => {
       if (!videoAssetService) {
         const client = chat.getChatDb()?.getWcdb4Client()

src/main/message-parser.ts

@@ -65,6 +65,7 @@ type VideoContent = {
   md5?: string
   newMd5?: string
   rawMd5?: string
+  byteLength?: number
   duration?: number
   width?: number
   height?: number
@@ -160,12 +161,11 @@ function parseVideoMessage(content: string): ParsedContent {
   const md5 = normalizeMd5(extractXmlAttribute(decoded, 'videomsg', 'md5'))
   const newMd5 = normalizeMd5(extractXmlAttribute(decoded, 'videomsg', 'newmd5'))
   const rawMd5 = normalizeMd5(extractXmlAttribute(decoded, 'videomsg', 'rawmd5'))
-  if (!md5 && !newMd5 && !rawMd5) return { type: 'unknown', raw: content }
-
+  const byteLength = Number(extractXmlAttribute(decoded, 'videomsg', 'length')) || undefined
   const duration = Number(extractXmlAttribute(decoded, 'videomsg', 'playlength')) || undefined
   const width = Number(extractXmlAttribute(decoded, 'videomsg', 'cdnthumbwidth')) || undefined
   const height = Number(extractXmlAttribute(decoded, 'videomsg', 'cdnthumbheight')) || undefined
-  return { type: 'video', md5, newMd5, rawMd5, duration, width, height }
+  return { type: 'video', md5, newMd5, rawMd5, byteLength, duration, width, height }
 }
 
 function parseSystemMessage(content: string): ParsedContent {

src/main/video-asset-service.ts

@@ -10,6 +10,7 @@ type VideoAsset = {
 
 export type VideoResolveOptions = {
   createTime?: number
+  byteLength?: number
   duration?: number
   width?: number
   height?: number
@@ -52,7 +53,13 @@ export class VideoAssetService {
           .filter((value) => /^[a-f0-9]{32}$/.test(value))
       )
     )
-    if (candidates.length === 0) return { success: false, error: '视频标识为空' }
+    const hasMetadata =
+      Number(options.byteLength) > 0 ||
+      Number(options.duration) > 0 ||
+      (Number(options.width) > 0 && Number(options.height) > 0)
+    if (candidates.length === 0 && !hasMetadata) {
+      return { success: false, error: '视频标识为空' }
+    }
 
     const hardlinkDb = path.join(
       this.client.getAccountRoot(),
@@ -178,6 +185,21 @@ export class VideoAssetService {
 
     let narrowed = assets
     let appliedCriteria = 0
+    const byteLength = Number(options.byteLength)
+    if (byteLength > 0) {
+      const matches = narrowed.filter((asset) => {
+        try {
+          return fs.statSync(asset.filePath).size === byteLength
+        } catch {
+          return false
+        }
+      })
+      if (matches.length > 0) {
+        narrowed = matches
+        appliedCriteria += 1
+      }
+    }
+
     const width = Number(options.width)
     const height = Number(options.height)
     if (width > 0 && height > 0) {