mirror of
https://github.com/hicccc77/WeFlow.git
synced 2026-03-24 23:06:51 +00:00
545 lines
19 KiB
TypeScript
545 lines
19 KiB
TypeScript
import { join } from 'path'
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import { existsSync, readdirSync, statSync, readFileSync, appendFileSync, mkdirSync } from 'fs'
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import { app } from 'electron'
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import { ConfigService } from './config'
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import { wcdbService } from './wcdbService'
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export interface VideoInfo {
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videoUrl?: string // 视频文件路径（用于 readFile）
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coverUrl?: string // 封面 data URL
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thumbUrl?: string // 缩略图 data URL
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exists: boolean
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}
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interface TimedCacheEntry<T> {
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value: T
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expiresAt: number
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}
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interface VideoIndexEntry {
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videoPath?: string
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coverPath?: string
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thumbPath?: string
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}
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class VideoService {
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private configService: ConfigService
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private hardlinkResolveCache = new Map<string, TimedCacheEntry<string | null>>()
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private videoInfoCache = new Map<string, TimedCacheEntry<VideoInfo>>()
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private videoDirIndexCache = new Map<string, TimedCacheEntry<Map<string, VideoIndexEntry>>>()
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private pendingVideoInfo = new Map<string, Promise<VideoInfo>>()
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private readonly hardlinkCacheTtlMs = 10 * 60 * 1000
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private readonly videoInfoCacheTtlMs = 2 * 60 * 1000
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private readonly videoIndexCacheTtlMs = 90 * 1000
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private readonly maxCacheEntries = 2000
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private readonly maxIndexEntries = 6
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constructor() {
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this.configService = new ConfigService()
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}
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private log(message: string, meta?: Record<string, unknown>): void {
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try {
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const timestamp = new Date().toISOString()
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const metaStr = meta ? ` ${JSON.stringify(meta)}` : ''
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const logDir = join(app.getPath('userData'), 'logs')
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if (!existsSync(logDir)) mkdirSync(logDir, { recursive: true })
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appendFileSync(join(logDir, 'wcdb.log'), `[${timestamp}] [VideoService] ${message}${metaStr}\n`, 'utf8')
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} catch { }
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}
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private readTimedCache<T>(cache: Map<string, TimedCacheEntry<T>>, key: string): T | undefined {
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const hit = cache.get(key)
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if (!hit) return undefined
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if (hit.expiresAt <= Date.now()) {
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cache.delete(key)
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return undefined
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}
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return hit.value
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}
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private writeTimedCache<T>(
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cache: Map<string, TimedCacheEntry<T>>,
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key: string,
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value: T,
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ttlMs: number,
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maxEntries: number
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): void {
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cache.set(key, { value, expiresAt: Date.now() + ttlMs })
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if (cache.size <= maxEntries) return
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const now = Date.now()
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for (const [cacheKey, entry] of cache) {
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if (entry.expiresAt <= now) {
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cache.delete(cacheKey)
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}
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}
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while (cache.size > maxEntries) {
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const oldestKey = cache.keys().next().value as string | undefined
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if (!oldestKey) break
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cache.delete(oldestKey)
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}
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}
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/**
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* 获取数据库根目录
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*/
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private getDbPath(): string {
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return this.configService.get('dbPath') || ''
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}
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/**
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* 获取当前用户的wxid
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*/
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private getMyWxid(): string {
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return this.configService.get('myWxid') || ''
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}
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/**
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* 清理 wxid 目录名（去掉后缀）
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*/
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private cleanWxid(wxid: string): string {
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const trimmed = wxid.trim()
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if (!trimmed) return trimmed
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if (trimmed.toLowerCase().startsWith('wxid_')) {
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const match = trimmed.match(/^(wxid_[^_]+)/i)
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if (match) return match[1]
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return trimmed
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}
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const suffixMatch = trimmed.match(/^(.+)_([a-zA-Z0-9]{4})$/)
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if (suffixMatch) return suffixMatch[1]
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return trimmed
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}
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private getScopeKey(dbPath: string, wxid: string): string {
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return `${dbPath}::${this.cleanWxid(wxid)}`.toLowerCase()
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}
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private resolveVideoBaseDir(dbPath: string, wxid: string): string {
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const cleanedWxid = this.cleanWxid(wxid)
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const dbPathLower = dbPath.toLowerCase()
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const wxidLower = wxid.toLowerCase()
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const cleanedWxidLower = cleanedWxid.toLowerCase()
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const dbPathContainsWxid = dbPathLower.includes(wxidLower) || dbPathLower.includes(cleanedWxidLower)
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if (dbPathContainsWxid) {
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return join(dbPath, 'msg', 'video')
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}
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return join(dbPath, wxid, 'msg', 'video')
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}
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private getHardlinkDbPaths(dbPath: string, wxid: string, cleanedWxid: string): string[] {
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const dbPathLower = dbPath.toLowerCase()
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const wxidLower = wxid.toLowerCase()
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const cleanedWxidLower = cleanedWxid.toLowerCase()
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const dbPathContainsWxid = dbPathLower.includes(wxidLower) || dbPathLower.includes(cleanedWxidLower)
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if (dbPathContainsWxid) {
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return [join(dbPath, 'db_storage', 'hardlink', 'hardlink.db')]
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}
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return [
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join(dbPath, wxid, 'db_storage', 'hardlink', 'hardlink.db'),
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join(dbPath, cleanedWxid, 'db_storage', 'hardlink', 'hardlink.db')
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]
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}
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/**
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* 从 video_hardlink_info_v4 表查询视频文件名
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* 使用 wcdb 专属接口查询加密的 hardlink.db
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*/
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private async resolveVideoHardlinks(
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md5List: string[],
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dbPath: string,
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wxid: string,
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cleanedWxid: string
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): Promise<Map<string, string>> {
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const scopeKey = this.getScopeKey(dbPath, wxid)
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const normalizedList = Array.from(
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new Set((md5List || []).map((item) => String(item || '').trim().toLowerCase()).filter(Boolean))
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)
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const resolvedMap = new Map<string, string>()
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const unresolvedSet = new Set(normalizedList)
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for (const md5 of normalizedList) {
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const cacheKey = `${scopeKey}|${md5}`
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const cached = this.readTimedCache(this.hardlinkResolveCache, cacheKey)
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if (cached === undefined) continue
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if (cached) resolvedMap.set(md5, cached)
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unresolvedSet.delete(md5)
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}
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if (unresolvedSet.size === 0) return resolvedMap
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const encryptedDbPaths = this.getHardlinkDbPaths(dbPath, wxid, cleanedWxid)
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for (const p of encryptedDbPaths) {
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if (!existsSync(p) || unresolvedSet.size === 0) continue
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const unresolved = Array.from(unresolvedSet)
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const requests = unresolved.map((md5) => ({ md5, dbPath: p }))
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try {
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const batchResult = await wcdbService.resolveVideoHardlinkMd5Batch(requests)
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if (batchResult.success && Array.isArray(batchResult.rows)) {
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for (const row of batchResult.rows) {
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const index = Number.isFinite(Number(row?.index)) ? Math.floor(Number(row?.index)) : -1
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const inputMd5 = index >= 0 && index < requests.length
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? requests[index].md5
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: String(row?.md5 || '').trim().toLowerCase()
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if (!inputMd5) continue
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const resolvedMd5 = row?.success && row?.data?.resolved_md5
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? String(row.data.resolved_md5).trim().toLowerCase()
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: ''
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if (!resolvedMd5) continue
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const cacheKey = `${scopeKey}|${inputMd5}`
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this.writeTimedCache(this.hardlinkResolveCache, cacheKey, resolvedMd5, this.hardlinkCacheTtlMs, this.maxCacheEntries)
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resolvedMap.set(inputMd5, resolvedMd5)
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unresolvedSet.delete(inputMd5)
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}
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} else {
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// 兼容不支持批量接口的版本，回退单条请求。
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for (const req of requests) {
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try {
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const single = await wcdbService.resolveVideoHardlinkMd5(req.md5, req.dbPath)
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const resolvedMd5 = single.success && single.data?.resolved_md5
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? String(single.data.resolved_md5).trim().toLowerCase()
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: ''
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if (!resolvedMd5) continue
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const cacheKey = `${scopeKey}|${req.md5}`
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this.writeTimedCache(this.hardlinkResolveCache, cacheKey, resolvedMd5, this.hardlinkCacheTtlMs, this.maxCacheEntries)
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resolvedMap.set(req.md5, resolvedMd5)
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unresolvedSet.delete(req.md5)
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} catch { }
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}
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}
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} catch (e) {
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this.log('resolveVideoHardlinks 批量查询失败', { path: p, error: String(e) })
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}
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}
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for (const md5 of unresolvedSet) {
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const cacheKey = `${scopeKey}|${md5}`
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this.writeTimedCache(this.hardlinkResolveCache, cacheKey, null, this.hardlinkCacheTtlMs, this.maxCacheEntries)
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}
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return resolvedMap
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}
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private async queryVideoFileName(md5: string): Promise<string | undefined> {
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const normalizedMd5 = String(md5 || '').trim().toLowerCase()
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const dbPath = this.getDbPath()
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const wxid = this.getMyWxid()
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const cleanedWxid = this.cleanWxid(wxid)
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this.log('queryVideoFileName 开始', { md5: normalizedMd5, wxid, cleanedWxid, dbPath })
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if (!normalizedMd5 || !wxid || !dbPath) {
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this.log('queryVideoFileName: 参数缺失', { hasMd5: !!normalizedMd5, hasWxid: !!wxid, hasDbPath: !!dbPath })
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return undefined
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}
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const resolvedMap = await this.resolveVideoHardlinks([normalizedMd5], dbPath, wxid, cleanedWxid)
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const resolved = resolvedMap.get(normalizedMd5)
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if (resolved) {
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this.log('queryVideoFileName 命中', { input: normalizedMd5, resolved })
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return resolved
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}
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return undefined
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}
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async preloadVideoHardlinkMd5s(md5List: string[]): Promise<void> {
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const dbPath = this.getDbPath()
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const wxid = this.getMyWxid()
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const cleanedWxid = this.cleanWxid(wxid)
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if (!dbPath || !wxid) return
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await this.resolveVideoHardlinks(md5List, dbPath, wxid, cleanedWxid)
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}
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/**
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* 将文件转换为 data URL
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*/
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private fileToDataUrl(filePath: string | undefined, mimeType: string): string | undefined {
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try {
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if (!filePath || !existsSync(filePath)) return undefined
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const buffer = readFileSync(filePath)
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return `data:${mimeType};base64,${buffer.toString('base64')}`
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} catch {
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return undefined
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}
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}
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private getOrBuildVideoIndex(videoBaseDir: string): Map<string, VideoIndexEntry> {
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const cached = this.readTimedCache(this.videoDirIndexCache, videoBaseDir)
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if (cached) return cached
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const index = new Map<string, VideoIndexEntry>()
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const ensureEntry = (key: string): VideoIndexEntry => {
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let entry = index.get(key)
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if (!entry) {
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entry = {}
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index.set(key, entry)
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}
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return entry
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}
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try {
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const yearMonthDirs = readdirSync(videoBaseDir)
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.filter((dir) => {
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const dirPath = join(videoBaseDir, dir)
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try {
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return statSync(dirPath).isDirectory()
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} catch {
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return false
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}
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})
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.sort((a, b) => b.localeCompare(a))
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for (const yearMonth of yearMonthDirs) {
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const dirPath = join(videoBaseDir, yearMonth)
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let files: string[] = []
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try {
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files = readdirSync(dirPath)
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} catch {
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continue
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}
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for (const file of files) {
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const lower = file.toLowerCase()
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const fullPath = join(dirPath, file)
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if (lower.endsWith('.mp4')) {
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const md5 = lower.slice(0, -4)
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const entry = ensureEntry(md5)
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if (!entry.videoPath) entry.videoPath = fullPath
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if (md5.endsWith('_raw')) {
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const baseMd5 = md5.replace(/_raw$/, '')
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const baseEntry = ensureEntry(baseMd5)
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if (!baseEntry.videoPath) baseEntry.videoPath = fullPath
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}
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continue
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}
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if (!lower.endsWith('.jpg')) continue
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const jpgBase = lower.slice(0, -4)
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if (jpgBase.endsWith('_thumb')) {
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const baseMd5 = jpgBase.slice(0, -6)
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const entry = ensureEntry(baseMd5)
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if (!entry.thumbPath) entry.thumbPath = fullPath
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} else {
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const entry = ensureEntry(jpgBase)
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if (!entry.coverPath) entry.coverPath = fullPath
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}
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}
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}
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for (const [key, entry] of index) {
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if (!key.endsWith('_raw')) continue
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const baseKey = key.replace(/_raw$/, '')
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const baseEntry = index.get(baseKey)
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if (!baseEntry) continue
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if (!entry.coverPath) entry.coverPath = baseEntry.coverPath
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if (!entry.thumbPath) entry.thumbPath = baseEntry.thumbPath
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}
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} catch (e) {
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this.log('构建视频索引失败', { videoBaseDir, error: String(e) })
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}
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this.writeTimedCache(
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this.videoDirIndexCache,
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videoBaseDir,
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index,
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this.videoIndexCacheTtlMs,
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this.maxIndexEntries
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)
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return index
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}
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private getVideoInfoFromIndex(index: Map<string, VideoIndexEntry>, md5: string): VideoInfo | null {
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const normalizedMd5 = String(md5 || '').trim().toLowerCase()
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if (!normalizedMd5) return null
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const candidates = [normalizedMd5]
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const baseMd5 = normalizedMd5.replace(/_raw$/, '')
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if (baseMd5 !== normalizedMd5) {
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candidates.push(baseMd5)
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} else {
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candidates.push(`${normalizedMd5}_raw`)
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}
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for (const key of candidates) {
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const entry = index.get(key)
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if (!entry?.videoPath) continue
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if (!existsSync(entry.videoPath)) continue
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return {
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videoUrl: entry.videoPath,
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coverUrl: this.fileToDataUrl(entry.coverPath, 'image/jpeg'),
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thumbUrl: this.fileToDataUrl(entry.thumbPath, 'image/jpeg'),
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exists: true
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}
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}
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return null
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}
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private fallbackScanVideo(videoBaseDir: string, realVideoMd5: string): VideoInfo | null {
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try {
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const yearMonthDirs = readdirSync(videoBaseDir)
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.filter((dir) => {
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const dirPath = join(videoBaseDir, dir)
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try {
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return statSync(dirPath).isDirectory()
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} catch {
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return false
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}
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})
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.sort((a, b) => b.localeCompare(a))
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for (const yearMonth of yearMonthDirs) {
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const dirPath = join(videoBaseDir, yearMonth)
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const videoPath = join(dirPath, `${realVideoMd5}.mp4`)
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if (!existsSync(videoPath)) continue
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const baseMd5 = realVideoMd5.replace(/_raw$/, '')
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const coverPath = join(dirPath, `${baseMd5}.jpg`)
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const thumbPath = join(dirPath, `${baseMd5}_thumb.jpg`)
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return {
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videoUrl: videoPath,
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coverUrl: this.fileToDataUrl(coverPath, 'image/jpeg'),
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thumbUrl: this.fileToDataUrl(thumbPath, 'image/jpeg'),
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exists: true
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}
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}
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} catch (e) {
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this.log('fallback 扫描视频目录失败', { error: String(e) })
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}
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return null
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}
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/**
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* 根据视频MD5获取视频文件信息
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* 视频存放在: {数据库根目录}/{用户wxid}/msg/video/{年月}/
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* 文件命名: {md5}.mp4, {md5}.jpg, {md5}_thumb.jpg
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*/
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async getVideoInfo(videoMd5: string): Promise<VideoInfo> {
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const normalizedMd5 = String(videoMd5 || '').trim().toLowerCase()
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const dbPath = this.getDbPath()
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const wxid = this.getMyWxid()
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this.log('getVideoInfo 开始', { videoMd5: normalizedMd5, dbPath, wxid })
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if (!dbPath || !wxid || !normalizedMd5) {
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this.log('getVideoInfo: 参数缺失', { hasDbPath: !!dbPath, hasWxid: !!wxid, hasVideoMd5: !!normalizedMd5 })
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return { exists: false }
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}
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const scopeKey = this.getScopeKey(dbPath, wxid)
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const cacheKey = `${scopeKey}|${normalizedMd5}`
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const cachedInfo = this.readTimedCache(this.videoInfoCache, cacheKey)
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if (cachedInfo) return cachedInfo
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const pending = this.pendingVideoInfo.get(cacheKey)
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if (pending) return pending
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const task = (async (): Promise<VideoInfo> => {
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const realVideoMd5 = await this.queryVideoFileName(normalizedMd5) || normalizedMd5
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const videoBaseDir = this.resolveVideoBaseDir(dbPath, wxid)
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if (!existsSync(videoBaseDir)) {
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const miss = { exists: false }
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this.writeTimedCache(this.videoInfoCache, cacheKey, miss, this.videoInfoCacheTtlMs, this.maxCacheEntries)
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return miss
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}
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const index = this.getOrBuildVideoIndex(videoBaseDir)
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const indexed = this.getVideoInfoFromIndex(index, realVideoMd5)
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if (indexed) {
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this.writeTimedCache(this.videoInfoCache, cacheKey, indexed, this.videoInfoCacheTtlMs, this.maxCacheEntries)
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return indexed
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}
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const fallback = this.fallbackScanVideo(videoBaseDir, realVideoMd5)
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if (fallback) {
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this.writeTimedCache(this.videoInfoCache, cacheKey, fallback, this.videoInfoCacheTtlMs, this.maxCacheEntries)
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return fallback
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}
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const miss = { exists: false }
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this.writeTimedCache(this.videoInfoCache, cacheKey, miss, this.videoInfoCacheTtlMs, this.maxCacheEntries)
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this.log('getVideoInfo: 未找到视频', { inputMd5: normalizedMd5, resolvedMd5: realVideoMd5 })
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return miss
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})()
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this.pendingVideoInfo.set(cacheKey, task)
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try {
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return await task
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} finally {
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this.pendingVideoInfo.delete(cacheKey)
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}
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}
|
||
|
||
/**
|
||
* 根据消息内容解析视频MD5
|
||
*/
|
||
parseVideoMd5(content: string): string | undefined {
|
||
if (!content) return undefined
|
||
|
||
// 打印原始 XML 前 800 字符，帮助排查自己发的视频结构
|
||
this.log('parseVideoMd5 原始内容', { preview: content.slice(0, 800) })
|
||
|
||
try {
|
||
// 收集所有 md5 相关属性，方便对比
|
||
const allMd5Attrs: string[] = []
|
||
const md5Regex = /(?:md5|rawmd5|newmd5|originsourcemd5)\s*=\s*['"]([a-fA-F0-9]*)['"]/gi
|
||
let match
|
||
while ((match = md5Regex.exec(content)) !== null) {
|
||
allMd5Attrs.push(match[0])
|
||
}
|
||
this.log('parseVideoMd5 所有 md5 属性', { attrs: allMd5Attrs })
|
||
|
||
// 方法1：从 <videomsg md5="..."> 提取（收到的视频）
|
||
const videoMsgMd5Match = /<videomsg[^>]*\smd5\s*=\s*['"]([a-fA-F0-9]+)['"]/i.exec(content)
|
||
if (videoMsgMd5Match) {
|
||
this.log('parseVideoMd5 命中 videomsg md5 属性', { md5: videoMsgMd5Match[1] })
|
||
return videoMsgMd5Match[1].toLowerCase()
|
||
}
|
||
|
||
// 方法2：从 <videomsg rawmd5="..."> 提取（自己发的视频，没有 md5 只有 rawmd5）
|
||
const rawMd5Match = /<videomsg[^>]*\srawmd5\s*=\s*['"]([a-fA-F0-9]+)['"]/i.exec(content)
|
||
if (rawMd5Match) {
|
||
this.log('parseVideoMd5 命中 videomsg rawmd5 属性（自发视频）', { rawmd5: rawMd5Match[1] })
|
||
return rawMd5Match[1].toLowerCase()
|
||
}
|
||
|
||
// 方法3：任意属性 md5="..."（非 rawmd5/cdnthumbaeskey 等）
|
||
const attrMatch = /(?<![a-z])md5\s*=\s*['"]([a-fA-F0-9]+)['"]/i.exec(content)
|
||
if (attrMatch) {
|
||
this.log('parseVideoMd5 命中通用 md5 属性', { md5: attrMatch[1] })
|
||
return attrMatch[1].toLowerCase()
|
||
}
|
||
|
||
// 方法4：<md5>...</md5> 标签
|
||
const md5TagMatch = /<md5>([a-fA-F0-9]+)<\/md5>/i.exec(content)
|
||
if (md5TagMatch) {
|
||
this.log('parseVideoMd5 命中 md5 标签', { md5: md5TagMatch[1] })
|
||
return md5TagMatch[1].toLowerCase()
|
||
}
|
||
|
||
// 方法5：兜底取 rawmd5 属性（任意位置）
|
||
const rawMd5Fallback = /\srawmd5\s*=\s*['"]([a-fA-F0-9]+)['"]/i.exec(content)
|
||
if (rawMd5Fallback) {
|
||
this.log('parseVideoMd5 兜底命中 rawmd5', { rawmd5: rawMd5Fallback[1] })
|
||
return rawMd5Fallback[1].toLowerCase()
|
||
}
|
||
|
||
this.log('parseVideoMd5 未提取到任何 md5', { contentLength: content.length })
|
||
} catch (e) {
|
||
this.log('parseVideoMd5 异常', { error: String(e) })
|
||
}
|
||
|
||
return undefined
|
||
}
|
||
}
|
||
|
||
export const videoService = new VideoService()
|