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cc committed 2026-06-03 19:13:07 +08:00
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electron/services/messagePushService.ts
-1459
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import { ConfigService } from './config'
import { chatService, type ChatSession, type Message } from './chatService'
import { wcdbService } from './wcdbService'
import { httpService } from './httpService'
import { promises as fs } from 'fs'
import path from 'path'
import { createHash } from 'crypto'
import { pathToFileURL } from 'url'
interface SessionBaseline {
lastTimestamp: number
unreadCount: number
}
interface PushSessionResult {
fetched: boolean
maxFetchedTimestamp: number
incomingCandidateCount: number
observedIncomingCount: number
expectedIncomingCount: number
retry: boolean
}
interface PushSessionOptions {
scanRecentRevokes?: boolean
}
type MessagePushEventName = 'message.new' | 'message.revoke'
interface MessagePushPayload {
event: MessagePushEventName
sessionId: string
sessionType: 'private' | 'group' | 'official' | 'other'
rawid: string
avatarUrl?: string
sourceName: string
groupName?: string
content: string | null
timestamp: number
}
const PUSH_CONFIG_KEYS = new Set([
'messagePushEnabled',
'messagePushFilterMode',
'messagePushFilterList',
'dbPath',
'decryptKey',
'myWxid'
])
class MessagePushService {
private readonly configService: ConfigService
private readonly sessionBaseline = new Map<string, SessionBaseline>()
private readonly recentMessageKeys = new Map<string, number>()
private readonly seenMessageKeys = new Map<string, number>()
private readonly recentlyRevokedOriginalTokens = new Map<string, number>()
private readonly seenPrimedSessions = new Set<string>()
private readonly groupNicknameCache = new Map<string, { nicknames: Record<string, string>; updatedAt: number }>()
private readonly pushAvatarCacheDir: string
private readonly pushAvatarDataCache = new Map<string, string>()
private readonly debounceMs = 350
private readonly lookbackSeconds = 2
private readonly recentMessageTtlMs = 10 * 60 * 1000
private readonly groupNicknameCacheTtlMs = 5 * 60 * 1000
private readonly messageTableRescanDelayMs = 500
private readonly recentRevokeScanSeconds = 150
private readonly directRevokeScanLimit = 20
private debounceTimer: ReturnType<typeof setTimeout> | null = null
private messageTableRescanTimer: ReturnType<typeof setTimeout> | null = null
private processing = false
private rerunRequested = false
private started = false
private baselineReady = false
private messageTableScanRequested = false
private readonly pendingMessageTableNames = new Set<string>()
constructor() {
this.configService = ConfigService.getInstance()
this.pushAvatarCacheDir = path.join(this.configService.getCacheBasePath(), 'push-avatar-files')
}
start(): void {
if (this.started) return
this.started = true
void this.refreshConfiguration('startup')
}
stop(): void {
this.started = false
this.processing = false
this.rerunRequested = false
this.resetRuntimeState()
}
handleDbMonitorChange(type: string, json: string): void {
if (!this.started) return
if (!this.isPushEnabled()) return
let payload: Record<string, unknown> | null = null
try {
payload = JSON.parse(json)
} catch {
payload = null
}
const tableName = String(payload?.table || '').trim()
const messageTableNames = this.collectMessageTableNamesFromPayload(payload)
if (this.isSessionTableChange(tableName)) {
this.scheduleSync()
return
}
if (!tableName && messageTableNames.length === 0) {
this.scheduleSync()
return
}
if (this.isMessageTableChange(tableName) || messageTableNames.length > 0) {
this.scheduleSync({
scanMessageBackedSessions: true,
messageTableNames
})
this.scheduleMessageTableRescan(messageTableNames)
}
}
async handleConfigChanged(key: string): Promise<void> {
if (!PUSH_CONFIG_KEYS.has(String(key || '').trim())) return
if (key === 'dbPath' || key === 'decryptKey' || key === 'myWxid') {
this.resetRuntimeState()
chatService.close()
}
await this.refreshConfiguration(`config:${key}`)
}
handleConfigCleared(): void {
this.resetRuntimeState()
chatService.close()
}
private isPushEnabled(): boolean {
return this.configService.get('messagePushEnabled') === true
}
private resetRuntimeState(): void {
this.sessionBaseline.clear()
this.recentMessageKeys.clear()
this.seenMessageKeys.clear()
this.recentlyRevokedOriginalTokens.clear()
this.seenPrimedSessions.clear()
this.groupNicknameCache.clear()
this.baselineReady = false
this.messageTableScanRequested = false
this.pendingMessageTableNames.clear()
if (this.debounceTimer) {
clearTimeout(this.debounceTimer)
this.debounceTimer = null
}
if (this.messageTableRescanTimer) {
clearTimeout(this.messageTableRescanTimer)
this.messageTableRescanTimer = null
}
}
private async refreshConfiguration(reason: string): Promise<void> {
if (!this.isPushEnabled()) {
this.resetRuntimeState()
return
}
const connectResult = await chatService.connect()
if (!connectResult.success) {
console.warn(`[MessagePushService] Bootstrap connect failed (${reason}):`, connectResult.error)
return
}
await this.bootstrapBaseline()
}
private async bootstrapBaseline(): Promise<void> {
const sessionsResult = await chatService.getSessions()
if (!sessionsResult.success || !sessionsResult.sessions) {
return
}
this.setBaseline(sessionsResult.sessions as ChatSession[])
this.baselineReady = true
}
private scheduleSync(options: { scanMessageBackedSessions?: boolean; messageTableNames?: string[] } = {}): void {
if (options.scanMessageBackedSessions) {
this.messageTableScanRequested = true
}
for (const tableName of options.messageTableNames || []) {
const normalized = String(tableName || '').trim()
if (normalized) this.pendingMessageTableNames.add(normalized)
}
if (this.debounceTimer) {
clearTimeout(this.debounceTimer)
}
this.debounceTimer = setTimeout(() => {
this.debounceTimer = null
void this.flushPendingChanges()
}, this.debounceMs)
}
private scheduleMessageTableRescan(messageTableNames: string[]): void {
if (this.messageTableRescanTimer) {
clearTimeout(this.messageTableRescanTimer)
}
const tableNames = [...messageTableNames]
this.messageTableRescanTimer = setTimeout(() => {
this.messageTableRescanTimer = null
if (!this.started || !this.isPushEnabled()) return
this.scheduleSync({
scanMessageBackedSessions: true,
messageTableNames: tableNames
})
}, this.messageTableRescanDelayMs)
}
private async flushPendingChanges(): Promise<void> {
if (this.processing) {
this.rerunRequested = true
return
}
this.processing = true
try {
if (!this.isPushEnabled()) return
const scanMessageBackedSessions = this.messageTableScanRequested
this.messageTableScanRequested = false
const pendingMessageTableNames = Array.from(this.pendingMessageTableNames)
this.pendingMessageTableNames.clear()
const connectResult = await chatService.connect()
if (!connectResult.success) {
console.warn('[MessagePushService] Sync connect failed:', connectResult.error)
return
}
const sessionsResult = await chatService.getSessions()
if (!sessionsResult.success || !sessionsResult.sessions) {
return
}
const sessions = sessionsResult.sessions as ChatSession[]
if (!this.baselineReady) {
this.setBaseline(sessions)
this.baselineReady = true
return
}
const previousBaseline = new Map(this.sessionBaseline)
const messageTableTargetSessionIds = this.resolveMessageTableTargetSessionIds(sessions, pendingMessageTableNames)
const candidates = sessions.filter((session) => {
const sessionId = String(session.username || '').trim()
const previous = previousBaseline.get(session.username)
if (sessionId && messageTableTargetSessionIds.has(sessionId)) {
return true
}
if (this.shouldInspectSession(previous, session)) {
return true
}
return scanMessageBackedSessions && this.shouldScanMessageBackedSession(previous, session)
})
const candidateIds = new Set<string>()
for (const session of candidates) {
const sessionId = String(session.username || '').trim()
if (sessionId) candidateIds.add(sessionId)
const previous = previousBaseline.get(session.username) || this.sessionBaseline.get(session.username)
const scanRecentRevokes = this.hasUnreadCountDecreased(previous, session) ||
(this.hasUnreadCountChanged(previous, session) && this.isRevokeSessionSummary(session)) ||
(Boolean(sessionId) && messageTableTargetSessionIds.has(sessionId))
const result = await this.pushSessionMessages(
session,
previous,
{ scanRecentRevokes }
)
this.updateInspectedBaseline(session, previousBaseline.get(session.username), result)
if (result.retry) {
this.rerunRequested = true
}
}
for (const session of sessions) {
const sessionId = String(session.username || '').trim()
if (!sessionId || candidateIds.has(sessionId)) continue
this.updateObservedBaseline(session, previousBaseline.get(sessionId))
}
} finally {
this.processing = false
if (this.rerunRequested) {
this.rerunRequested = false
this.scheduleSync({ scanMessageBackedSessions: this.messageTableScanRequested })
}
}
}
private setBaseline(sessions: ChatSession[]): void {
const previousBaseline = new Map(this.sessionBaseline)
const nextBaseline = new Map<string, SessionBaseline>()
const nowSeconds = Math.floor(Date.now() / 1000)
this.sessionBaseline.clear()
for (const session of sessions) {
const username = String(session.username || '').trim()
if (!username) continue
const previous = previousBaseline.get(username)
const sessionTimestamp = Number(session.lastTimestamp || 0)
const initialTimestamp = sessionTimestamp > 0 ? sessionTimestamp : nowSeconds
nextBaseline.set(username, {
lastTimestamp: Math.max(sessionTimestamp, Number(previous?.lastTimestamp || 0), previous ? 0 : initialTimestamp),
unreadCount: Number(session.unreadCount || 0)
})
}
for (const [username, baseline] of nextBaseline.entries()) {
this.sessionBaseline.set(username, baseline)
}
}
private updateObservedBaseline(session: ChatSession, previous: SessionBaseline | undefined): void {
const username = String(session.username || '').trim()
if (!username) return
const sessionTimestamp = Number(session.lastTimestamp || 0)
const previousTimestamp = Number(previous?.lastTimestamp || 0)
this.sessionBaseline.set(username, {
lastTimestamp: Math.max(sessionTimestamp, previousTimestamp),
unreadCount: Number(session.unreadCount ?? previous?.unreadCount ?? 0)
})
}
private updateInspectedBaseline(
session: ChatSession,
previous: SessionBaseline | undefined,
result: PushSessionResult
): void {
const username = String(session.username || '').trim()
if (!username) return
const previousTimestamp = Number(previous?.lastTimestamp || 0)
const current = this.sessionBaseline.get(username) || previous || { lastTimestamp: 0, unreadCount: 0 }
const nextTimestamp = result.retry
? previousTimestamp
: Math.max(previousTimestamp, current.lastTimestamp, result.maxFetchedTimestamp)
this.sessionBaseline.set(username, {
lastTimestamp: nextTimestamp,
unreadCount: result.retry
? Number(previous?.unreadCount || 0)
: Number(session.unreadCount || 0)
})
}
private shouldInspectSession(previous: SessionBaseline | undefined, session: ChatSession): boolean {
const sessionId = String(session.username || '').trim()
if (!sessionId || sessionId.toLowerCase().includes('placeholder_foldgroup')) {
return false
}
const lastTimestamp = Number(session.lastTimestamp || 0)
const unreadCount = Number(session.unreadCount || 0)
if (!previous) {
return unreadCount > 0 && lastTimestamp > 0
}
if (this.isRevokeSessionSummary(session) && lastTimestamp >= previous.lastTimestamp) {
return true
}
return lastTimestamp > previous.lastTimestamp || unreadCount !== previous.unreadCount
}
private hasUnreadCountChanged(previous: SessionBaseline | undefined, session: ChatSession): boolean {
if (!previous) return false
return Number(session.unreadCount || 0) !== Number(previous.unreadCount || 0)
}
private hasUnreadCountDecreased(previous: SessionBaseline | undefined, session: ChatSession): boolean {
if (!previous) return false
return Number(session.unreadCount || 0) < Number(previous.unreadCount || 0)
}
private shouldScanMessageBackedSession(previous: SessionBaseline | undefined, session: ChatSession): boolean {
const sessionId = String(session.username || '').trim()
if (!sessionId || sessionId.toLowerCase().includes('placeholder_foldgroup')) {
return false
}
const sessionType = this.getSessionType(sessionId, session)
if (sessionType === 'private' && !this.isRevokeSessionSummary(session)) {
return false
}
return Boolean(previous) || Number(session.lastTimestamp || 0) > 0
}
private async pushSessionMessages(
session: ChatSession,
previous: SessionBaseline | undefined,
options: PushSessionOptions = {}
): Promise<PushSessionResult> {
const previousTimestamp = Math.max(0, Number(previous?.lastTimestamp || 0))
const previousUnreadCount = Math.max(0, Number(previous?.unreadCount || 0))
const currentUnreadCount = Math.max(0, Number(session.unreadCount || 0))
const expectedIncomingCount = previous
? Math.max(0, currentUnreadCount - previousUnreadCount)
: 0
const since = previous
? Math.max(0, previousTimestamp - this.lookbackSeconds)
: 0
const newMessagesResult = await chatService.getNewMessages(session.username, since, 1000)
const fetchedMessages = newMessagesResult.success && Array.isArray(newMessagesResult.messages)
? newMessagesResult.messages
: []
if (fetchedMessages.length === 0 && !options.scanRecentRevokes) {
return {
fetched: false,
maxFetchedTimestamp: previousTimestamp,
incomingCandidateCount: 0,
observedIncomingCount: 0,
expectedIncomingCount,
retry: expectedIncomingCount > 0
}
}
const sessionId = String(session.username || '').trim()
const maxFetchedTimestamp = fetchedMessages.reduce((max, message) => {
const createTime = Number(message.createTime || 0)
return Number.isFinite(createTime) && createTime > max ? createTime : max
}, previousTimestamp)
const seenPrimed = sessionId ? this.seenPrimedSessions.has(sessionId) : false
const sameTimestampIncoming: Message[] = []
const candidateMessages: Message[] = []
let observedIncomingCount = 0
for (const message of fetchedMessages) {
const messageKey = String(message.messageKey || '').trim()
if (!messageKey) continue
const createTime = Number(message.createTime || 0)
const seen = this.isSeenMessage(messageKey)
const recent = this.isRecentMessage(messageKey)
const revokeMessage = this.isRevokeSystemMessage(message)
if (message.isSend !== 1) {
if (!previous || createTime > previousTimestamp || (seenPrimed && createTime === previousTimestamp)) {
observedIncomingCount += 1
}
}
if (previous && !seenPrimed && createTime < previousTimestamp) {
if (revokeMessage && !recent) {
candidateMessages.push(message)
continue
}
this.rememberSeenMessageKey(messageKey)
continue
}
if (seen || recent) {
if (seen && !recent && revokeMessage) {
candidateMessages.push(message)
}
continue
}
if (message.isSend === 1) continue
if (previous && !seenPrimed && createTime === previousTimestamp) {
if (revokeMessage) {
candidateMessages.push(message)
} else {
sameTimestampIncoming.push(message)
}
continue
}
candidateMessages.push(message)
}
const futureIncomingCount = candidateMessages.filter((message) => {
const createTime = Number(message.createTime || 0)
return !previous || createTime > previousTimestamp || seenPrimed
}).length
const sameTimestampAllowance = previous && !seenPrimed
? Math.max(0, expectedIncomingCount - futureIncomingCount)
: 0
const selectedSameTimestamp = sameTimestampAllowance > 0
? sameTimestampIncoming.slice(-sameTimestampAllowance)
: []
const messagesToPush = [...selectedSameTimestamp, ...candidateMessages]
const suppressedNormalMessageKeys = this.collectSuppressedNormalMessageKeys(messagesToPush, fetchedMessages)
const incomingCandidateCount = messagesToPush.length
for (const message of messagesToPush) {
const messageKey = String(message.messageKey || '').trim()
if (!messageKey) continue
if (!this.isRevokeSystemMessage(message) && suppressedNormalMessageKeys.has(messageKey)) {
this.rememberMessageKey(messageKey)
continue
}
if (!this.isRevokeSystemMessage(message) && this.isRecentlyRevokedOriginal(session.username, message)) {
this.rememberMessageKey(messageKey)
this.rememberSeenMessageKey(messageKey)
continue
}
const payload = this.isRevokeSystemMessage(message)
? await this.buildRevokePayload(session, message, fetchedMessages)
: await this.buildPayload(session, message)
if (!payload) continue
if (!this.shouldPushPayload(payload)) continue
httpService.broadcastMessagePush(payload)
this.rememberMessageKey(messageKey)
this.bumpSessionBaseline(session.username, message)
}
for (const message of fetchedMessages) {
const messageKey = String(message.messageKey || '').trim()
if (messageKey) this.rememberSeenMessageKey(messageKey)
}
if (sessionId) this.seenPrimedSessions.add(sessionId)
const recentRevokeResult = options.scanRecentRevokes
? await this.pushRecentRevokeMessages(session, previous, fetchedMessages)
: { pushedCount: 0, maxPushedTimestamp: 0 }
return {
fetched: true,
maxFetchedTimestamp: Math.max(maxFetchedTimestamp, recentRevokeResult.maxPushedTimestamp),
incomingCandidateCount: incomingCandidateCount + recentRevokeResult.pushedCount,
observedIncomingCount,
expectedIncomingCount,
retry: expectedIncomingCount > 0 && observedIncomingCount < expectedIncomingCount
}
}
private async pushRecentRevokeMessages(
session: ChatSession,
previous: SessionBaseline | undefined,
contextMessages: Message[]
): Promise<{ pushedCount: number; maxPushedTimestamp: number }> {
const sessionId = String(session.username || '').trim()
if (!sessionId) return { pushedCount: 0, maxPushedTimestamp: 0 }
const since = this.getRecentRevokeScanSince(session, previous)
const revokeMessages = await this.getRecentRevokeMessagesFromTables(sessionId, since)
if (revokeMessages.length === 0) {
return { pushedCount: 0, maxPushedTimestamp: 0 }
}
const mergedMessages = this.mergeMessagesForRevokeLookup(contextMessages, revokeMessages)
let pushedCount = 0
let maxPushedTimestamp = 0
for (const message of revokeMessages) {
const messageKey = String(message.messageKey || '').trim()
if (!messageKey || !this.isRevokeSystemMessage(message)) continue
if (this.isRecentMessage(messageKey)) continue
const payload = await this.buildRevokePayload(session, message, mergedMessages)
if (!payload) continue
if (!this.shouldPushPayload(payload)) continue
httpService.broadcastMessagePush(payload)
this.rememberMessageKey(messageKey)
this.rememberSeenMessageKey(messageKey)
this.bumpSessionBaseline(sessionId, message)
pushedCount += 1
const createTime = Number(message.createTime || 0)
if (Number.isFinite(createTime) && createTime > maxPushedTimestamp) {
maxPushedTimestamp = createTime
}
}
return { pushedCount, maxPushedTimestamp }
}
private getRecentRevokeScanSince(session: ChatSession, previous: SessionBaseline | undefined): number {
const nowSeconds = Math.floor(Date.now() / 1000)
const anchor = Math.max(
nowSeconds,
Number(session.lastTimestamp || 0),
Number(previous?.lastTimestamp || 0)
)
return Math.max(0, anchor - this.recentRevokeScanSeconds)
}
private async getRecentRevokeMessagesFromTables(sessionId: string, since: number): Promise<Message[]> {
const tables = await this.getCandidateMessageTables(sessionId, since)
if (tables.length === 0) return []
const messages: Message[] = []
const sinceSeconds = this.toSafeSqlInteger(since)
for (const table of tables) {
const sql = [
`SELECT *, '${this.escapeSqlString(table.dbPath)}' AS _db_path, '${this.escapeSqlString(table.tableName)}' AS table_name`,
`FROM ${this.quoteSqlIdentifier(table.tableName)}`,
`WHERE create_time >= ${sinceSeconds}`,
`AND (local_type IN (10000, 10002) OR message_content LIKE '%撤回%' OR message_content LIKE '%revokemsg%' OR message_content LIKE '%<replacemsg%' OR compress_content LIKE '%撤回%' OR compress_content LIKE '%revokemsg%')`,
`ORDER BY create_time ASC, sort_seq ASC, local_id ASC`,
`LIMIT ${this.directRevokeScanLimit}`
].join(' ')
const result = await wcdbService.execQuery('message', table.dbPath, sql)
if (!result.success || !Array.isArray(result.rows) || result.rows.length === 0) continue
messages.push(...chatService.mapRowsToMessagesForApi(result.rows as Record<string, any>[]))
}
return messages
.filter((message) => this.isRevokeSystemMessage(message))
.sort((left, right) => this.compareMessagePosition(left, right))
}
private async getRecentRevokeContextMessages(sessionId: string, since: number): Promise<Message[]> {
const tables = await this.getCandidateMessageTables(sessionId, since)
if (tables.length === 0) return []
const messages: Message[] = []
const sinceSeconds = this.toSafeSqlInteger(since)
for (const table of tables) {
const sql = [
`SELECT *, '${this.escapeSqlString(table.dbPath)}' AS _db_path, '${this.escapeSqlString(table.tableName)}' AS table_name`,
`FROM ${this.quoteSqlIdentifier(table.tableName)}`,
`WHERE create_time >= ${sinceSeconds}`,
`ORDER BY create_time ASC, sort_seq ASC, local_id ASC`,
`LIMIT ${this.directRevokeScanLimit * 4}`
].join(' ')
const result = await wcdbService.execQuery('message', table.dbPath, sql)
if (!result.success || !Array.isArray(result.rows) || result.rows.length === 0) continue
messages.push(...chatService.mapRowsToMessagesForApi(result.rows as Record<string, any>[]))
}
return messages.sort((left, right) => this.compareMessagePosition(left, right))
}
private async findMessageByServerIdDirect(
sessionId: string,
revokeMessage: Message,
serverId: string
): Promise<Message | undefined> {
const normalizedServerId = this.normalizeMessageIdToken(serverId)
if (!normalizedServerId) return undefined
const source = this.parseMessageKeySource(revokeMessage.messageKey)
const tables = source
? [source]
: await this.getCandidateMessageTables(sessionId, Math.max(0, Number(revokeMessage.createTime || 0) - 5 * 60))
const revokeLocalId = Number(revokeMessage.localId || 0)
for (const table of tables) {
const serverPredicate = this.buildServerIdPredicate('server_id', normalizedServerId)
const localFilter = Number.isFinite(revokeLocalId) && revokeLocalId > 0
? `AND local_id <> ${this.toSafeSqlInteger(revokeLocalId)}`
: ''
const sql = [
`SELECT *, '${this.escapeSqlString(table.dbPath)}' AS _db_path, '${this.escapeSqlString(table.tableName)}' AS table_name`,
`FROM ${this.quoteSqlIdentifier(table.tableName)}`,
`WHERE ${serverPredicate}`,
localFilter,
`AND local_type NOT IN (10000, 10002)`,
`ORDER BY local_id ASC`,
`LIMIT 1`
].filter(Boolean).join(' ')
const result = await wcdbService.execQuery('message', table.dbPath, sql)
if (!result.success || !Array.isArray(result.rows) || result.rows.length === 0) continue
const [message] = chatService.mapRowsToMessagesForApi(result.rows as Record<string, any>[])
if (message && !this.isRevokeSystemMessage(message)) return message
}
return undefined
}
private async getCandidateMessageTables(
sessionId: string,
since: number
): Promise<Array<{ dbPath: string; tableName: string }>> {
const result = await wcdbService.getMessageTableStats(sessionId)
if (!result.success || !Array.isArray(result.tables)) return []
const sinceSeconds = Math.max(0, Number(since || 0))
return result.tables
.map((table) => ({
dbPath: String(table?.db_path || table?.dbPath || '').trim(),
tableName: String(table?.table_name || table?.tableName || '').trim(),
lastTime: Number(table?.last_time || table?.lastTime || 0)
}))
.filter((table) => table.dbPath && table.tableName && (!sinceSeconds || table.lastTime >= sinceSeconds))
.sort((left, right) => right.lastTime - left.lastTime)
}
private mergeMessagesForRevokeLookup(primary: Message[], secondary: Message[]): Message[] {
const merged: Message[] = []
const keys = new Set<string>()
for (const message of [...primary, ...secondary]) {
const key = String(message.messageKey || '').trim()
if (key) {
if (keys.has(key)) continue
keys.add(key)
}
merged.push(message)
}
return merged
}
private async buildPayload(session: ChatSession, message: Message): Promise<MessagePushPayload | null> {
const sessionId = String(session.username || '').trim()
const messageKey = String(message.messageKey || '').trim()
if (!sessionId || !messageKey) return null
const isGroup = sessionId.endsWith('@chatroom')
const sessionType = this.getSessionType(sessionId, session)
const content = this.getMessageDisplayContent(message)
const rawid = this.getMessageRawId(message)
const createTime = Number(message.createTime || 0)
if (isGroup) {
const groupInfo = await chatService.getContactAvatar(sessionId)
const groupName = session.displayName || groupInfo?.displayName || sessionId
const sourceName = await this.resolveGroupSourceName(sessionId, message, session)
const avatarUrl = await this.normalizePushAvatarUrl(session.avatarUrl || groupInfo?.avatarUrl)
return {
event: 'message.new',
sessionId,
sessionType,
rawid,
avatarUrl,
groupName,
sourceName,
content,
timestamp: createTime
}
}
const contactInfo = await chatService.getContactAvatar(sessionId)
const avatarUrl = await this.normalizePushAvatarUrl(session.avatarUrl || contactInfo?.avatarUrl)
return {
event: 'message.new',
sessionId,
sessionType,
rawid,
avatarUrl,
sourceName: session.displayName || contactInfo?.displayName || sessionId,
content,
timestamp: createTime
}
}
private isRevokeSystemMessage(message: Message): boolean {
const localType = Number(message.localType || 0)
const content = `${message.rawContent || ''}\n${message.parsedContent || ''}`
if (content.includes('revokemsg') || content.includes('<replacemsg')) return true
if (content.includes('撤回了一条消息') || content.includes('尝试撤回此消息')) return true
if ((localType === 10000 || localType === 10002) && content.includes('撤回')) return true
return false
}
private isRevokeSessionSummary(session: ChatSession): boolean {
const lastMsgType = Number(session.lastMsgType || 0)
const summary = String(session.summary || '').trim()
return lastMsgType === 10002 || summary.includes('撤回了一条消息') || summary.includes('尝试撤回此消息')
}
private isSelfRevokeMessage(message: Message): boolean {
const content = `${message.rawContent || ''}\n${message.parsedContent || ''}`
return content.includes('你撤回')
}
private async findRevokedOriginalMessage(
sessionId: string,
revokeMessage: Message,
fetchedMessages: Message[],
revokedMessageId?: string
): Promise<Message | undefined> {
const fromFetched = this.findRevokedOriginalInMessages(fetchedMessages, revokeMessage, revokedMessageId)
if (fromFetched) return fromFetched
const createTime = Number(revokeMessage.createTime || 0)
if (!Number.isFinite(createTime) || createTime <= 0) return undefined
if (revokedMessageId) {
const directMessage = await this.findMessageByServerIdDirect(sessionId, revokeMessage, revokedMessageId)
if (directMessage) return directMessage
}
const lookupMessages = await this.getRecentRevokeContextMessages(sessionId, Math.max(0, createTime - 5 * 60))
if (lookupMessages.length === 0) return undefined
return this.findRevokedOriginalInMessages(lookupMessages, revokeMessage, revokedMessageId)
}
private collectSuppressedNormalMessageKeys(messagesToPush: Message[], fetchedMessages: Message[]): Set<string> {
const suppressed = new Set<string>()
const pushKeySet = new Set(messagesToPush.map((message) => String(message.messageKey || '').trim()).filter(Boolean))
for (const message of messagesToPush) {
if (!this.isRevokeSystemMessage(message)) continue
const originalMessage = this.findRevokedOriginalInMessages(fetchedMessages, message, this.extractRevokedMessageId(message))
const originalKey = String(originalMessage?.messageKey || '').trim()
if (originalKey && pushKeySet.has(originalKey)) {
suppressed.add(originalKey)
}
}
return suppressed
}
private findRevokedOriginalInMessages(
messages: Message[],
revokeMessage: Message,
revokedMessageId?: string
): Message | undefined {
if (revokedMessageId) {
const byPlatformId = this.findMessageByPlatformId(messages, revokedMessageId, revokeMessage)
if (byPlatformId) return byPlatformId
}
return this.findNearestMessageBeforeRevoke(messages, revokeMessage)
}
private findMessageByPlatformId(messages: Message[], revokedMessageId: string, revokeMessage: Message): Message | undefined {
const normalizedTarget = this.normalizeMessageIdToken(revokedMessageId)
if (!normalizedTarget) return undefined
for (const message of messages) {
if (message.messageKey === revokeMessage.messageKey) continue
if (this.isRevokeSystemMessage(message)) continue
if (this.getMessageIdTokens(message).has(normalizedTarget)) {
return message
}
}
return undefined
}
private findNearestMessageBeforeRevoke(messages: Message[], revokeMessage: Message): Message | undefined {
const revokeCreateTime = Number(revokeMessage.createTime || 0)
const revokeSortSeq = Number(revokeMessage.sortSeq || 0)
const revokeLocalId = Number(revokeMessage.localId || 0)
let best: Message | undefined
for (const message of messages) {
if (message.messageKey === revokeMessage.messageKey) continue
if (message.isSend === 1) continue
if (this.isRevokeSystemMessage(message)) continue
const createTime = Number(message.createTime || 0)
const sortSeq = Number(message.sortSeq || 0)
const localId = Number(message.localId || 0)
if (revokeCreateTime > 0 && createTime > revokeCreateTime) continue
if (revokeCreateTime > 0 && createTime === revokeCreateTime) {
if (revokeSortSeq > 0 && sortSeq > revokeSortSeq) continue
if (revokeSortSeq <= 0 && revokeLocalId > 0 && localId > revokeLocalId) continue
}
if (!best || this.compareMessagePosition(message, best) > 0) {
best = message
}
}
return best
}
private compareMessagePosition(left: Message, right: Message): number {
const leftCreateTime = Number(left.createTime || 0)
const rightCreateTime = Number(right.createTime || 0)
if (leftCreateTime !== rightCreateTime) return leftCreateTime - rightCreateTime
const leftSortSeq = Number(left.sortSeq || 0)
const rightSortSeq = Number(right.sortSeq || 0)
if (leftSortSeq !== rightSortSeq) return leftSortSeq - rightSortSeq
const leftLocalId = Number(left.localId || 0)
const rightLocalId = Number(right.localId || 0)
if (leftLocalId !== rightLocalId) return leftLocalId - rightLocalId
return String(left.messageKey || '').localeCompare(String(right.messageKey || ''))
}
private getMessageIdTokens(message: Message): Set<string> {
const tokens = new Set<string>()
const add = (value: unknown) => {
const normalized = this.normalizeMessageIdToken(value)
if (normalized) tokens.add(normalized)
}
add(message.serverIdRaw)
add(message.serverId)
add(message.localId)
const content = String(message.rawContent || '')
add(this.extractXmlValue(content, 'newmsgid'))
add(this.extractXmlValue(content, 'msgid'))
add(this.extractXmlValue(content, 'oldmsgid'))
add(this.extractXmlValue(content, 'svrid'))
return tokens
}
private extractRevokedMessageId(message: Message): string | undefined {
const content = String(message.rawContent || message.parsedContent || '')
const candidates = [
this.extractXmlValue(content, 'newmsgid'),
this.extractXmlValue(content, 'msgid'),
this.extractXmlValue(content, 'oldmsgid'),
this.extractXmlValue(content, 'svrid'),
message.serverIdRaw,
message.serverId
]
for (const candidate of candidates) {
const normalized = this.normalizeMessageIdToken(candidate)
if (normalized) return normalized
}
return undefined
}
private extractRevokerUsername(message: Message): string | undefined {
const content = String(message.rawContent || '')
const candidates = [
this.extractXmlValue(content, 'fromusername'),
this.extractXmlValue(content, 'session'),
message.senderUsername
]
for (const candidate of candidates) {
const normalized = String(candidate || '').trim()
if (normalized) return normalized
}
return undefined
}
private getRevokeFallbackContent(message: Message): string | null {
const content = String(message.rawContent || message.parsedContent || '')
const replacemsg = this.extractXmlValue(content, 'replacemsg')
if (replacemsg && !replacemsg.includes('撤回了一条消息')) return replacemsg
return null
}
private extractXmlValue(xml: string, tagName: string): string {
const decoded = this.decodeBasicXmlEntities(String(xml || ''))
const regex = new RegExp(`<${tagName}>([\\s\\S]*?)<\\/${tagName}>`, 'i')
const match = regex.exec(decoded)
if (!match) return ''
return match[1].replace(/<!\[CDATA\[/g, '').replace(/\]\]>/g, '').trim()
}
private decodeBasicXmlEntities(value: string): string {
return value
.replace(/&lt;/g, '<')
.replace(/&gt;/g, '>')
.replace(/&quot;/g, '"')
.replace(/&apos;/g, "'")
.replace(/&amp;/g, '&')
}
private normalizeMessageIdToken(value: unknown): string {
const raw = String(value ?? '').trim()
if (!raw) return ''
const numeric = /^-?\d+$/.test(raw) ? raw.replace(/^-/, '').replace(/^0+(?=\d)/, '') : raw
return numeric === '0' ? '' : numeric
}
private parseMessageKeySource(messageKey?: string): { dbPath: string; tableName: string } | null {
const raw = String(messageKey || '').trim()
if (!raw) return null
const parts = raw.split(':')
if (parts.length < 3) return null
parts.pop()
const tableName = String(parts.pop() || '').trim()
const encodedDbPath = parts.join(':')
if (!tableName || !encodedDbPath) return null
try {
const dbPath = decodeURIComponent(encodedDbPath)
return dbPath ? { dbPath, tableName } : null
} catch {
return { dbPath: encodedDbPath, tableName }
}
}
private quoteSqlIdentifier(identifier: string): string {
return `"${String(identifier || '').replace(/"/g, '""')}"`
}
private escapeSqlString(value: string): string {
return String(value || '').replace(/'/g, "''")
}
private toSafeSqlInteger(value: unknown): number {
const numeric = Number(value)
if (!Number.isFinite(numeric)) return 0
return Math.max(0, Math.floor(numeric))
}
private buildServerIdPredicate(columnName: string, serverId: string): string {
const column = this.quoteSqlIdentifier(columnName)
const escaped = this.escapeSqlString(serverId)
if (/^\d+$/.test(serverId)) {
return `(${column} = ${serverId} OR CAST(${column} AS TEXT) = '${escaped}')`
}
return `CAST(${column} AS TEXT) = '${escaped}'`
}
private async buildRevokePayload(
session: ChatSession,
message: Message,
fetchedMessages: Message[]
): Promise<MessagePushPayload | null> {
const sessionId = String(session.username || '').trim()
const messageKey = String(message.messageKey || '').trim()
if (!sessionId || !messageKey) return null
if (this.isSelfRevokeMessage(message)) return null
const revokedMessageId = this.extractRevokedMessageId(message)
const originalMessage = await this.findRevokedOriginalMessage(sessionId, message, fetchedMessages, revokedMessageId)
const rawid = this.getDisplayRawId(originalMessage, revokedMessageId, message)
const originalContent = originalMessage
? this.getMessageDisplayContent(originalMessage)
: this.getRevokeFallbackContent(message)
const safeContent = String(originalContent || '未知内容').trim() || '未知内容'
const content = `对方撤回了一条消息（rawid：${rawid}） 内容为“${safeContent}”`
this.rememberRecentlyRevokedOriginalTokens(sessionId, originalMessage, revokedMessageId, message)
const isGroup = sessionId.endsWith('@chatroom')
const sessionType = this.getSessionType(sessionId, session)
const createTime = Number(message.createTime || 0)
if (isGroup) {
const groupInfo = await chatService.getContactAvatar(sessionId)
const groupName = session.displayName || groupInfo?.displayName || sessionId
const revokerUsername = this.extractRevokerUsername(message)
const sourceMessage = revokerUsername ? { ...message, senderUsername: revokerUsername } : message
const sourceName = await this.resolveGroupSourceName(sessionId, sourceMessage, session)
const avatarUrl = await this.normalizePushAvatarUrl(session.avatarUrl || groupInfo?.avatarUrl)
return {
event: 'message.revoke',
sessionId,
sessionType,
rawid,
avatarUrl,
groupName,
sourceName,
content,
timestamp: createTime
}
}
const contactInfo = await chatService.getContactAvatar(sessionId)
const avatarUrl = await this.normalizePushAvatarUrl(session.avatarUrl || contactInfo?.avatarUrl)
return {
event: 'message.revoke',
sessionId,
sessionType,
rawid,
avatarUrl,
sourceName: session.displayName || contactInfo?.displayName || sessionId,
content,
timestamp: createTime
}
}
private getMessageRawId(message: Message): string {
return String(message.serverIdRaw || '').trim()
}
private getDisplayRawId(originalMessage?: Message, revokedMessageId?: string, revokeMessage?: Message): string {
const candidates = originalMessage
? [originalMessage.serverIdRaw, revokedMessageId]
: [revokedMessageId, revokeMessage?.serverIdRaw]
for (const candidate of candidates) {
const normalized = this.normalizeMessageIdToken(candidate)
if (normalized) return normalized
}
return '未知'
}
private rememberRecentlyRevokedOriginalTokens(
sessionId: string,
originalMessage?: Message,
revokedMessageId?: string,
revokeMessage?: Message
): void {
const keyPrefix = String(sessionId || '').trim()
if (!keyPrefix) return
this.pruneRecentlyRevokedOriginalTokens()
const tokens = new Set<string>()
const add = (value: unknown) => {
const normalized = this.normalizeMessageIdToken(value)
if (normalized) tokens.add(normalized)
}
if (originalMessage) {
add(originalMessage.serverIdRaw)
add(originalMessage.serverId)
}
add(revokedMessageId)
add(revokeMessage?.serverIdRaw)
add(revokeMessage?.serverId)
const now = Date.now()
for (const token of tokens) {
this.recentlyRevokedOriginalTokens.set(`${keyPrefix}\u0000${token}`, now)
}
}
private isRecentlyRevokedOriginal(sessionId: string, message: Message): boolean {
const keyPrefix = String(sessionId || '').trim()
if (!keyPrefix) return false
this.pruneRecentlyRevokedOriginalTokens()
for (const token of this.getMessageIdTokens(message)) {
if (this.recentlyRevokedOriginalTokens.has(`${keyPrefix}\u0000${token}`)) {
return true
}
}
return false
}
private pruneRecentlyRevokedOriginalTokens(): void {
const now = Date.now()
for (const [key, timestamp] of this.recentlyRevokedOriginalTokens.entries()) {
if (now - timestamp > this.recentMessageTtlMs) {
this.recentlyRevokedOriginalTokens.delete(key)
}
}
}
private async normalizePushAvatarUrl(avatarUrl?: string): Promise<string | undefined> {
const normalized = String(avatarUrl || '').trim()
if (!normalized) return undefined
if (!normalized.startsWith('data:image/')) {
return normalized
}
const cached = this.pushAvatarDataCache.get(normalized)
if (cached) return cached
const match = /^data:(image\/[a-zA-Z0-9.+-]+);base64,(.+)$/i.exec(normalized)
if (!match) return undefined
try {
const mimeType = match[1].toLowerCase()
const base64Data = match[2]
const imageBuffer = Buffer.from(base64Data, 'base64')
if (!imageBuffer.length) return undefined
const ext = this.getImageExtFromMime(mimeType)
const hash = createHash('sha1').update(normalized).digest('hex')
const filePath = path.join(this.pushAvatarCacheDir, `avatar_${hash}.${ext}`)
await fs.mkdir(this.pushAvatarCacheDir, { recursive: true })
try {
await fs.access(filePath)
} catch {
await fs.writeFile(filePath, imageBuffer)
}
const fileUrl = pathToFileURL(filePath).toString()
this.pushAvatarDataCache.set(normalized, fileUrl)
return fileUrl
} catch {
return undefined
}
}
private getImageExtFromMime(mimeType: string): string {
if (mimeType === 'image/png') return 'png'
if (mimeType === 'image/gif') return 'gif'
if (mimeType === 'image/webp') return 'webp'
return 'jpg'
}
private getSessionType(sessionId: string, session: ChatSession): MessagePushPayload['sessionType'] {
if (sessionId.endsWith('@chatroom')) {
return 'group'
}
if (sessionId.startsWith('gh_') || session.type === 'official') {
return 'official'
}
if (session.type === 'friend') {
return 'private'
}
return 'other'
}
private shouldPushPayload(payload: MessagePushPayload): boolean {
const sessionId = String(payload.sessionId || '').trim()
const filterMode = this.getMessagePushFilterMode()
if (filterMode === 'all') {
return true
}
const filterList = this.getMessagePushFilterList()
const listed = filterList.has(sessionId)
if (filterMode === 'whitelist') {
return listed
}
return !listed
}
private getMessagePushFilterMode(): 'all' | 'whitelist' | 'blacklist' {
const value = this.configService.get('messagePushFilterMode')
if (value === 'whitelist' || value === 'blacklist') return value
return 'all'
}
private getMessagePushFilterList(): Set<string> {
const value = this.configService.get('messagePushFilterList')
if (!Array.isArray(value)) return new Set()
return new Set(value.map((item) => String(item || '').trim()).filter(Boolean))
}
private collectMessageTableNamesFromPayload(payload: Record<string, unknown> | null): string[] {
const tableNames = new Set<string>()
const visit = (value: unknown, keyHint = '') => {
if (value === null || value === undefined) return
if (typeof value === 'string') {
const trimmed = value.trim()
if (!trimmed) return
const key = keyHint.toLowerCase()
if (key.includes('table') && this.isMessageTableChange(trimmed)) {
tableNames.add(trimmed)
return
}
for (const match of trimmed.matchAll(/\b(?:msg|message)_[a-z0-9_]+/gi)) {
const tableName = String(match[0] || '').trim()
if (tableName && this.isMessageTableChange(tableName)) tableNames.add(tableName)
}
return
}
if (Array.isArray(value)) {
for (const item of value) visit(item, keyHint)
return
}
if (typeof value !== 'object') return
for (const [key, nested] of Object.entries(value as Record<string, unknown>)) {
visit(nested, key)
}
}
visit(payload)
return Array.from(tableNames)
}
private isSessionTableChange(tableName: string): boolean {
return String(tableName || '').trim().toLowerCase() === 'session'
}
private isMessageTableChange(tableName: string): boolean {
const normalized = String(tableName || '').trim().toLowerCase()
if (!normalized) return false
return normalized === 'message' ||
normalized === 'msg' ||
normalized.startsWith('message_') ||
normalized.startsWith('msg_') ||
normalized.includes('message')
}
private resolveMessageTableTargetSessionIds(sessions: ChatSession[], tableNames: string[]): Set<string> {
const targets = new Set<string>()
if (!Array.isArray(tableNames) || tableNames.length === 0) return targets
const fullHashLookup = new Map<string, string>()
const shortHashLookup = new Map<string, string | null>()
for (const session of sessions) {
const sessionId = String(session.username || '').trim()
if (!sessionId) continue
const fullHash = createHash('md5').update(sessionId).digest('hex').toLowerCase()
fullHashLookup.set(fullHash, sessionId)
const shortHash = fullHash.slice(0, 16)
const existing = shortHashLookup.get(shortHash)
if (existing === undefined) {
shortHashLookup.set(shortHash, sessionId)
} else if (existing !== sessionId) {
shortHashLookup.set(shortHash, null)
}
}
for (const tableName of tableNames) {
const matched = this.matchSessionIdByMessageTableName(tableName, fullHashLookup, shortHashLookup)
if (matched) targets.add(matched)
}
return targets
}
private matchSessionIdByMessageTableName(
tableName: string,
fullHashLookup: Map<string, string>,
shortHashLookup: Map<string, string | null>
): string | null {
const normalized = String(tableName || '').trim().toLowerCase()
if (!normalized) return null
const suffix = normalized.startsWith('msg_') ? normalized.slice(4) : ''
if (suffix) {
const directFull = fullHashLookup.get(suffix)
if (directFull) return directFull
if (suffix.length >= 16) {
const directShort = shortHashLookup.get(suffix.slice(0, 16))
if (typeof directShort === 'string') return directShort
}
}
const hashMatch = /[a-f0-9]{32}|[a-f0-9]{16}/i.exec(normalized)
if (!hashMatch?.[0]) return null
const hash = hashMatch[0].toLowerCase()
if (hash.length >= 32) {
const full = fullHashLookup.get(hash)
if (full) return full
}
const short = shortHashLookup.get(hash.slice(0, 16))
return typeof short === 'string' ? short : null
}
private bumpSessionBaseline(sessionId: string, message: Message): void {
const key = String(sessionId || '').trim()
if (!key) return
const createTime = Number(message.createTime || 0)
if (!Number.isFinite(createTime) || createTime <= 0) return
const current = this.sessionBaseline.get(key) || { lastTimestamp: 0, unreadCount: 0 }
if (createTime > current.lastTimestamp) {
this.sessionBaseline.set(key, {
...current,
lastTimestamp: createTime
})
}
}
private getMessageDisplayContent(message: Message): string | null {
const normalizeTextContent = (value: string | null | undefined): string | null => {
const text = String(value || '')
if (!text) return null
return text.replace(/^[\s]*([a-zA-Z0-9_@-]+):(?!\/\/)(?:\s*(?:\r?\n|<br\s*\/?>)\s*|\s*)/i, '').trim()
}
const cleanOfficialPrefix = (value: string | null): string | null => {
if (!value) return value
return value.replace(/^\s*\[视频号\]\s*/u, '').trim() || value
}
switch (Number(message.localType || 0)) {
case 1:
return cleanOfficialPrefix(normalizeTextContent(message.parsedContent || message.rawContent))
case 3:
return '[图片]'
case 34:
return '[语音]'
case 43:
return '[视频]'
case 47:
return '[表情]'
case 42:
return cleanOfficialPrefix(message.cardNickname || '[名片]')
case 48:
return '[位置]'
case 49:
return cleanOfficialPrefix(message.linkTitle || message.fileName || '[消息]')
default:
return cleanOfficialPrefix(normalizeTextContent(message.parsedContent || message.rawContent) || null)
}
}
private async resolveGroupSourceName(chatroomId: string, message: Message, session: ChatSession): Promise<string> {
const senderUsername = String(message.senderUsername || '').trim()
if (!senderUsername) {
return session.lastSenderDisplayName || '未知发送者'
}
const groupNicknames = await this.getGroupNicknames(chatroomId)
const senderKey = senderUsername.toLowerCase()
const nickname = groupNicknames[senderKey]
if (nickname) {
return nickname
}
const contactInfo = await chatService.getContactAvatar(senderUsername)
return contactInfo?.displayName || senderUsername
}
private async getGroupNicknames(chatroomId: string): Promise<Record<string, string>> {
const cacheKey = String(chatroomId || '').trim()
if (!cacheKey) return {}
const cached = this.groupNicknameCache.get(cacheKey)
if (cached && Date.now() - cached.updatedAt < this.groupNicknameCacheTtlMs) {
return cached.nicknames
}
const result = await wcdbService.getGroupNicknames(cacheKey)
const nicknames = result.success && result.nicknames
? this.sanitizeGroupNicknames(result.nicknames)
: {}
this.groupNicknameCache.set(cacheKey, { nicknames, updatedAt: Date.now() })
return nicknames
}
private sanitizeGroupNicknames(nicknames: Record<string, string>): Record<string, string> {
const buckets = new Map<string, Set<string>>()
for (const [memberIdRaw, nicknameRaw] of Object.entries(nicknames || {})) {
const memberId = String(memberIdRaw || '').trim().toLowerCase()
const nickname = String(nicknameRaw || '').trim()
if (!memberId || !nickname) continue
const slot = buckets.get(memberId)
if (slot) {
slot.add(nickname)
} else {
buckets.set(memberId, new Set([nickname]))
}
}
const trusted: Record<string, string> = {}
for (const [memberId, nicknameSet] of buckets.entries()) {
if (nicknameSet.size !== 1) continue
trusted[memberId] = Array.from(nicknameSet)[0]
}
return trusted
}
private isRecentMessage(messageKey: string): boolean {
this.pruneRecentMessageKeys()
const timestamp = this.recentMessageKeys.get(messageKey)
return typeof timestamp === 'number' && Date.now() - timestamp < this.recentMessageTtlMs
}
private rememberMessageKey(messageKey: string): void {
this.recentMessageKeys.set(messageKey, Date.now())
this.pruneRecentMessageKeys()
}
private isSeenMessage(messageKey: string): boolean {
this.pruneSeenMessageKeys()
const timestamp = this.seenMessageKeys.get(messageKey)
return typeof timestamp === 'number' && Date.now() - timestamp < this.recentMessageTtlMs
}
private rememberSeenMessageKey(messageKey: string): void {
this.seenMessageKeys.set(messageKey, Date.now())
this.pruneSeenMessageKeys()
}
private pruneRecentMessageKeys(): void {
const now = Date.now()
for (const [key, timestamp] of this.recentMessageKeys.entries()) {
if (now - timestamp > this.recentMessageTtlMs) {
this.recentMessageKeys.delete(key)
}
}
}
private pruneSeenMessageKeys(): void {
const now = Date.now()
for (const [key, timestamp] of this.seenMessageKeys.entries()) {
if (now - timestamp > this.recentMessageTtlMs) {
this.seenMessageKeys.delete(key)
}
}
}
}
export const messagePushService = new MessagePushService()