487 lines
16 KiB
Go
487 lines
16 KiB
Go
package rpc
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import (
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"context"
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"sync"
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"github.com/gotd/td/tg"
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"telesrv/internal/domain"
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)
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func (r *Router) onMessagesSendReaction(ctx context.Context, req *tg.MessagesSendReactionRequest) (tg.UpdatesClass, error) {
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if req.MsgID <= 0 || req.MsgID > domain.MaxMessageBoxID {
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return nil, messageIDInvalidErr()
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}
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if reactions, ok := req.GetReaction(); ok && len(reactions) > maxReactionVector {
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return nil, limitInvalidErr()
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}
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userID, peer, err := r.reactionPeer(ctx, req.Peer, nil)
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if err != nil {
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return nil, err
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}
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reactions, err := domainMessageReactionsFromTL(req)
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if err != nil {
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return nil, err
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}
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// 官方语义（reactions_user_max_default/premium）：向量尾部是最新选择，
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// 超出每用户上限丢弃旧的而非报错；premium viewer 用 premium 档（appConfig
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// reactions_user_max_premium=3），否则客户端允许的多 reaction 会被静默裁剪。
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perUserMax := domain.MessageReactionsUserMax(r.viewerPremium(ctx, userID))
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reactions = domain.TrimMessageReactionsToUserMax(reactions, perUserMax)
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date := int(r.clock.Now().Unix())
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if peer.Type == domain.PeerTypeChannel && r.deps.Channels != nil {
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res, err := r.deps.Channels.SetMessageReactions(ctx, userID, domain.SetChannelMessageReactionsRequest{
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UserID: userID,
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ChannelID: peer.ID,
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MessageID: req.MsgID,
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Reactions: reactions,
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Big: req.Big,
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AddToRecent: req.GetAddToRecent(),
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Date: date,
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ReactionsPerUserMax: perUserMax,
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})
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if err != nil {
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return nil, channelReactionErr(err)
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}
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updates := r.channelMessageReactionsUpdates(ctx, userID, res)
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// 官方保证消息作者收到 updateMessageReactions：作者进 explicit 收件人，
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// 不依赖在线 viewer 采样（fan-out 封顶后作者可能被挤出采样集）。
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ids := []int{res.Message.ID}
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r.pushChannelViewerUpdates(ctx, userID, res.Channel.ID, []int64{userID, res.Message.SenderUserID}, func(viewerUserID int64) *tg.Updates {
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return r.channelReactionsViewerUpdates(ctx, userID, viewerUserID, res, ids)
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})
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return updates, nil
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}
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if peer.Type == domain.PeerTypeUser && r.deps.Messages != nil {
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if len(reactions) == 0 && r.shouldSuppressTransientPrivateReactionClear(userID, peer, req.MsgID, date) {
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res, err := r.deps.Messages.GetMessageReactions(ctx, userID, domain.PrivateMessageReactionsRequest{
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OwnerUserID: userID,
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Peer: peer,
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IDs: []int{req.MsgID},
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})
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if err != nil {
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return nil, messageReactionErr(err)
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}
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return r.privateMessagesReactionsUpdates(ctx, userID, peer, res, []int{req.MsgID}), nil
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}
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if req.Big && len(reactions) > 0 {
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r.rememberTransientPrivateBigReaction(userID, peer, req.MsgID, date)
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}
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res, err := r.deps.Messages.SetMessageReactions(ctx, userID, domain.SetPrivateMessageReactionsRequest{
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UserID: userID,
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Peer: peer,
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MessageID: req.MsgID,
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Reactions: reactions,
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Big: req.Big,
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AddToRecent: req.GetAddToRecent(),
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Date: date,
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ReactionsPerUserMax: perUserMax,
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})
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if err != nil {
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return nil, messageReactionErr(err)
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}
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if len(reactions) == 0 {
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r.forgetTransientPrivateBigReaction(userID, peer, req.MsgID)
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}
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if err := r.recordMessageReactionUse(ctx, userID, reactions, req.GetAddToRecent(), date); err != nil {
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return nil, internalErr()
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}
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recordedEvents, err := r.recordPrivateMessageReactionEvents(ctx, userID, res)
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if err != nil {
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return nil, internalErr()
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}
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// reaction 事件占双方账号 pts 但 updateMessageReactions 不带 pts；
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// 在线直推必须附 pts 簿记，否则双方下一条带 pts 的更新被判空洞。
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updates := r.privateMessageReactionsUpdates(ctx, userID, peer, res)
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if updates != nil {
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updates.Updates = appendAuxPtsBookkeeping(updates.Updates, recordedEvents[userID])
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}
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r.pushUserUpdates(ctx, userID, updates)
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for _, msg := range res.Messages {
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if msg.OwnerUserID == 0 || msg.OwnerUserID == userID {
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continue
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}
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viewerPeer := msg.Peer
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viewerUpdates := r.privateMessageReactionsUpdates(ctx, msg.OwnerUserID, viewerPeer, res)
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if viewerUpdates != nil {
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viewerUpdates.Updates = appendAuxPtsBookkeeping(viewerUpdates.Updates, recordedEvents[msg.OwnerUserID])
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}
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r.pushUserUpdates(ctx, msg.OwnerUserID, viewerUpdates)
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}
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return updates, nil
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}
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return tgEmptyUpdates(int(r.clock.Now().Unix())), nil
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}
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const (
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transientPrivateBigReactionClearWindowSeconds = 3
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transientPrivateBigReactionMaxEntries = 4096
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)
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type transientPrivateBigReactionKey struct {
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UserID int64
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PeerID int64
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MessageID int
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}
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type transientPrivateBigReactionEntry struct {
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ExpiresAt int
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}
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type transientPrivateBigReactionCache struct {
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mu sync.Mutex
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entries map[transientPrivateBigReactionKey]transientPrivateBigReactionEntry
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}
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func transientPrivateBigReactionMapKey(userID int64, peer domain.Peer, messageID int) transientPrivateBigReactionKey {
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return transientPrivateBigReactionKey{
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UserID: userID,
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PeerID: peer.ID,
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MessageID: messageID,
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}
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}
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func (r *Router) rememberTransientPrivateBigReaction(userID int64, peer domain.Peer, messageID int, date int) {
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if peer.Type != domain.PeerTypeUser || userID == 0 || peer.ID == 0 || messageID <= 0 || date <= 0 {
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return
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}
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r.transientPrivateBigReactions.remember(transientPrivateBigReactionMapKey(userID, peer, messageID), date+transientPrivateBigReactionClearWindowSeconds, date)
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}
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func (r *Router) shouldSuppressTransientPrivateReactionClear(userID int64, peer domain.Peer, messageID int, date int) bool {
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return r.transientPrivateBigReactions.shouldSuppress(transientPrivateBigReactionMapKey(userID, peer, messageID), date)
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}
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func (r *Router) forgetTransientPrivateBigReaction(userID int64, peer domain.Peer, messageID int) {
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r.transientPrivateBigReactions.forget(transientPrivateBigReactionMapKey(userID, peer, messageID))
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}
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func (c *transientPrivateBigReactionCache) remember(key transientPrivateBigReactionKey, expiresAt int, now int) {
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c.mu.Lock()
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defer c.mu.Unlock()
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if c.entries == nil {
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c.entries = make(map[transientPrivateBigReactionKey]transientPrivateBigReactionEntry)
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}
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if len(c.entries) >= transientPrivateBigReactionMaxEntries {
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c.pruneLocked(now)
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}
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if len(c.entries) >= transientPrivateBigReactionMaxEntries {
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c.dropOneLocked()
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}
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c.entries[key] = transientPrivateBigReactionEntry{ExpiresAt: expiresAt}
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}
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func (c *transientPrivateBigReactionCache) shouldSuppress(key transientPrivateBigReactionKey, now int) bool {
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c.mu.Lock()
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defer c.mu.Unlock()
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entry, ok := c.entries[key]
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if !ok {
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return false
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}
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if now > entry.ExpiresAt {
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delete(c.entries, key)
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return false
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}
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return true
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}
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func (c *transientPrivateBigReactionCache) forget(key transientPrivateBigReactionKey) {
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c.mu.Lock()
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defer c.mu.Unlock()
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delete(c.entries, key)
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}
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func (c *transientPrivateBigReactionCache) pruneLocked(now int) {
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for key, entry := range c.entries {
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if now > entry.ExpiresAt {
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delete(c.entries, key)
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}
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}
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}
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func (c *transientPrivateBigReactionCache) dropOneLocked() {
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var oldestKey transientPrivateBigReactionKey
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oldestExpiresAt := int(^uint(0) >> 1)
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for key, entry := range c.entries {
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if entry.ExpiresAt < oldestExpiresAt {
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oldestKey = key
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oldestExpiresAt = entry.ExpiresAt
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}
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}
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delete(c.entries, oldestKey)
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}
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func (r *Router) recordMessageReactionUse(ctx context.Context, userID int64, reactions []domain.MessageReaction, addToRecent bool, date int) error {
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if len(reactions) == 0 || r.deps.Channels == nil {
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return nil
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}
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recorder, ok := r.deps.Channels.(messageReactionUsageRecorder)
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if !ok {
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return nil
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}
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return recorder.RecordMessageReactionUse(ctx, userID, reactions, addToRecent, date)
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}
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func (r *Router) recordPrivateMessageReactionEvents(ctx context.Context, requestUserID int64, res domain.PrivateMessageReactionsResult) (map[int64]domain.UpdateEvent, error) {
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if r.deps.Updates == nil {
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return nil, nil
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}
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recorder, ok := r.deps.Updates.(messageReactionUpdateRecorder)
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if !ok {
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return nil, nil
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}
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authKeyID, _ := AuthKeyIDFrom(ctx)
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events := make(map[int64]domain.UpdateEvent, len(res.Messages))
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for _, msg := range res.Messages {
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if msg.OwnerUserID == 0 || msg.ID == 0 {
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continue
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}
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eventAuthKeyID := [8]byte{}
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if msg.OwnerUserID == requestUserID {
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eventAuthKeyID = authKeyID
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}
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event, _, err := recorder.RecordMessageReactions(ctx, eventAuthKeyID, msg.OwnerUserID, msg)
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if err != nil {
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return nil, err
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}
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events[msg.OwnerUserID] = event
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}
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return events, nil
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}
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func (r *Router) channelMessageReactionsUpdates(ctx context.Context, viewerUserID int64, res domain.ChannelMessageReactionsResult) *tg.Updates {
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ids := []int{res.Message.ID}
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if res.Message.ID <= 0 && len(res.Messages) > 0 {
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ids = []int{res.Messages[0].ID}
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}
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return r.channelMessagesReactionsUpdates(ctx, viewerUserID, res, ids)
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}
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// channelReactionsViewerUpdates 为 fan-out 构造某 viewer 的 updateMessageReactions。
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// res 内的聚合是请求者视角（chosen/My/unread 都是 per-viewer 字段）：
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// - 请求者本人：直接用；
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// - 消息作者：按作者视角重载（unread 角标与作者自己的 chosen 必须正确）；
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// - 其他 viewer：官方 min 语义——只下发计数与 recent 列表，客户端保留本地 chosen
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// （TDesktop 非 min 更新会用 chosen_order 直接覆盖本地 my 状态，串视角即"别人的
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// reaction 显示成我选的"）。
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func (r *Router) channelReactionsViewerUpdates(ctx context.Context, requestUserID, viewerUserID int64, res domain.ChannelMessageReactionsResult, ids []int) *tg.Updates {
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if viewerUserID == requestUserID {
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return r.channelMessagesReactionsUpdates(ctx, viewerUserID, res, ids)
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}
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if viewerUserID != 0 && viewerUserID == reactionsResultSenderID(res) && r.deps.Channels != nil {
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reloaded, err := r.deps.Channels.GetMessageReactions(ctx, viewerUserID, domain.ChannelMessageReactionsRequest{
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UserID: viewerUserID,
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ChannelID: res.Channel.ID,
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IDs: append([]int(nil), ids...),
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})
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if err == nil && len(reloaded.Messages) > 0 {
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reloaded.Channel = res.Channel
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return r.channelMessagesReactionsUpdates(ctx, viewerUserID, reloaded, ids)
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}
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}
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updates := r.channelMessagesReactionsUpdates(ctx, viewerUserID, minifyChannelReactionsResult(res), ids)
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if updates != nil {
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for _, update := range updates.Updates {
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if reactions, ok := update.(*tg.UpdateMessageReactions); ok {
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reactions.Reactions.Min = true
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}
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}
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}
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return updates
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}
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// reactionsResultSenderID 取结果中消息作者（单消息场景；多消息 moderation 不做作者特判）。
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func reactionsResultSenderID(res domain.ChannelMessageReactionsResult) int64 {
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if res.Message.ID != 0 {
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return res.Message.SenderUserID
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}
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if len(res.Messages) == 1 {
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return res.Messages[0].SenderUserID
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}
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return 0
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}
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// minifyChannelReactionsResult 深拷并清掉所有 per-viewer 字段（chosen/My/unread），
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// 供 min 推送使用；不改原 res（请求者响应仍用全量视角）。
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func minifyChannelReactionsResult(res domain.ChannelMessageReactionsResult) domain.ChannelMessageReactionsResult {
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scrub := func(in *domain.ChannelMessageReactions) *domain.ChannelMessageReactions {
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if in == nil {
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return nil
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}
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out := domain.ChannelMessageReactions{
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CanSeeList: in.CanSeeList,
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Results: make([]domain.ChannelMessageReactionCount, 0, len(in.Results)),
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Recent: make([]domain.ChannelMessagePeerReaction, 0, len(in.Recent)),
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}
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for _, item := range in.Results {
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item.ChosenOrder = 0
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out.Results = append(out.Results, item)
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}
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for _, item := range in.Recent {
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item.My = false
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item.Unread = false
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item.ChosenOrder = 0
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out.Recent = append(out.Recent, item)
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}
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return &out
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}
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out := res
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if scrubbed := scrub(res.Message.Reactions); scrubbed != nil {
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msg := res.Message
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msg.Reactions = scrubbed
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out.Message = msg
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}
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if len(res.Messages) > 0 {
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out.Messages = make([]domain.ChannelMessage, 0, len(res.Messages))
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for _, msg := range res.Messages {
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msg.Reactions = scrub(msg.Reactions)
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out.Messages = append(out.Messages, msg)
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}
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}
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if scrubbed := scrub(&res.Reactions); scrubbed != nil {
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out.Reactions = *scrubbed
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}
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return out
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}
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func (r *Router) privateMessageReactionsUpdates(ctx context.Context, viewerUserID int64, peer domain.Peer, res domain.PrivateMessageReactionsResult) *tg.Updates {
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ids := make([]int, 0, 1)
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for _, msg := range res.Messages {
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if msg.OwnerUserID == viewerUserID && msg.ID > 0 {
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ids = append(ids, msg.ID)
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break
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}
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}
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return r.privateMessagesReactionsUpdates(ctx, viewerUserID, peer, res, ids)
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}
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func (r *Router) privateMessagesReactionsUpdates(ctx context.Context, viewerUserID int64, peer domain.Peer, res domain.PrivateMessageReactionsResult, ids []int) *tg.Updates {
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updates := make([]tg.UpdateClass, 0, len(ids))
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messagesByID := make(map[int]domain.Message, len(res.Messages))
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userIDs := []int64{viewerUserID}
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if peer.Type == domain.PeerTypeUser && peer.ID != 0 {
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userIDs = append(userIDs, peer.ID)
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}
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for _, msg := range res.Messages {
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if msg.OwnerUserID != viewerUserID || msg.ID == 0 {
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continue
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}
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messagesByID[msg.ID] = msg
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if msg.Peer.Type == domain.PeerTypeUser && msg.Peer.ID != 0 {
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userIDs = append(userIDs, msg.Peer.ID)
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}
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if msg.From.Type == domain.PeerTypeUser && msg.From.ID != 0 {
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userIDs = append(userIDs, msg.From.ID)
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}
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if msg.Reactions != nil {
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userIDs = append(userIDs, channelMessageReactionUserIDs(*msg.Reactions)...)
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}
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}
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userIDs = append(userIDs, channelMessageReactionUserIDs(res.Reactions)...)
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fallbackPeer := tgPeer(peer)
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for _, id := range ids {
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if id <= 0 || id > domain.MaxMessageBoxID {
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continue
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}
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msg, ok := messagesByID[id]
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outPeer := fallbackPeer
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reactions := domain.ChannelMessageReactions{
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CanSeeList: true,
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Results: []domain.ChannelMessageReactionCount{},
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Recent: []domain.ChannelMessagePeerReaction{},
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}
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if ok {
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outPeer = tgPeer(msg.Peer)
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if msg.Reactions != nil {
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reactions = *msg.Reactions
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}
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}
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if outPeer == nil {
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continue
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}
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converted := tgMessageReactions(viewerUserID, &reactions)
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if converted == nil {
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converted = &tg.MessageReactions{Results: []tg.ReactionCount{}}
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}
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updates = append(updates, &tg.UpdateMessageReactions{
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Peer: outPeer,
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MsgID: id,
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Reactions: *converted,
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})
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}
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return &tg.Updates{
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Updates: updates,
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Users: r.tgUsersForIDs(ctx, viewerUserID, userIDs),
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Chats: []tg.ChatClass{},
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Date: int(r.clock.Now().Unix()),
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Seq: 0,
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}
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}
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func (r *Router) channelMessagesReactionsUpdates(ctx context.Context, viewerUserID int64, res domain.ChannelMessageReactionsResult, ids []int) *tg.Updates {
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updates := make([]tg.UpdateClass, 0, len(ids))
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messagesByID := make(map[int]domain.ChannelMessage, len(res.Messages)+1)
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if res.Message.ID != 0 {
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messagesByID[res.Message.ID] = res.Message
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}
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for _, msg := range res.Messages {
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if msg.ID != 0 {
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messagesByID[msg.ID] = msg
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}
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}
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userIDs := make([]int64, 0)
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for _, msg := range messagesByID {
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if msg.Reactions != nil {
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userIDs = append(userIDs, channelMessageReactionUserIDs(*msg.Reactions)...)
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}
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}
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userIDs = append(userIDs, channelMessageReactionUserIDs(res.Reactions)...)
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for _, id := range ids {
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if id <= 0 || id > domain.MaxMessageBoxID {
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continue
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}
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msg, ok := messagesByID[id]
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reactions := domain.ChannelMessageReactions{
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CanSeeList: !res.Channel.Broadcast || res.Channel.Megagroup,
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Results: []domain.ChannelMessageReactionCount{},
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Recent: []domain.ChannelMessagePeerReaction{},
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}
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if ok && msg.Reactions != nil {
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reactions = *msg.Reactions
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} else if ok && len(res.Reactions.Results) > 0 && res.Message.ID == id {
|
||
reactions = res.Reactions
|
||
}
|
||
converted := tgMessageReactions(viewerUserID, &reactions)
|
||
if converted == nil {
|
||
converted = &tg.MessageReactions{Results: []tg.ReactionCount{}}
|
||
}
|
||
update := &tg.UpdateMessageReactions{
|
||
Peer: &tg.PeerChannel{ChannelID: res.Channel.ID},
|
||
MsgID: id,
|
||
Reactions: *converted,
|
||
}
|
||
if ok {
|
||
if topID := channelMessageThreadRootID(msg); topID > 0 && topID != id {
|
||
update.SetTopMsgID(topID)
|
||
}
|
||
}
|
||
updates = append(updates, update)
|
||
}
|
||
return &tg.Updates{
|
||
Updates: updates,
|
||
Users: r.tgUsersForIDs(ctx, viewerUserID, userIDs),
|
||
Chats: tgChannels(viewerUserID, []domain.Channel{res.Channel}),
|
||
Date: int(r.clock.Now().Unix()),
|
||
Seq: 0,
|
||
}
|
||
}
|
||
|
||
func channelMessageReactionUserIDs(reactions domain.ChannelMessageReactions) []int64 {
|
||
out := make([]int64, 0, len(reactions.Recent))
|
||
for _, item := range reactions.Recent {
|
||
if item.UserID != 0 {
|
||
out = append(out, item.UserID)
|
||
}
|
||
}
|
||
return out
|
||
}
|