fix: fanout p2p system notices to users

server/im_http.go

@@ -11626,7 +11626,9 @@ func broadcastIMConversationSystemMessage(tenantID types.TenantID, msg *types.Me
 		logs.Warn.Printf("im system message: hub route queue full topic=%s seq=%d", msg.Topic, msg.SeqId)
 	}
 	deliverIMConversationSystemMessageToP2PSessions(tenantID, msg, out)
-	publishRealtimeTopicMessage(msg.Topic, out)
+	if !publishRealtimeP2PConversationSystemMessage(tenantID, msg.Topic, out) {
+		publishRealtimeTopicMessage(msg.Topic, out)
+	}
 	broadcastIMConversationSystemPresence(tenantID, msg, timestamp)
 }
 
@@ -11672,9 +11674,10 @@ func deliverIMConversationSystemMessageToP2PSessions(tenantID types.TenantID, ms
 		if session.getSub(msg.Topic) != nil {
 			return true
 		}
-		msgCopy := out.copy()
-		msgCopy.RcptTo = session.uid.UserId()
-		msgCopy.Data.Topic = msg.Topic
+		msgCopy, ok := p2pConversationSystemMessageForUser(out, msg.Topic, session.uid)
+		if !ok {
+			return true
+		}
 		if !session.queueOut(msgCopy) {
 			logs.Warn.Printf("im system message: session queue full topic=%s seq=%d user=%s", msg.Topic, msg.SeqId, session.uid.UserId())
 		}
@@ -11682,6 +11685,43 @@ func deliverIMConversationSystemMessageToP2PSessions(tenantID types.TenantID, ms
 	})
 }
 
+func publishRealtimeP2PConversationSystemMessage(tenantID types.TenantID, topic string, out *ServerComMessage) bool {
+	uid1, uid2, err := types.ParseP2P(topic)
+	if err != nil {
+		return false
+	}
+	for _, uid := range []types.Uid{uid1, uid2} {
+		msgCopy, ok := p2pConversationSystemMessageForUser(out, topic, uid)
+		if !ok {
+			continue
+		}
+		publishRealtimeUserMessage(uid, msgCopy)
+	}
+	return true
+}
+
+func p2pConversationSystemMessageForUser(out *ServerComMessage, topic string, uid types.Uid) (*ServerComMessage, bool) {
+	if out == nil || uid.IsZero() {
+		return nil, false
+	}
+	viewTopic, err := types.P2PNameForUser(uid, topic)
+	if err != nil || viewTopic == "" {
+		return nil, false
+	}
+	msgCopy := out.copy()
+	msgCopy.RcptTo = uid.UserId()
+	if msgCopy.Data != nil {
+		msgCopy.Data.Topic = viewTopic
+	}
+	if msgCopy.Info != nil {
+		msgCopy.Info.Topic = viewTopic
+	}
+	if msgCopy.Pres != nil {
+		msgCopy.Pres.Topic = viewTopic
+	}
+	return msgCopy, true
+}
+
 func broadcastIMConversationSystemPresence(tenantID types.TenantID, msg *types.Message, timestamp time.Time) {
 	if globals.hub == nil || msg == nil || msg.SeqId <= 0 || msg.Topic == "" {
 		return