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channels: give kicked/banned/promoted/transferred users a real qts so their client applies it

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updateChannelParticipant carries the account's qts per the MTProto spec, but
the server always sent Qts: 0, so real clients silently discarded it as a
stale duplicate -- the banned/kicked user's channel never vanished locally
and no correct "removed by admin" message showed, even though the update was
delivered successfully at the transport layer.

Add a durable per-device qts queue (channel_participant_event_queue) sharing
its qts number space with the existing secret-chat queue (one qts sequence
per device, per spec), and use it to stamp a correct, monotonically
increasing qts on the update for every device of the affected user -- for
channel bans/kicks, admin promotion/demotion, and ownership transfer. A
device offline when it happened can now recover the event via
updates.getDifference instead of missing it permanently.
This commit is contained in:
Astra 2026-09-15 15:43:52 +01:00
parent 97711c9d2e
commit 206bde18e0
16 changed files with 482 additions and 42 deletions
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17
internal/store/secretchat.go
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@ -59,3 +59,20 @@ type EncryptedQueueStore interface {
// GetEncryptedFile 按 id + access_hash 回查文件快照（inputEncryptedFile 复用路径）。
GetEncryptedFile(ctx context.Context, id, accessHash int64) (domain.EncryptedFileRef, bool, error)
}
// ChannelParticipantQueueStore 持久化 channel 成员关系自通知（kick/ban/promote/
// transfer）的设备级 qts 投递队列。updateChannelParticipant 走 qts 序列（MTProto
// 规范），与 EncryptedQueueStore 共用同一张 secret_qts_watermarks 水位表——每设备
// 只有一条 qts 序列，两类事件按 qts 交错，通过各自独立的表分别落盘，读侧
// （updates.getDifference）按 qts 归并成连续序列。
type ChannelParticipantQueueStore interface {
// AppendChannelParticipantEvent 为接收设备分配下一个 qts 并写入队列，与
// reserved_qts 推进同事务（与 AppendEncryptedMessage 共用同一水位表）。
AppendChannelParticipantEvent(ctx context.Context, ev domain.DeviceChannelParticipantEvent) (domain.DeviceChannelParticipantEvent, error)
// ListChannelParticipantEventsSince 返回接收设备 qts > sinceQts 的连续事件
// （qts 升序，最多 limit）。
ListChannelParticipantEventsSince(ctx context.Context, receiverAuthKeyID int64, sinceQts, limit int) ([]domain.DeviceChannelParticipantEvent, error)
// AckChannelParticipantEvents 标记 qts<=maxQts 行为 acked（confirmed_qts 由
// AckEncryptedMessages 在同一张水位表上推进，这里只做本表的 GC 标记）。
AckChannelParticipantEvents(ctx context.Context, receiverAuthKeyID int64, maxQts int) error
}