move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/telegram/peers/update.go

@@ -0,0 +1,122 @@
+package peers
+
+import (
+	"go.mau.fi/mautrix-telegram/pkg/gotd/constant"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+func userPeerID(id int64) (r constant.TDLibPeerID) {
+	r.User(id)
+	return r
+}
+
+func chatPeerID(id int64) (r constant.TDLibPeerID) {
+	r.Chat(id)
+	return r
+}
+
+func channelPeerID(id int64) (r constant.TDLibPeerID) {
+	r.Channel(id)
+	return r
+}
+
+func peerIDFromPeerClass(p tg.PeerClass) constant.TDLibPeerID {
+	switch p := p.(type) {
+	case *tg.PeerUser:
+		return userPeerID(p.UserID)
+	case *tg.PeerChat:
+		return chatPeerID(p.ChatID)
+	case *tg.PeerChannel:
+		return channelPeerID(p.ChannelID)
+	}
+	return 0
+}
+
+func (m *Manager) updated(ids ...constant.TDLibPeerID) {
+	m.needUpdateMux.Lock()
+	defer m.needUpdateMux.Unlock()
+
+	m.needUpdate.delete(ids...)
+}
+
+func (m *Manager) updatedFull(id constant.TDLibPeerID) {
+	m.needUpdateMux.Lock()
+	defer m.needUpdateMux.Unlock()
+
+	m.needUpdateFull.delete(id)
+}
+
+func (m *Manager) needsUpdate(id constant.TDLibPeerID) bool {
+	m.needUpdateMux.Lock()
+	defer m.needUpdateMux.Unlock()
+
+	return m.needUpdate.has(id)
+}
+
+func (m *Manager) needsUpdateFull(id constant.TDLibPeerID) bool {
+	m.needUpdateMux.Lock()
+	defer m.needUpdateMux.Unlock()
+
+	return m.needUpdateFull.has(id)
+}
+
+func (m *Manager) applyUpdates(updates []tg.UpdateClass) {
+	// TODO(tdakkota): support partial updates in storage
+
+	m.needUpdateMux.Lock()
+	defer m.needUpdateMux.Unlock()
+
+	appendBoth := func(p ...constant.TDLibPeerID) {
+		m.needUpdate.add(p...)
+		m.needUpdateFull.add(p...)
+	}
+
+	for _, update := range updates {
+		switch update := update.(type) {
+		case *tg.UpdateChatParticipants:
+			p, ok := update.Participants.(*tg.ChatParticipants)
+			if ok {
+				appendBoth(chatPeerID(p.ChatID))
+			}
+		case *tg.UpdateUserStatus:
+			m.needUpdate.add(userPeerID(update.UserID))
+		case *tg.UpdateUserName:
+			m.needUpdate.add(userPeerID(update.UserID))
+		case *tg.UpdateUser:
+			m.needUpdate.add(userPeerID(update.UserID))
+		case *tg.UpdateUserPhone:
+			m.needUpdate.add(userPeerID(update.UserID))
+		case *tg.UpdateChatParticipantAdd:
+			appendBoth(userPeerID(update.UserID), chatPeerID(update.ChatID))
+		case *tg.UpdateChatParticipantDelete:
+			appendBoth(userPeerID(update.UserID), chatPeerID(update.ChatID))
+		case *tg.UpdateNotifySettings:
+			if p, ok := update.Peer.(*tg.NotifyPeer); ok {
+				m.needUpdate.add(peerIDFromPeerClass(p.Peer))
+			}
+		case *tg.UpdateChannel:
+			m.needUpdate.add(channelPeerID(update.ChannelID))
+		case *tg.UpdateChatParticipantAdmin:
+			m.needUpdate.add(userPeerID(update.UserID), chatPeerID(update.ChatID))
+		case *tg.UpdateChatDefaultBannedRights:
+			appendBoth(peerIDFromPeerClass(update.Peer))
+		case *tg.UpdatePeerSettings:
+			m.needUpdate.add(peerIDFromPeerClass(update.Peer))
+		case *tg.UpdatePeerBlocked:
+		case *tg.UpdateChat:
+			m.needUpdate.add(chatPeerID(update.ChatID))
+		case *tg.UpdatePeerHistoryTTL:
+			m.needUpdate.add(peerIDFromPeerClass(update.Peer))
+		case *tg.UpdateChatParticipant:
+			m.needUpdate.add(userPeerID(update.UserID), chatPeerID(update.ChatID))
+		case *tg.UpdateChannelParticipant:
+			m.needUpdate.add(userPeerID(update.UserID), channelPeerID(update.ChannelID))
+		case *tg.UpdateBotStopped:
+		case *tg.UpdateBotCommands:
+			m.needUpdate.add(userPeerID(update.BotID))
+		case *tg.UpdatePendingJoinRequests:
+			m.needUpdate.add(peerIDFromPeerClass(update.Peer))
+		case *tg.UpdateBotChatInviteRequester:
+		}
+	}
+}