From 2d1dcb36cb53f57b30473786799c77e6da3040e6 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 23 Apr 2019 13:40:14 +0400
Subject: [PATCH] Use folder_id / still_unread_count from updates.

---
 Telegram/SourceFiles/apiwrap.cpp              | 205 ++++--------------
 Telegram/SourceFiles/apiwrap.h                |   7 +-
 Telegram/SourceFiles/app.cpp                  |  15 --
 Telegram/SourceFiles/app.h                    |   2 -
 Telegram/SourceFiles/data/data_channel.cpp    | 109 ++++++++++
 Telegram/SourceFiles/data/data_channel.h      |   4 +
 Telegram/SourceFiles/data/data_chat.cpp       |  41 +++-
 Telegram/SourceFiles/data/data_chat.h         |   8 +-
 Telegram/SourceFiles/data/data_peer.cpp       |  11 +
 Telegram/SourceFiles/data/data_peer.h         |   2 +
 Telegram/SourceFiles/data/data_user.cpp       |  45 ++++
 Telegram/SourceFiles/data/data_user.h         |   6 +
 Telegram/SourceFiles/history/history.cpp      |  64 +++---
 Telegram/SourceFiles/history/history.h        |  10 +-
 Telegram/SourceFiles/history/history_item.cpp |   6 +-
 .../SourceFiles/history/history_widget.cpp    |   2 +-
 Telegram/SourceFiles/mainwidget.cpp           |  30 ++-
 17 files changed, 343 insertions(+), 224 deletions(-)

diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index 2f251066d7..714ed6d5d0 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -1184,124 +1184,24 @@ void ApiWrap::gotChatFull(
 	_session->data().processUsers(d.vusers);
 	_session->data().processChats(d.vchats);
 
-	using UpdateFlag = Notify::PeerUpdate::Flag;
-	if (const auto chat = peer->asChat()) {
-		if (d.vfull_chat.type() != mtpc_chatFull) {
-			LOG(("MTP Error: bad type in gotChatFull for chat: %1"
-				).arg(d.vfull_chat.type()));
-			return;
-		}
-		auto &f = d.vfull_chat.c_chatFull();
-		Data::ApplyChatParticipants(chat, f.vparticipants);
-		if (f.has_bot_info()) {
-			for (const auto &item : f.vbot_info.v) {
-				item.match([&](const MTPDbotInfo &data) {
-					if (const auto bot = _session->data().userLoaded(data.vuser_id.v)) {
-						bot->setBotInfo(item);
-						fullPeerUpdated().notify(bot);
-					}
-				});
-			}
-		}
-		chat->setFullFlags(f.vflags.v);
-		chat->setUserpicPhoto(f.has_chat_photo()
-			? f.vchat_photo
-			: MTPPhoto(MTP_photoEmpty(MTP_long(0))));
-		chat->setInviteLink(
-			(f.vexported_invite.type() == mtpc_chatInviteExported
-				? qs(f.vexported_invite.c_chatInviteExported().vlink)
-				: QString()));
-		if (f.has_pinned_msg_id()) {
-			chat->setPinnedMessageId(f.vpinned_msg_id.v);
+	d.vfull_chat.match([&](const MTPDchatFull &data) {
+		if (const auto chat = peer->asChat()) {
+			Data::ApplyChatUpdate(chat, data);
 		} else {
-			chat->clearPinnedMessage();
-		}
-		chat->fullUpdated();
-
-		notifySettingReceived(
-			MTP_inputNotifyPeer(peer->input),
-			f.vnotify_settings);
-	} else if (const auto channel = peer->asChannel()) {
-		if (d.vfull_chat.type() != mtpc_channelFull) {
 			LOG(("MTP Error: bad type in gotChatFull for channel: %1"
 				).arg(d.vfull_chat.type()));
-			return;
 		}
-		auto &f = d.vfull_chat.c_channelFull();
-		channel->setAvailableMinId(f.vavailable_min_id.v);
-		auto canViewAdmins = channel->canViewAdmins();
-		auto canViewMembers = channel->canViewMembers();
-		auto canEditStickers = channel->canEditStickers();
-
-		channel->setFullFlags(f.vflags.v);
-		channel->setUserpicPhoto(f.vchat_photo);
-		if (f.has_migrated_from_chat_id()) {
-			channel->addFlags(MTPDchannel::Flag::f_megagroup);
-			const auto chat = channel->owner().chat(
-				f.vmigrated_from_chat_id.v);
-			Data::ApplyMigration(chat, channel);
-		}
-		for (const auto &item : f.vbot_info.v) {
-			auto &owner = channel->owner();
-			item.match([&](const MTPDbotInfo &info) {
-				if (const auto user = owner.userLoaded(info.vuser_id.v)) {
-					user->setBotInfo(item);
-					fullPeerUpdated().notify(user);
-				}
-			});
-		}
-		channel->setAbout(qs(f.vabout));
-		channel->setMembersCount(f.has_participants_count() ? f.vparticipants_count.v : 0);
-		channel->setAdminsCount(f.has_admins_count() ? f.vadmins_count.v : 0);
-		channel->setRestrictedCount(f.has_banned_count() ? f.vbanned_count.v : 0);
-		channel->setKickedCount(f.has_kicked_count() ? f.vkicked_count.v : 0);
-		channel->setInviteLink((f.vexported_invite.type() == mtpc_chatInviteExported) ? qs(f.vexported_invite.c_chatInviteExported().vlink) : QString());
-		if (const auto history = _session->data().historyLoaded(channel)) {
-			history->clearUpTill(f.vavailable_min_id.v);
-			if (history->folderKnown()) {
-				history->applyDialogFields(
-					history->folder(),
-					f.vunread_count.v,
-					f.vread_inbox_max_id.v,
-					f.vread_outbox_max_id.v);
-			} else {
-				requestDialogEntry(history);
-			}
-		}
-		if (f.has_pinned_msg_id()) {
-			channel->setPinnedMessageId(f.vpinned_msg_id.v);
+	}, [&](const MTPDchannelFull &data) {
+		if (const auto channel = peer->asChannel()) {
+			Data::ApplyChannelUpdate(channel, data);
 		} else {
-			channel->clearPinnedMessage();
+			LOG(("MTP Error: bad type in gotChatFull for chat: %1"
+				).arg(d.vfull_chat.type()));
 		}
-		if (channel->isMegagroup()) {
-			auto stickersChanged = (canEditStickers != channel->canEditStickers());
-			auto stickerSet = (f.has_stickerset() ? &f.vstickerset.c_stickerSet() : nullptr);
-			auto newSetId = (stickerSet ? stickerSet->vid.v : 0);
-			auto oldSetId = (channel->mgInfo->stickerSet.type() == mtpc_inputStickerSetID)
-				? channel->mgInfo->stickerSet.c_inputStickerSetID().vid.v
-				: 0;
-			if (oldSetId != newSetId) {
-				channel->mgInfo->stickerSet = stickerSet
-					? MTP_inputStickerSetID(stickerSet->vid, stickerSet->vaccess_hash)
-					: MTP_inputStickerSetEmpty();
-				stickersChanged = true;
-			}
-			if (stickersChanged) {
-				Notify::peerUpdatedDelayed(channel, UpdateFlag::ChannelStickersChanged);
-			}
-		}
-		channel->fullUpdated();
-
-		if (canViewAdmins != channel->canViewAdmins()
-			|| canViewMembers != channel->canViewMembers()) {
-			Notify::peerUpdatedDelayed(channel, UpdateFlag::RightsChanged);
-		}
-
-		notifySettingReceived(MTP_inputNotifyPeer(peer->input), f.vnotify_settings);
-	}
+	});
 
 	if (req) {
-		auto i = _fullPeerRequests.find(peer);
+		const auto i = _fullPeerRequests.find(peer);
 		if (i != _fullPeerRequests.cend() && i.value() == req) {
 			_fullPeerRequests.erase(i);
 		}
@@ -1314,7 +1214,6 @@ void ApiWrap::gotUserFull(
 		const MTPUserFull &result,
 		mtpRequestId req) {
 	const auto &d = result.c_userFull();
-
 	if (user == _session->user() && !_session->validateSelf(d.vuser)) {
 		constexpr auto kRequestUserAgainTimeout = crl::time(10000);
 		App::CallDelayed(kRequestUserAgainTimeout, _session, [=] {
@@ -1322,34 +1221,10 @@ void ApiWrap::gotUserFull(
 		});
 		return;
 	}
-	_session->data().processUser(d.vuser);
-	if (d.has_profile_photo()) {
-		_session->data().processPhoto(d.vprofile_photo);
-	}
-	App::feedUserLink(MTP_int(peerToUser(user->id)), d.vlink.c_contacts_link().vmy_link, d.vlink.c_contacts_link().vforeign_link);
-	if (App::main()) {
-		notifySettingReceived(MTP_inputNotifyPeer(user->input), d.vnotify_settings);
-	}
-
-	if (d.has_bot_info()) {
-		user->setBotInfo(d.vbot_info);
-	} else {
-		user->setBotInfoVersion(-1);
-	}
-	if (d.has_pinned_msg_id()) {
-		user->setPinnedMessageId(d.vpinned_msg_id.v);
-	} else {
-		user->clearPinnedMessage();
-	}
-	user->setFullFlags(d.vflags.v);
-	user->setBlockStatus(d.is_blocked() ? UserData::BlockStatus::Blocked : UserData::BlockStatus::NotBlocked);
-	user->setCallsStatus(d.is_phone_calls_private() ? UserData::CallsStatus::Private : d.is_phone_calls_available() ? UserData::CallsStatus::Enabled : UserData::CallsStatus::Disabled);
-	user->setAbout(d.has_about() ? qs(d.vabout) : QString());
-	user->setCommonChatsCount(d.vcommon_chats_count.v);
-	user->fullUpdated();
+	Data::ApplyUserUpdate(user, d);
 
 	if (req) {
-		auto i = _fullPeerRequests.find(user);
+		const auto i = _fullPeerRequests.find(user);
 		if (i != _fullPeerRequests.cend() && i.value() == req) {
 			_fullPeerRequests.erase(i);
 		}
@@ -2356,18 +2231,20 @@ void ApiWrap::requestNotifySettings(const MTPInputNotifyPeer &peer) {
 	if (_notifySettingRequests.find(key) != end(_notifySettingRequests)) {
 		return;
 	}
-	auto requestId = request(MTPaccount_GetNotifySettings(
+	const auto requestId = request(MTPaccount_GetNotifySettings(
 		peer
 	)).done([=](const MTPPeerNotifySettings &result) {
-		notifySettingReceived(peer, result);
+		applyNotifySettings(peer, result);
 		_notifySettingRequests.erase(key);
 	}).fail([=](const RPCError &error) {
-		notifySettingReceived(peer, MTP_peerNotifySettings(
-			MTP_flags(0),
-			MTPBool(),
-			MTPBool(),
-			MTPint(),
-			MTPstring()));
+		applyNotifySettings(
+			peer,
+			MTP_peerNotifySettings(
+				MTP_flags(0),
+				MTPBool(),
+				MTPBool(),
+				MTPint(),
+				MTPstring()));
 		_notifySettingRequests.erase(key);
 	}).send();
 
@@ -2765,7 +2642,7 @@ void ApiWrap::checkQuitPreventFinished() {
 	}
 }
 
-void ApiWrap::notifySettingReceived(
+void ApiWrap::applyNotifySettings(
 		MTPInputNotifyPeer notifyPeer,
 		const MTPPeerNotifySettings &settings) {
 	switch (notifyPeer.type()) {
@@ -3744,17 +3621,18 @@ void ApiWrap::applyUpdateNoPtsCheck(const MTPUpdate &update) {
 	} break;
 
 	case mtpc_updateReadMessagesContents: {
-		auto &d = update.c_updateReadMessagesContents();
+		const auto &d = update.c_updateReadMessagesContents();
 		auto possiblyReadMentions = base::flat_set<MsgId>();
 		for (const auto &msgId : d.vmessages.v) {
-			if (auto item = App::histItemById(NoChannel, msgId.v)) {
+			if (const auto item = App::histItemById(NoChannel, msgId.v)) {
 				if (item->isUnreadMedia() || item->isUnreadMention()) {
 					item->markMediaRead();
 					_session->data().requestItemRepaint(item);
 
-					if (item->out() && item->history()->peer->isUser()) {
-						auto when = App::main()->requestingDifference() ? 0 : unixtime();
-						item->history()->peer->asUser()->madeAction(when);
+					if (item->out()
+						&& item->history()->peer->isUser()
+						&& !App::main()->requestingDifference()) {
+						item->history()->peer->asUser()->madeAction(unixtime());
 					}
 				}
 			} else {
@@ -3766,15 +3644,28 @@ void ApiWrap::applyUpdateNoPtsCheck(const MTPUpdate &update) {
 	} break;
 
 	case mtpc_updateReadHistoryInbox: {
-		auto &d = update.c_updateReadHistoryInbox();
-		App::feedInboxRead(peerFromMTP(d.vpeer), d.vmax_id.v);
+		const auto &d = update.c_updateReadHistoryInbox();
+		const auto peer = peerFromMTP(d.vpeer);
+		if (const auto history = _session->data().historyLoaded(peer)) {
+			const auto folderId = d.has_folder_id() ? d.vfolder_id.v : 0;
+			history->applyInboxReadUpdate(
+				folderId,
+				d.vmax_id.v,
+				d.vstill_unread_count.v);
+		}
 	} break;
 
 	case mtpc_updateReadHistoryOutbox: {
-		auto &d = update.c_updateReadHistoryOutbox();
-		auto peerId = peerFromMTP(d.vpeer);
-		auto when = App::main()->requestingDifference() ? 0 : unixtime();
-		App::feedOutboxRead(peerId, d.vmax_id.v, when);
+		const auto &d = update.c_updateReadHistoryOutbox();
+		const auto peer = peerFromMTP(d.vpeer);
+		if (const auto history = _session->data().historyLoaded(peer)) {
+			history->outboxRead(d.vmax_id.v);
+			if (!App::main()->requestingDifference()) {
+				if (const auto user = history->peer->asUser()) {
+					user->madeAction(unixtime());
+				}
+			}
+		}
 	} break;
 
 	case mtpc_updateWebPage: {
diff --git a/Telegram/SourceFiles/apiwrap.h b/Telegram/SourceFiles/apiwrap.h
index 24315594ac..7b7a997828 100644
--- a/Telegram/SourceFiles/apiwrap.h
+++ b/Telegram/SourceFiles/apiwrap.h
@@ -63,6 +63,9 @@ public:
 	ApiWrap(not_null<AuthSession*> session);
 
 	void applyUpdates(const MTPUpdates &updates, uint64 sentMessageRandomId = 0);
+	void applyNotifySettings(
+		MTPInputNotifyPeer peer,
+		const MTPPeerNotifySettings &settings);
 
 	void savePinnedOrder(Data::Folder *folder);
 	void toggleHistoryArchived(
@@ -524,10 +527,6 @@ private:
 		MsgRange range,
 		const MTPupdates_ChannelDifference &result);
 
-	void notifySettingReceived(
-		MTPInputNotifyPeer peer,
-		const MTPPeerNotifySettings &settings);
-
 	void stickerSetDisenabled(mtpRequestId requestId);
 	void stickersSaveOrder();
 
diff --git a/Telegram/SourceFiles/app.cpp b/Telegram/SourceFiles/app.cpp
index 5ebfd63c2f..16f3328189 100644
--- a/Telegram/SourceFiles/app.cpp
+++ b/Telegram/SourceFiles/app.cpp
@@ -230,21 +230,6 @@ namespace App {
 		return feedMsgs(msgs.v, type);
 	}
 
-	void feedInboxRead(const PeerId &peer, MsgId upTo) {
-		if (const auto history = Auth().data().historyLoaded(peer)) {
-			history->inboxRead(upTo);
-		}
-	}
-
-	void feedOutboxRead(const PeerId &peer, MsgId upTo, TimeId when) {
-		if (auto history = Auth().data().historyLoaded(peer)) {
-			history->outboxRead(upTo);
-			if (const auto user = history->peer->asUser()) {
-				user->madeAction(when);
-			}
-		}
-	}
-
 	inline MsgsData *fetchMsgsData(ChannelId channelId, bool insert = true) {
 		if (channelId == NoChannel) return &msgsData;
 		ChannelMsgsData::iterator i = channelMsgsData.find(channelId);
diff --git a/Telegram/SourceFiles/app.h b/Telegram/SourceFiles/app.h
index f7051d83c0..c1fd3b6283 100644
--- a/Telegram/SourceFiles/app.h
+++ b/Telegram/SourceFiles/app.h
@@ -72,8 +72,6 @@ namespace App {
 	void checkSavedGif(HistoryItem *item);
 	void feedMsgs(const QVector<MTPMessage> &msgs, NewMessageType type);
 	void feedMsgs(const MTPVector<MTPMessage> &msgs, NewMessageType type);
-	void feedInboxRead(const PeerId &peer, MsgId upTo);
-	void feedOutboxRead(const PeerId &peer, MsgId upTo, TimeId when);
 	void feedWereDeleted(ChannelId channelId, const QVector<MTPint> &msgsIds);
 	void feedUserLink(MTPint userId, const MTPContactLink &myLink, const MTPContactLink &foreignLink);
 
diff --git a/Telegram/SourceFiles/data/data_channel.cpp b/Telegram/SourceFiles/data/data_channel.cpp
index b58b87577b..20f7a471db 100644
--- a/Telegram/SourceFiles/data/data_channel.cpp
+++ b/Telegram/SourceFiles/data/data_channel.cpp
@@ -13,6 +13,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_chat.h"
 #include "data/data_session.h"
 #include "data/data_folder.h"
+#include "history/history.h"
 #include "observer_peer.h"
 #include "auth_session.h"
 #include "apiwrap.h"
@@ -549,4 +550,112 @@ void ApplyChannelUpdate(
 	channel->setDefaultRestrictions(update.vdefault_banned_rights);
 }
 
+void ApplyChannelUpdate(
+		not_null<ChannelData*> channel,
+		const MTPDchannelFull &update) {
+	channel->setAvailableMinId(update.vavailable_min_id.v);
+	auto canViewAdmins = channel->canViewAdmins();
+	auto canViewMembers = channel->canViewMembers();
+	auto canEditStickers = channel->canEditStickers();
+
+	channel->setFullFlags(update.vflags.v);
+	channel->setUserpicPhoto(update.vchat_photo);
+	if (update.has_migrated_from_chat_id()) {
+		channel->addFlags(MTPDchannel::Flag::f_megagroup);
+		const auto chat = channel->owner().chat(
+			update.vmigrated_from_chat_id.v);
+		Data::ApplyMigration(chat, channel);
+	}
+	for (const auto &item : update.vbot_info.v) {
+		auto &owner = channel->owner();
+		item.match([&](const MTPDbotInfo &info) {
+			if (const auto user = owner.userLoaded(info.vuser_id.v)) {
+				user->setBotInfo(item);
+				channel->session().api().fullPeerUpdated().notify(user);
+			}
+		});
+	}
+	channel->setAbout(qs(update.vabout));
+	channel->setMembersCount(update.has_participants_count()
+		? update.vparticipants_count.v
+		: 0);
+	channel->setAdminsCount(update.has_admins_count()
+		? update.vadmins_count.v
+		: 0);
+	channel->setRestrictedCount(update.has_banned_count()
+		? update.vbanned_count.v
+		: 0);
+	channel->setKickedCount(update.has_kicked_count()
+		? update.vkicked_count.v
+		: 0);
+	channel->setInviteLink(update.vexported_invite.match([&](
+		const MTPDchatInviteExported & data) {
+		return qs(data.vlink);
+	}, [&](const MTPDchatInviteEmpty &) {
+		return QString();
+	}));
+	if (const auto history = channel->owner().historyLoaded(channel)) {
+		history->clearUpTill(update.vavailable_min_id.v);
+
+		const auto folderId = update.has_folder_id()
+			? update.vfolder_id.v
+			: 0;
+		const auto folder = folderId
+			? channel->owner().folderLoaded(folderId)
+			: nullptr;
+		if (folder && history->folder() != folder) {
+			// If history folder is unknown or not synced, request both.
+			channel->session().api().requestDialogEntry(history);
+			channel->session().api().requestDialogEntry(folder);
+		} else if (!history->folderKnown()
+			|| channel->pts() != update.vpts.v) {
+			channel->session().api().requestDialogEntry(history);
+		} else {
+			history->applyDialogFields(
+				history->folder(),
+				update.vunread_count.v,
+				update.vread_inbox_max_id.v,
+				update.vread_outbox_max_id.v);
+		}
+	}
+	if (update.has_pinned_msg_id()) {
+		channel->setPinnedMessageId(update.vpinned_msg_id.v);
+	} else {
+		channel->clearPinnedMessage();
+	}
+	if (channel->isMegagroup()) {
+		const auto stickerSet = update.has_stickerset()
+			? &update.vstickerset.c_stickerSet()
+			: nullptr;
+		const auto newSetId = (stickerSet ? stickerSet->vid.v : 0);
+		const auto oldSetId = (channel->mgInfo->stickerSet.type() == mtpc_inputStickerSetID)
+			? channel->mgInfo->stickerSet.c_inputStickerSetID().vid.v
+			: 0;
+		const auto stickersChanged = (canEditStickers != channel->canEditStickers())
+			|| (oldSetId != newSetId);
+		if (oldSetId != newSetId) {
+			channel->mgInfo->stickerSet = stickerSet
+				? MTP_inputStickerSetID(stickerSet->vid, stickerSet->vaccess_hash)
+				: MTP_inputStickerSetEmpty();
+		}
+		if (stickersChanged) {
+			Notify::peerUpdatedDelayed(
+				channel,
+				Notify::PeerUpdate::Flag::ChannelStickersChanged);
+		}
+	}
+	channel->fullUpdated();
+
+	if (canViewAdmins != channel->canViewAdmins()
+		|| canViewMembers != channel->canViewMembers()) {
+		Notify::peerUpdatedDelayed(
+			channel,
+			Notify::PeerUpdate::Flag::RightsChanged);
+	}
+
+	channel->session().api().applyNotifySettings(
+		MTP_inputNotifyPeer(channel->input),
+		update.vnotify_settings);
+}
+
 } // namespace Data
diff --git a/Telegram/SourceFiles/data/data_channel.h b/Telegram/SourceFiles/data/data_channel.h
index 748f5cbce9..972069dcfa 100644
--- a/Telegram/SourceFiles/data/data_channel.h
+++ b/Telegram/SourceFiles/data/data_channel.h
@@ -394,4 +394,8 @@ void ApplyChannelUpdate(
 	not_null<ChannelData*> channel,
 	const MTPDupdateChatDefaultBannedRights &update);
 
+void ApplyChannelUpdate(
+	not_null<ChannelData*> channel,
+	const MTPDchannelFull &update);
+
 } // namespace Data
diff --git a/Telegram/SourceFiles/data/data_chat.cpp b/Telegram/SourceFiles/data/data_chat.cpp
index 1c2092d1c2..d4259b3224 100644
--- a/Telegram/SourceFiles/data/data_chat.cpp
+++ b/Telegram/SourceFiles/data/data_chat.cpp
@@ -186,7 +186,7 @@ namespace Data {
 void ApplyChatUpdate(
 		not_null<ChatData*> chat,
 		const MTPDupdateChatParticipants &update) {
-	ApplyChatParticipants(chat, update.vparticipants);
+	ApplyChatUpdate(chat, update.vparticipants);
 }
 
 void ApplyChatUpdate(
@@ -317,7 +317,44 @@ void ApplyChatUpdate(
 	chat->setDefaultRestrictions(update.vdefault_banned_rights);
 }
 
-void ApplyChatParticipants(
+void ApplyChatUpdate(not_null<ChatData*> chat, const MTPDchatFull &update) {
+	ApplyChatUpdate(chat, update.vparticipants);
+
+	if (update.has_bot_info()) {
+		for (const auto &item : update.vbot_info.v) {
+			item.match([&](const MTPDbotInfo &data) {
+				const auto userId = data.vuser_id.v;
+				if (const auto bot = chat->owner().userLoaded(userId)) {
+					bot->setBotInfo(item);
+					chat->session().api().fullPeerUpdated().notify(bot);
+				}
+			});
+		}
+	}
+	chat->setFullFlags(update.vflags.v);
+	chat->setUserpicPhoto(update.has_chat_photo()
+		? update.vchat_photo
+		: MTPPhoto(MTP_photoEmpty(MTP_long(0))));
+	chat->setInviteLink(update.vexported_invite.match([&](
+			const MTPDchatInviteExported &data) {
+		return qs(data.vlink);
+	}, [&](const MTPDchatInviteEmpty &) {
+		return QString();
+	}));
+	if (update.has_pinned_msg_id()) {
+		chat->setPinnedMessageId(update.vpinned_msg_id.v);
+	} else {
+		chat->clearPinnedMessage();
+	}
+	chat->checkFolder(update.has_folder_id() ? update.vfolder_id.v : 0);
+	chat->fullUpdated();
+
+	chat->session().api().applyNotifySettings(
+		MTP_inputNotifyPeer(chat->input),
+		update.vnotify_settings);
+}
+
+void ApplyChatUpdate(
 		not_null<ChatData*> chat,
 		const MTPChatParticipants &participants) {
 	participants.match([&](const MTPDchatParticipantsForbidden &data) {
diff --git a/Telegram/SourceFiles/data/data_chat.h b/Telegram/SourceFiles/data/data_chat.h
index 58919e6429..051091c7a6 100644
--- a/Telegram/SourceFiles/data/data_chat.h
+++ b/Telegram/SourceFiles/data/data_chat.h
@@ -207,9 +207,11 @@ void ApplyChatUpdate(
 void ApplyChatUpdate(
 	not_null<ChatData*> chat,
 	const MTPDupdateChatDefaultBannedRights &update);
-
-void ApplyChatParticipants(
+void ApplyChatUpdate(
 	not_null<ChatData*> chat,
-	const MTPChatParticipants &participants);
+	const MTPDchatFull &update);
+void ApplyChatUpdate(
+	not_null<ChatData*> chat,
+	const MTPChatParticipants &update);
 
 } // namespace Data
diff --git a/Telegram/SourceFiles/data/data_peer.cpp b/Telegram/SourceFiles/data/data_peer.cpp
index f0e685930a..4e5ee73dc3 100644
--- a/Telegram/SourceFiles/data/data_peer.cpp
+++ b/Telegram/SourceFiles/data/data_peer.cpp
@@ -416,6 +416,17 @@ bool PeerData::setAbout(const QString &newAbout) {
 	return true;
 }
 
+void PeerData::checkFolder(FolderId folderId) {
+	const auto folder = folderId
+		? owner().folderLoaded(folderId)
+		: nullptr;
+	if (const auto history = owner().historyLoaded(this)) {
+		if (folder && history->folder() != folder) {
+			session().api().requestDialogEntry(history);
+		}
+	}
+}
+
 void PeerData::fillNames() {
 	_nameWords.clear();
 	_nameFirstLetters.clear();
diff --git a/Telegram/SourceFiles/data/data_peer.h b/Telegram/SourceFiles/data/data_peer.h
index c0d01f06a4..e12f5323ee 100644
--- a/Telegram/SourceFiles/data/data_peer.h
+++ b/Telegram/SourceFiles/data/data_peer.h
@@ -282,6 +282,8 @@ public:
 		return _about;
 	}
 
+	void checkFolder(FolderId folderId);
+
 	enum LoadedStatus {
 		NotLoaded = 0x00,
 		MinimalLoaded = 0x01,
diff --git a/Telegram/SourceFiles/data/data_user.cpp b/Telegram/SourceFiles/data/data_user.cpp
index cba4c37ef7..60801e909e 100644
--- a/Telegram/SourceFiles/data/data_user.cpp
+++ b/Telegram/SourceFiles/data/data_user.cpp
@@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "storage/localstorage.h"
 #include "data/data_session.h"
 #include "ui/text_options.h"
+#include "apiwrap.h"
 #include "lang/lang_keys.h"
 
 namespace {
@@ -252,3 +253,47 @@ bool UserData::hasCalls() const {
 	return (callsStatus() != CallsStatus::Disabled)
 		&& (callsStatus() != CallsStatus::Unknown);
 }
+
+namespace Data {
+
+void ApplyUserUpdate(not_null<UserData*> user, const MTPDuserFull &update) {
+	user->owner().processUser(update.vuser);
+	if (update.has_profile_photo()) {
+		user->owner().processPhoto(update.vprofile_photo);
+	}
+	update.vlink.match([&](const MTPDcontacts_link & link) {
+		App::feedUserLink(
+			MTP_int(peerToUser(user->id)),
+			link.vmy_link,
+			link.vforeign_link);
+	});
+	user->session().api().applyNotifySettings(
+		MTP_inputNotifyPeer(user->input),
+		update.vnotify_settings);
+
+	if (update.has_bot_info()) {
+		user->setBotInfo(update.vbot_info);
+	} else {
+		user->setBotInfoVersion(-1);
+	}
+	if (update.has_pinned_msg_id()) {
+		user->setPinnedMessageId(update.vpinned_msg_id.v);
+	} else {
+		user->clearPinnedMessage();
+	}
+	user->setFullFlags(update.vflags.v);
+	user->setBlockStatus(update.is_blocked()
+		? UserData::BlockStatus::Blocked
+		: UserData::BlockStatus::NotBlocked);
+	user->setCallsStatus(update.is_phone_calls_private()
+		? UserData::CallsStatus::Private
+		: update.is_phone_calls_available()
+		? UserData::CallsStatus::Enabled
+		: UserData::CallsStatus::Disabled);
+	user->setAbout(update.has_about() ? qs(update.vabout) : QString());
+	user->setCommonChatsCount(update.vcommon_chats_count.v);
+	user->checkFolder(update.has_folder_id() ? update.vfolder_id.v : 0);
+	user->fullUpdated();
+}
+
+} // namespace Data
diff --git a/Telegram/SourceFiles/data/data_user.h b/Telegram/SourceFiles/data/data_user.h
index a2bc54b2d4..7a0fe63cc8 100644
--- a/Telegram/SourceFiles/data/data_user.h
+++ b/Telegram/SourceFiles/data/data_user.h
@@ -227,3 +227,9 @@ private:
 		= 0xFFFFFFFFFFFFFFFFULL;
 
 };
+
+namespace Data {
+
+void ApplyUserUpdate(not_null<UserData*> user, const MTPDuserFull &update);
+
+} // namespace Data
diff --git a/Telegram/SourceFiles/history/history.cpp b/Telegram/SourceFiles/history/history.cpp
index c78151ff5f..742aa40ac4 100644
--- a/Telegram/SourceFiles/history/history.cpp
+++ b/Telegram/SourceFiles/history/history.cpp
@@ -173,7 +173,7 @@ void History::itemVanished(not_null<HistoryItem*> item) {
 	if ((!item->out() || item->isPost())
 		&& item->unread()
 		&& unreadCount() > 0) {
-		changeUnreadCount(-1);
+		setUnreadCount(unreadCount() - 1);
 	}
 	if (peer->pinnedMessageId() == item->id) {
 		peer->clearPinnedMessage();
@@ -1494,8 +1494,8 @@ void History::addToSharedMedia(
 	}
 }
 
-int History::countUnread(MsgId upTo) {
-	int result = 0;
+std::optional<int> History::countUnread(MsgId upTo) const {
+	auto result = 0;
 	for (auto i = blocks.cend(), e = blocks.cbegin(); i != e;) {
 		--i;
 		const auto &messages = (*i)->messages;
@@ -1503,13 +1503,13 @@ int History::countUnread(MsgId upTo) {
 			--j;
 			const auto item = (*j)->data();
 			if (item->id > 0 && item->id <= upTo) {
-				break;
-			} else if (!item->out() && item->unread() && item->id > upTo) {
+				return result;
+			} else if (!item->out() && item->unread()) {
 				++result;
 			}
 		}
 	}
-	return result;
+	return std::nullopt;
 }
 
 void History::calculateFirstUnreadMessage() {
@@ -1539,19 +1539,41 @@ void History::calculateFirstUnreadMessage() {
 
 MsgId History::readInbox() {
 	const auto upTo = msgIdForRead();
-	changeUnreadCount(-unreadCount());
+	setUnreadCount(0);
 	if (upTo) {
 		inboxRead(upTo);
 	}
 	return upTo;
 }
 
-void History::inboxRead(MsgId upTo) {
-	if (const auto nowUnreadCount = unreadCount()) {
-		if (loadedAtBottom()) {
-			App::main()->historyToDown(this);
-		}
-		changeUnreadCount(countUnread(upTo) - nowUnreadCount);
+void History::applyInboxReadUpdate(
+		FolderId folderId,
+		MsgId upTo,
+		int stillUnread,
+		int32 channelPts) {
+	const auto folder = folderId ? owner().folderLoaded(folderId) : nullptr;
+	if (folder && this->folder() != folder) {
+		// If history folder is unknown or not synced, request both.
+		session().api().requestDialogEntry(this);
+		session().api().requestDialogEntry(folder);
+	}
+	if (!peer->isChannel() || peer->asChannel()->pts() == channelPts) {
+		inboxRead(upTo, stillUnread);
+	} else {
+		inboxRead(upTo);
+	}
+}
+
+void History::inboxRead(MsgId upTo, std::optional<int> stillUnread) {
+	if (unreadCount() > 0 && loadedAtBottom()) {
+		App::main()->historyToDown(this);
+	}
+	if (stillUnread) {
+		setUnreadCount(*stillUnread);
+	} else if (const auto still = countUnread(upTo)) {
+		setUnreadCount(*still);
+	} else {
+		session().api().requestDialogEntry(this);
 	}
 	setInboxReadTill(upTo);
 	updateChatListEntry();
@@ -1679,18 +1701,6 @@ bool History::unreadMark() const {
 	return _unreadMark;
 }
 
-void History::changeUnreadCount(int delta) {
-	if (_unreadCount) {
-		setUnreadCount(std::max(*_unreadCount + delta, 0));
-	}
-	//if (const auto channel = peer->asChannel()) { // #feed
-	//	if (const auto feed = channel->feed()) {
-	//		const auto mutedCountDelta = mute() ? delta : 0;
-	//		feed->unreadCountChanged(delta, mutedCountDelta);
-	//	}
-	//}
-}
-
 bool History::mute() const {
 	return _mute;
 }
@@ -2449,7 +2459,7 @@ bool History::toImportant() const {
 
 void History::unknownMessageDeleted(MsgId messageId) {
 	if (_inboxReadBefore && messageId >= *_inboxReadBefore) {
-		changeUnreadCount(-1);
+		session().api().requestDialogEntry(this);
 	}
 }
 
@@ -2993,7 +3003,7 @@ void History::clear(ClearType type) {
 	} else {
 		_notifications.clear();
 		owner().notifyHistoryCleared(this);
-		changeUnreadCount(-unreadCount());
+		setUnreadCount(0);
 		if (type == ClearType::DeleteChat) {
 			setLastMessage(nullptr);
 		} else if (_lastMessage && *_lastMessage) {
diff --git a/Telegram/SourceFiles/history/history.h b/Telegram/SourceFiles/history/history.h
index 440414b601..2c7bd6802e 100644
--- a/Telegram/SourceFiles/history/history.h
+++ b/Telegram/SourceFiles/history/history.h
@@ -154,9 +154,13 @@ public:
 
 	void newItemAdded(not_null<HistoryItem*> item);
 
-	int countUnread(MsgId upTo);
 	MsgId readInbox();
-	void inboxRead(MsgId upTo);
+	void applyInboxReadUpdate(
+		FolderId folderId,
+		MsgId upTo,
+		int stillUnread,
+		int32 channelPts = 0);
+	void inboxRead(MsgId upTo, std::optional<int> stillUnread = {});
 	void inboxRead(not_null<const HistoryItem*> wasRead);
 	void outboxRead(MsgId upTo);
 	void outboxRead(not_null<const HistoryItem*> wasRead);
@@ -166,7 +170,6 @@ public:
 	int unreadCount() const;
 	bool unreadCountKnown() const;
 	void setUnreadCount(int newUnreadCount);
-	void changeUnreadCount(int delta);
 	void setUnreadMark(bool unread);
 	bool unreadMark() const;
 	int unreadCountForBadge() const; // unreadCount || unreadMark ? 1 : 0.
@@ -456,6 +459,7 @@ private:
 	HistoryItem *lastAvailableMessage() const;
 	void getNextFirstUnreadMessage();
 	bool nonEmptyCountMoreThan(int count) const;
+	std::optional<int> countUnread(MsgId upTo) const;
 
 	// Creates if necessary a new block for adding item.
 	// Depending on isBuildingFrontBlock() gets front or back block.
diff --git a/Telegram/SourceFiles/history/history_item.cpp b/Telegram/SourceFiles/history/history_item.cpp
index 16c73b16d3..35deae8cb1 100644
--- a/Telegram/SourceFiles/history/history_item.cpp
+++ b/Telegram/SourceFiles/history/history_item.cpp
@@ -643,7 +643,9 @@ bool HistoryItem::needCheck() const {
 
 bool HistoryItem::unread() const {
 	// Messages from myself are always read.
-	if (history()->peer->isSelf()) return false;
+	if (history()->peer->isSelf()) {
+		return false;
+	}
 
 	if (out()) {
 		// Outgoing messages in converted chats are always read.
@@ -659,7 +661,7 @@ bool HistoryItem::unread() const {
 				if (user->botInfo) {
 					return false;
 				}
-			} else if (auto channel = history()->peer->asChannel()) {
+			} else if (const auto channel = history()->peer->asChannel()) {
 				if (!channel->isMegagroup()) {
 					return false;
 				}
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index 505b3b81d4..3601e84249 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -2196,7 +2196,7 @@ void HistoryWidget::newUnreadMsg(
 	}
 	Auth().notifications().schedule(history, item);
 	if (history->unreadCountKnown()) {
-		history->changeUnreadCount(1);
+		history->setUnreadCount(history->unreadCount() + 1);
 	} else {
 		Auth().api().requestDialogEntry(history);
 	}
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index b5ec3c2e4a..e55260b89c 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -3951,17 +3951,31 @@ void MainWidget::feedUpdate(const MTPUpdate &update) {
 	} break;
 
 	case mtpc_updateReadChannelInbox: {
-		auto &d = update.c_updateReadChannelInbox();
-		App::feedInboxRead(peerFromChannel(d.vchannel_id.v), d.vmax_id.v);
+		const auto &d = update.c_updateReadChannelInbox();
+		const auto peer = peerFromChannel(d.vchannel_id.v);
+		if (const auto history = session().data().historyLoaded(peer)) {
+			const auto folderId = d.has_folder_id() ? d.vfolder_id.v : 0;
+			history->applyInboxReadUpdate(
+				folderId,
+				d.vmax_id.v,
+				d.vstill_unread_count.v,
+				d.vpts.v);
+		}
 	} break;
 
 	case mtpc_updateReadChannelOutbox: {
-		auto &d = update.c_updateReadChannelOutbox();
-		auto peerId = peerFromChannel(d.vchannel_id.v);
-		auto when = requestingDifference() ? 0 : unixtime();
-		App::feedOutboxRead(peerId, d.vmax_id.v, when);
-		if (_history->peer() && _history->peer()->id == peerId) {
-			_history->update();
+		const auto &d = update.c_updateReadChannelOutbox();
+		const auto peer = peerFromChannel(d.vchannel_id.v);
+		if (const auto history = session().data().historyLoaded(peer)) {
+			history->outboxRead(d.vmax_id.v);
+			if (!requestingDifference()) {
+				if (const auto user = history->peer->asUser()) {
+					user->madeAction(unixtime());
+				}
+			}
+			if (_history->peer() && _history->peer()->id == peer) {
+				_history->update();
+			}
 		}
 	} break;