Handle ttl_period locally.

Telegram/SourceFiles/data/data_channel.cpp

@@ -749,6 +749,9 @@ void ApplyChannelUpdate(
 		channel->clearGroupCall();
 	}
 
+	if (const auto ttl = update.vttl()) {
+		channel->applyMessagesTTL(*ttl);
+	}
 	channel->setFullFlags(update.vflags().v);
 	channel->setUserpicPhoto(update.vchat_photo());
 	if (const auto migratedFrom = update.vmigrated_from_chat_id()) {

Telegram/SourceFiles/data/data_chat.cpp

@@ -84,6 +84,11 @@ bool ChatData::canEditPreHistoryHidden() const {
 	return amCreator();
 }
 
+bool ChatData::canDeleteMessages() const {
+	return amCreator()
+		|| (adminRights() & AdminRight::f_delete_messages);
+}
+
 bool ChatData::canAddMembers() const {
 	return amIn() && !amRestricted(Restriction::f_invite_users);
 }
@@ -372,6 +377,9 @@ void ApplyChatUpdate(not_null<ChatData*> chat, const MTPDchatFull &update) {
 		chat->clearGroupCall();
 	}
 
+	if (const auto ttl = update.vttl()) {
+		chat->applyMessagesTTL(*ttl);
+	}
 	if (const auto info = update.vbot_info()) {
 		for (const auto &item : info->v) {
 			item.match([&](const MTPDbotInfo &data) {

Telegram/SourceFiles/data/data_chat.h

@@ -128,16 +128,17 @@ public:
 	[[nodiscard]] AdminRights defaultAdminRights(not_null<UserData*> user);
 
 	// Like in ChannelData.
-	bool canWrite() const;
-	bool canEditInformation() const;
-	bool canEditPermissions() const;
-	bool canEditUsername() const;
-	bool canEditPreHistoryHidden() const;
-	bool canAddMembers() const;
-	bool canAddAdmins() const;
-	bool canBanMembers() const;
-	bool canSendPolls() const;
-	bool anyoneCanAddMembers() const;
+	[[nodiscard]] bool canWrite() const;
+	[[nodiscard]] bool canEditInformation() const;
+	[[nodiscard]] bool canEditPermissions() const;
+	[[nodiscard]] bool canEditUsername() const;
+	[[nodiscard]] bool canEditPreHistoryHidden() const;
+	[[nodiscard]] bool canDeleteMessages() const;
+	[[nodiscard]] bool canAddMembers() const;
+	[[nodiscard]] bool canAddAdmins() const;
+	[[nodiscard]] bool canBanMembers() const;
+	[[nodiscard]] bool canSendPolls() const;
+	[[nodiscard]] bool anyoneCanAddMembers() const;
 
 	void applyEditAdmin(not_null<UserData*> user, bool isAdmin);
 

Telegram/SourceFiles/data/data_peer.cpp

@@ -945,6 +945,35 @@ void PeerData::setLoadedStatus(LoadedStatus status) {
 	_loadedStatus = status;
 }
 
+TimeId PeerData::messagesTTL() const {
+	return (_ttlMyPeriod && _ttlPeerPeriod)
+		? std::min(_ttlMyPeriod, _ttlPeerPeriod)
+		: std::max(_ttlMyPeriod, _ttlPeerPeriod);
+}
+
+void PeerData::setMessagesTTL(
+		TimeId myPeriod,
+		TimeId peerPeriod,
+		bool oneSide) {
+	_ttlMyPeriod = myPeriod;
+	_ttlPeerPeriod = peerPeriod;
+	_ttlOneSide = oneSide;
+}
+
+void PeerData::applyMessagesTTL(const MTPPeerHistoryTTL &ttl) {
+	ttl.match([&](const MTPDpeerHistoryTTL &data) {
+		setMessagesTTL(
+			data.vttl_period().v,
+			data.vttl_period().v,
+			false);
+	}, [&](const MTPDpeerHistoryTTLPM &data) {
+		setMessagesTTL(
+			data.vmy_ttl_period().value_or_empty(),
+			data.vpeer_ttl_period().value_or_empty(),
+			data.is_my_oneside());
+	});
+}
+
 namespace Data {
 
 std::vector<ChatRestrictions> ListOfRestrictions() {

Telegram/SourceFiles/data/data_peer.h

@@ -17,6 +17,11 @@ class UserData;
 class ChatData;
 class ChannelData;
 
+using ChatAdminRight = MTPDchatAdminRights::Flag;
+using ChatRestriction = MTPDchatBannedRights::Flag;
+using ChatAdminRights = MTPDchatAdminRights::Flags;
+using ChatRestrictions = MTPDchatBannedRights::Flags;
+
 namespace Ui {
 class EmptyUserpic;
 } // namespace Ui
@@ -30,23 +35,13 @@ namespace Data {
 
 class Session;
 class GroupCall;
+class CloudImageView;
 
 int PeerColorIndex(PeerId peerId);
 int PeerColorIndex(int32 bareId);
 style::color PeerUserpicColor(PeerId peerId);
 PeerId FakePeerIdForJustName(const QString &name);
 
-} // namespace Data
-
-using ChatAdminRight = MTPDchatAdminRights::Flag;
-using ChatRestriction = MTPDchatBannedRights::Flag;
-using ChatAdminRights = MTPDchatAdminRights::Flags;
-using ChatRestrictions = MTPDchatBannedRights::Flags;
-
-namespace Data {
-
-class CloudImageView;
-
 class RestrictionCheckResult {
 public:
 	[[nodiscard]] static RestrictionCheckResult Allowed() {
@@ -386,6 +381,19 @@ public:
 	}
 	void setLoadedStatus(LoadedStatus status);
 
+	[[nodiscard]] TimeId myMessagesTTL() const {
+		return _ttlMyPeriod;
+	}
+	[[nodiscard]] TimeId peerMessagesTTL() const {
+		return _ttlPeerPeriod;
+	}
+	[[nodiscard]] bool oneSideTTL() const {
+		return _ttlOneSide;
+	}
+	[[nodiscard]] TimeId messagesTTL() const;
+	void setMessagesTTL(TimeId myPeriod, TimeId peerPeriod, bool oneSide);
+	void applyMessagesTTL(const MTPPeerHistoryTTL &ttl);
+
 	[[nodiscard]] Data::GroupCall *groupCall() const;
 
 	const PeerId id;
@@ -429,6 +437,10 @@ private:
 	base::flat_set<QChar> _nameFirstLetters;
 
 	crl::time _lastFullUpdate = 0;
+
+	TimeId _ttlMyPeriod = 0;
+	TimeId _ttlPeerPeriod = 0;
+	bool _ttlOneSide = false;
 	bool _hasPinnedMessages = false;
 
 	Settings _settings = { kSettingsUnknown };

Telegram/SourceFiles/data/data_session.cpp

@@ -1846,33 +1846,7 @@ bool Session::checkEntitiesAndViewsUpdate(const MTPDmessage &data) {
 	if (!existing) {
 		return false;
 	}
-	existing->updateSentContent({
-		qs(data.vmessage()),
-		Api::EntitiesFromMTP(
-			&session(),
-			data.ventities().value_or_empty())
-	}, data.vmedia());
-	existing->updateReplyMarkup(data.vreply_markup());
-	existing->updateForwardedInfo(data.vfwd_from());
-	existing->setViewsCount(data.vviews().value_or(-1));
-	if (const auto replies = data.vreplies()) {
-		existing->setReplies(*replies);
-	} else {
-		existing->clearReplies();
-	}
-	existing->setForwardsCount(data.vforwards().value_or(-1));
-	if (const auto reply = data.vreply_to()) {
-		reply->match([&](const MTPDmessageReplyHeader &data) {
-			existing->setReplyToTop(
-				data.vreply_to_top_id().value_or(
-					data.vreply_to_msg_id().v));
-		});
-	}
-	existing->setPostAuthor(data.vpost_author().value_or_empty());
-	existing->indexAsNewItem();
-	existing->contributeToSlowmode(data.vdate().v);
-	requestItemTextRefresh(existing);
-	updateDependentMessages(existing);
+	existing->applySentMessage(data);
 	const auto result = (existing->mainView() != nullptr);
 	if (result) {
 		stickers().checkSavedGif(existing);

Telegram/SourceFiles/data/data_user.cpp

@@ -256,6 +256,9 @@ void ApplyUserUpdate(not_null<UserData*> user, const MTPDuserFull &update) {
 		MTP_inputNotifyPeer(user->input),
 		update.vnotify_settings());
 
+	if (const auto ttl = update.vttl()) {
+		user->applyMessagesTTL(*ttl);
+	}
 	if (const auto info = update.vbot_info()) {
 		user->setBotInfo(*info);
 	} else {