Don't use MTP for PeerData::isSelf.

Telegram/SourceFiles/data/data_peer.cpp

@@ -795,6 +795,13 @@ QString PeerData::userName() const {
 	return QString();
 }
 
+bool PeerData::isSelf() const {
+	if (const auto user = asUser()) {
+		return (user->flags() & UserDataFlag::Self);
+	}
+	return false;
+}
+
 bool PeerData::isVerified() const {
 	if (const auto user = asUser()) {
 		return user->isVerified();

Telegram/SourceFiles/data/data_peer.h

@@ -164,9 +164,7 @@ public:
 	[[nodiscard]] bool isChannel() const {
 		return peerIsChannel(id);
 	}
-	[[nodiscard]] bool isSelf() const {
+	[[nodiscard]] bool isSelf() const;
-		return (input.type() == mtpc_inputPeerSelf);
-	}
 	[[nodiscard]] bool isVerified() const;
 	[[nodiscard]] bool isScam() const;
 	[[nodiscard]] bool isFake() const;

Telegram/SourceFiles/data/data_user.cpp

@@ -25,7 +25,8 @@ using UpdateFlag = Data::PeerUpdate::Flag;
 } // namespace
 
 UserData::UserData(not_null<Data::Session*> owner, PeerId id)
-: PeerData(owner, id) {
+: PeerData(owner, id)
+, _flags((id == owner->session().userPeerId()) ? Flag::Self : Flag(0)) {
 }
 
 bool UserData::canShareThisContact() const {
@@ -173,6 +174,19 @@ void UserData::setAccessHash(uint64 accessHash) {
 	}
 }
 
+void UserData::setFlags(UserDataFlags which) {
+	_flags.set((flags() & UserDataFlag::Self)
+		| (which & ~UserDataFlag::Self));
+}
+
+void UserData::addFlags(UserDataFlags which) {
+	_flags.add(which & ~UserDataFlag::Self);
+}
+
+void UserData::removeFlags(UserDataFlags which) {
+	_flags.remove(which & ~UserDataFlag::Self);
+}
+
 void UserData::setCallsStatus(CallsStatus callsStatus) {
 	if (callsStatus != _callsStatus) {
 		_callsStatus = callsStatus;

Telegram/SourceFiles/data/data_user.h

@@ -37,6 +37,7 @@ enum class UserDataFlag {
 	Support = (1 << 10),
 	CanPinMessages = (1 << 11),
 	DiscardMinPhoto = (1 << 12),
+	Self = (1 << 13),
 };
 inline constexpr bool is_flag_type(UserDataFlag) { return true; };
 using UserDataFlags = base::flags<UserDataFlag>;
@@ -68,21 +69,15 @@ public:
 	}
 	void setAccessHash(uint64 accessHash);
 
-	void setFlags(UserDataFlags which) {
-		_flags.set(which);
-	}
-	void addFlags(UserDataFlags which) {
-		_flags.add(which);
-	}
-	void removeFlags(UserDataFlags which) {
-		_flags.remove(which);
-	}
 	auto flags() const {
 		return _flags.current();
 	}
 	auto flagsValue() const {
 		return _flags.value();
 	}
+	void setFlags(UserDataFlags which);
+	void addFlags(UserDataFlags which);
+	void removeFlags(UserDataFlags which);
 
 	[[nodiscard]] bool isVerified() const {
 		return flags() & UserDataFlag::Verified;

Telegram/SourceFiles/main/main_session.cpp

@@ -78,6 +78,7 @@ Session::Session(
 , _uploader(std::make_unique<Storage::Uploader>(_api.get()))
 , _storage(std::make_unique<Storage::Facade>())
 , _data(std::make_unique<Data::Session>(this))
+, _userId(user.c_user().vid())
 , _user(_data->processUser(user))
 , _emojiStickersPack(std::make_unique<Stickers::EmojiPack>(this))
 , _diceStickersPacks(std::make_unique<Stickers::DicePacks>(this))
@@ -213,11 +214,11 @@ uint64 Session::uniqueId() const {
 }
 
 UserId Session::userId() const {
-	return peerToUser(_user->id);
+	return _userId;
 }
 
 PeerId Session::userPeerId() const {
-	return _user->id;
+	return _userId;
 }
 
 bool Session::validateSelf(UserId id) {

Telegram/SourceFiles/main/main_session.h

@@ -179,6 +179,7 @@ private:
 
 	// _data depends on _downloader / _uploader.
 	const std::unique_ptr<Data::Session> _data;
+	const UserId _userId;
 	const not_null<UserData*> _user;
 
 	// _emojiStickersPack depends on _data.