Handle located groups as public.

Telegram/Resources/langs/lang.strings

@@ -780,6 +780,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_info_username_label" = "Username";
 "lng_info_bio_label" = "Bio";
 "lng_info_link_label" = "Link";
+"lng_info_location_label" = "Location";
 "lng_info_about_label" = "About";
 "lng_info_user_title" = "User Info";
 "lng_info_bot_title" = "Bot Info";
@@ -844,6 +845,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 "lng_manage_peer_group_type" = "Group type";
 "lng_manage_peer_channel_type" = "Channel type";
+"lng_manage_peer_link_type" = "Link type";
+"lng_manage_peer_link_permanent" = "Permanent link";
+"lng_manage_peer_link_invite" = "Invite link";
 "lng_manage_private_group_title" = "Private";
 "lng_manage_public_group_title" = "Public";
 "lng_manage_private_peer_title" = "Private";
@@ -924,6 +928,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_create_public_group_about" = "Anyone can find the group in search and join, chat history is available to everybody";
 "lng_create_private_group_title" = "Private Group";
 "lng_create_private_group_about" = "People can only join if they were invited or have an invite link";
+"lng_create_permanent_link_title" = "Permanent link";
+"lng_create_invite_link_title" = "Invite link";
+"lng_create_invite_link_about" = "People can join if they were invited, have an invite link, or from \"Groups nearby\"";
+
 "lng_create_group_skip" = "Skip";
 
 "lng_create_channel_link_about" = "You can use a-z, 0-9 and underscores.\nMinimum length is 5 characters.";
@@ -1048,6 +1056,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_channels_too_much_public_revoke_confirm_channel" = "Are you sure you want to revoke the link {link}?\n\nThe channel «{group}» will become private.";
 "lng_channels_too_much_public_revoke" = "Revoke";
 "lng_channels_too_much_public_other" = "Sorry, the target user has too many public groups or channels already. Please ask them to make one of their existing groups or channels private first.";
+"lng_channels_too_much_located_other" = "Sorry, the target user has too many location-based groups already. Please ask them to delete or transfer one of their existing ones first.";
 
 "lng_group_invite_bad_link" = "This invite link is broken or has expired.";
 "lng_group_invite_join" = "Join";

Telegram/SourceFiles/apiwrap.cpp

@@ -691,11 +691,11 @@ QString ApiWrap::exportDirectMessageLink(not_null<HistoryItem*> item) {
 	const auto itemId = item->fullId();
 	const auto channel = item->history()->peer->asChannel();
 	const auto fallback = [&] {
-		const auto base = channel->isPublic()
+		const auto base = channel->hasUsername()
 			? channel->username
 			: "c/" + QString::number(channel->bareId());
 		const auto query = base + '/' + QString::number(item->id);
-		if (channel->isPublic() && !channel->isMegagroup()) {
+		if (channel->hasUsername() && !channel->isMegagroup()) {
 			if (const auto media = item->media()) {
 				if (const auto document = media->document()) {
 					if (document->isVideoMessage()) {

Telegram/SourceFiles/boxes/peers/edit_participant_box.cpp

@@ -537,6 +537,8 @@ void EditAdminBox::sendTransferRequestFrom(
 		const auto problem = [&] {
 			if (type == qstr("CHANNELS_ADMIN_PUBLIC_TOO_MUCH")) {
 				return tr::lng_channels_too_much_public_other(tr::now);
+			} else if (type == qstr("CHANNELS_ADMIN_LOCATED_TOO_MUCH")) {
+				return tr::lng_channels_too_much_located_other(tr::now);
 			} else if (type == qstr("ADMINS_TOO_MUCH")) {
 				return (channel->isBroadcast()
 					? tr::lng_error_admin_limit_channel

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp

@@ -240,6 +240,7 @@ private:
 	std::optional<Privacy> _privacySavedValue;
 	std::optional<ChannelData*> _linkedChatSavedValue;
 	ChannelData *_linkedChatOriginalValue = nullptr;
+	bool _channelHasLocationOriginalValue = false;
 	std::optional<HistoryVisibility> _historyVisibilitySavedValue;
 	std::optional<QString> _usernameSavedValue;
 	std::optional<bool> _signaturesSavedValue;
@@ -489,7 +490,8 @@ void Controller::refreshHistoryVisibility(anim::type animated) {
 		return;
 	}
 	_controls.historyVisibilityWrap->toggle(
-		(_privacySavedValue != Privacy::Public
+		(_privacySavedValue != Privacy::HasUsername
+			&& !_channelHasLocationOriginalValue
 			&& (!_linkedChatSavedValue || !*_linkedChatSavedValue)),
 		animated);
 };
@@ -506,6 +508,7 @@ void Controller::showEditPeerTypeBox(
 	Ui::show(
 		Box<EditPeerTypeBox>(
 			_peer,
+			_channelHasLocationOriginalValue,
 			boxCallback,
 			_privacySavedValue,
 			_usernameSavedValue,
@@ -569,26 +572,34 @@ void Controller::fillPrivacyTypeButton() {
 	Expects(_controls.buttonsLayout != nullptr);
 
 	// Create Privacy Button.
+	const auto hasLocation = _peer->isChannel()
+		&& _peer->asChannel()->hasLocation();
 	_privacySavedValue = (_peer->isChannel()
-		&& _peer->asChannel()->isPublic())
-		? Privacy::Public
-		: Privacy::Private;
+		&& _peer->asChannel()->hasUsername())
+		? Privacy::HasUsername
+		: Privacy::NoUsername;
 
 	const auto isGroup = (_peer->isChat() || _peer->isMegagroup());
 	AddButtonWithText(
 		_controls.buttonsLayout,
-		(isGroup
+		(hasLocation
+			? tr::lng_manage_peer_link_type
+			: isGroup
 			? tr::lng_manage_peer_group_type
 			: tr::lng_manage_peer_channel_type)(),
 		_privacyTypeUpdates.events(
 		) | rpl::map([=](Privacy flag) {
-			return (Privacy::Public == flag
-				? (isGroup
+			return (flag == Privacy::HasUsername)
+				? (hasLocation
+					? tr::lng_manage_peer_link_permanent
+					: isGroup
 					? tr::lng_manage_public_group_title
-					: tr::lng_manage_public_peer_title)
-				: (isGroup
+					: tr::lng_manage_public_peer_title)()
+				: (hasLocation
+					? tr::lng_manage_peer_link_invite
+					: isGroup
 					? tr::lng_manage_private_group_title
-					: tr::lng_manage_private_peer_title))();
+					: tr::lng_manage_private_peer_title)();
 		}) | rpl::flatten_latest(),
 		[=] { showEditPeerTypeBox(); });
 
@@ -640,9 +651,7 @@ void Controller::fillInviteLinkButton() {
 	Expects(_controls.buttonsLayout != nullptr);
 
 	const auto buttonCallback = [=] {
-		Ui::show(
-			Box<EditPeerTypeBox>(_peer),
-			LayerOption::KeepOther);
+		Ui::show(Box<EditPeerTypeBox>(_peer), LayerOption::KeepOther);
 	};
 
 	AddButtonWithText(
@@ -685,6 +694,7 @@ void Controller::fillHistoryVisibilityButton() {
 	_historyVisibilitySavedValue = (!channel || channel->hiddenPreHistory())
 		? HistoryVisibility::Hidden
 		: HistoryVisibility::Visible;
+	_channelHasLocationOriginalValue = channel && channel->hasLocation();
 
 	const auto updateHistoryVisibility =
 		std::make_shared<rpl::event_stream<HistoryVisibility>>();
@@ -945,7 +955,7 @@ std::optional<Controller::Saving> Controller::validate() const {
 bool Controller::validateUsername(Saving &to) const {
 	if (!_privacySavedValue) {
 		return true;
-	} else if (_privacySavedValue != Privacy::Public) {
+	} else if (_privacySavedValue != Privacy::HasUsername) {
 		to.username = QString();
 		return true;
 	}
@@ -994,7 +1004,8 @@ bool Controller::validateDescription(Saving &to) const {
 bool Controller::validateHistoryVisibility(Saving &to) const {
 	if (!_controls.historyVisibilityWrap
 		|| !_controls.historyVisibilityWrap->toggled()
-		|| (_privacySavedValue == Privacy::Public)) {
+		|| _channelHasLocationOriginalValue
+		|| (_privacySavedValue == Privacy::HasUsername)) {
 		return true;
 	}
 	to.hiddenPreHistory

Telegram/SourceFiles/boxes/peers/edit_peer_type_box.cpp

@@ -51,6 +51,7 @@ public:
 	Controller(
 		not_null<Ui::VerticalLayout*> container,
 		not_null<PeerData*> peer,
+		bool useLocationPhrases,
 		std::optional<Privacy> privacySavedValue,
 		std::optional<QString> usernameSavedValue);
 
@@ -129,10 +130,8 @@ private:
 	void addRoundButton(
 		not_null<Ui::VerticalLayout*> container,
 		Privacy value,
-		const QString &groupText,
-		const QString &channelText,
-		rpl::producer<QString> groupAbout,
-		rpl::producer<QString> channelAbout);
+		const QString &text,
+		rpl::producer<QString> about);
 
 	bool inviteLinkShown();
 	QString inviteLinkText();
@@ -141,6 +140,7 @@ private:
 	std::optional<Privacy> _privacySavedValue;
 	std::optional<QString> _usernameSavedValue;
 
+	bool _useLocationPhrases = false;
 	bool _isGroup = false;
 	bool _isInviteLink = false;
 	bool _isAllowSave = false;
@@ -158,11 +158,13 @@ private:
 Controller::Controller(
 	not_null<Ui::VerticalLayout*> container,
 	not_null<PeerData*> peer,
+	bool useLocationPhrases,
 	std::optional<Privacy> privacySavedValue,
 	std::optional<QString> usernameSavedValue)
 : _peer(peer)
 , _privacySavedValue(privacySavedValue)
 , _usernameSavedValue(usernameSavedValue)
+, _useLocationPhrases(useLocationPhrases)
 , _isGroup(_peer->isChat() || _peer->isMegagroup())
 , _isInviteLink(!_privacySavedValue.has_value()
 	&& !_usernameSavedValue.has_value())
@@ -189,7 +191,7 @@ void Controller::createContent() {
 	_wrap->add(createInviteLinkEdit());
 	_wrap->add(createUsernameEdit());
 
-	if (_controls.privacy->value() == Privacy::Private) {
+	if (_controls.privacy->value() == Privacy::NoUsername) {
 		checkUsernameAvailability();
 	}
 }
@@ -197,21 +199,19 @@ void Controller::createContent() {
 void Controller::addRoundButton(
 		not_null<Ui::VerticalLayout*> container,
 		Privacy value,
-		const QString &groupText,
-		const QString &channelText,
-		rpl::producer<QString> groupAbout,
-		rpl::producer<QString> channelAbout) {
+		const QString &text,
+		rpl::producer<QString> about) {
 	container->add(object_ptr<Ui::Radioenum<Privacy>>(
 		container,
 		_controls.privacy,
 		value,
-		(_isGroup ? groupText : channelText),
+		text,
 		st::editPeerPrivacyBoxCheckbox));
 	container->add(object_ptr<Ui::PaddingWrap<Ui::FlatLabel>>(
 		container,
 		object_ptr<Ui::FlatLabel>(
 			container,
-			std::move(_isGroup ? groupAbout : channelAbout),
+			std::move(about),
 			st::editPeerPrivacyLabel),
 		st::editPeerPrivacyLabelMargins));
 	container->add(object_ptr<Ui::FixedHeightWidget>(
@@ -242,24 +242,35 @@ void Controller::fillPrivaciesButtons(
 	const auto container = result->entity();
 
 	const auto isPublic = _peer->isChannel()
-		&& _peer->asChannel()->isPublic();
+		&& _peer->asChannel()->hasUsername();
 	_controls.privacy = std::make_shared<Ui::RadioenumGroup<Privacy>>(
-		savedValue.value_or(isPublic ? Privacy::Public : Privacy::Private));
+		savedValue.value_or(
+			isPublic ? Privacy::HasUsername : Privacy::NoUsername));
 
 	addRoundButton(
 		container,
-		Privacy::Public,
-		tr::lng_create_public_group_title(tr::now),
-		tr::lng_create_public_channel_title(tr::now),
-		tr::lng_create_public_group_about(),
-		tr::lng_create_public_channel_about());
+		Privacy::HasUsername,
+		(_useLocationPhrases
+			? tr::lng_create_permanent_link_title
+			: _isGroup
+			? tr::lng_create_public_group_title
+			: tr::lng_create_public_channel_title)(tr::now),
+		(_isGroup
+			? tr::lng_create_public_group_about
+			: tr::lng_create_public_channel_about)());
 	addRoundButton(
 		container,
-		Privacy::Private,
-		tr::lng_create_private_group_title(tr::now),
-		tr::lng_create_private_channel_title(tr::now),
-		tr::lng_create_private_group_about(),
-		tr::lng_create_private_channel_about());
+		Privacy::NoUsername,
+		(_useLocationPhrases
+			? tr::lng_create_invite_link_title
+			: _isGroup
+			? tr::lng_create_private_group_title
+			: tr::lng_create_private_channel_title)(tr::now),
+		(_useLocationPhrases
+			? tr::lng_create_invite_link_about
+			: _isGroup
+			? tr::lng_create_private_group_about
+			: tr::lng_create_private_channel_about)());
 
 	_controls.privacy->setChangedCallback([=](Privacy value) {
 		privacyChanged(value);
@@ -343,7 +354,7 @@ object_ptr<Ui::RpWidget> Controller::createUsernameEdit() {
 		&Ui::UsernameInput::changed,
 		[this] { usernameChanged(); });
 
-	const auto shown = (_controls.privacy->value() == Privacy::Public);
+	const auto shown = (_controls.privacy->value() == Privacy::HasUsername);
 	result->toggle(shown, anim::type::instant);
 
 	return std::move(result);
@@ -352,14 +363,14 @@ object_ptr<Ui::RpWidget> Controller::createUsernameEdit() {
 void Controller::privacyChanged(Privacy value) {
 	const auto toggleEditUsername = [&] {
 		_controls.usernameWrap->toggle(
-			(value == Privacy::Public),
+			(value == Privacy::HasUsername),
 			anim::type::instant);
 	};
 	const auto refreshVisibilities = [&] {
 		// Now first we need to hide that was shown.
 		// Otherwise box will change own Y position.
 
-		if (value == Privacy::Public) {
+		if (value == Privacy::HasUsername) {
 			refreshCreateInviteLink();
 			refreshEditInviteLink();
 			toggleEditUsername();
@@ -372,12 +383,12 @@ void Controller::privacyChanged(Privacy value) {
 			refreshEditInviteLink();
 		}
 	};
-	if (value == Privacy::Public) {
+	if (value == Privacy::HasUsername) {
 		if (_usernameState == UsernameState::TooMany) {
 			askUsernameRevoke();
 			return;
 		} else if (_usernameState == UsernameState::NotAvailable) {
-			_controls.privacy->setValue(Privacy::Private);
+			_controls.privacy->setValue(Privacy::NoUsername);
 			return;
 		}
 		refreshVisibilities();
@@ -394,7 +405,7 @@ void Controller::checkUsernameAvailability() {
 	if (!_controls.usernameInput) {
 		return;
 	}
-	const auto initial = (_controls.privacy->value() != Privacy::Public);
+	const auto initial = (_controls.privacy->value() != Privacy::HasUsername);
 	const auto checking = initial
 		? qsl(".bad.")
 		: getUsernameInput();
@@ -425,14 +436,14 @@ void Controller::checkUsernameAvailability() {
 		_usernameState = UsernameState::Normal;
 		if (type == qstr("CHANNEL_PUBLIC_GROUP_NA")) {
 			_usernameState = UsernameState::NotAvailable;
-			_controls.privacy->setValue(Privacy::Private);
+			_controls.privacy->setValue(Privacy::NoUsername);
 		} else if (type == qstr("CHANNELS_ADMIN_PUBLIC_TOO_MUCH")) {
 			_usernameState = UsernameState::TooMany;
-			if (_controls.privacy->value() == Privacy::Public) {
+			if (_controls.privacy->value() == Privacy::HasUsername) {
 				askUsernameRevoke();
 			}
 		} else if (initial) {
-			if (_controls.privacy->value() == Privacy::Public) {
+			if (_controls.privacy->value() == Privacy::HasUsername) {
 				_controls.usernameResult = nullptr;
 				setFocusUsername();
 			}
@@ -446,10 +457,10 @@ void Controller::checkUsernameAvailability() {
 }
 
 void Controller::askUsernameRevoke() {
-	_controls.privacy->setValue(Privacy::Private);
+	_controls.privacy->setValue(Privacy::NoUsername);
 	const auto revokeCallback = crl::guard(this, [this] {
 		_usernameState = UsernameState::Normal;
-		_controls.privacy->setValue(Privacy::Public);
+		_controls.privacy->setValue(Privacy::HasUsername);
 		checkUsernameAvailability();
 	});
 	Ui::show(
@@ -683,20 +694,26 @@ void Controller::refreshCreateInviteLink() {
 
 bool Controller::inviteLinkShown() {
 	return !_controls.privacy
-		|| (_controls.privacy->value() == Privacy::Private)
+		|| (_controls.privacy->value() == Privacy::NoUsername)
 		|| _isInviteLink;
 }
 
 } // namespace
 
+EditPeerTypeBox::EditPeerTypeBox(QWidget*, not_null<PeerData*> peer)
+: EditPeerTypeBox(nullptr, peer, false, {}, {}, {}, {}) {
+}
+
 EditPeerTypeBox::EditPeerTypeBox(
 	QWidget*,
 	not_null<PeerData*> peer,
+	bool useLocationPhrases,
 	std::optional<FnMut<void(Privacy, QString)>> savedCallback,
 	std::optional<Privacy> privacySaved,
 	std::optional<QString> usernameSaved,
 	std::optional<rpl::producer<QString>> usernameError)
 : _peer(peer)
+, _useLocationPhrases(useLocationPhrases)
 , _savedCallback(std::move(savedCallback))
 , _privacySavedValue(privacySaved)
 , _usernameSavedValue(usernameSaved)
@@ -716,6 +733,7 @@ void EditPeerTypeBox::prepare() {
 		this,
 		content,
 		_peer,
+		_useLocationPhrases,
 		_privacySavedValue,
 		_usernameSavedValue);
 	_focusRequests.events(
@@ -735,14 +753,14 @@ void EditPeerTypeBox::prepare() {
 	if (!controller->isInviteLink() && _savedCallback.has_value()) {
 		addButton(tr::lng_settings_save(), [=] {
 			const auto v = controller->getPrivacy();
-			if (!controller->isAllowSave() && (v == Privacy::Public)) {
+			if (!controller->isAllowSave() && (v == Privacy::HasUsername)) {
 				controller->setFocusUsername();
 				return;
 			}
 
 			auto local = std::move(*_savedCallback);
 			local(v,
-				(v == Privacy::Public)
+				(v == Privacy::HasUsername)
 					? controller->getUsernameInput()
 					: QString()); // We dont need username with private type.
 			closeBox();

Telegram/SourceFiles/boxes/peers/edit_peer_type_box.h

@@ -25,8 +25,8 @@ class Button;
 } // namespace Info
 
 enum class Privacy {
-	Public,
-	Private,
+	HasUsername,
+	NoUsername,
 };
 
 enum class UsernameState {
@@ -37,12 +37,16 @@ enum class UsernameState {
 
 class EditPeerTypeBox : public BoxContent {
 public:
+	// Edit just the invite link.
+	EditPeerTypeBox(QWidget*, not_null<PeerData*> peer);
+
 	EditPeerTypeBox(
 		QWidget*,
-		not_null<PeerData*> p,
-		std::optional<FnMut<void(Privacy, QString)>> savedCallback = {},
-		std::optional<Privacy> privacySaved = {},
-		std::optional<QString> usernameSaved = {},
+		not_null<PeerData*> peer,
+		bool useLocationPhrases,
+		std::optional<FnMut<void(Privacy, QString)>> savedCallback,
+		std::optional<Privacy> privacySaved,
+		std::optional<QString> usernameSaved,
 		std::optional<rpl::producer<QString>> usernameError = {});
 
 protected:
@@ -51,6 +55,7 @@ protected:
 
 private:
 	not_null<PeerData*> _peer;
+	bool _useLocationPhrases = false;
 	std::optional<FnMut<void(Privacy, QString)>> _savedCallback;
 
 	std::optional<Privacy> _privacySavedValue;

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 "data/data_location.h"
 #include "history/history.h"
 #include "observer_peer.h"
 #include "auth_session.h"
@@ -32,6 +33,14 @@ void MegagroupInfo::setMigrateFromChat(ChatData *chat) {
 	_migratedFrom = chat;
 }
 
+const ChannelLocation *MegagroupInfo::getLocation() const {
+	return _location.address.isEmpty() ? nullptr : &_location;
+}
+
+void MegagroupInfo::setLocation(const ChannelLocation &location) {
+	_location = location;
+}
+
 ChannelData::ChannelData(not_null<Data::Session*> owner, PeerId id)
 : PeerData(owner, id)
 , inputChannel(MTP_inputChannel(MTP_int(bareId()), MTP_long(0))) {
@@ -92,6 +101,37 @@ bool ChannelData::canHaveInviteLink() const {
 		|| amCreator();
 }
 
+void ChannelData::setLocation(const MTPChannelLocation &data) {
+	if (!mgInfo) {
+		return;
+	}
+	const auto was = mgInfo->getLocation();
+	const auto wasValue = was ? *was : ChannelLocation();
+	data.match([&](const MTPDchannelLocation &data) {
+		data.vgeo_point.match([&](const MTPDgeoPoint &point) {
+			mgInfo->setLocation({
+				qs(data.vaddress),
+				Data::LocationPoint(point)
+			});
+		}, [&](const MTPDgeoPointEmpty &) {
+			mgInfo->setLocation(ChannelLocation());
+		});
+	}, [&](const MTPDchannelLocationEmpty &) {
+		mgInfo->setLocation(ChannelLocation());
+	});
+	const auto now = mgInfo->getLocation();
+	const auto nowValue = now ? *now : ChannelLocation();
+	if (was != now || (was && wasValue != nowValue)) {
+		Notify::peerUpdatedDelayed(
+			this,
+			Notify::PeerUpdate::Flag::ChannelLocation);
+	}
+}
+
+const ChannelLocation *ChannelData::getLocation() const {
+	return mgInfo ? mgInfo->getLocation() : nullptr;
+}
+
 void ChannelData::setLinkedChat(ChannelData *linked) {
 	if (_linkedChat != linked) {
 		_linkedChat = linked;
@@ -600,11 +640,14 @@ void ApplyChannelUpdate(
 		? update.vkicked_count.v
 		: 0);
 	channel->setInviteLink(update.vexported_invite.match([&](
-		const MTPDchatInviteExported & data) {
+			const MTPDchatInviteExported &data) {
 		return qs(data.vlink);
 	}, [&](const MTPDchatInviteEmpty &) {
 		return QString();
 	}));
+	channel->setLocation(update.has_location()
+		? update.vlocation
+		: MTPChannelLocation(MTP_channelLocationEmpty()));
 	channel->setLinkedChat(update.has_linked_chat_id()
 		? channel->owner().channelLoaded(update.vlinked_chat_id.v)
 		: nullptr);

Telegram/SourceFiles/data/data_channel.h

@@ -9,6 +9,25 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "data/data_peer.h"
 #include "data/data_pts_waiter.h"
+#include "data/data_location.h"
+
+struct ChannelLocation {
+	QString address;
+	Data::LocationPoint point;
+
+	friend inline bool operator==(
+			const ChannelLocation &a,
+			const ChannelLocation &b) {
+		return a.address.isEmpty()
+			? b.address.isEmpty()
+			: (a.address == b.address && a.point == b.point);
+	}
+	friend inline bool operator!=(
+			const ChannelLocation &a,
+			const ChannelLocation &b) {
+		return !(a == b);
+	}
+};
 
 class MegagroupInfo {
 public:
@@ -34,6 +53,9 @@ public:
 	ChatData *getMigrateFromChat() const;
 	void setMigrateFromChat(ChatData *chat);
 
+	const ChannelLocation *getLocation() const;
+	void setLocation(const ChannelLocation &location);
+
 	std::deque<not_null<UserData*>> lastParticipants;
 	base::flat_map<not_null<UserData*>, Admin> lastAdmins;
 	base::flat_map<not_null<UserData*>, Restricted> lastRestricted;
@@ -57,6 +79,7 @@ public:
 
 private:
 	ChatData *_migratedFrom = nullptr;
+	ChannelLocation _location;
 
 };
 
@@ -79,7 +102,8 @@ public:
 	static constexpr auto kEssentialFullFlags = 0
 		| MTPDchannelFull::Flag::f_can_view_participants
 		| MTPDchannelFull::Flag::f_can_set_username
-		| MTPDchannelFull::Flag::f_can_set_stickers;
+		| MTPDchannelFull::Flag::f_can_set_stickers
+		| MTPDchannelFull::Flag::f_location;
 	using FullFlags = Data::Flags<
 		MTPDchannelFull::Flags,
 		kEssentialFullFlags>;
@@ -206,9 +230,15 @@ public:
 	bool isBroadcast() const {
 		return flags() & MTPDchannel::Flag::f_broadcast;
 	}
-	bool isPublic() const {
+	bool hasUsername() const {
 		return flags() & MTPDchannel::Flag::f_username;
 	}
+	bool hasLocation() const {
+		return fullFlags() & MTPDchannelFull::Flag::f_location;
+	}
+	bool isPublic() const {
+		return hasUsername() || hasLocation();
+	}
 	bool amCreator() const {
 		return flags() & MTPDchannel::Flag::f_creator;
 	}
@@ -279,6 +309,9 @@ public:
 	QString inviteLink() const;
 	bool canHaveInviteLink() const;
 
+	void setLocation(const MTPChannelLocation &data);
+	const ChannelLocation *getLocation() const;
+
 	void setLinkedChat(ChannelData *linked);
 	ChannelData *linkedChat() const;
 

Telegram/SourceFiles/data/data_location.cpp

@@ -0,0 +1,44 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "data/data_location.h"
+
+#include "ui/image/image.h"
+#include "data/data_file_origin.h"
+
+namespace Data {
+namespace {
+
+GeoPointLocation ComputeLocation(const Data::LocationPoint &point) {
+	const auto scale = 1 + (cScale() * cIntRetinaFactor()) / 200;
+	const auto zoom = 13 + (scale - 1);
+	const auto w = st::locationSize.width() / scale;
+	const auto h = st::locationSize.height() / scale;
+
+	auto result = GeoPointLocation();
+	result.lat = point.lat();
+	result.lon = point.lon();
+	result.access = point.accessHash();
+	result.width = w;
+	result.height = h;
+	result.zoom = zoom;
+	result.scale = scale;
+	return result;
+}
+
+} // namespace
+
+LocationThumbnail::LocationThumbnail(const LocationPoint &point)
+: point(point)
+, thumb(Images::Create(ComputeLocation(point))) {
+}
+
+void LocationThumbnail::load(FileOrigin origin) {
+	thumb->load(origin);
+}
+
+} // namespace Data

Telegram/SourceFiles/data/data_location.h

@@ -0,0 +1,99 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+namespace Data {
+
+struct FileOrigin;
+
+class LocationPoint {
+public:
+	LocationPoint() = default;
+	explicit LocationPoint(const MTPDgeoPoint &point)
+	: _lat(point.vlat.v)
+	, _lon(point.vlong.v)
+	, _access(point.vaccess_hash.v) {
+	}
+
+	QString latAsString() const {
+		return AsString(_lat);
+	}
+	QString lonAsString() const {
+		return AsString(_lon);
+	}
+	MTPGeoPoint toMTP() const {
+		return MTP_geoPoint(
+			MTP_double(_lon),
+			MTP_double(_lat),
+			MTP_long(_access));
+	}
+
+	float64 lat() const {
+		return _lat;
+	}
+	float64 lon() const {
+		return _lon;
+	}
+	uint64 accessHash() const {
+		return _access;
+	}
+
+	inline size_t hash() const {
+#ifndef OS_MAC_OLD
+		return QtPrivate::QHashCombine().operator()(
+				std::hash<float64>()(_lat),
+				_lon);
+#else // OS_MAC_OLD
+		const auto h1 = std::hash<float64>()(_lat);
+		const auto h2 = std::hash<float64>()(_lon);
+		return ((h1 << 16) | (h1 >> 16)) ^ h2;
+#endif // OS_MAC_OLD
+	}
+
+private:
+	static QString AsString(float64 value) {
+		constexpr auto kPrecision = 6;
+		return QString::number(value, 'f', kPrecision);
+	}
+
+	friend inline bool operator==(const LocationPoint &a, const LocationPoint &b) {
+		return (a._lat == b._lat) && (a._lon == b._lon);
+	}
+
+	friend inline bool operator<(const LocationPoint &a, const LocationPoint &b) {
+		return (a._lat < b._lat) || ((a._lat == b._lat) && (a._lon < b._lon));
+	}
+
+	float64 _lat = 0;
+	float64 _lon = 0;
+	uint64 _access = 0;
+
+};
+
+struct LocationThumbnail {
+	LocationThumbnail(const LocationPoint &point);
+
+	LocationPoint point;
+	ImagePtr thumb;
+
+	void load(FileOrigin origin);
+
+};
+
+} // namespace Data
+
+namespace std {
+
+template <>
+struct hash<Data::LocationPoint> {
+	size_t operator()(const Data::LocationPoint &value) const {
+		return value.hash();
+	}
+};
+
+} // namespace std

Telegram/SourceFiles/data/data_media_types.cpp

@@ -168,7 +168,7 @@ const Invoice *Media::invoice() const {
 	return nullptr;
 }
 
-LocationData *Media::location() const {
+LocationThumbnail *Media::location() const {
 	return nullptr;
 }
 
@@ -861,17 +861,17 @@ std::unique_ptr<HistoryMedia> MediaContact::createView(
 
 MediaLocation::MediaLocation(
 	not_null<HistoryItem*> parent,
-	const LocationCoords &coords)
-: MediaLocation(parent, coords, QString(), QString()) {
+	const LocationPoint &point)
+: MediaLocation(parent, point, QString(), QString()) {
 }
 
 MediaLocation::MediaLocation(
 	not_null<HistoryItem*> parent,
-	const LocationCoords &coords,
+	const LocationPoint &point,
 	const QString &title,
 	const QString &description)
 : Media(parent)
-, _location(parent->history()->owner().location(coords))
+, _location(parent->history()->owner().location(point))
 , _title(title)
 , _description(description) {
 }
@@ -879,12 +879,12 @@ MediaLocation::MediaLocation(
 std::unique_ptr<Media> MediaLocation::clone(not_null<HistoryItem*> parent) {
 	return std::make_unique<MediaLocation>(
 		parent,
-		_location->coords,
+		_location->point,
 		_title,
 		_description);
 }
 
-LocationData *MediaLocation::location() const {
+LocationThumbnail *MediaLocation::location() const {
 	return _location;
 }
 
@@ -915,7 +915,7 @@ TextForMimeData MediaLocation::clipboardText() const {
 	if (!descriptionResult.text.isEmpty()) {
 		result.append(std::move(descriptionResult));
 	}
-	result.append(LocationClickHandler(_location->coords).dragText());
+	result.append(LocationClickHandler(_location->point).dragText());
 	return result;
 }
 

Telegram/SourceFiles/data/data_media_types.h

@@ -9,8 +9,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 class HistoryItem;
 class HistoryMedia;
-class LocationCoords;
-struct LocationData;
 
 namespace base {
 template <typename Enum>
@@ -29,6 +27,9 @@ class Element;
 
 namespace Data {
 
+class LocationPoint;
+struct LocationThumbnail;
+
 enum class CallFinishReason : char {
 	Missed,
 	Busy,
@@ -76,7 +77,7 @@ public:
 	virtual const Call *call() const;
 	virtual GameData *game() const;
 	virtual const Invoice *invoice() const;
-	virtual LocationData *location() const;
+	virtual LocationThumbnail *location() const;
 	virtual PollData *poll() const;
 
 	virtual bool uploading() const;
@@ -226,16 +227,16 @@ class MediaLocation : public Media {
 public:
 	MediaLocation(
 		not_null<HistoryItem*> parent,
-		const LocationCoords &coords);
+		const LocationPoint &point);
 	MediaLocation(
 		not_null<HistoryItem*> parent,
-		const LocationCoords &coords,
+		const LocationPoint &point,
 		const QString &title,
 		const QString &description);
 
 	std::unique_ptr<Media> clone(not_null<HistoryItem*> parent) override;
 
-	LocationData *location() const override;
+	LocationThumbnail *location() const override;
 	QString chatListText() const override;
 	QString notificationText() const override;
 	QString pinnedTextSubstring() const override;
@@ -248,7 +249,7 @@ public:
 		not_null<HistoryItem*> realParent) override;
 
 private:
-	not_null<LocationData*> _location;
+	not_null<LocationThumbnail*> _location;
 	QString _title;
 	QString _description;
 

Telegram/SourceFiles/data/data_session.cpp

@@ -2885,14 +2885,13 @@ void Session::applyUpdate(const MTPDupdateChatDefaultBannedRights &update) {
 	}
 }
 
-not_null<LocationData*> Session::location(const LocationCoords &coords) {
-	auto i = _locations.find(coords);
-	if (i == _locations.cend()) {
-		i = _locations.emplace(
-			coords,
-			std::make_unique<LocationData>(coords)).first;
-	}
-	return i->second.get();
+not_null<LocationThumbnail*> Session::location(const LocationPoint &point) {
+	const auto i = _locations.find(point);
+	return (i != _locations.cend())
+		? i->second.get()
+		: _locations.emplace(
+			point,
+			std::make_unique<LocationThumbnail>(point)).first->second.get();
 }
 
 void Session::registerPhotoItem(

Telegram/SourceFiles/data/data_session.h

@@ -58,7 +58,7 @@ struct SavedCredentials;
 namespace Data {
 
 class Folder;
-
+class LocationPoint;
 class WallPaper;
 
 class Session final {
@@ -521,8 +521,8 @@ public:
 	not_null<PollData*> processPoll(const MTPPoll &data);
 	not_null<PollData*> processPoll(const MTPDmessageMediaPoll &data);
 
-	[[nodiscard]] not_null<LocationData*> location(
-		const LocationCoords &coords);
+	[[nodiscard]] not_null<LocationThumbnail*> location(
+		const LocationPoint &point);
 
 	void registerPhotoItem(
 		not_null<const PhotoData*> photo,
@@ -895,8 +895,8 @@ private:
 		not_null<const WebPageData*>,
 		base::flat_set<not_null<ViewElement*>>> _webpageViews;
 	std::unordered_map<
-		LocationCoords,
-		std::unique_ptr<LocationData>> _locations;
+		LocationPoint,
+		std::unique_ptr<LocationThumbnail>> _locations;
 	std::unordered_map<
 		PollId,
 		std::unique_ptr<PollData>> _polls;

Telegram/SourceFiles/history/admin_log/history_admin_log_item.cpp

@@ -667,7 +667,7 @@ void GenerateItems(
 			const auto address = qs(data.vaddress);
 			const auto link = data.vgeo_point.match([&](const MTPDgeoPoint &data) {
 				return textcmdLink(
-					LocationClickHandler::Url(LocationCoords(data)),
+					LocationClickHandler::Url(Data::LocationPoint(data)),
 					address);
 			}, [&](const MTPDgeoPointEmpty &) {
 				return address;

Telegram/SourceFiles/history/history_location_manager.cpp

@@ -18,23 +18,6 @@ namespace {
 constexpr auto kCoordPrecision = 8;
 constexpr auto kMaxHttpRedirects = 5;
 
-GeoPointLocation ComputeLocation(const LocationCoords &coords) {
-	const auto scale = 1 + (cScale() * cIntRetinaFactor()) / 200;
-	const auto zoom = 13 + (scale - 1);
-	const auto w = st::locationSize.width() / scale;
-	const auto h = st::locationSize.height() / scale;
-
-	auto result = GeoPointLocation();
-	result.lat = coords.lat();
-	result.lon = coords.lon();
-	result.access = coords.accessHash();
-	result.width = w;
-	result.height = h;
-	result.zoom = zoom;
-	result.scale = scale;
-	return result;
-}
-
 } // namespace
 
 QString LocationClickHandler::copyToClipboardText() const {
@@ -46,25 +29,16 @@ QString LocationClickHandler::copyToClipboardContextItemText() const {
 }
 
 void LocationClickHandler::onClick(ClickContext context) const {
-	if (!psLaunchMaps(_coords)) {
+	if (!psLaunchMaps(_point)) {
 		QDesktopServices::openUrl(_text);
 	}
 }
 
 void LocationClickHandler::setup() {
-	_text = Url(_coords);
+	_text = Url(_point);
 }
 
-QString LocationClickHandler::Url(const LocationCoords &coords) {
-	const auto latlon = coords.latAsString() + ',' + coords.lonAsString();
+QString LocationClickHandler::Url(const Data::LocationPoint &point) {
+	const auto latlon = point.latAsString() + ',' + point.lonAsString();
 	return qsl("https://maps.google.com/maps?q=") + latlon + qsl("&ll=") + latlon + qsl("&z=16");
 }
-
-LocationData::LocationData(const LocationCoords &coords)
-: coords(coords)
-, thumb(Images::Create(ComputeLocation(coords))) {
-}
-
-void LocationData::load(Data::FileOrigin origin) {
-	thumb->load(origin);
-}

Telegram/SourceFiles/history/history_location_manager.h

@@ -7,98 +7,16 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-class LocationCoords {
-public:
-	LocationCoords() = default;
-	explicit LocationCoords(const MTPDgeoPoint &point)
-	: _lat(point.vlat.v)
-	, _lon(point.vlong.v)
-	, _access(point.vaccess_hash.v) {
-	}
-
-	QString latAsString() const {
-		return asString(_lat);
-	}
-	QString lonAsString() const {
-		return asString(_lon);
-	}
-	MTPGeoPoint toMTP() const {
-		return MTP_geoPoint(
-			MTP_double(_lon),
-			MTP_double(_lat),
-			MTP_long(_access));
-	}
-
-	float64 lat() const {
-		return _lat;
-	}
-	float64 lon() const {
-		return _lon;
-	}
-	uint64 accessHash() const {
-		return _access;
-	}
-
-	inline size_t hash() const {
-#ifndef OS_MAC_OLD
-		return QtPrivate::QHashCombine().operator()(
-				std::hash<float64>()(_lat),
-				_lon);
-#else // OS_MAC_OLD
-		const auto h1 = std::hash<float64>()(_lat);
-		const auto h2 = std::hash<float64>()(_lon);
-		return ((h1 << 16) | (h1 >> 16)) ^ h2;
-#endif // OS_MAC_OLD
-	}
-
-private:
-	static QString asString(float64 value) {
-		constexpr auto kPrecision = 6;
-		return QString::number(value, 'f', kPrecision);
-	}
-
-	friend inline bool operator==(const LocationCoords &a, const LocationCoords &b) {
-		return (a._lat == b._lat) && (a._lon == b._lon);
-	}
-
-	friend inline bool operator<(const LocationCoords &a, const LocationCoords &b) {
-		return (a._lat < b._lat) || ((a._lat == b._lat) && (a._lon < b._lon));
-	}
-
-	float64 _lat = 0;
-	float64 _lon = 0;
-	uint64 _access = 0;
-
-};
-
-namespace std {
-
-template <>
-struct hash<LocationCoords> {
-	size_t operator()(const LocationCoords &value) const {
-		return value.hash();
-	}
-};
-
-} // namespace std
-
-struct LocationData {
-	LocationData(const LocationCoords &coords);
-
-	LocationCoords coords;
-	ImagePtr thumb;
-
-	void load(Data::FileOrigin origin);
-
-};
+#include "data/data_location.h"
 
 class LocationClickHandler : public ClickHandler {
 public:
-	LocationClickHandler(const LocationCoords &coords) : _coords(coords) {
+	LocationClickHandler(const Data::LocationPoint &point)
+	: _point(point) {
 		setup();
 	}
 
-	static QString Url(const LocationCoords &coords);
+	static QString Url(const Data::LocationPoint &coords);
 
 	void onClick(ClickContext context) const override;
 
@@ -116,7 +34,7 @@ public:
 private:
 
 	void setup();
-	LocationCoords _coords;
+	Data::LocationPoint _point;
 	QString _text;
 
 };

Telegram/SourceFiles/history/history_message.cpp

@@ -789,7 +789,7 @@ std::unique_ptr<Data::Media> HistoryMessage::CreateMedia(
 		return media.vgeo.match([&](const MTPDgeoPoint &point) -> Result {
 			return std::make_unique<Data::MediaLocation>(
 				item,
-				LocationCoords(point));
+				Data::LocationPoint(point));
 		}, [](const MTPDgeoPointEmpty &) -> Result {
 			return nullptr;
 		});
@@ -797,7 +797,7 @@ std::unique_ptr<Data::Media> HistoryMessage::CreateMedia(
 		return media.vgeo.match([&](const MTPDgeoPoint &point) -> Result {
 			return std::make_unique<Data::MediaLocation>(
 				item,
-				LocationCoords(point));
+				Data::LocationPoint(point));
 		}, [](const MTPDgeoPointEmpty &) -> Result {
 			return nullptr;
 		});
@@ -805,7 +805,7 @@ std::unique_ptr<Data::Media> HistoryMessage::CreateMedia(
 		return media.vgeo.match([&](const MTPDgeoPoint &point) -> Result {
 			return std::make_unique<Data::MediaLocation>(
 				item,
-				LocationCoords(point),
+				Data::LocationPoint(point),
 				qs(media.vtitle),
 				qs(media.vaddress));
 		}, [](const MTPDgeoPointEmpty &data) -> Result {

Telegram/SourceFiles/history/media/history_media_location.cpp

@@ -16,6 +16,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/image/image.h"
 #include "ui/text_options.h"
 #include "data/data_file_origin.h"
+#include "data/data_location.h"
 #include "styles/style_history.h"
 
 namespace {
@@ -26,14 +27,14 @@ using TextState = HistoryView::TextState;
 
 HistoryLocation::HistoryLocation(
 	not_null<Element*> parent,
-	not_null<LocationData*> location,
+	not_null<Data::LocationThumbnail*> location,
 	const QString &title,
 	const QString &description)
 : HistoryMedia(parent)
 , _data(location)
 , _title(st::msgMinWidth)
 , _description(st::msgMinWidth)
-, _link(std::make_shared<LocationClickHandler>(_data->coords)) {
+, _link(std::make_shared<LocationClickHandler>(_data->point)) {
 	if (!title.isEmpty()) {
 		_title.setText(
 			st::webPageTitleStyle,

Telegram/SourceFiles/history/media/history_media_location.h

@@ -9,14 +9,15 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "history/media/history_media.h"
 
-class LocationCoords;
-struct LocationData;
+namespace Data {
+struct LocationThumbnail;
+} // namespace Data
 
 class HistoryLocation : public HistoryMedia {
 public:
 	HistoryLocation(
 		not_null<Element*> parent,
-		not_null<LocationData*> location,
+		not_null<Data::LocationThumbnail*> location,
 		const QString &title = QString(),
 		const QString &description = QString());
 
@@ -58,7 +59,7 @@ private:
 	TextSelection toDescriptionSelection(TextSelection selection) const;
 	TextSelection fromDescriptionSelection(TextSelection selection) const;
 
-	LocationData *_data;
+	const not_null<Data::LocationThumbnail*> _data;
 	Ui::Text::String _title, _description;
 	ClickHandlerPtr _link;
 

Telegram/SourceFiles/history/view/history_view_context_menu.cpp

@@ -521,7 +521,7 @@ void CopyPostLink(FullMsgId itemId) {
 	const auto channel = item->history()->peer->asChannel();
 	Assert(channel != nullptr);
 
-	Ui::Toast::Show(channel->isPublic()
+	Ui::Toast::Show(channel->hasUsername()
 		? tr::lng_channel_public_link_copied(tr::now)
 		: tr::lng_context_about_private_link(tr::now));
 }

Telegram/SourceFiles/info/profile/info_profile_actions.cpp

@@ -19,6 +19,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/labels.h"
 #include "ui/toast/toast.h"
 #include "ui/text/text_utilities.h" // Ui::Text::ToUpper
+#include "history/history_location_manager.h" // LocationClickHandler.
 #include "boxes/abstract_box.h"
 #include "boxes/confirm_box.h"
 #include "boxes/peer_list_box.h"
@@ -249,11 +250,11 @@ object_ptr<Ui::RpWidget> DetailsFiller::setupInfo() {
 		result->setContextCopyText(contextCopyText);
 		return result;
 	};
-	if (auto user = _peer->asUser()) {
-		if (Auth().supportMode()) {
+	if (const auto user = _peer->asUser()) {
+		if (user->session().supportMode()) {
 			addInfoLineGeneric(
-				Auth().supportHelper().infoLabelValue(user),
-				Auth().supportHelper().infoTextValue(user));
+				user->session().supportHelper().infoLabelValue(user),
+				user->session().supportHelper().infoTextValue(user));
 		}
 
 		addInfoOneLine(
@@ -273,26 +274,20 @@ object_ptr<Ui::RpWidget> DetailsFiller::setupInfo() {
 		auto linkText = LinkValue(
 			_peer
 		) | rpl::map([](const QString &link) {
-			auto result = TextWithEntities{ link, {} };
-			if (!link.isEmpty()) {
-				auto remove = qstr("https://");
-				if (result.text.startsWith(remove)) {
-					result.text.remove(0, remove.size());
-				}
-				result.entities.push_back({
-					EntityType::CustomUrl,
-					0,
-					result.text.size(),
-					link });
-			}
-			return result;
+			return link.isEmpty()
+				? TextWithEntities()
+				: Ui::Text::Link(
+					(link.startsWith(qstr("https://"))
+						? link.mid(qstr("https://").size())
+						: link),
+					link);
 		});
 		auto link = addInfoOneLine(
 			tr::lng_info_link_label(),
 			std::move(linkText),
 			QString());
 		link->setClickHandlerFilter([peer = _peer](auto&&...) {
-			auto link = Core::App().createInternalLinkFull(
+			const auto link = Core::App().createInternalLinkFull(
 				peer->userName());
 			if (!link.isEmpty()) {
 				QApplication::clipboard()->setText(link);
@@ -300,6 +295,24 @@ object_ptr<Ui::RpWidget> DetailsFiller::setupInfo() {
 			}
 			return false;
 		});
+
+		if (const auto channel = _peer->asChannel()) {
+			auto locationText = LocationValue(
+				channel
+			) | rpl::map([](const ChannelLocation *location) {
+				return location
+					? Ui::Text::Link(
+						location->address,
+						LocationClickHandler::Url(location->point))
+					: TextWithEntities();
+			});
+			addInfoOneLine(
+				tr::lng_info_location_label(),
+				std::move(locationText),
+				QString()
+			)->setLinksTrusted();
+		}
+
 		addInfoLine(tr::lng_info_about_label(), AboutValue(_peer));
 	}
 	if (!_peer->isSelf()) {

Telegram/SourceFiles/info/profile/info_profile_values.cpp

@@ -58,8 +58,8 @@ rpl::producer<TextWithEntities> BioValue(not_null<UserData*> user) {
 
 auto PlainUsernameValue(not_null<PeerData*> peer) {
 	return Notify::PeerUpdateValue(
-			peer,
-			Notify::PeerUpdate::Flag::UsernameChanged
+		peer,
+		Notify::PeerUpdate::Flag::UsernameChanged
 	) | rpl::map([peer] {
 		return peer->userName();
 	});
@@ -113,6 +113,16 @@ rpl::producer<QString> LinkValue(not_null<PeerData*> peer) {
 	});
 }
 
+rpl::producer<const ChannelLocation*> LocationValue(
+		not_null<ChannelData*> channel) {
+	return Notify::PeerUpdateValue(
+		channel,
+		Notify::PeerUpdate::Flag::ChannelLocation
+	) | rpl::map([=] {
+		return channel->getLocation();
+	});
+}
+
 rpl::producer<bool> NotificationsEnabledValue(not_null<PeerData*> peer) {
 	return rpl::merge(
 		Notify::PeerUpdateValue(

Telegram/SourceFiles/info/profile/info_profile_values.h

@@ -11,6 +11,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <rpl/map.h>
 #include "observer_peer.h"
 
+struct ChannelLocation;
+
 namespace Ui {
 class RpWidget;
 template <typename Widget>
@@ -36,6 +38,8 @@ rpl::producer<TextWithEntities> BioValue(not_null<UserData*> user);
 rpl::producer<TextWithEntities> UsernameValue(not_null<UserData*> user);
 rpl::producer<TextWithEntities> AboutValue(not_null<PeerData*> peer);
 rpl::producer<QString> LinkValue(not_null<PeerData*> peer);
+rpl::producer<const ChannelLocation*> LocationValue(
+	not_null<ChannelData*> channel);
 rpl::producer<bool> NotificationsEnabledValue(not_null<PeerData*> peer);
 rpl::producer<bool> IsContactValue(not_null<UserData*> user);
 rpl::producer<bool> CanInviteBotToGroupValue(not_null<UserData*> user);

Telegram/SourceFiles/inline_bots/inline_bot_layout_internal.cpp

@@ -1025,9 +1025,10 @@ Article::Article(not_null<Context*> context, Result *result, bool withThumb) : I
 , _withThumb(withThumb)
 , _title(st::emojiPanWidth - st::emojiScroll.width - st::inlineResultsLeft - st::inlineThumbSize - st::inlineThumbSkip)
 , _description(st::emojiPanWidth - st::emojiScroll.width - st::inlineResultsLeft - st::inlineThumbSize - st::inlineThumbSkip) {
-	LocationCoords location;
-	if (!_link && result->getLocationCoords(&location)) {
-		_link = std::make_shared<LocationClickHandler>(location);
+	if (!_link) {
+		if (const auto point = result->getLocationPoint()) {
+			_link = std::make_shared<LocationClickHandler>(*point);
+		}
 	}
 	_thumbLetter = getResultThumbLetter();
 }

Telegram/SourceFiles/inline_bots/inline_bot_result.cpp

@@ -223,17 +223,16 @@ std::unique_ptr<Result> Result::create(uint64 queryId, const MTPBotInlineResult
 		return nullptr;
 	}
 
-	LocationCoords coords;
-	if (result->getLocationCoords(&coords)) {
+	if (const auto point = result->getLocationPoint()) {
 		const auto scale = 1 + (cScale() * cIntRetinaFactor()) / 200;
 		const auto zoom = 15 + (scale - 1);
 		const auto w = st::inlineThumbSize / scale;
 		const auto h = st::inlineThumbSize / scale;
 
 		auto location = GeoPointLocation();
-		location.lat = coords.lat();
-		location.lon = coords.lon();
-		location.access = coords.accessHash();
+		location.lat = point->lat();
+		location.lon = point->lon();
+		location.access = point->accessHash();
 		location.width = w;
 		location.height = h;
 		location.zoom = zoom;
@@ -329,8 +328,8 @@ QString Result::getErrorOnSend(History *history) const {
 	return sendData->getErrorOnSend(this, history);
 }
 
-bool Result::getLocationCoords(LocationCoords *outLocation) const {
-	return sendData->getLocationCoords(outLocation);
+std::optional<Data::LocationPoint> Result::getLocationPoint() const {
+	return sendData->getLocationPoint();
 }
 
 QString Result::getLayoutTitle() const {

Telegram/SourceFiles/inline_bots/inline_bot_result.h

@@ -8,7 +8,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once
 
 class FileLoader;
-class LocationCoords;
+
+namespace Data {
+class LocationPoint;
+} // namespace Data
 
 namespace InlineBots {
 
@@ -55,7 +58,7 @@ public:
 	QString getErrorOnSend(History *history) const;
 
 	// interface for Layout:: usage
-	bool getLocationCoords(LocationCoords *outLocation) const;
+	std::optional<Data::LocationPoint> getLocationPoint() const;
 	QString getLayoutTitle() const;
 	QString getLayoutDescription() const;
 

Telegram/SourceFiles/inline_bots/inline_bot_send_data.h

@@ -45,8 +45,8 @@ public:
 	virtual bool hasLocationCoords() const {
 		return false;
 	}
-	virtual bool getLocationCoords(LocationCoords *outLocation) const {
-		return false;
+	virtual std::optional<Data::LocationPoint> getLocationPoint() const {
+		return std::nullopt;
 	}
 	virtual QString getLayoutTitle(const Result *owner) const;
 	virtual QString getLayoutDescription(const Result *owner) const;
@@ -121,14 +121,12 @@ public:
 	bool hasLocationCoords() const override {
 		return true;
 	}
-	bool getLocationCoords(LocationCoords *outLocation) const override {
-		Assert(outLocation != nullptr);
-		*outLocation = _location;
-		return true;
+	std::optional<Data::LocationPoint> getLocationPoint() const override {
+		return _location;
 	}
 
 private:
-	LocationCoords _location;
+	Data::LocationPoint _location;
 
 };
 
@@ -153,14 +151,12 @@ public:
 	bool hasLocationCoords() const override {
 		return true;
 	}
-	bool getLocationCoords(LocationCoords *outLocation) const override {
-		Assert(outLocation != nullptr);
-		*outLocation = _location;
-		return true;
+	std::optional<Data::LocationPoint> getLocationPoint() const override {
+		return _location;
 	}
 
 private:
-	LocationCoords _location;
+	Data::LocationPoint _location;
 	QString _venueId, _provider, _title, _address;
 
 };

Telegram/SourceFiles/observer_peer.h

@@ -66,6 +66,7 @@ struct PeerUpdate {
 		ChannelStickersChanged    = (1 << 18),
 		ChannelPromotedChanged    = (1 << 19),
 		ChannelLinkedChat         = (1 << 20),
+		ChannelLocation           = (1 << 21),
 	};
 	using Flags = base::flags<Flag>;
 	friend inline constexpr auto is_flag_type(Flag) { return true; }

Telegram/SourceFiles/platform/linux/specific_linux.cpp

@@ -478,6 +478,6 @@ bool linuxMoveFile(const char *from, const char *to) {
 	return true;
 }
 
-bool psLaunchMaps(const LocationCoords &coords) {
+bool psLaunchMaps(const Data::LocationPoint &point) {
 	return false;
 }

Telegram/SourceFiles/platform/linux/specific_linux.h

@@ -10,7 +10,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <execinfo.h>
 #include <signal.h>
 
-class LocationCoords;
+namespace Data {
+class LocationPoint;
+} // namespace Data
 
 namespace Platform {
 
@@ -104,4 +106,4 @@ public:
 
 bool linuxMoveFile(const char *from, const char *to);
 
-bool psLaunchMaps(const LocationCoords &coords);
+bool psLaunchMaps(const Data::LocationPoint &point);

Telegram/SourceFiles/platform/mac/specific_mac.h

@@ -9,7 +9,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "platform/mac/specific_mac_p.h"
 
-class LocationCoords;
+namespace Data {
+class LocationPoint;
+} // namespace Data
 
 namespace Platform {
 
@@ -108,4 +110,4 @@ QString strStyleOfInterface();
 QString strTitleWrapClass();
 QString strTitleClass();
 
-bool psLaunchMaps(const LocationCoords &coords);
+bool psLaunchMaps(const Data::LocationPoint &point);

Telegram/SourceFiles/platform/mac/specific_mac.mm

@@ -288,8 +288,8 @@ QByteArray psPathBookmark(const QString &path) {
 	return objc_pathBookmark(path);
 }
 
-bool psLaunchMaps(const LocationCoords &coords) {
-	return QDesktopServices::openUrl(qsl("https://maps.apple.com/?q=Point&z=16&ll=%1,%2").arg(coords.latAsString()).arg(coords.lonAsString()));
+bool psLaunchMaps(const Data::LocationPoint &point) {
+	return QDesktopServices::openUrl(qsl("https://maps.apple.com/?q=Point&z=16&ll=%1,%2").arg(point.latAsString()).arg(point.lonAsString()));
 }
 
 QString strNotificationAboutThemeChange() {

Telegram/SourceFiles/platform/win/specific_win.cpp

@@ -583,6 +583,6 @@ void psWriteDump() {
 #endif // TDESKTOP_DISABLE_CRASH_REPORTS
 }
 
-bool psLaunchMaps(const LocationCoords &coords) {
-	return QDesktopServices::openUrl(qsl("bingmaps:?lvl=16&collection=point.%1_%2_Point").arg(coords.latAsString()).arg(coords.lonAsString()));
+bool psLaunchMaps(const Data::LocationPoint &point) {
+	return QDesktopServices::openUrl(qsl("bingmaps:?lvl=16&collection=point.%1_%2_Point").arg(point.latAsString()).arg(point.lonAsString()));
 }

Telegram/SourceFiles/platform/win/specific_win.h

@@ -9,7 +9,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "platform/win/wrapper_windows_h.h"
 
-class LocationCoords;
+namespace Data {
+class LocationPoint;
+} // namespace Data
 
 namespace Platform {
 
@@ -107,4 +109,4 @@ public:
 
 };
 
-bool psLaunchMaps(const LocationCoords &coords);
+bool psLaunchMaps(const Data::LocationPoint &point);

Telegram/SourceFiles/window/window_peer_menu.cpp

@@ -506,7 +506,7 @@ void Filler::addChannelActions(not_null<ChannelData*> channel) {
 			[channel] { Auth().api().joinChannel(channel); });
 	}
 	if (_source != PeerMenuSource::ChatsList) {
-		auto needReport = !channel->amCreator()
+		const auto needReport = !channel->amCreator()
 			&& (!isGroup || channel->isPublic());
 		if (needReport) {
 			_addAction(tr::lng_profile_report(tr::now), [channel] {

Telegram/gyp/telegram_sources.txt

@@ -190,6 +190,8 @@
 <(src_loc)/data/data_game.h
 <(src_loc)/data/data_groups.cpp
 <(src_loc)/data/data_groups.h
+<(src_loc)/data/data_location.cpp
+<(src_loc)/data/data_location.h
 <(src_loc)/data/data_media_types.cpp
 <(src_loc)/data/data_media_types.h
 <(src_loc)/data/data_messages.cpp