Implement personal channel selector.

Telegram/Resources/langs/lang.strings

@@ -672,7 +672,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_settings_birthday_contacts" = "Only your contacts can see your birthday. {link}";
 "lng_settings_birthday_contacts_link" = "Change >";
 "lng_settings_birthday_saved" = "Your date of birth was updated.";
-"lng_settings_birthday_reset" = "Reset";
+"lng_settings_birthday_reset" = "Remove";
+"lng_settings_channel_label" = "Personal channel";
+"lng_settings_channel_add" = "Add";
+"lng_settings_channel_remove" = "Remove";
+"lng_settings_channel_no_yet" = "You don't have any channels yet.";
+"lng_settings_channel_start" = "Start a Channel";
+"lng_settings_channel_saved" = "Your personal channel was updated.";
+"lng_settings_channel_removed" = "Your personal channel was removed.";
 "lng_settings_add_account_about" = "You can add up to four accounts with different phone numbers.";
 "lng_settings_peer_to_peer_about" = "Disabling peer-to-peer will relay all calls through Telegram servers to avoid revealing your IP address, but may slightly decrease audio quality.";
 "lng_settings_advanced" = "Advanced";

Telegram/SourceFiles/core/local_url_handlers.cpp

@@ -69,6 +69,102 @@ namespace {
 
 using Match = qthelp::RegularExpressionMatch;
 
+class PersonalChannelController final : public PeerListController {
+public:
+	explicit PersonalChannelController(not_null<Main::Session*> session);
+	~PersonalChannelController();
+
+	Main::Session &session() const override;
+	void prepare() override;
+	void rowClicked(not_null<PeerListRow*> row) override;
+	[[nodiscard]] rpl::producer<not_null<ChannelData*>> chosen() const;
+
+private:
+	const not_null<Main::Session*> _session;
+	rpl::event_stream<not_null<ChannelData*>> _chosen;
+	mtpRequestId _requestId = 0;
+
+};
+
+PersonalChannelController::PersonalChannelController(
+	not_null<Main::Session*> session)
+: _session(session) {
+}
+
+PersonalChannelController::~PersonalChannelController() {
+	if (_requestId) {
+		_session->api().request(_requestId).cancel();
+	}
+}
+
+Main::Session &PersonalChannelController::session() const {
+	return *_session;
+}
+
+void PersonalChannelController::prepare() {
+	using Flag = MTPchannels_GetAdminedPublicChannels::Flag;
+	_requestId = _session->api().request(
+		MTPchannels_GetAdminedPublicChannels(
+			MTP_flags(Flag::f_for_personal))
+	).done([=](const MTPmessages_Chats &result) {
+		_requestId = 0;
+
+		const auto &chats = result.match([](const auto &data) {
+			return data.vchats().v;
+		});
+		for (const auto &chat : chats) {
+			if (const auto peer = _session->data().processChat(chat)) {
+				if (!delegate()->peerListFindRow(peer->id.value)) {
+					delegate()->peerListAppendRow(
+						std::make_unique<PeerListRow>(peer));
+				}
+			}
+		}
+		delegate()->peerListRefreshRows();
+	}).send();
+}
+
+void PersonalChannelController::rowClicked(not_null<PeerListRow*> row) {
+	if (const auto channel = row->peer()->asChannel()) {
+		_chosen.fire_copy(channel);
+	}
+}
+
+auto PersonalChannelController::chosen() const
+-> rpl::producer<not_null<ChannelData*>> {
+	return _chosen.events();
+}
+
+void SavePersonalChannel(
+		not_null<Window::SessionController*> window,
+		ChannelData *channel) {
+	const auto self = window->session().user();
+	const auto history = channel
+		? channel->owner().history(channel->id).get()
+		: nullptr;
+	const auto item = history
+		? history->lastServerMessage()
+		: nullptr;
+	const auto channelId = channel
+		? peerToChannel(channel->id)
+		: ChannelId();
+	const auto messageId = item ? item->id : MsgId();
+	if (self->personalChannelId() != channelId
+		|| (messageId
+			&& self->personalChannelMessageId() != messageId)) {
+		self->setPersonalChannel(channelId, messageId);
+		self->session().api().request(MTPaccount_UpdatePersonalChannel(
+			channel ? channel->inputChannel : MTP_inputChannelEmpty()
+		)).done(crl::guard(window, [=] {
+			window->showToast((channel
+				? tr::lng_settings_channel_saved
+				: tr::lng_settings_channel_removed)(tr::now));
+		})).fail(crl::guard(window, [=](const MTP::Error &error) {
+			window->showToast(u"Error: "_q + error.type());
+		})).send();
+	}
+}
+
 bool JoinGroupByHash(
 		Window::SessionController *controller,
 		const Match &match,
@@ -730,6 +826,45 @@ bool ShowEditBirthdayPrivacy(
 	return true;
 }
 
+bool ShowEditPersonalChannel(
+		Window::SessionController *controller,
+		const Match &match,
+		const QVariant &context) {
+	if (!controller) {
+		return false;
+	}
+
+	auto listController = std::make_unique<PersonalChannelController>(
+		&controller->session());
+	const auto rawController = listController.get();
+	auto initBox = [=](not_null<PeerListBox*> box) {
+		box->setTitle(tr::lng_settings_channel_label());
+		box->addButton(tr::lng_box_done(), [=] {
+			box->closeBox();
+		});
+
+		const auto save = [=](ChannelData *channel) {
+			SavePersonalChannel(controller, channel);
+			box->closeBox();
+		};
+
+		rawController->chosen(
+		) | rpl::start_with_next([=](not_null<ChannelData*> channel) {
+			save(channel);
+		}, box->lifetime());
+
+		if (controller->session().user()->personalChannelId()) {
+			box->addLeftButton(tr::lng_settings_channel_remove(), [=] {
+				save(nullptr);
+			});
+		}
+	};
+	controller->show(Box<PeerListBox>(
+		std::move(listController),
+		std::move(initBox)));
+	return true;
+}
+
 void ExportTestChatTheme(
 		not_null<Window::SessionController*> controller,
 		not_null<const Data::CloudTheme*> theme) {
@@ -1128,6 +1263,10 @@ const std::vector<LocalUrlHandler> &InternalUrlHandlers() {
 			u"^edit_privacy_birthday$"_q,
 			ShowEditBirthdayPrivacy,
 		},
+		{
+			u"^edit_personal_channel$"_q,
+			ShowEditPersonalChannel,
+		},
 	};
 	return Result;
 }

Telegram/SourceFiles/data/data_changes.h

@@ -90,27 +90,28 @@ struct PeerUpdate {
 		EmojiStatus         = (1ULL << 28),
 		BusinessDetails     = (1ULL << 29),
 		Birthday            = (1ULL << 30),
+		PersonalChannel     = (1ULL << 31),
 
 		// For chats and channels
-		InviteLinks         = (1ULL << 31),
+		InviteLinks         = (1ULL << 32),
-		Members             = (1ULL << 32),
+		Members             = (1ULL << 33),
-		Admins              = (1ULL << 33),
+		Admins              = (1ULL << 34),
-		BannedUsers         = (1ULL << 34),
+		BannedUsers         = (1ULL << 35),
-		Rights              = (1ULL << 35),
+		Rights              = (1ULL << 36),
-		PendingRequests     = (1ULL << 36),
+		PendingRequests     = (1ULL << 37),
-		Reactions           = (1ULL << 37),
+		Reactions           = (1ULL << 38),
 
 		// For channels
-		ChannelAmIn         = (1ULL << 38),
+		ChannelAmIn         = (1ULL << 39),
-		StickersSet         = (1ULL << 39),
+		StickersSet         = (1ULL << 40),
-		EmojiSet            = (1ULL << 40),
+		EmojiSet            = (1ULL << 41),
-		ChannelLinkedChat   = (1ULL << 41),
+		ChannelLinkedChat   = (1ULL << 42),
-		ChannelLocation     = (1ULL << 42),
+		ChannelLocation     = (1ULL << 43),
-		Slowmode            = (1ULL << 43),
+		Slowmode            = (1ULL << 44),
-		GroupCall           = (1ULL << 44),
+		GroupCall           = (1ULL << 45),
 
 		// For iteration
-		LastUsedBit         = (1ULL << 44),
+		LastUsedBit         = (1ULL << 45),
 	};
 	using Flags = base::flags<Flag>;
 	friend inline constexpr auto is_flag_type(Flag) { return true; }

Telegram/SourceFiles/data/data_user.cpp

@@ -195,6 +195,23 @@ void UserData::setBusinessDetails(Data::BusinessDetails details) {
 	session().changes().peerUpdated(this, UpdateFlag::BusinessDetails);
 }
 
+ChannelId UserData::personalChannelId() const {
+	return _personalChannelId;
+}
+
+MsgId UserData::personalChannelMessageId() const {
+	return _personalChannelMessageId;
+}
+
+void UserData::setPersonalChannel(ChannelId channelId, MsgId messageId) {
+	if (_personalChannelId != channelId
+		|| _personalChannelMessageId != messageId) {
+		_personalChannelId = channelId;
+		_personalChannelMessageId = messageId;
+		session().changes().peerUpdated(this, UpdateFlag::PersonalChannel);
+	}
+}
+
 void UserData::setName(const QString &newFirstName, const QString &newLastName, const QString &newPhoneName, const QString &newUsername) {
 	bool changeName = !newFirstName.isEmpty() || !newLastName.isEmpty();
 
@@ -623,6 +640,9 @@ void ApplyUserUpdate(not_null<UserData*> user, const MTPDuserFull &update) {
 		update.vbusiness_location(),
 		update.vbusiness_intro()));
 	user->setBirthday(update.vbirthday());
+	user->setPersonalChannel(
+		update.vpersonal_channel_id().value_or_empty(),
+		update.vpersonal_channel_message().value_or_empty());
 	if (user->isSelf()) {
 		user->owner().businessInfo().applyAwaySettings(
 			FromMTP(&user->owner(), update.vbusiness_away_message()));

Telegram/SourceFiles/data/data_user.h

@@ -205,6 +205,10 @@ public:
 	[[nodiscard]] const Data::BusinessDetails &businessDetails() const;
 	void setBusinessDetails(Data::BusinessDetails details);
 
+	[[nodiscard]] ChannelId personalChannelId() const;
+	[[nodiscard]] MsgId personalChannelMessageId() const;
+	void setPersonalChannel(ChannelId channelId, MsgId messageId);
+
 private:
 	auto unavailableReasons() const
 		-> const std::vector<Data::UnavailableReason> & override;
@@ -223,6 +227,9 @@ private:
 	QString _phone;
 	QString _privateForwardName;
 
+	ChannelId _personalChannelId = 0;
+	MsgId _personalChannelMessageId = 0;
+
 	uint64 _accessHash = 0;
 	static constexpr auto kInaccessibleAccessHashOld
 		= 0xFFFFFFFFFFFFFFFFULL;

Telegram/SourceFiles/info/profile/info_profile_values.cpp

@@ -352,6 +352,16 @@ rpl::producer<Data::Birthday> BirthdayValue(not_null<UserData*> user) {
 	});
 }
 
+rpl::producer<ChannelData*> PersonalChannelValue(not_null<UserData*> user) {
+	return user->session().changes().peerFlagsValue(
+		user,
+		UpdateFlag::PersonalChannel
+	) | rpl::map([=] {
+		const auto channelId = user->personalChannelId();
+		return channelId ? user->owner().channel(channelId).get() : nullptr;
+	});
+}
+
 rpl::producer<bool> AmInChannelValue(not_null<ChannelData*> channel) {
 	return channel->session().changes().peerFlagsValue(
 		channel,

Telegram/SourceFiles/info/profile/info_profile_values.h

@@ -86,6 +86,8 @@ rpl::producer<not_null<PeerData*>> MigratedOrMeValue(
 	not_null<UserData*> user);
 [[nodiscard]] rpl::producer<Data::Birthday> BirthdayValue(
 	not_null<UserData*> user);
+[[nodiscard]] rpl::producer<ChannelData*> PersonalChannelValue(
+	not_null<UserData*> user);
 [[nodiscard]] rpl::producer<bool> AmInChannelValue(
 	not_null<ChannelData*> channel);
 [[nodiscard]] rpl::producer<int> MembersCountValue(not_null<PeerData*> peer);

Telegram/SourceFiles/settings/settings_information.cpp

@@ -35,6 +35,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_user.h"
 #include "data/data_peer_values.h"
 #include "data/data_changes.h"
+#include "data/data_channel.h"
 #include "data/data_premium_limits.h"
 #include "info/profile/info_profile_values.h"
 #include "info/profile/info_profile_badge.h"
@@ -368,16 +369,7 @@ void SetupBirthday(
 		tr::lng_settings_birthday_add()
 	) | rpl::map([](Data::Birthday birthday, const QString &add) {
 		const auto text = Data::BirthdayText(birthday);
-		if (!text.isEmpty()) {
+		return TextWithEntities{ !text.isEmpty() ? text : add };
-			return TextWithEntities{ text };
-		}
-		auto result = TextWithEntities{ add };
-		result.entities.push_back({
-			EntityType::CustomUrl,
-			0,
-			int(add.size()),
-			"internal:edit_username" });
-		return result;
 	});
 	const auto edit = [=] {
 		Core::App().openInternalUrl(
@@ -419,6 +411,39 @@ void SetupBirthday(
 			Ui::Text::WithEntities)));
 }
 
+void SetupPersonalChannel(
+		not_null<Ui::VerticalLayout*> container,
+		not_null<Window::SessionController*> controller,
+		not_null<UserData*> self) {
+	const auto session = &self->session();
+
+	Ui::AddSkip(container);
+
+	auto value = rpl::combine(
+		Info::Profile::PersonalChannelValue(self),
+		tr::lng_settings_channel_add()
+	) | rpl::map([](ChannelData *channel, const QString &add) {
+		return TextWithEntities{ channel ? channel->name() : add };
+	});
+	const auto edit = [=] {
+		Core::App().openInternalUrl(
+			u"internal:edit_personal_channel"_q,
+			QVariant::fromValue(ClickHandlerContext{
+				.sessionWindow = base::make_weak(controller),
+			}));
+	};
+	AddRow(
+		container,
+		tr::lng_settings_channel_label(),
+		std::move(value),
+		tr::lng_mediaview_copy(tr::now),
+		edit,
+		{ &st::menuIconChannel });
+
+	Ui::AddSkip(container);
+	Ui::AddDivider(container);
+}
+
 void SetupRows(
 		not_null<Ui::VerticalLayout*> container,
 		not_null<Window::SessionController*> controller,
@@ -1020,6 +1045,7 @@ void Information::setupContent(
 	SetupPhoto(content, controller, self);
 	SetupBio(content, self);
 	SetupRows(content, controller, self);
+	SetupPersonalChannel(content, controller, self);
 	SetupBirthday(content, controller, self);
 	SetupAccountsWrap(content, controller);