Allow saving "Autotranslation of Messages" in channels.

Telegram/Resources/langs/lang.strings

@@ -3155,6 +3155,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_boost_group_ask" = "Ask your **Premium** members to boost your group with this link:";
 //"lng_boost_group_gifting" = "Boost your group by gifting your members Telegram Premium. {link}";
 
+"lng_boost_channel_title_autotranslate" = "Autotranslation of Messages";
+"lng_boost_channel_needs_level_autotranslate#one" = "Your channel needs to reach **Level {count}** to enable autotranslation of messages.";
+"lng_boost_channel_needs_level_autotranslate#other" = "Your channel needs to reach **Level {count}** to enable autotranslation of messages.";
+
 "lng_feature_stories#one" = "**{count}** Story Per Day";
 "lng_feature_stories#other" = "**{count}** Stories Per Day";
 "lng_feature_reactions#one" = "**{count}** Custom Reaction";
@@ -3173,6 +3177,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_feature_custom_background_group" = "Custom Group Background";
 "lng_feature_custom_emoji_pack" = "Custom Emoji Pack";
 "lng_feature_transcribe" = "Voice-to-Text Conversion";
+"lng_feature_autotranslate" = "Autotranslation of Messages";
 
 "lng_giveaway_new_title" = "Boosts via Gifts";
 "lng_giveaway_new_about" = "Get more boosts for your channel by gifting Premium to your subscribers.";
@@ -4392,6 +4397,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_edit_contact_title" = "Edit contact";
 "lng_edit_channel_title" = "Edit channel";
 "lng_edit_bot_title" = "Edit bot";
+"lng_edit_autotranslate" = "Auto-translate messages";
 "lng_edit_sign_messages" = "Sign messages";
 "lng_edit_sign_messages_about" = "Add names of admins to the messages they post.";
 "lng_edit_sign_profiles" = "Show authors' profiles";
@@ -5372,6 +5378,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_admin_log_participant_volume_channel" = "{from} changed live stream volume for {user} to {percent}";
 "lng_admin_log_antispam_enabled" = "{from} enabled aggressive anti-spam";
 "lng_admin_log_antispam_disabled" = "{from} disabled aggressive anti-spam";
+"lng_admin_log_autotranslate_enabled" = "{from} enabled automatic translation";
+"lng_admin_log_autotranslate_disabled" = "{from} disabled automatic translation";
 "lng_admin_log_change_color" = "{from} changed channel color from {previous} to {color}";
 "lng_admin_log_set_background_emoji" = "{from} set channel background emoji to {emoji}";
 "lng_admin_log_change_background_emoji" = "{from} changed channel background emoji from {previous} to {emoji}";

Telegram/SourceFiles/boxes/peers/edit_peer_color_box.cpp

@@ -1482,7 +1482,11 @@ void CheckBoostLevel(
 		show->show(Box(Ui::AskBoostBox, Ui::AskBoostBoxData{
 			.link = qs(data.vboost_url()),
 			.boost = counters,
+			.features = (peer->isChannel()
+				? LookupBoostFeatures(peer->asChannel())
+				: Ui::BoostFeatures()),
 			.reason = *reason,
+			.group = !peer->isBroadcast(),
 		}, openStatistics, nullptr));
 		cancel();
 	}).fail([=](const MTP::Error &error) {

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp

@@ -358,6 +358,7 @@ private:
 		std::optional<QString> description;
 		std::optional<bool> hiddenPreHistory;
 		std::optional<bool> forum;
+		std::optional<bool> autotranslate;
 		std::optional<bool> signatures;
 		std::optional<bool> signatureProfiles;
 		std::optional<bool> noForwards;
@@ -385,6 +386,7 @@ private:
 	//void fillInviteLinkButton();
 	void fillForumButton();
 	void fillColorIndexButton();
+	void fillAutoTranslateButton();
 	void fillSignaturesButton();
 	void fillHistoryVisibilityButton();
 	void fillManageSection();
@@ -413,6 +415,7 @@ private:
 	[[nodiscard]] bool validateDescription(Saving &to) const;
 	[[nodiscard]] bool validateHistoryVisibility(Saving &to) const;
 	[[nodiscard]] bool validateForum(Saving &to) const;
+	[[nodiscard]] bool validateAutotranslate(Saving &to) const;
 	[[nodiscard]] bool validateSignatures(Saving &to) const;
 	[[nodiscard]] bool validateForwards(Saving &to) const;
 	[[nodiscard]] bool validateJoinToWrite(Saving &to) const;
@@ -426,6 +429,7 @@ private:
 	void saveDescription();
 	void saveHistoryVisibility();
 	void saveForum();
+	void saveAutotranslate();
 	void saveSignatures();
 	void saveForwards();
 	void saveJoinToWrite();
@@ -452,6 +456,7 @@ private:
 	std::optional<HistoryVisibility> _historyVisibilitySavedValue;
 	std::optional<EditPeerTypeData> _typeDataSavedValue;
 	std::optional<bool> _forumSavedValue;
+	std::optional<bool> _autotranslateSavedValue;
 	std::optional<bool> _signaturesSavedValue;
 	std::optional<bool> _signatureProfilesSavedValue;
 
@@ -1093,6 +1098,61 @@ void Controller::fillColorIndexButton() {
 		st::managePeerColorsButton);
 }
 
+void Controller::fillAutoTranslateButton() {
+	Expects(_controls.buttonsLayout != nullptr);
+
+	const auto channel = _peer->asBroadcast();
+	if (!channel) {
+		return;
+	}
+
+	const auto requiredLevel = Data::LevelLimits(&channel->session())
+		.channelAutoTranslateLevelMin();
+	const auto autotranslate = _controls.buttonsLayout->add(
+		EditPeerInfoBox::CreateButton(
+			_controls.buttonsLayout,
+			tr::lng_edit_autotranslate(),
+			rpl::single(QString()),
+			[] {},
+			st::manageGroupTopicsButton,
+			{ &st::menuIconTranslate }));
+	const auto toggled = autotranslate->lifetime().make_state<
+		rpl::event_stream<bool>
+	>();
+	autotranslate->toggleOn(rpl::single(
+		channel->autoTranslation()
+	) | rpl::then(toggled->events()));
+	const auto isLocked = channel->levelHint() < requiredLevel;
+	const auto reason = Ui::AskBoostReason{
+		.data = Ui::AskBoostAutotranslate{ .requiredLevel = requiredLevel },
+	};
+
+	autotranslate->setToggleLocked(isLocked);
+
+	autotranslate->toggledChanges(
+	) | rpl::start_with_next([=](bool value) {
+		if (!isLocked) {
+			_autotranslateSavedValue = toggled;
+		} else if (value) {
+			toggled->fire(false);
+			CheckBoostLevel(
+				_navigation->uiShow(),
+				_peer,
+				[=](int level) {
+					return (level < requiredLevel)
+						? std::make_optional(reason)
+						: std::nullopt;
+				},
+				[] {});
+		}
+	}, autotranslate->lifetime());
+
+	autotranslate->toggledValue(
+	) | rpl::start_with_next([=](bool toggled) {
+		_autotranslateSavedValue = toggled;
+	}, _controls.buttonsLayout->lifetime());
+}
+
 void Controller::fillSignaturesButton() {
 	Expects(_controls.buttonsLayout != nullptr);
 
@@ -1255,6 +1315,8 @@ void Controller::fillManageSection() {
 	const auto canEditSignatures = isChannel
 		&& channel->canEditSignatures()
 		&& !channel->isMegagroup();
+	const auto canEditAutoTranslate = isChannel
+		&& channel->canEditAutoTranslate();
 	const auto canEditPreHistoryHidden = isChannel
 		? channel->canEditPreHistoryHidden()
 		: chat->canEditPreHistoryHidden();
@@ -1308,6 +1370,9 @@ void Controller::fillManageSection() {
 	if (canEditColorIndex) {
 		fillColorIndexButton();
 	}
+	if (canEditAutoTranslate) {
+		fillAutoTranslateButton();
+	}
 	if (canEditSignatures) {
 		fillSignaturesButton();
 	} else if (canEditPreHistoryHidden
@@ -1543,7 +1608,11 @@ void Controller::editReactions() {
 				strong->show(Box(Ui::AskBoostBox, Ui::AskBoostBoxData{
 					.link = link,
 					.boost = counters,
+					.features = (_peer->isChannel()
+						? LookupBoostFeatures(_peer->asChannel())
+						: Ui::BoostFeatures()),
 					.reason = { Ui::AskBoostCustomReactions{ required } },
+					.group = !_peer->isBroadcast(),
 				}, openStatistics, nullptr));
 			}
 		};
@@ -1897,6 +1966,7 @@ std::optional<Controller::Saving> Controller::validate() const {
 		&& validateDescription(result)
 		&& validateHistoryVisibility(result)
 		&& validateForum(result)
+		&& validateAutotranslate(result)
 		&& validateSignatures(result)
 		&& validateForwards(result)
 		&& validateJoinToWrite(result)
@@ -1984,6 +2054,14 @@ bool Controller::validateForum(Saving &to) const {
 	return true;
 }
 
+bool Controller::validateAutotranslate(Saving &to) const {
+	if (!_autotranslateSavedValue.has_value()) {
+		return true;
+	}
+	to.autotranslate = _autotranslateSavedValue;
+	return true;
+}
+
 bool Controller::validateSignatures(Saving &to) const {
 	Expects(_signaturesSavedValue.has_value()
 		== _signatureProfilesSavedValue.has_value());
@@ -2035,6 +2113,7 @@ void Controller::save() {
 		pushSaveStage([=] { saveDescription(); });
 		pushSaveStage([=] { saveHistoryVisibility(); });
 		pushSaveStage([=] { saveForum(); });
+		pushSaveStage([=] { saveAutotranslate(); });
 		pushSaveStage([=] { saveSignatures(); });
 		pushSaveStage([=] { saveForwards(); });
 		pushSaveStage([=] { saveJoinToWrite(); });
@@ -2181,7 +2260,8 @@ void Controller::saveLinkedChat() {
 	)).done([=] {
 		channel->setLinkedChat(*_savingData.linkedChat);
 		continueSave();
-	}).fail([=] {
+	}).fail([=](const MTP::Error &error) {
+		_navigation->showToast(error.type());
 		cancelSave();
 	}).send();
 }
@@ -2421,6 +2501,30 @@ void Controller::saveForum() {
 		if (error.type() == u"CHAT_NOT_MODIFIED"_q) {
 			continueSave();
 		} else {
+			_navigation->showToast(error.type());
+			cancelSave();
+		}
+	}).send();
+}
+
+void Controller::saveAutotranslate() {
+	const auto channel = _peer->asBroadcast();
+	if (!_savingData.autotranslate
+		|| !channel
+		|| (*_savingData.autotranslate == channel->autoTranslation())) {
+		return continueSave();
+	}
+	_api.request(MTPchannels_ToggleAutotranslation(
+		channel->inputChannel,
+		MTP_bool(*_savingData.autotranslate)
+	)).done([=](const MTPUpdates &result) {
+		channel->session().api().applyUpdates(result);
+		continueSave();
+	}).fail([=](const MTP::Error &error) {
+		if (error.type() == u"CHAT_NOT_MODIFIED"_q) {
+			continueSave();
+		} else {
+			_navigation->showToast(error.type());
 			cancelSave();
 		}
 	}).send();
@@ -2455,6 +2559,7 @@ void Controller::saveSignatures() {
 		if (error.type() == u"CHAT_NOT_MODIFIED"_q) {
 			continueSave();
 		} else {
+			_navigation->showToast(error.type());
 			cancelSave();
 		}
 	}).send();
@@ -2475,6 +2580,7 @@ void Controller::saveForwards() {
 		if (error.type() == u"CHAT_NOT_MODIFIED"_q) {
 			continueSave();
 		} else {
+			_navigation->showToast(error.type());
 			cancelSave();
 		}
 	}).send();
@@ -2497,6 +2603,7 @@ void Controller::saveJoinToWrite() {
 		if (error.type() == u"CHAT_NOT_MODIFIED"_q) {
 			continueSave();
 		} else {
+			_navigation->showToast(error.type());
 			cancelSave();
 		}
 	}).send();
@@ -2519,6 +2626,7 @@ void Controller::saveRequestToJoin() {
 		if (error.type() == u"CHAT_NOT_MODIFIED"_q) {
 			continueSave();
 		} else {
+			_navigation->showToast(error.type());
 			cancelSave();
 		}
 	}).send();

Telegram/SourceFiles/boxes/peers/replace_boost_box.cpp

@@ -449,6 +449,7 @@ Ui::BoostFeatures LookupBoostFeatures(not_null<ChannelData*> channel) {
 		.nameColorsByLevel = std::move(nameColorsByLevel),
 		.linkStylesByLevel = std::move(linkStylesByLevel),
 		.linkLogoLevel = group ? 0 : levelLimits.channelBgIconLevelMin(),
+		.autotranslateLevel = group ? 0 : levelLimits.channelAutoTranslateLevelMin(),
 		.transcribeLevel = group ? levelLimits.groupTranscribeLevelMin() : 0,
 		.emojiPackLevel = group ? levelLimits.groupEmojiStickersLevelMin() : 0,
 		.emojiStatusLevel = group

Telegram/SourceFiles/data/data_channel.cpp

@@ -649,7 +649,11 @@ bool ChannelData::canEditPermissions() const {
 }
 
 bool ChannelData::canEditSignatures() const {
-	return isChannel() && canEditInformation();
+	return isBroadcast() && canEditInformation();
+}
+
+bool ChannelData::canEditAutoTranslate() const {
+	return isBroadcast() && canEditInformation();
 }
 
 bool ChannelData::canEditPreHistoryHidden() const {

Telegram/SourceFiles/data/data_channel.h

@@ -73,6 +73,7 @@ enum class ChannelDataFlag : uint64 {
 	SignatureProfiles = (1ULL << 35),
 	StargiftsAvailable = (1ULL << 36),
 	PaidMessagesAvailable = (1ULL << 37),
+	AutoTranslation = (1ULL << 38),
 };
 inline constexpr bool is_flag_type(ChannelDataFlag) { return true; };
 using ChannelDataFlags = base::flags<ChannelDataFlag>;
@@ -321,6 +322,9 @@ public:
 	[[nodiscard]] bool antiSpamMode() const {
 		return flags() & Flag::AntiSpam;
 	}
+	[[nodiscard]] bool autoTranslation() const {
+		return flags() & Flag::AutoTranslation;
+	}
 
 	[[nodiscard]] auto adminRights() const {
 		return _adminRights.current();
@@ -382,6 +386,7 @@ public:
 	[[nodiscard]] bool canViewAdmins() const;
 	[[nodiscard]] bool canViewBanned() const;
 	[[nodiscard]] bool canEditSignatures() const;
+	[[nodiscard]] bool canEditAutoTranslate() const;
 	[[nodiscard]] bool canEditStickers() const;
 	[[nodiscard]] bool canEditEmoji() const;
 	[[nodiscard]] bool canDelete() const;

Telegram/SourceFiles/data/data_premium_limits.cpp

@@ -262,6 +262,12 @@ int LevelLimits::channelRestrictSponsoredLevelMin() const {
 		20);
 }
 
+int LevelLimits::channelAutoTranslateLevelMin() const {
+	return _session->appConfig().get<int>(
+		u"channel_autotranslation_level_min"_q,
+		3);
+}
+
 int LevelLimits::groupTranscribeLevelMin() const {
 	return _session->appConfig().get<int>(
 		u"group_transcribe_level_min"_q,

Telegram/SourceFiles/data/data_premium_limits.h

@@ -102,6 +102,7 @@ public:
 	[[nodiscard]] int channelWallpaperLevelMin() const;
 	[[nodiscard]] int channelCustomWallpaperLevelMin() const;
 	[[nodiscard]] int channelRestrictSponsoredLevelMin() const;
+	[[nodiscard]] int channelAutoTranslateLevelMin() const;
 	[[nodiscard]] int groupTranscribeLevelMin() const;
 	[[nodiscard]] int groupEmojiStickersLevelMin() const;
 	[[nodiscard]] int groupProfileBgIconLevelMin() const;

Telegram/SourceFiles/data/data_session.cpp

@@ -967,7 +967,8 @@ not_null<PeerData*> Session::processChat(const MTPChat &data) {
 			| Flag::Forum
 			| ((!minimal && !data.is_stories_hidden_min())
 				? Flag::StoriesHidden
-				: Flag());
+				: Flag())
+			| Flag::AutoTranslation;
 		const auto storiesState = minimal
 			? std::optional<Data::Stories::PeerSourceState>()
 			: data.is_stories_unavailable()
@@ -1006,7 +1007,8 @@ not_null<PeerData*> Session::processChat(const MTPChat &data) {
 				&& !data.is_stories_hidden_min()
 				&& data.is_stories_hidden())
 				? Flag::StoriesHidden
-				: Flag());
+				: Flag())
+			| (data.is_autotranslation() ? Flag::AutoTranslation : Flag());
 		channel->setFlags((channel->flags() & ~flagsMask) | flagsSet);
 		channel->setBotVerifyDetailsIcon(
 			data.vbot_verification_icon().value_or_empty());

Telegram/SourceFiles/settings/settings.style

@@ -31,7 +31,7 @@ settingsButtonLight: SettingsButton(settingsButton) {
 }
 settingsButtonLightNoIcon: SettingsButton(settingsButtonLight, settingsButtonNoIcon) {
 }
-settingsButtonNoIconLocked : SettingsButton(settingsButtonNoIcon) {
+settingsButtonNoIconLocked: SettingsButton(settingsButtonNoIcon) {
 	toggle: Toggle(infoProfileToggle) {
 		lockIcon: icon {{ "info/info_rights_lock", menuIconFg }};
 	}

Telegram/SourceFiles/ui/boxes/boost_box.cpp

@@ -143,6 +143,7 @@ void AddFeaturesList(
 	const auto proj = &Ui::Text::RichLangValue;
 	const auto lowMax = std::max({
 		features.linkLogoLevel,
+		features.autotranslateLevel,
 		features.transcribeLevel,
 		features.emojiPackLevel,
 		features.emojiStatusLevel,
@@ -208,6 +209,11 @@ void AddFeaturesList(
 				st::boostFeatureCustomEmoji);
 		}
 		if (!group) {
+			if (i >= features.autotranslateLevel) {
+				add(
+					tr::lng_feature_autotranslate(proj),
+					st::boostFeatureAutoTranslate);
+			}
 			if (const auto j = features.linkStylesByLevel.find(i)
 				; j != end(features.linkStylesByLevel)) {
 				linkStyles += j->second;
@@ -665,6 +671,8 @@ void AskBoostBox(
 		Fn<void()> startGiveaway) {
 	box->setWidth(st::boxWideWidth);
 	box->setStyle(st::boostBox);
+	box->setNoContentMargin(true);
+	box->addSkip(st::boxRowPadding.left());
 
 	FillBoostLimit(
 		BoxShowFinishes(box),
@@ -676,6 +684,8 @@ void AskBoostBox(
 
 	auto title = v::match(data.reason.data, [](AskBoostChannelColor) {
 		return tr::lng_boost_channel_title_color();
+	}, [](AskBoostAutotranslate) {
+		return tr::lng_boost_channel_title_autotranslate();
 	}, [](AskBoostWallpaper) {
 		return tr::lng_boost_channel_title_wallpaper();
 	}, [](AskBoostEmojiStatus) {
@@ -696,6 +706,11 @@ void AskBoostBox(
 			lt_count,
 			rpl::single(float64(data.requiredLevel)),
 			Ui::Text::RichLangValue);
+	}, [&](AskBoostAutotranslate data) {
+		return tr::lng_boost_channel_needs_level_autotranslate(
+			lt_count,
+			rpl::single(float64(data.requiredLevel)),
+			Ui::Text::RichLangValue);
 	}, [&](AskBoostWallpaper data) {
 		isGroup = data.group;
 		return (data.group
@@ -766,6 +781,12 @@ void AskBoostBox(
 		box->uiShow(),
 		std::move(stats)));
 
+	AddFeaturesList(
+		box->verticalLayout(),
+		data.features,
+		data.boost.level + (data.boost.nextLevelBoosts ? 1 : 0),
+		data.group);
+
 	auto submit = tr::lng_boost_channel_ask_button();
 	const auto button = box->addButton(rpl::duplicate(submit), [=] {
 		QGuiApplication::clipboard()->setText(data.link);

Telegram/SourceFiles/ui/boxes/boost_box.h

@@ -35,6 +35,7 @@ struct BoostFeatures {
 	base::flat_map<int, int> nameColorsByLevel;
 	base::flat_map<int, int> linkStylesByLevel;
 	int linkLogoLevel = 0;
+	int autotranslateLevel = 0;
 	int transcribeLevel = 0;
 	int emojiPackLevel = 0;
 	int emojiStatusLevel = 0;
@@ -74,6 +75,10 @@ struct AskBoostChannelColor {
 	int requiredLevel = 0;
 };
 
+struct AskBoostAutotranslate {
+	int requiredLevel = 0;
+};
+
 struct AskBoostWallpaper {
 	int requiredLevel = 0;
 	bool group = false;
@@ -103,6 +108,7 @@ struct AskBoostWearCollectible {
 struct AskBoostReason {
 	std::variant<
 		AskBoostChannelColor,
+		AskBoostAutotranslate,
 		AskBoostWallpaper,
 		AskBoostEmojiStatus,
 		AskBoostEmojiPack,
@@ -114,7 +120,9 @@ struct AskBoostReason {
 struct AskBoostBoxData {
 	QString link;
 	BoostCounters boost;
+	BoostFeatures features;
 	AskBoostReason reason;
+	bool group = false;
 };
 
 void AskBoostBox(

Telegram/SourceFiles/ui/effects/premium.style

@@ -371,6 +371,7 @@ boostFeatureLink: icon{{ "settings/premium/features/feature_links", windowBgActi
 boostFeatureName: icon{{ "settings/premium/features/feature_color_names", windowBgActive }};
 boostFeatureStories: icon{{ "settings/premium/features/feature_stories", windowBgActive }};
 boostFeatureTranscribe: icon{{ "settings/premium/features/feature_voice", windowBgActive }};
+boostFeatureAutoTranslate: icon{{ "menu/translate", windowBgActive }};
 boostFeatureOffSponsored: icon{{ "settings/premium/features/feature_off_sponsored", windowBgActive }};
 
 paidReactBox: Box(boostBox) {