Allow enabling direct messages in channels.

Telegram/SourceFiles/boxes/edit_privacy_box.cpp

@@ -1168,12 +1168,13 @@ rpl::producer<int> SetupChargeSlider(
 	struct State {
 		rpl::variable<int> stars;
 	};
-	const auto group = !peer->isUser();
+	const auto broadcast = peer->isBroadcast();
+	const auto group = !broadcast && !peer->isUser();
 	const auto state = container->lifetime().make_state<State>();
 	const auto chargeStars = savedValue ? savedValue : kDefaultChargeStars;
 	state->stars = chargeStars;
 
-	Ui::AddSubsectionTitle(container, group
+	Ui::AddSubsectionTitle(container, (group || broadcast)
 		? tr::lng_rights_charge_price()
 		: tr::lng_messages_privacy_price());
 
@@ -1225,7 +1226,9 @@ rpl::producer<int> SetupChargeSlider(
 	const auto percent = peer->session().appConfig().paidMessageCommission();
 	Ui::AddDividerText(
 		container,
-		(group
+		(broadcast
+			? tr::lng_manage_monoforum_price_about
+			: group
 			? tr::lng_rights_charge_price_about
 			: tr::lng_messages_privacy_price_about)(
 			lt_percent,
@@ -1235,3 +1238,54 @@ rpl::producer<int> SetupChargeSlider(
 
 	return state->stars.value();
 }
+
+void EditDirectMessagesPriceBox(
+		not_null<Ui::GenericBox*> box,
+		not_null<ChannelData*> channel,
+		std::optional<int> savedValue,
+		Fn<void(std::optional<int>)> callback) {
+	box->setTitle(tr::lng_manage_monoforum());
+
+	const auto toggle = box->addRow(object_ptr<Ui::SettingsButton>(
+		box,
+		tr::lng_manage_monoforum_allow(),
+		st::settingsButtonNoIcon
+	), {})->toggleOn(rpl::single(savedValue.has_value()));
+	Ui::AddSkip(box->verticalLayout());
+
+	Ui::AddDividerText(
+		box->verticalLayout(),
+		tr::lng_manage_monoforum_about());
+
+	const auto wrap = box->addRow(
+		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
+			box,
+			object_ptr<Ui::VerticalLayout>(box)),
+		{});
+	wrap->toggle(savedValue.has_value(), anim::type::instant);
+	wrap->toggleOn(toggle->toggledChanges());
+
+	const auto result = box->lifetime().make_state<int>(
+		savedValue.value_or(0));
+
+	const auto inner = wrap->entity();
+	Ui::AddSkip(inner);
+	SetupChargeSlider(
+		inner,
+		channel,
+		savedValue.value_or(0)
+	) | rpl::start_with_next([=](int stars) {
+		*result = stars;
+	}, box->lifetime());
+
+	box->addButton(tr::lng_settings_save(), [=] {
+		const auto weak = Ui::MakeWeak(box);
+		callback(toggle->toggled() ? *result : std::optional<int>());
+		if (const auto strong = weak.data()) {
+			strong->closeBox();
+		}
+	});
+	box->addButton(tr::lng_cancel(), [=] {
+		box->closeBox();
+	});
+}

Telegram/SourceFiles/boxes/edit_privacy_box.h

@@ -174,3 +174,9 @@ void EditMessagesPrivacyBox(
 	not_null<Ui::VerticalLayout*> container,
 	not_null<PeerData*> peer,
 	int savedValue);
+
+void EditDirectMessagesPriceBox(
+	not_null<Ui::GenericBox*> box,
+	not_null<ChannelData*> channel,
+	std::optional<int> savedValue,
+	Fn<void(std::optional<int>)> callback);

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp

@@ -28,6 +28,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/peers/replace_boost_box.h"
 #include "boxes/peers/verify_peers_box.h"
 #include "boxes/peer_list_controllers.h"
+#include "boxes/edit_privacy_box.h" // EditDirectMessagesPriceBox
 #include "boxes/stickers_box.h"
 #include "boxes/username_box.h"
 #include "chat_helpers/emoji_suggestions_widget.h"
@@ -220,28 +221,41 @@ void SaveSlowmodeSeconds(
 }
 
 void SaveStarsPerMessage(
+		std::shared_ptr<Ui::Show> show,
 		not_null<ChannelData*> channel,
 		int starsPerMessage,
-		Fn<void()> done) {
+		Fn<void(bool)> done) {
 	const auto api = &channel->session().api();
 	const auto key = Api::RequestKey("stars_per_message", channel->id);
 
+	const auto broadcast = channel->isBroadcast();
+
+	using Flag = MTPchannels_UpdatePaidMessagesPrice::Flag;
+	const auto broadcastAllowed = broadcast && (starsPerMessage >= 0);
 	const auto requestId = api->request(MTPchannels_UpdatePaidMessagesPrice(
-		MTP_flags(0), // #TODO Support broadcast_messages_allowed flag in UI
+		MTP_flags(broadcastAllowed
+			? Flag::f_broadcast_messages_allowed
+			: Flag(0)),
 		channel->inputChannel,
 		MTP_long(starsPerMessage)
 	)).done([=](const MTPUpdates &result) {
 		api->clearModifyRequest(key);
 		api->applyUpdates(result);
-		channel->setStarsPerMessage(starsPerMessage);
-		done();
+		if (!broadcast) {
+			channel->setStarsPerMessage(starsPerMessage);
+		}
+		done(true);
 	}).fail([=](const MTP::Error &error) {
 		api->clearModifyRequest(key);
 		if (error.type() != u"CHAT_NOT_MODIFIED"_q) {
-			return;
+			show->showToast(error.type());
+			done(false);
+		} else {
+			if (!broadcast) {
+				channel->setStarsPerMessage(starsPerMessage);
+			}
+			done(true);
 		}
-		channel->setStarsPerMessage(starsPerMessage);
-		done();
 	}).send();
 
 	api->registerModifyRequest(key, requestId);
@@ -281,6 +295,7 @@ void SaveBoostsUnrestrict(
 void ShowEditPermissions(
 		not_null<Window::SessionNavigation*> navigation,
 		not_null<PeerData*> peer) {
+	const auto show = navigation->uiShow();
 	auto createBox = [=](not_null<Ui::GenericBox*> box) {
 		const auto saving = box->lifetime().make_state<int>(0);
 		const auto save = [=](
@@ -299,7 +314,10 @@ void ShowEditPermissions(
 					channel,
 					result.boostsUnrestrict,
 					close);
-				SaveStarsPerMessage(channel, result.starsPerMessage, close);
+				const auto price = result.starsPerMessage;
+				SaveStarsPerMessage(show, channel, price, [=](bool ok) {
+					close();
+				});
 			}
 		};
 		auto done = [=](EditPeerPermissionsBoxResult result) {
@@ -366,6 +384,7 @@ private:
 		std::optional<bool> joinToWrite;
 		std::optional<bool> requestToJoin;
 		std::optional<ChannelData*> discussionLink;
+		std::optional<int> starsPerDirectMessage;
 	};
 
 	[[nodiscard]] object_ptr<Ui::RpWidget> createPhotoAndTitleEdit();
@@ -382,8 +401,10 @@ private:
 	void showEditPeerTypeBox(
 		std::optional<rpl::producer<QString>> error = {});
 	void showEditDiscussionLinkBox();
+	void showEditDirectMessagesBox();
 	void fillPrivacyTypeButton();
 	void fillDiscussionLinkButton();
+	void fillDirectMessagesButton();
 	//void fillInviteLinkButton();
 	void fillForumButton();
 	void fillColorIndexButton();
@@ -412,6 +433,7 @@ private:
 	[[nodiscard]] bool validateUsernamesOrder(Saving &to) const;
 	[[nodiscard]] bool validateUsername(Saving &to) const;
 	[[nodiscard]] bool validateDiscussionLink(Saving &to) const;
+	[[nodiscard]] bool validateDirectMessagesPrice(Saving &to) const;
 	[[nodiscard]] bool validateTitle(Saving &to) const;
 	[[nodiscard]] bool validateDescription(Saving &to) const;
 	[[nodiscard]] bool validateHistoryVisibility(Saving &to) const;
@@ -426,6 +448,7 @@ private:
 	void saveUsernamesOrder();
 	void saveUsername();
 	void saveDiscussionLink();
+	void saveDirectMessagesPrice();
 	void saveTitle();
 	void saveDescription();
 	void saveHistoryVisibility();
@@ -454,6 +477,7 @@ private:
 	std::optional<ChannelData*> _discussionLinkSavedValue;
 	ChannelData *_discussionLinkOriginalValue = nullptr;
 	bool _channelHasLocationOriginalValue = false;
+	std::optional<rpl::variable<int>> _starsPerDirectMessageSavedValue;
 	std::optional<HistoryVisibility> _historyVisibilitySavedValue;
 	std::optional<EditPeerTypeData> _typeDataSavedValue;
 	std::optional<bool> _forumSavedValue;
@@ -918,6 +942,20 @@ void Controller::showEditDiscussionLinkBox() {
 	}).send();
 }
 
+void Controller::showEditDirectMessagesBox() {
+	Expects(_peer->isBroadcast());
+	Expects(_starsPerDirectMessageSavedValue.has_value());
+
+	const auto stars = _starsPerDirectMessageSavedValue->current();
+	_navigation->parentController()->show(Box(
+		EditDirectMessagesPriceBox,
+		_peer->asChannel(),
+		(stars >= 0) ? stars : std::optional<int>(),
+		[=](std::optional<int> value) {
+			*_starsPerDirectMessageSavedValue = value.value_or(-1);
+		}));
+}
+
 void Controller::fillPrivacyTypeButton() {
 	Expects(_controls.buttonsLayout != nullptr);
 
@@ -983,9 +1021,11 @@ void Controller::fillPrivacyTypeButton() {
 void Controller::fillDiscussionLinkButton() {
 	Expects(_controls.buttonsLayout != nullptr);
 
-	_discussionLinkSavedValue = _discussionLinkOriginalValue = _peer->isChannel()
-		? _peer->asChannel()->discussionLink()
-		: nullptr;
+	_discussionLinkSavedValue
+		= _discussionLinkOriginalValue
+		= (_peer->isChannel()
+			? _peer->asChannel()->discussionLink()
+			: nullptr);
 
 	const auto isGroup = (_peer->isChat() || _peer->isMegagroup());
 	auto text = !isGroup
@@ -1019,6 +1059,33 @@ void Controller::fillDiscussionLinkButton() {
 		{ isGroup ? &st::menuIconChannel : &st::menuIconGroups });
 	_discussionLinkUpdates.fire_copy(*_discussionLinkSavedValue);
 }
+
+void Controller::fillDirectMessagesButton() {
+	Expects(_controls.buttonsLayout != nullptr);
+
+	if (!_peer->isBroadcast() || !_peer->asChannel()->canEditInformation()) {
+		return;
+	}
+
+	const auto monoforumLink = _peer->asChannel()->monoforumLink();
+	_starsPerDirectMessageSavedValue = rpl::variable<int>(
+		monoforumLink ? monoforumLink->starsPerMessage() : -1);
+
+	auto label = _starsPerDirectMessageSavedValue->value(
+	) | rpl::map([](int starsPerMessage) {
+		return (starsPerMessage < 0)
+			? tr::lng_manage_monoforum_off()
+			: !starsPerMessage
+			? tr::lng_manage_monoforum_free()
+			: rpl::single(Lang::FormatCountDecimal(starsPerMessage));
+	}) | rpl::flatten_latest();
+	AddButtonWithText(
+		_controls.buttonsLayout,
+		tr::lng_manage_monoforum(),
+		std::move(label),
+		[=] { showEditDirectMessagesBox(); },
+		{ &st::menuIconChatBubble });
+}
 //
 //void Controller::fillInviteLinkButton() {
 //	Expects(_controls.buttonsLayout != nullptr);
@@ -1359,6 +1426,8 @@ void Controller::fillManageSection() {
 	const auto canViewOrEditDiscussionLink = isChannel
 		&& (channel->discussionLink()
 			|| (channel->isBroadcast() && channel->canEditInformation()));
+	const auto canEditDirectMessages = isChannel
+		&& (channel->isBroadcast() && channel->canEditInformation());
 
 	::AddSkip(_controls.buttonsLayout, 0);
 
@@ -1370,6 +1439,9 @@ void Controller::fillManageSection() {
 	if (canViewOrEditDiscussionLink) {
 		fillDiscussionLinkButton();
 	}
+	if (canEditDirectMessages) {
+		fillDirectMessagesButton();
+	}
 	if (canEditPreHistoryHidden) {
 		fillHistoryVisibilityButton();
 	}
@@ -1973,6 +2045,7 @@ std::optional<Controller::Saving> Controller::validate() const {
 	if (validateUsernamesOrder(result)
 		&& validateUsername(result)
 		&& validateDiscussionLink(result)
+		&& validateDirectMessagesPrice(result)
 		&& validateTitle(result)
 		&& validateDescription(result)
 		&& validateHistoryVisibility(result)
@@ -2022,6 +2095,14 @@ bool Controller::validateDiscussionLink(Saving &to) const {
 	return true;
 }
 
+bool Controller::validateDirectMessagesPrice(Saving &to) const {
+	if (!_starsPerDirectMessageSavedValue) {
+		return true;
+	}
+	to.starsPerDirectMessage = _starsPerDirectMessageSavedValue->current();
+	return true;
+}
+
 bool Controller::validateTitle(Saving &to) const {
 	if (!_controls.title) {
 		return true;
@@ -2120,6 +2201,7 @@ void Controller::save() {
 		pushSaveStage([=] { saveUsernamesOrder(); });
 		pushSaveStage([=] { saveUsername(); });
 		pushSaveStage([=] { saveDiscussionLink(); });
+		pushSaveStage([=] { saveDirectMessagesPrice(); });
 		pushSaveStage([=] { saveTitle(); });
 		pushSaveStage([=] { saveDescription(); });
 		pushSaveStage([=] { saveHistoryVisibility(); });
@@ -2277,6 +2359,30 @@ void Controller::saveDiscussionLink() {
 	}).send();
 }
 
+void Controller::saveDirectMessagesPrice() {
+	const auto channel = _peer->asChannel();
+	if (!channel) {
+		return continueSave();
+	}
+	const auto monoforumLink = channel->monoforumLink();
+	const auto current = monoforumLink ? monoforumLink->starsPerMessage() : -1;
+	const auto desired = _savingData.starsPerDirectMessage
+		? *_savingData.starsPerDirectMessage
+		: current;
+	if (desired == current) {
+		return continueSave();
+	}
+	const auto show = _navigation->uiShow();
+	const auto done = [=](bool ok) {
+		if (ok) {
+			continueSave();
+		} else {
+			cancelSave();
+		}
+	};
+	SaveStarsPerMessage(show, channel, desired, crl::guard(this, done));
+}
+
 void Controller::saveTitle() {
 	if (!_savingData.title || *_savingData.title == _peer->name()) {
 		return continueSave();

Telegram/SourceFiles/boxes/premium_limits_box.cpp

@@ -907,6 +907,7 @@ void PinsLimitBox(
 		limits.dialogsPinnedPremium(),
 		PinsCount(session->data().chatsList()));
 }
+
 void SublistsPinsLimitBox(
 		not_null<Ui::GenericBox*> box,
 		not_null<Main::Session*> session) {