/*
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 "boxes/peers/edit_participant_box.h"

#include "lang/lang_keys.h"
#include "ui/wrap/vertical_layout.h"
#include "ui/wrap/padding_wrap.h"
#include "ui/wrap/slide_wrap.h"
#include "ui/widgets/checkbox.h"
#include "ui/widgets/labels.h"
#include "ui/widgets/buttons.h"
#include "ui/widgets/input_fields.h"
#include "ui/widgets/box_content_divider.h"
#include "ui/layers/generic_box.h"
#include "ui/toast/toast.h"
#include "ui/text/text_utilities.h"
#include "ui/text/text_options.h"
#include "ui/boxes/calendar_box.h"
#include "ui/special_buttons.h"
#include "chat_helpers/emoji_suggestions_widget.h"
#include "settings/settings_privacy_security.h"
#include "boxes/confirm_box.h"
#include "boxes/passcode_box.h"
#include "boxes/peers/edit_peer_permissions_box.h"
#include "boxes/peers/edit_peer_info_box.h"
#include "data/data_peer_values.h"
#include "data/data_channel.h"
#include "data/data_chat.h"
#include "data/data_user.h"
#include "core/core_cloud_password.h"
#include "base/unixtime.h"
#include "base/qt_adapters.h"
#include "apiwrap.h"
#include "main/main_session.h"
#include "styles/style_layers.h"
#include "styles/style_boxes.h"
#include "styles/style_info.h"

namespace {

constexpr auto kMaxRestrictDelayDays = 366;
constexpr auto kSecondsInDay = 24 * 60 * 60;
constexpr auto kSecondsInWeek = 7 * kSecondsInDay;
constexpr auto kAdminRoleLimit = 16;

} // namespace

class EditParticipantBox::Inner : public Ui::RpWidget {
public:
	Inner(
		QWidget *parent,
		not_null<PeerData*> peer,
		not_null<UserData*> user,
		bool hasAdminRights);

	template <typename Widget>
	Widget *addControl(object_ptr<Widget> widget, QMargins margin);

protected:
	int resizeGetHeight(int newWidth) override;
	void paintEvent(QPaintEvent *e) override;

private:
	not_null<PeerData*> _peer;
	not_null<UserData*> _user;
	object_ptr<Ui::UserpicButton> _userPhoto;
	Ui::Text::String _userName;
	bool _hasAdminRights = false;
	object_ptr<Ui::VerticalLayout> _rows;

};

EditParticipantBox::Inner::Inner(
	QWidget *parent,
	not_null<PeerData*> peer,
	not_null<UserData*> user,
	bool hasAdminRights)
: RpWidget(parent)
, _peer(peer)
, _user(user)
, _userPhoto(
	this,
	_user,
	Ui::UserpicButton::Role::Custom,
	st::rightsPhotoButton)
, _hasAdminRights(hasAdminRights)
, _rows(this) {
	_rows->heightValue(
	) | rpl::start_with_next([=] {
		resizeToWidth(width());
	}, lifetime());

	_userPhoto->setPointerCursor(false);
	_userName.setText(
		st::rightsNameStyle,
		_user->name,
		Ui::NameTextOptions());
}

template <typename Widget>
Widget *EditParticipantBox::Inner::addControl(
		object_ptr<Widget> widget,
		QMargins margin) {
	return _rows->add(std::move(widget), margin);
}

int EditParticipantBox::Inner::resizeGetHeight(int newWidth) {
	_userPhoto->moveToLeft(
		st::rightsPhotoMargin.left(),
		st::rightsPhotoMargin.top());
	const auto rowsTop = st::rightsPhotoMargin.top()
		+ st::rightsPhotoButton.size.height()
		+ st::rightsPhotoMargin.bottom();
	_rows->resizeToWidth(newWidth);
	_rows->moveToLeft(0, rowsTop, newWidth);
	return rowsTop + _rows->heightNoMargins();
}

void EditParticipantBox::Inner::paintEvent(QPaintEvent *e) {
	Painter p(this);

	p.fillRect(e->rect(), st::boxBg);

	p.setPen(st::contactsNameFg);
	auto namex = st::rightsPhotoMargin.left()
		+ st::rightsPhotoButton.size .width()
		+ st::rightsPhotoMargin.right();
	auto namew = width() - namex - st::rightsPhotoMargin.right();
	_userName.drawLeftElided(
		p,
		namex,
		st::rightsPhotoMargin.top() + st::rightsNameTop,
		namew,
		width());
	const auto statusText = [&] {
		if (_user->isBot()) {
			const auto seesAllMessages = _user->botInfo->readsAllHistory
				|| _hasAdminRights;
			return (seesAllMessages
				? tr::lng_status_bot_reads_all
				: tr::lng_status_bot_not_reads_all)(tr::now);
		}
		return Data::OnlineText(_user->onlineTill, base::unixtime::now());
	}();
	p.setFont(st::contactsStatusFont);
	p.setPen(st::contactsStatusFg);
	p.drawTextLeft(
		namex,
		st::rightsPhotoMargin.top() + st::rightsStatusTop,
		width(),
		statusText);
}

EditParticipantBox::EditParticipantBox(
	QWidget*,
	not_null<PeerData*> peer,
	not_null<UserData*> user,
	bool hasAdminRights)
: _peer(peer)
, _user(user)
, _hasAdminRights(hasAdminRights) {
}

void EditParticipantBox::prepare() {
	_inner = setInnerWidget(object_ptr<Inner>(
		this,
		_peer,
		_user,
		hasAdminRights()));
	setDimensionsToContent(st::boxWideWidth, _inner);
}

template <typename Widget>
Widget *EditParticipantBox::addControl(
		object_ptr<Widget> widget,
		QMargins margin) {
	Expects(_inner != nullptr);

	return _inner->addControl(std::move(widget), margin);
}

bool EditParticipantBox::amCreator() const {
	if (const auto chat = _peer->asChat()) {
		return chat->amCreator();
	} else if (const auto channel = _peer->asChannel()) {
		return channel->amCreator();
	}
	Unexpected("Peer type in EditParticipantBox::Inner::amCreator.");
}

EditAdminBox::EditAdminBox(
	QWidget*,
	not_null<PeerData*> peer,
	not_null<UserData*> user,
	const MTPChatAdminRights &rights,
	const QString &rank)
: EditParticipantBox(
	nullptr,
	peer,
	user,
	(rights.c_chatAdminRights().vflags().v != 0))
, _oldRights(rights)
, _oldRank(rank) {
}

MTPChatAdminRights EditAdminBox::defaultRights() const {
	const auto flags = peer()->isChat()
		? peer()->asChat()->defaultAdminRights(user())
		: peer()->isMegagroup()
		? (Flag::f_change_info
			| Flag::f_delete_messages
			| Flag::f_ban_users
			| Flag::f_invite_users
			| Flag::f_pin_messages
			| Flag::f_manage_call)
		: (Flag::f_change_info
			| Flag::f_post_messages
			| Flag::f_edit_messages
			| Flag::f_delete_messages
			| Flag::f_invite_users
			| Flag::f_manage_call);
	return MTP_chatAdminRights(MTP_flags(flags));
}

void EditAdminBox::prepare() {
	using namespace rpl::mappers;

	EditParticipantBox::prepare();

	auto hadRights = _oldRights.c_chatAdminRights().vflags().v;
	setTitle(hadRights
		? tr::lng_rights_edit_admin()
		: tr::lng_channel_add_admin());

	addControl(
		object_ptr<Ui::BoxContentDivider>(this),
		st::rightsDividerMargin);

	const auto chat = peer()->asChat();
	const auto channel = peer()->asChannel();
	const auto prepareRights = hadRights ? _oldRights : defaultRights();
	const auto disabledByDefaults = (channel && !channel->isMegagroup())
		? MTPDchatAdminRights::Flags(0)
		: DisabledByDefaultRestrictions(peer());
	const auto filterByMyRights = canSave()
		&& !hadRights
		&& channel
		&& !channel->amCreator();
	const auto prepareFlags = disabledByDefaults
		| (prepareRights.c_chatAdminRights().vflags().v
			& (filterByMyRights ? channel->adminRights() : ~Flag(0)));

	const auto disabledMessages = [&] {
		auto result = std::map<Flags, QString>();
		if (!canSave()) {
			result.emplace(
				~Flags(0),
				tr::lng_rights_about_admin_cant_edit(tr::now));
		} else {
			result.emplace(
				disabledByDefaults,
				tr::lng_rights_permission_for_all(tr::now));
			if (amCreator() && user()->isSelf()) {
				result.emplace(
					~Flag::f_anonymous,
					tr::lng_rights_permission_cant_edit(tr::now));
			} else if (const auto channel = peer()->asChannel()) {
				if (!channel->amCreator()) {
					result.emplace(
						~channel->adminRights(),
						tr::lng_rights_permission_cant_edit(tr::now));
				}
			}
		}
		return result;
	}();

	const auto isGroup = chat || channel->isMegagroup();
	const auto anyoneCanAddMembers = chat
		? chat->anyoneCanAddMembers()
		: channel->anyoneCanAddMembers();
	auto [checkboxes, getChecked, changes] = CreateEditAdminRights(
		this,
		tr::lng_rights_edit_admin_header(),
		prepareFlags,
		disabledMessages,
		isGroup,
		anyoneCanAddMembers);
	addControl(std::move(checkboxes), QMargins());

	auto selectedFlags = rpl::single(
		getChecked()
	) | rpl::then(std::move(
		changes
	));
	_aboutAddAdmins = addControl(
		object_ptr<Ui::FlatLabel>(this, st::boxDividerLabel),
		st::rightsAboutMargin);
	rpl::duplicate(
		selectedFlags
	) | rpl::map(
		(_1 & Flag::f_add_admins) != 0
	) | rpl::distinct_until_changed(
	) | rpl::start_with_next([=](bool checked) {
		refreshAboutAddAdminsText(checked);
	}, lifetime());

	if (canTransferOwnership()) {
		const auto allFlags = AdminRightsForOwnershipTransfer(isGroup);
		setupTransferButton(
			isGroup
		)->toggleOn(rpl::duplicate(
			selectedFlags
		) | rpl::map(
			((_1 & allFlags) == allFlags)
		))->setDuration(0);
	}

	if (canSave()) {
		const auto rank = (chat || channel->isMegagroup())
			? addRankInput().get()
			: nullptr;

		addButton(tr::lng_settings_save(), [=, value = getChecked] {
			if (!_saveCallback) {
				return;
			}
			const auto newFlags = (value() | ChatAdminRight::f_other)
				& ((!channel || channel->amCreator())
					? ~Flags(0)
					: channel->adminRights());
			_saveCallback(
				_oldRights,
				MTP_chatAdminRights(MTP_flags(newFlags)),
				rank ? rank->getLastText().trimmed() : QString());
		});
		addButton(tr::lng_cancel(), [=] { closeBox(); });
	} else {
		addButton(tr::lng_box_ok(), [=] { closeBox(); });
	}
}

not_null<Ui::InputField*> EditAdminBox::addRankInput() {
	addControl(
		object_ptr<Ui::BoxContentDivider>(this),
		st::rightsRankMargin);

	addControl(
		object_ptr<Ui::FlatLabel>(
			this,
			tr::lng_rights_edit_admin_rank_name(),
			st::rightsHeaderLabel),
		st::rightsHeaderMargin);

	const auto isOwner = [&] {
		if (user()->isSelf() && amCreator()) {
			return true;
		} else if (const auto chat = peer()->asChat()) {
			return chat->creator == peerToUser(user()->id);
		} else if (const auto channel = peer()->asChannel()) {
			return channel->mgInfo && channel->mgInfo->creator == user();
		}
		Unexpected("Peer type in EditAdminBox::addRankInput.");
	}();
	const auto result = addControl(
		object_ptr<Ui::InputField>(
			this,
			st::customBadgeField,
			(isOwner ? tr::lng_owner_badge : tr::lng_admin_badge)(),
			TextUtilities::RemoveEmoji(_oldRank)),
		st::rightsAboutMargin);
	result->setMaxLength(kAdminRoleLimit);
	result->setInstantReplaces(Ui::InstantReplaces::TextOnly());
	connect(result, &Ui::InputField::changed, [=] {
		const auto text = result->getLastText();
		const auto removed = TextUtilities::RemoveEmoji(text);
		if (removed != text) {
			result->setText(removed);
		}
	});

	addControl(
		object_ptr<Ui::FlatLabel>(
			this,
			tr::lng_rights_edit_admin_rank_about(
				lt_title,
				(isOwner ? tr::lng_owner_badge : tr::lng_admin_badge)()),
			st::boxDividerLabel),
		st::rightsAboutMargin);

	return result;
}

bool EditAdminBox::canTransferOwnership() const {
	if (user()->isInaccessible() || user()->isBot() || user()->isSelf()) {
		return false;
	} else if (const auto chat = peer()->asChat()) {
		return chat->amCreator();
	} else if (const auto channel = peer()->asChannel()) {
		return channel->amCreator();
	}
	Unexpected("Chat type in EditAdminBox::canTransferOwnership.");
}

not_null<Ui::SlideWrap<Ui::RpWidget>*> EditAdminBox::setupTransferButton(
		bool isGroup) {
	const auto wrap = addControl(
		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
			this,
			object_ptr<Ui::VerticalLayout>(this)));

	const auto container = wrap->entity();

	container->add(
		object_ptr<Ui::BoxContentDivider>(container),
		{ 0, st::infoProfileSkip, 0, st::infoProfileSkip });
	container->add(EditPeerInfoBox::CreateButton(
		this,
		(isGroup
			? tr::lng_rights_transfer_group
			: tr::lng_rights_transfer_channel)(),
		rpl::single(QString()),
		[=] { transferOwnership(); },
		st::peerPermissionsButton));

	return wrap;
}

void EditAdminBox::transferOwnership() {
	if (_checkTransferRequestId) {
		return;
	}

	const auto channel = peer()->isChannel()
		? peer()->asChannel()->inputChannel
		: MTP_inputChannelEmpty();
	const auto api = &peer()->session().api();
	api->reloadPasswordState();
	_checkTransferRequestId = api->request(MTPchannels_EditCreator(
		channel,
		MTP_inputUserEmpty(),
		MTP_inputCheckPasswordEmpty()
	)).fail([=](const MTP::Error &error) {
		_checkTransferRequestId = 0;
		if (!handleTransferPasswordError(error)) {
			getDelegate()->show(Box<ConfirmBox>(
				tr::lng_rights_transfer_about(
					tr::now,
					lt_group,
					Ui::Text::Bold(peer()->name),
					lt_user,
					Ui::Text::Bold(user()->shortName()),
					Ui::Text::RichLangValue),
				tr::lng_rights_transfer_sure(tr::now),
				crl::guard(this, [=] { transferOwnershipChecked(); })));
		}
	}).send();
}

bool EditAdminBox::handleTransferPasswordError(const MTP::Error &error) {
	const auto session = &user()->session();
	auto about = tr::lng_rights_transfer_check_about(
		tr::now,
		lt_user,
		Ui::Text::Bold(user()->shortName()),
		Ui::Text::WithEntities);
	if (auto box = PrePasswordErrorBox(error, session, std::move(about))) {
		getDelegate()->show(std::move(box));
		return true;
	}
	return false;
}

void EditAdminBox::transferOwnershipChecked() {
	if (const auto chat = peer()->asChatNotMigrated()) {
		peer()->session().api().migrateChat(chat, crl::guard(this, [=](
				not_null<ChannelData*> channel) {
			requestTransferPassword(channel);
		}));
	} else if (const auto channel = peer()->asChannelOrMigrated()) {
		requestTransferPassword(channel);
	} else {
		Unexpected("Peer in SaveAdminCallback.");
	}

}

void EditAdminBox::requestTransferPassword(not_null<ChannelData*> channel) {
	peer()->session().api().passwordState(
	) | rpl::take(
		1
	) | rpl::start_with_next([=](const Core::CloudPasswordState &state) {
		const auto box = std::make_shared<QPointer<PasscodeBox>>();
		auto fields = PasscodeBox::CloudFields::From(state);
		fields.customTitle = tr::lng_rights_transfer_password_title();
		fields.customDescription
			= tr::lng_rights_transfer_password_description(tr::now);
		fields.customSubmitButton = tr::lng_passcode_submit();
		fields.customCheckCallback = crl::guard(this, [=](
				const Core::CloudPasswordResult &result) {
			sendTransferRequestFrom(*box, channel, result);
		});
		*box = getDelegate()->show(Box<PasscodeBox>(
			&channel->session(),
			fields));
	}, lifetime());
}

void EditAdminBox::sendTransferRequestFrom(
		QPointer<PasscodeBox> box,
		not_null<ChannelData*> channel,
		const Core::CloudPasswordResult &result) {
	if (_transferRequestId) {
		return;
	}
	const auto weak = Ui::MakeWeak(this);
	const auto user = this->user();
	const auto api = &channel->session().api();
	_transferRequestId = api->request(MTPchannels_EditCreator(
		channel->inputChannel,
		user->inputUser,
		result.result
	)).done([=](const MTPUpdates &result) {
		api->applyUpdates(result);
		Ui::Toast::Show((channel->isBroadcast()
			? tr::lng_rights_transfer_done_channel
			: tr::lng_rights_transfer_done_group)(
				tr::now,
				lt_user,
				user->shortName()));
		Ui::hideLayer();
	}).fail(crl::guard(this, [=](const MTP::Error &error) {
		if (weak) {
			_transferRequestId = 0;
		}
		if (box && box->handleCustomCheckError(error)) {
			return;
		}

		const auto &type = error.type();
		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
					: tr::lng_error_admin_limit)(tr::now);
			} else if (type == qstr("CHANNEL_INVALID")) {
				return (channel->isBroadcast()
					? tr::lng_channel_not_accessible
					: tr::lng_group_not_accessible)(tr::now);
			}
			return Lang::Hard::ServerError();
		}();
		const auto recoverable = [&] {
			return (type == qstr("PASSWORD_MISSING"))
				|| (type == qstr("PASSWORD_TOO_FRESH_XXX"))
				|| (type == qstr("SESSION_TOO_FRESH_XXX"));
		}();
		const auto weak = Ui::MakeWeak(this);
		getDelegate()->show(Box<InformBox>(problem));
		if (box) {
			box->closeBox();
		}
		if (weak && !recoverable) {
			closeBox();
		}
	})).handleFloodErrors().send();
}

void EditAdminBox::refreshAboutAddAdminsText(bool canAddAdmins) {
	_aboutAddAdmins->setText([&] {
		if (amCreator() && user()->isSelf()) {
			return QString();
		} else if (!canSave()) {
			return tr::lng_rights_about_admin_cant_edit(tr::now);
		} else if (canAddAdmins) {
			return tr::lng_rights_about_add_admins_yes(tr::now);
		}
		return tr::lng_rights_about_add_admins_no(tr::now);
	}());
}

EditRestrictedBox::EditRestrictedBox(
	QWidget*,
	not_null<PeerData*> peer,
	not_null<UserData*> user,
	bool hasAdminRights,
	const MTPChatBannedRights &rights)
: EditParticipantBox(nullptr, peer, user, hasAdminRights)
, _oldRights(rights) {
}

void EditRestrictedBox::prepare() {
	EditParticipantBox::prepare();

	setTitle(tr::lng_rights_user_restrictions());

	addControl(
		object_ptr<Ui::BoxContentDivider>(this),
		st::rightsDividerMargin);

	const auto chat = peer()->asChat();
	const auto channel = peer()->asChannel();
	const auto defaultRestrictions = chat
		? chat->defaultRestrictions()
		: channel->defaultRestrictions();
	const auto prepareRights = Data::ChatBannedRightsFlags(_oldRights)
		? _oldRights
		: defaultRights();
	const auto prepareFlags = FixDependentRestrictions(
		Data::ChatBannedRightsFlags(prepareRights)
		| defaultRestrictions
		| ((channel && channel->isPublic())
			? (Flag::f_change_info | Flag::f_pin_messages)
			: Flags(0)));
	const auto disabledMessages = [&] {
		auto result = std::map<Flags, QString>();
		if (!canSave()) {
			result.emplace(
				~Flags(0),
				tr::lng_rights_about_restriction_cant_edit(tr::now));
		} else {
			const auto disabled = FixDependentRestrictions(
				defaultRestrictions
				| ((channel && channel->isPublic())
					? (Flag::f_change_info | Flag::f_pin_messages)
					: Flags(0)));
			result.emplace(
				disabled,
				tr::lng_rights_restriction_for_all(tr::now));
		}
		return result;
	}();

	auto [checkboxes, getRestrictions, changes] = CreateEditRestrictions(
		this,
		tr::lng_rights_user_restrictions_header(),
		prepareFlags,
		disabledMessages);
	addControl(std::move(checkboxes), QMargins());

	_until = Data::ChatBannedRightsUntilDate(prepareRights);
	addControl(object_ptr<Ui::BoxContentDivider>(this), st::rightsUntilMargin);
	addControl(
		object_ptr<Ui::FlatLabel>(
			this,
			tr::lng_rights_chat_banned_until_header(tr::now),
			st::rightsHeaderLabel),
		st::rightsHeaderMargin);
	setRestrictUntil(_until);

	//addControl(
	//	object_ptr<Ui::LinkButton>(
	//		this,
	//		tr::lng_rights_chat_banned_block(tr::now),
	//		st::boxLinkButton));

	if (canSave()) {
		const auto save = [=, value = getRestrictions] {
			if (!_saveCallback) {
				return;
			}
			_saveCallback(
				_oldRights,
				MTP_chatBannedRights(
					MTP_flags(value()),
					MTP_int(getRealUntilValue())));
		};
		addButton(tr::lng_settings_save(), save);
		addButton(tr::lng_cancel(), [=] { closeBox(); });
	} else {
		addButton(tr::lng_box_ok(), [=] { closeBox(); });
	}
}

MTPChatBannedRights EditRestrictedBox::defaultRights() const {
	return MTP_chatBannedRights(MTP_flags(0), MTP_int(0));
}

void EditRestrictedBox::showRestrictUntil() {
	auto tomorrow = QDate::currentDate().addDays(1);
	auto highlighted = isUntilForever()
		? tomorrow
		: base::unixtime::parse(getRealUntilValue()).date();
	auto month = highlighted;
	_restrictUntilBox = Ui::show(
		Box<Ui::CalendarBox>(
			month,
			highlighted,
			[this](const QDate &date) {
				setRestrictUntil(
					static_cast<int>(base::QDateToDateTime(date).toTime_t()));
			}),
		Ui::LayerOption::KeepOther);
	_restrictUntilBox->setMaxDate(
		QDate::currentDate().addDays(kMaxRestrictDelayDays));
	_restrictUntilBox->setMinDate(tomorrow);
	_restrictUntilBox->addLeftButton(
		tr::lng_rights_chat_banned_forever(),
		[=] { setRestrictUntil(0); });
}

void EditRestrictedBox::setRestrictUntil(TimeId until) {
	_until = until;
	if (_restrictUntilBox) {
		_restrictUntilBox->closeBox();
	}
	_untilVariants.clear();
	createUntilGroup();
	createUntilVariants();
}

bool EditRestrictedBox::isUntilForever() const {
	return ChannelData::IsRestrictedForever(_until);
}

void EditRestrictedBox::createUntilGroup() {
	_untilGroup = std::make_shared<Ui::RadiobuttonGroup>(
		isUntilForever() ? 0 : _until);
	_untilGroup->setChangedCallback([this](int value) {
		if (value == kUntilCustom) {
			_untilGroup->setValue(_until);
			showRestrictUntil();
		} else if (_until != value) {
			_until = value;
		}
	});
}

void EditRestrictedBox::createUntilVariants() {
	auto addVariant = [&](int value, const QString &text) {
		if (!canSave() && _untilGroup->value() != value) {
			return;
		}
		_untilVariants.emplace_back(
			addControl(
				object_ptr<Ui::Radiobutton>(
					this,
					_untilGroup,
					value,
					text,
					st::defaultCheckbox),
				st::rightsToggleMargin));
		if (!canSave()) {
			_untilVariants.back()->setDisabled(true);
		}
	};
	auto addCustomVariant = [&](TimeId until, TimeId from, TimeId to) {
		if (!ChannelData::IsRestrictedForever(until)
			&& until > from
			&& until <= to) {
			addVariant(
				until,
				tr::lng_rights_chat_banned_custom_date(
					tr::now,
					lt_date,
					langDayOfMonthFull(
						base::unixtime::parse(until).date())));
		}
	};
	auto addCurrentVariant = [&](TimeId from, TimeId to) {
		auto oldUntil = Data::ChatBannedRightsUntilDate(_oldRights);
		if (oldUntil < _until) {
			addCustomVariant(oldUntil, from, to);
		}
		addCustomVariant(_until, from, to);
		if (oldUntil > _until) {
			addCustomVariant(oldUntil, from, to);
		}
	};
	addVariant(0, tr::lng_rights_chat_banned_forever(tr::now));

	auto now = base::unixtime::now();
	auto nextDay = now + kSecondsInDay;
	auto nextWeek = now + kSecondsInWeek;
	addCurrentVariant(0, nextDay);
	addVariant(kUntilOneDay, tr::lng_rights_chat_banned_day(tr::now, lt_count, 1));
	addCurrentVariant(nextDay, nextWeek);
	addVariant(kUntilOneWeek, tr::lng_rights_chat_banned_week(tr::now, lt_count, 1));
	addCurrentVariant(nextWeek, INT_MAX);
	addVariant(kUntilCustom, tr::lng_rights_chat_banned_custom(tr::now));
}

TimeId EditRestrictedBox::getRealUntilValue() const {
	Expects(_until != kUntilCustom);
	if (_until == kUntilOneDay) {
		return base::unixtime::now() + kSecondsInDay;
	} else if (_until == kUntilOneWeek) {
		return base::unixtime::now() + kSecondsInWeek;
	}
	Assert(_until >= 0);
	return _until;
}
