/*
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 "settings/settings_privacy_security.h"

#include "settings/settings_common.h"
#include "old_settings/settings_privacy_controllers.h"
#include "boxes/peer_list_box.h"
#include "boxes/edit_privacy_box.h"
#include "boxes/passcode_box.h"
#include "boxes/autolock_box.h"
#include "boxes/sessions_box.h"
#include "boxes/confirm_box.h"
#include "boxes/self_destruction_box.h"
#include "ui/wrap/vertical_layout.h"
#include "ui/wrap/slide_wrap.h"
#include "ui/widgets/shadow.h"
#include "ui/widgets/labels.h"
#include "core/core_cloud_password.h"
#include "core/update_checker.h"
#include "info/profile/info_profile_button.h"
#include "platform/platform_specific.h"
#include "lang/lang_keys.h"
#include "data/data_session.h"
#include "auth_session.h"
#include "apiwrap.h"
#include "styles/style_settings.h"
#include "styles/style_boxes.h"

namespace Settings {
namespace {

rpl::producer<> PasscodeChanges() {
	return rpl::single(
		rpl::empty_value()
	) | rpl::then(base::ObservableViewer(
		Global::RefLocalPasscodeChanged()
	));
}

void SetupPrivacy(not_null<Ui::VerticalLayout*> container) {
	AddDivider(container);
	AddSkip(container);

	AddSubsectionTitle(container, lng_settings_privacy_title);
	AddButton(
		container,
		lng_settings_blocked_users,
		st::settingsButton
	)->addClickHandler([] {
		const auto initBox = [](not_null<PeerListBox*> box) {
			box->addButton(langFactory(lng_close), [=] {
				box->closeBox();
			});
			box->addLeftButton(langFactory(lng_blocked_list_add), [] {
				OldSettings::BlockedBoxController::BlockNewUser();
			});
		};
		Ui::show(Box<PeerListBox>(
			std::make_unique<OldSettings::BlockedBoxController>(),
			initBox));
	});

	AddButton(
		container,
		lng_settings_last_seen,
		st::settingsButton
	)->addClickHandler([] {
		Ui::show(Box<EditPrivacyBox>(
			std::make_unique<OldSettings::LastSeenPrivacyController>()));
	});
	AddButton(
		container,
		lng_settings_calls,
		st::settingsButton
	)->addClickHandler([] {
		Ui::show(Box<EditPrivacyBox>(
			std::make_unique<OldSettings::CallsPrivacyController>()));
	});
	AddButton(
		container,
		lng_settings_groups_invite,
		st::settingsButton
	)->addClickHandler([] {
		Ui::show(Box<EditPrivacyBox>(
			std::make_unique<OldSettings::GroupsInvitePrivacyController>()));
	});

	AddSkip(container);
	AddDividerText(
		container,
		Lang::Viewer(lng_settings_group_privacy_about));
}

not_null<Ui::SlideWrap<Ui::PlainShadow>*> AddSeparator(
		not_null<Ui::VerticalLayout*> container) {
	return container->add(
		object_ptr<Ui::SlideWrap<Ui::PlainShadow>>(
			container,
			object_ptr<Ui::PlainShadow>(container),
			st::settingsSeparatorPadding));
}

rpl::producer<bool> SetupLocalPasscode(
		not_null<Ui::VerticalLayout*> container) {
	auto has = PasscodeChanges(
	) | rpl::map([] {
		return Global::LocalPasscode();
	});
	auto text = rpl::combine(
		Lang::Viewer(lng_passcode_change),
		Lang::Viewer(lng_passcode_turn_on),
		base::duplicate(has),
		[](const QString &change, const QString &create, bool has) {
			return has ? change : create;
		});
	container->add(
		object_ptr<Button>(
			container,
			std::move(text),
			st::settingsButton)
	)->addClickHandler([] {
		Ui::show(Box<PasscodeBox>(false));
	});

	const auto wrap = container->add(
		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
			container,
			object_ptr<Ui::VerticalLayout>(container)));
	const auto inner = wrap->entity();
	inner->add(
		object_ptr<Button>(
			inner,
			Lang::Viewer(lng_settings_passcode_disable),
			st::settingsButton)
	)->addClickHandler([] {
		Ui::show(Box<PasscodeBox>(true));
	});

	const auto label = psIdleSupported()
		? lng_passcode_autolock_away
		: lng_passcode_autolock_inactive;
	auto value = PasscodeChanges(
	) | rpl::map([] {
		const auto autolock = Global::AutoLock();
		return (autolock % 3600)
			? lng_passcode_autolock_minutes(lt_count, autolock / 60)
			: lng_passcode_autolock_hours(lt_count, autolock / 3600);
	});

	const auto autolock = inner->add(
		object_ptr<Button>(
			inner,
			Lang::Viewer(label),
			st::settingsButton));
	CreateRightLabel(autolock, std::move(value));
	autolock->addClickHandler([] {
		Ui::show(Box<AutoLockBox>());
	});

	wrap->toggleOn(base::duplicate(has));

	return std::move(has);
}

bool CheckEditCloudPassword() {
	const auto current = Auth().api().passwordStateCurrent();
	Assert(current.has_value());
	if (!current->unknownAlgorithm
		&& current->newPassword
		&& current->newSecureSecret) {
		return true;
	}
	auto box = std::make_shared<QPointer<BoxContent>>();
	const auto callback = [=] {
		Core::UpdateApplication();
		if (*box) (*box)->closeBox();
	};
	*box = Ui::show(Box<ConfirmBox>(
		lang(lng_passport_app_out_of_date),
		lang(lng_menu_update),
		callback));
	return false;
}

void EditCloudPassword() {
	const auto current = Auth().api().passwordStateCurrent();
	Assert(current.has_value());

	const auto box = Ui::show(Box<PasscodeBox>(
		current->request,
		current->newPassword,
		current->hasRecovery,
		current->notEmptyPassport,
		current->hint,
		current->newSecureSecret));
	rpl::merge(
		box->newPasswordSet() | rpl::map([] { return rpl::empty_value(); }),
		box->passwordReloadNeeded()
	) | rpl::start_with_next([=] {
		Auth().api().reloadPasswordState();
	}, box->lifetime());
}

void RemoveCloudPassword() {
	const auto current = Auth().api().passwordStateCurrent();
	Assert(current.has_value());

	if (!current->request) {
		Auth().api().clearUnconfirmedPassword();
		return;
	}
	const auto box = Ui::show(Box<PasscodeBox>(
		current->request,
		current->newPassword,
		current->hasRecovery,
		current->notEmptyPassport,
		current->hint,
		current->newSecureSecret,
		true));
	rpl::merge(
		box->newPasswordSet(
		) | rpl::map([] { return rpl::empty_value(); }),
		box->passwordReloadNeeded()
	) | rpl::start_with_next([=] {
		Auth().api().reloadPasswordState();
	}, box->lifetime());
}

rpl::producer<bool> SetupCloudPassword(
		not_null<Ui::VerticalLayout*> container) {
	using State = Core::CloudPasswordState;

	auto has = rpl::single(
		false
	) | rpl::then(Auth().api().passwordState(
	) | rpl::map([](const State &state) {
		return state.request
			|| state.unknownAlgorithm
			|| !state.unconfirmedPattern.isEmpty();
	})) | rpl::distinct_until_changed();
	auto pattern = Auth().api().passwordState(
	) | rpl::map([](const State &state) {
		return state.unconfirmedPattern;
	});
	auto confirmation = rpl::single(
		lang(lng_profile_loading)
	) | rpl::then(base::duplicate(
		pattern
	) | rpl::filter([](const QString &pattern) {
		return !pattern.isEmpty();
	}) | rpl::map([](const QString &pattern) {
		return lng_cloud_password_waiting(lt_email, pattern);
	}));
	auto unconfirmed = rpl::single(
		true
	) | rpl::then(base::duplicate(
		pattern
	) | rpl::map([](const QString &pattern) {
		return !pattern.isEmpty();
	}));
	const auto label = container->add(
		object_ptr<Ui::SlideWrap<Ui::FlatLabel>>(
			container,
			object_ptr<Ui::FlatLabel>(
				container,
				base::duplicate(confirmation),
				st::settingsCloudPasswordLabel),
			QMargins(
				st::settingsButton.padding.left(),
				st::settingsButton.padding.top(),
				st::settingsButton.padding.right(),
				(st::settingsButton.height
					- st::settingsCloudPasswordLabel.style.font->height
					+ st::settingsButton.padding.bottom()))));
	label->toggleOn(base::duplicate(unconfirmed))->setDuration(0);

	std::move(
		confirmation
	) | rpl::start_with_next([=] {
		container->resizeToWidth(container->width());
	}, label->lifetime());

	auto text = rpl::combine(
		Lang::Viewer(lng_cloud_password_set),
		Lang::Viewer(lng_cloud_password_edit),
		base::duplicate(has)
	) | rpl::map([](const QString &set, const QString &edit, bool has) {
		return has ? edit : set;
	});
	const auto change = container->add(
		object_ptr<Ui::SlideWrap<Button>>(
			container,
			object_ptr<Button>(
				container,
				std::move(text),
				st::settingsButton)));
	change->toggleOn(std::move(
		unconfirmed
	) | rpl::map([](bool unconfirmed) {
		return !unconfirmed;
	}))->setDuration(0);
	change->entity()->addClickHandler([] {
		if (CheckEditCloudPassword()) {
			EditCloudPassword();
		}
	});

	const auto disable = container->add(
		object_ptr<Ui::SlideWrap<Button>>(
			container,
			object_ptr<Button>(
				container,
				Lang::Viewer(lng_settings_password_disable),
				st::settingsButton)));
	disable->toggleOn(base::duplicate(has));
	disable->entity()->addClickHandler([] {
		if (CheckEditCloudPassword()) {
			RemoveCloudPassword();
		}
	});

	const auto reloadOnActivation = [=](Qt::ApplicationState state) {
		if (label->toggled() && state == Qt::ApplicationActive) {
			Auth().api().reloadPasswordState();
		}
	};
	QObject::connect(
		qApp,
		&QApplication::applicationStateChanged,
		label,
		reloadOnActivation);

	Auth().api().reloadPasswordState();
	return std::move(has);
}

void SetupSelfDestruction(not_null<Ui::VerticalLayout*> container) {
	AddButton(
		container,
		lng_settings_self_destruct,
		st::settingsButton
	)->addClickHandler([] {
		Ui::show(Box<SelfDestructionBox>());
	});
}

void SetupSessionsList(not_null<Ui::VerticalLayout*> container) {
	AddButton(
		container,
		lng_settings_show_sessions,
		st::settingsButton
	)->addClickHandler([] {
		Ui::show(Box<SessionsBox>());
	});
}

void SetupSecurity(not_null<Ui::VerticalLayout*> container) {
	AddSkip(container);

	AddSubsectionTitle(container, lng_settings_security_title);

	auto passcodeWide = SetupLocalPasscode(container);
	auto separator1 = AddSeparator(container);
	auto passwordWide = SetupCloudPassword(container);
	auto separator2 = AddSeparator(container);
	separator1->toggleOn(rpl::combine(
		std::move(passcodeWide),
		base::duplicate(passwordWide)
	) | rpl::map([](bool one, bool second) {
		return one || second;
	}));
	separator2->toggleOn(std::move(passwordWide));
	SetupSelfDestruction(container);
	SetupSessionsList(container);

	AddSkip(container);
	AddDividerText(
		container,
		Lang::Viewer(lng_settings_sessions_about));
}

void SetupExport(not_null<Ui::VerticalLayout*> container) {
	AddSkip(container);

	AddButton(
		container,
		lng_settings_export_data,
		st::settingsButton
	)->addClickHandler([] {
		Ui::hideSettingsAndLayer();
		App::CallDelayed(
			st::boxDuration,
			&Auth(),
			[] { Auth().data().startExport(); });
	});

	AddSkip(container);
}

} // namespace

PrivacySecurity::PrivacySecurity(QWidget *parent, not_null<UserData*> self)
: Section(parent)
, _self(self) {
	setupContent();
}

void PrivacySecurity::setupContent() {
	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);

	SetupPrivacy(content);
	SetupSecurity(content);
	SetupExport(content);

	Ui::ResizeFitChild(this, content);
}

} // namespace Settings