/*
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_widget.h"

#include "ui/wrap/slide_wrap.h"
#include "ui/widgets/buttons.h"
#include "styles/style_settings.h"
#include "lang/lang_keys.h"
#include "application.h"
#include "auth_session.h"
#include "data/data_session.h"
#include "platform/platform_specific.h"
#include "core/update_checker.h"
#include "base/openssl_help.h"
#include "boxes/confirm_box.h"
#include "boxes/sessions_box.h"
#include "boxes/passcode_box.h"
#include "boxes/autolock_box.h"
#include "boxes/peer_list_box.h"
#include "boxes/edit_privacy_box.h"
#include "boxes/self_destruction_box.h"
#include "settings/settings_privacy_controllers.h"

namespace Settings {

LocalPasscodeState::LocalPasscodeState(QWidget *parent) : RpWidget(parent)
, _edit(this, GetEditPasscodeText(), st::boxLinkButton)
, _turnOff(this, lang(lng_passcode_turn_off), st::boxLinkButton) {
	updateControls();
	connect(_edit, SIGNAL(clicked()), this, SLOT(onEdit()));
	connect(_turnOff, SIGNAL(clicked()), this, SLOT(onTurnOff()));
	subscribe(Global::RefLocalPasscodeChanged(), [this]() { updateControls(); });
}

int LocalPasscodeState::resizeGetHeight(int newWidth) {
	_edit->moveToLeft(0, 0, newWidth);
	_turnOff->moveToRight(0, 0, newWidth);
	return _edit->height();
}

void LocalPasscodeState::onEdit() {
	Ui::show(Box<PasscodeBox>(false));
}

void LocalPasscodeState::onTurnOff() {
	Ui::show(Box<PasscodeBox>(true));
}

void LocalPasscodeState::updateControls() {
	_edit->setText(GetEditPasscodeText());
	_edit->moveToLeft(0, 0);
	_turnOff->setVisible(Global::LocalPasscode());
}

QString LocalPasscodeState::GetEditPasscodeText() {
	return lang(Global::LocalPasscode() ? lng_passcode_change : lng_passcode_turn_on);
}

CloudPasswordState::CloudPasswordState(QWidget *parent) : RpWidget(parent)
, _edit(this, lang(lng_cloud_password_set), st::boxLinkButton)
, _turnOff(this, lang(lng_passcode_turn_off), st::boxLinkButton) {
	_turnOff->hide();
	connect(_edit, SIGNAL(clicked()), this, SLOT(onEdit()));
	connect(_turnOff, SIGNAL(clicked()), this, SLOT(onTurnOff()));
	Sandbox::connect(SIGNAL(applicationStateChanged(Qt::ApplicationState)), this, SLOT(onReloadPassword(Qt::ApplicationState)));
	onReloadPassword();
}

int CloudPasswordState::resizeGetHeight(int newWidth) {
	_edit->moveToLeft(0, 0, newWidth);
	_turnOff->moveToRight(0, 0, newWidth);
	return _edit->height();
}

void CloudPasswordState::onEdit() {
	if (_unknownPasswordAlgo
		|| !_newPasswordAlgo
		|| !_newSecureSecretAlgo) {
		const 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;
	}
	auto box = Ui::show(Box<PasscodeBox>(
		_curPasswordRequest,
		_newPasswordAlgo,
		_hasPasswordRecovery,
		_notEmptyPassport,
		_curPasswordHint,
		_newSecureSecretAlgo));
	rpl::merge(
		box->newPasswordSet() | rpl::map([] { return rpl::empty_value(); }),
		box->passwordReloadNeeded()
	) | rpl::start_with_next([=] {
		onReloadPassword();
	}, box->lifetime());
}

void CloudPasswordState::onTurnOff() {
	if (_unknownPasswordAlgo
		|| !_newPasswordAlgo
		|| !_newSecureSecretAlgo) {
		const 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;
	}
	if (!_curPasswordRequest) {
		_turnOff->hide();

		MTP::send(
			MTPaccount_UpdatePasswordSettings(
				MTP_inputCheckPasswordEmpty(),
				MTP_account_passwordInputSettings(
					MTP_flags(
						MTPDaccount_passwordInputSettings::Flag::f_email),
					MTP_passwordKdfAlgoUnknown(), // new_algo
					MTP_bytes(QByteArray()), // new_password_hash
					MTP_string(QString()), // hint
					MTP_string(QString()), // email
					MTPSecureSecretSettings())),
			rpcDone(&CloudPasswordState::offPasswordDone),
			rpcFail(&CloudPasswordState::offPasswordFail));
	} else {
		auto box = Ui::show(Box<PasscodeBox>(
			_curPasswordRequest,
			_newPasswordAlgo,
			_hasPasswordRecovery,
			_notEmptyPassport,
			_curPasswordHint,
			_newSecureSecretAlgo,
			true));
		rpl::merge(
			box->newPasswordSet(
			) | rpl::map([] { return rpl::empty_value(); }),
			box->passwordReloadNeeded()
		) | rpl::start_with_next([=] {
			onReloadPassword();
		}, box->lifetime());
	}
}

void CloudPasswordState::onReloadPassword() {
	if (_reloadRequestId) {
		return;
	}
	_reloadRequestId = MTP::send(MTPaccount_GetPassword(), rpcDone(&CloudPasswordState::getPasswordDone), rpcFail(&CloudPasswordState::getPasswordFail));
}

void CloudPasswordState::onReloadPassword(Qt::ApplicationState state) {
	if (!_waitingConfirm.isEmpty() && state == Qt::ApplicationActive) {
		onReloadPassword();
	}
}

void CloudPasswordState::getPasswordDone(const MTPaccount_Password &result) {
	Expects(result.type() == mtpc_account_password);

	_reloadRequestId = 0;
	_waitingConfirm = QString();

	const auto &d = result.c_account_password();
	_curPasswordRequest = Core::ParseCloudPasswordCheckRequest(d);
	_unknownPasswordAlgo = d.has_current_algo() && !_curPasswordRequest;
	_hasPasswordRecovery = d.is_has_recovery();
	_notEmptyPassport = d.is_has_secure_values();
	_curPasswordHint = qs(d.vhint);
	_newPasswordAlgo = Core::ValidateNewCloudPasswordAlgo(
		Core::ParseCloudPasswordAlgo(d.vnew_algo));
	_newSecureSecretAlgo = Core::ValidateNewSecureSecretAlgo(
		Core::ParseSecureSecretAlgo(d.vnew_secure_algo));
	const auto pattern = d.has_email_unconfirmed_pattern()
		? qs(d.vemail_unconfirmed_pattern)
		: QString();
	if (!pattern.isEmpty()) {
		_waitingConfirm = lng_cloud_password_waiting(lt_email, pattern);
	}
	openssl::AddRandomSeed(bytes::make_span(d.vsecure_random.v));

	_edit->setText(lang(hasCloudPassword()
		? lng_cloud_password_edit
		: lng_cloud_password_set));
	_edit->setVisible(_waitingConfirm.isEmpty());
	_turnOff->setVisible(!_waitingConfirm.isEmpty() || hasCloudPassword());
	update();
}

bool CloudPasswordState::hasCloudPassword() const {
	return (_curPasswordRequest || _unknownPasswordAlgo);
}

bool CloudPasswordState::getPasswordFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) {
		return false;
	}
	_reloadRequestId = 0;
	return true;
}

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

	auto text = st::boxTextFont->elided(_waitingConfirm, width() - _turnOff->width() - st::boxTextFont->spacew);
	if (!text.isEmpty()) {
		p.setPen(st::windowFg);
		p.setFont(st::boxTextFont);
		p.drawTextLeft(0, 0, width(), text);
	}
}

void CloudPasswordState::offPasswordDone(const MTPBool &result) {
	onReloadPassword();
}

bool CloudPasswordState::offPasswordFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	onReloadPassword();
	return true;
}

PrivacyWidget::PrivacyWidget(QWidget *parent, UserData *self) : BlockWidget(parent, self, lang(lng_settings_section_privacy)) {
	createControls();
	subscribe(Global::RefLocalPasscodeChanged(), [this]() { autoLockUpdated(); });
}

QString PrivacyWidget::GetAutoLockText() {
	return (Global::AutoLock() % 3600) ? lng_passcode_autolock_minutes(lt_count, Global::AutoLock() / 60) : lng_passcode_autolock_hours(lt_count, Global::AutoLock() / 3600);
}

void PrivacyWidget::createControls() {
	style::margins marginSmall(0, 0, 0, st::settingsSmallSkip);
	style::margins marginSkip(0, 0, 0, st::settingsSkip);
	style::margins slidedPadding(0, marginSmall.bottom() / 2, 0, marginSmall.bottom() - (marginSmall.bottom() / 2));

	createChildRow(_blockedUsers, marginSmall, lang(lng_settings_blocked_users), SLOT(onBlockedUsers()));
	createChildRow(_lastSeenPrivacy, marginSmall, lang(lng_settings_last_seen_privacy), SLOT(onLastSeenPrivacy()));
	createChildRow(_callsPrivacy, marginSmall, lang(lng_settings_calls_privacy), SLOT(onCallsPrivacy()));
	createChildRow(_groupsInvitePrivacy, marginSmall, lang(lng_settings_groups_invite_privacy), SLOT(onGroupsInvitePrivacy()));
	createChildRow(_localPasscodeState, marginSmall);
	auto label = lang(psIdleSupported() ? lng_passcode_autolock_away : lng_passcode_autolock_inactive);
	auto value = GetAutoLockText();
	createChildRow(_autoLock, marginSmall, slidedPadding, label, value, LabeledLink::Type::Primary, SLOT(onAutoLock()));
	if (!Global::LocalPasscode()) {
		_autoLock->hide(anim::type::instant);
	}
	createChildRow(_cloudPasswordState, marginSmall);
	createChildRow(_selfDestruction, marginSmall, lang(lng_settings_self_destruct), SLOT(onSelfDestruction()));
	createChildRow(_showAllSessions, marginSmall, lang(lng_settings_show_sessions), SLOT(onShowSessions()));
	createChildRow(_exportData, marginSmall, lang(lng_settings_export_data), SLOT(onExportData()));
}

void PrivacyWidget::autoLockUpdated() {
	if (Global::LocalPasscode()) {
		auto value = GetAutoLockText();
		_autoLock->entity()->link()->setText(value);
		resizeToWidth(width());
	}
	_autoLock->toggle(
		Global::LocalPasscode(),
		anim::type::normal);
}

void PrivacyWidget::onBlockedUsers() {
	Ui::show(Box<PeerListBox>(std::make_unique<BlockedBoxController>(), [](not_null<PeerListBox*> box) {
		box->addButton(langFactory(lng_close), [box] { box->closeBox(); });
		box->addLeftButton(langFactory(lng_blocked_list_add), [=] { BlockedBoxController::BlockNewUser(); });
	}));
}

void PrivacyWidget::onLastSeenPrivacy() {
	Ui::show(Box<EditPrivacyBox>(std::make_unique<LastSeenPrivacyController>()));
}

void PrivacyWidget::onCallsPrivacy() {
	Ui::show(Box<EditPrivacyBox>(std::make_unique<CallsPrivacyController>()));
}

void PrivacyWidget::onGroupsInvitePrivacy() {
	Ui::show(Box<EditPrivacyBox>(std::make_unique<GroupsInvitePrivacyController>()));
}

void PrivacyWidget::onAutoLock() {
	Ui::show(Box<AutoLockBox>());
}

void PrivacyWidget::onShowSessions() {
	Ui::show(Box<SessionsBox>());
}

void PrivacyWidget::onSelfDestruction() {
	Ui::show(Box<SelfDestructionBox>());
}

void PrivacyWidget::onExportData() {
	Ui::hideSettingsAndLayer();
	App::CallDelayed(
		st::boxDuration,
		&Auth(),
		[] { Auth().data().startExport(); });
}

} // namespace Settings