/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "settings/settings_widget.h"

#include "settings/settings_inner_widget.h"
#include "settings/settings_fixed_bar.h"
#include "styles/style_settings.h"
#include "ui/scrollarea.h"
#include "mainwindow.h"
#include "mainwidget.h"
#include "localstorage.h"
#include "boxes/confirmbox.h"
#include "application.h"

namespace Settings {
namespace {

QString SecretText;
QMap<QString, base::lambda_wrap<void()>> Codes;

void fillCodes() {
	Codes.insert(qsl("debugmode"), []() {
		QString text = cDebug() ? qsl("Do you want to disable DEBUG logs?") : qsl("Do you want to enable DEBUG logs?\n\nAll network events will be logged.");
		ConfirmBox *box = new ConfirmBox(text);
		box->connect(box, SIGNAL(confirmed()), App::app(), SLOT(onSwitchDebugMode()));
		Ui::showLayer(box);
	});
	Codes.insert(qsl("testmode"), []() {
		QString text = cTestMode() ? qsl("Do you want to disable TEST mode?") : qsl("Do you want to enable TEST mode?\n\nYou will be switched to test cloud.");
		ConfirmBox *box = new ConfirmBox(text);
		box->connect(box, SIGNAL(confirmed()), App::app(), SLOT(onSwitchTestMode()));
		Ui::showLayer(box);
	});
	Codes.insert(qsl("loadlang"), []() {
		Global::RefChooseCustomLang().notify();
	});
	Codes.insert(qsl("debugfiles"), []() {
		if (!cDebug()) return;
		if (DebugLogging::FileLoader()) {
			Global::RefDebugLoggingFlags() &= ~DebugLogging::FileLoaderFlag;
		} else {
			Global::RefDebugLoggingFlags() |= DebugLogging::FileLoaderFlag;
		}
		Ui::showLayer(new InformBox(DebugLogging::FileLoader() ? qsl("Enabled file download logging") : qsl("Disabled file download logging")));
	});
	Codes.insert(qsl("crashplease"), []() {
		t_assert(!"Crashed in Settings!");
	});
	Codes.insert(qsl("workmode"), []() {
		auto text = Global::DialogsModeEnabled() ? qsl("Disable work mode?") : qsl("Enable work mode?");
		auto box = std_::make_unique<ConfirmBox>(text);
		box->connect(box.get(), SIGNAL(confirmed()), App::app(), SLOT(onSwitchWorkMode()));
		Ui::showLayer(box.release());
	});
	Codes.insert(qsl("moderate"), []() {
		auto text = Global::ModerateModeEnabled() ? qsl("Disable moderate mode?") : qsl("Enable moderate mode?");
		auto box = std_::make_unique<ConfirmBox>(text);
		box->setConfirmedCallback([]() {
			Global::SetModerateModeEnabled(!Global::ModerateModeEnabled());
			Local::writeUserSettings();
			Ui::hideLayer();
		});
		Ui::showLayer(box.release());
	});
	Codes.insert(qsl("getdifference"), []() {
		if (auto main = App::main()) {
			main->getDifference();
		}
	});
}

void codesFeedString(const QString &text) {
	if (Codes.isEmpty()) fillCodes();

	SecretText += text.toLower();
	int size = SecretText.size(), from = 0;
	while (size > from) {
		auto piece = SecretText.midRef(from);
		auto found = false;
		for (auto i = Codes.cbegin(), e = Codes.cend(); i != e; ++i) {
			if (piece == i.key()) {
				(*i)();
				from = size;
				found = true;
				break;
			}
		}
		if (found) break;

		for (auto i = Codes.cbegin(), e = Codes.cend(); i != e; ++i) {
			if (i.key().startsWith(piece)) {
				found = true;
				break;
			}
		}
		if (found) break;

		++from;
	}
	SecretText = (size > from) ? SecretText.mid(from) : QString();
}

} // namespace

Widget::Widget() : LayerWidget()
, _scroll(this, st::setScroll)
, _inner(this)
, _fixedBar(this)
, _fixedBarShadow1(this, st::settingsFixedBarShadowBg1)
, _fixedBarShadow2(this, st::settingsFixedBarShadowBg2) {
	_scroll->setOwnedWidget(_inner);
	setAttribute(Qt::WA_OpaquePaintEvent);

	_fixedBar->move(0, 0);
	_fixedBarShadow1->move(0, _fixedBar->y() + st::settingsFixedBarHeight);
	_fixedBarShadow2->move(0, _fixedBarShadow1->y() + st::lineWidth);
	_scroll->move(0, st::settingsFixedBarHeight);

	connect(_inner, SIGNAL(heightUpdated()), this, SLOT(onInnerHeightUpdated()));
}

void Widget::parentResized() {
	int windowWidth = App::wnd()->width();
	int newWidth = st::settingsMaxWidth;
	int newContentLeft = st::settingsMaxPadding;
	if (windowWidth <= st::settingsMaxWidth) {
		newWidth = windowWidth;
		newContentLeft = st::settingsMinPadding;
		if (windowWidth > st::wndMinWidth) {
			// Width changes from st::wndMinWidth to st::settingsMaxWidth.
			// Padding changes from st::settingsMinPadding to st::settingsMaxPadding.
			newContentLeft += ((newWidth - st::wndMinWidth) * (st::settingsMaxPadding - st::settingsMinPadding)) / (st::settingsMaxWidth - st::wndMinWidth);
		}
	} else if (windowWidth < st::settingsMaxWidth + 2 * st::settingsMargin) {
		newWidth = windowWidth - 2 * st::settingsMargin;
		newContentLeft = st::settingsMinPadding;
		if (windowWidth > st::wndMinWidth) {
			// Width changes from st::wndMinWidth to st::settingsMaxWidth.
			// Padding changes from st::settingsMinPadding to st::settingsMaxPadding.
			newContentLeft += ((newWidth - st::wndMinWidth) * (st::settingsMaxPadding - st::settingsMinPadding)) / (st::settingsMaxWidth - st::wndMinWidth);
		}
	}

	// Widget height depends on InnerWidget height, so we
	// resize it here, not in the resizeEvent() handler.
	_inner->resizeToWidth(newWidth, newContentLeft);

	resizeUsingInnerHeight(newWidth, newContentLeft);
}

void Widget::onInnerHeightUpdated() {
	resizeUsingInnerHeight(width(), _contentLeft);
}

void Widget::resizeUsingInnerHeight(int newWidth, int newContentLeft) {
	if (!App::wnd()) return;

	int windowWidth = App::wnd()->width();
	int windowHeight = App::wnd()->height();
	int maxHeight = st::settingsFixedBarHeight + _inner->height();
	int newHeight = maxHeight;
	if (newHeight > windowHeight || newWidth >= windowWidth) {
		newHeight = windowHeight;
	}

	if (_contentLeft != newContentLeft) {
		_contentLeft = newContentLeft;
	}

	setGeometry((App::wnd()->width() - newWidth) / 2, (App::wnd()->height() - newHeight) / 2, newWidth, newHeight);
	update();
}

void Widget::showDone() {
	_inner->showFinished();
}

void Widget::paintEvent(QPaintEvent *e) {
	Painter p(this);
	p.fillRect(rect(), st::windowBg);
}

void Widget::resizeEvent(QResizeEvent *e) {
	if (!width() || !height()) {
		return;
	}

	_fixedBar->resizeToWidth(width());
	_fixedBarShadow1->resize(width(), st::lineWidth);
	_fixedBarShadow2->resize(width(), st::lineWidth);

	QSize scrollSize(width(), height() - _fixedBar->height());
	if (_scroll->size() != scrollSize) {
		_scroll->resize(scrollSize);
	}

	if (!_scroll->isHidden()) {
		int scrollTop = _scroll->scrollTop();
		_inner->setVisibleTopBottom(scrollTop, scrollTop + _scroll->height());
	}
}

void Widget::keyPressEvent(QKeyEvent *e) {
	codesFeedString(e->text());
	return LayerWidget::keyPressEvent(e);
}

} // namespace Settings