#include <list>
#include <unistd.h>

#include <QPixmap>
#include <QWindow>
#include <QGuiApplication>
#include <QWidget>
#include <QColor>
#include <QDesktopServices>

#include <utils/ColorRgb.h>
#include <effectengine/EffectDefinition.h>
#include <webserver/WebServer.h>

#include "hyperiond.h"
#include "systray.h"

SysTray::SysTray(HyperionDaemon *hyperiond)
	: QWidget()
	, _colorDlg(this)
	, _hyperiond(hyperiond)
	, _hyperion(nullptr)
	, _instanceManager(HyperionIManager::getInstance())
	, _webPort(8090)
{
	Q_INIT_RESOURCE(resources);

	// webserver port
	WebServer* webserver = hyperiond->getWebServerInstance();
	connect(webserver, &WebServer::portChanged, this, &SysTray::webserverPortChanged);

	// instance changes
	connect(_instanceManager, &HyperionIManager::instanceStateChanged, this, &SysTray::handleInstanceStateChange);
}

SysTray::~SysTray()
{
}

void SysTray::iconActivated(QSystemTrayIcon::ActivationReason reason)
{
	switch (reason)
	{
		case QSystemTrayIcon::Trigger:
			break;
		case QSystemTrayIcon::DoubleClick:
			showColorDialog();
			break;
		case QSystemTrayIcon::MiddleClick:
			break;
		default: ;
	}
}

void SysTray::createTrayIcon()
{
	quitAction = new QAction(tr("&Quit"), this);
	QIcon quitIcon = QIcon::fromTheme("application-exit");
	quitAction->setIcon(quitIcon);
	connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

	colorAction = new QAction(tr("&Color"), this);
	QIcon colorIcon = QIcon::fromTheme("applications-graphics");
	colorAction->setIcon(colorIcon);
	connect(colorAction, SIGNAL(triggered()), this, SLOT(showColorDialog()));

	settingsAction = new QAction(tr("&Settings"), this);
	QIcon settingsIcon = QIcon::fromTheme("preferences-system");
	settingsAction->setIcon(settingsIcon);
	connect(settingsAction, SIGNAL(triggered()), this, SLOT(settings()));

	clearAction = new QAction(tr("&Clear"), this);
	QIcon clearIcon = QIcon::fromTheme("edit-delete");
	clearAction->setIcon(clearIcon);
	connect(clearAction, SIGNAL(triggered()), this, SLOT(clearEfxColor()));

	const std::list<EffectDefinition> efxs = _hyperion->getEffects();
	_trayIconMenu = new QMenu(this);
	_trayIconEfxMenu = new QMenu(_trayIconMenu);
	_trayIconEfxMenu->setTitle(tr("Effects"));
	QIcon efxIcon = QIcon::fromTheme("media-playback-start");
	_trayIconEfxMenu->setIcon(efxIcon);
	for (auto efx : efxs)
	{
		QAction *efxAction = new QAction(efx.name, this);
		connect(efxAction, SIGNAL(triggered()), this, SLOT(setEffect()));
		_trayIconEfxMenu->addAction(efxAction);
	}
	
	_trayIconMenu->addAction(settingsAction);
	_trayIconMenu->addSeparator();
	_trayIconMenu->addAction(colorAction);
	_trayIconMenu->addMenu(_trayIconEfxMenu);
	_trayIconMenu->addAction(clearAction);
	_trayIconMenu->addSeparator();
	_trayIconMenu->addAction(quitAction);

	_trayIcon = new QSystemTrayIcon(this);
	_trayIcon->setContextMenu(_trayIconMenu);
}

void SysTray::setColor(const QColor & color)
{
	std::vector<ColorRgb> rgbColor{ ColorRgb{ (uint8_t)color.red(), (uint8_t)color.green(), (uint8_t)color.blue() } };
 
 	_hyperion->setColor(1 ,rgbColor, 0);
}

void SysTray::showColorDialog()
{
	if(_colorDlg.isVisible())
	{
		_colorDlg.hide();
	}
	else
	{
		_colorDlg.show();
	}
}

void SysTray::closeEvent(QCloseEvent *event)
{
	event->ignore();
}

void SysTray::settings()
{
	// Hide error messages when opening webbrowser

	int out_pipe[2];
	int saved_stdout;
	int saved_stderr;

	// saving stdout and stderr file descriptor
	saved_stdout = ::dup( STDOUT_FILENO );
	saved_stderr = ::dup( STDERR_FILENO );

	if(::pipe(out_pipe) == 0)
	{
		// redirecting stdout to pipe
		::dup2(out_pipe[1], STDOUT_FILENO);
		::close(out_pipe[1]);
		// redirecting stderr to stdout
		::dup2(STDOUT_FILENO, STDERR_FILENO);
	}

	QDesktopServices::openUrl(QUrl("http://localhost:"+QString::number(_webPort)+"/", QUrl::TolerantMode));

	// restoring stdout
	::dup2(saved_stdout, STDOUT_FILENO);
	// restoring stderr
	::dup2(saved_stderr, STDERR_FILENO);
}

void SysTray::setEffect()
{
	QString efxName = qobject_cast<QAction*>(sender())->text();
	_hyperion->setEffect(efxName, 1);
}

void SysTray::clearEfxColor()
{
	_hyperion->clear(1);
}

void SysTray::handleInstanceStateChange(const instanceState& state, const quint8& instance, const QString& name)
{
	switch(state){
		case H_STARTED:
			if(instance == 0)
			{
				_hyperion = _instanceManager->getHyperionInstance(0);

				createTrayIcon();
				connect(_trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
					this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));

				connect(&_colorDlg, SIGNAL(currentColorChanged(const QColor&)), this, SLOT(setColor(const QColor &)));
				QIcon icon(":/hyperion-icon-32px.png");
				_trayIcon->setIcon(icon);
				_trayIcon->show();
				setWindowIcon(icon);
				_colorDlg.setOptions(QColorDialog::NoButtons);
			}

			break;
		default:
			break;
	}
}