/*
 * ServiceControl.cpp - class for controlling veyon service
 *
 * Copyright (c) 2017-2019 Tobias Junghans <tobydox@veyon.io>
 *
 * This file is part of Veyon - https://veyon.io
 *
 * This program 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 2 of the License, or (at your option) any later version.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

#include <QCoreApplication>
#include <QProgressBar>
#include <QProgressDialog>
#include <QtConcurrent>

#include "PlatformServiceFunctions.h"
#include "ServiceControl.h"


ServiceControl::ServiceControl( const QString& name,
								const QString& filePath,
								const QString& displayName,
								QWidget* parent ) :
	QObject( parent ),
	m_name( name ),
	m_filePath( filePath ),
	m_displayName( displayName ),
	m_parent( parent )
{
}



bool ServiceControl::isServiceRegistered()
{
	return VeyonCore::platform().serviceFunctions().isRegistered( m_name );
}



bool ServiceControl::isServiceRunning()
{
	return VeyonCore::platform().serviceFunctions().isRunning( m_name );
}



void ServiceControl::startService()
{
	serviceControl( tr( "Starting service %1" ).arg( m_name ),
					QtConcurrent::run( [=]() { VeyonCore::platform().serviceFunctions().start( m_name ); } ) );
}




void ServiceControl::stopService()
{
	serviceControl( tr( "Stopping service %1" ).arg( m_name ),
					QtConcurrent::run( [=]() { VeyonCore::platform().serviceFunctions().stop( m_name ); } ) );
}



void ServiceControl::registerService()
{
	serviceControl( tr( "Registering service %1" ).arg( m_name ),
					QtConcurrent::run( [=]() { VeyonCore::platform().serviceFunctions().install( m_name,
																								 m_filePath,
																								 PlatformServiceFunctions::StartMode::Auto,
																								 m_displayName ); } ) );
}



void ServiceControl::unregisterService()
{
	serviceControl( tr( "Unregistering service %1" ).arg( m_name ),
					QtConcurrent::run( [=]() { VeyonCore::platform().serviceFunctions().uninstall( m_name ); } ) );

}



void ServiceControl::serviceControl( const QString& title, const Operation& operation )
{
	if( m_parent )
	{
		graphicalFeedback( title, operation );
	}
	else
	{
		textFeedback( title, operation );
	}
}



void ServiceControl::graphicalFeedback( const QString& title, const Operation& operation )
{
	QProgressDialog pd( title, {}, 0, 0, m_parent );
	pd.setWindowTitle( tr( "Service control" ) );

	auto b = new QProgressBar( &pd );
	b->setMaximum( 100 );
	b->setTextVisible( false );
	pd.setBar( b );
	b->show();
	pd.setWindowModality( Qt::WindowModal );
	pd.show();

	int j = 0;
	while( operation.isFinished() == false )
	{
		QCoreApplication::processEvents();
		b->setValue( ++j % 100 );
		QThread::msleep( 10 );
	}
}



void ServiceControl::textFeedback( const QString& title, const Operation& operation )
{
	printf( "%s", qUtf8Printable( title ) );

	while( operation.isFinished() == false )
	{
		QCoreApplication::processEvents();
		QThread::msleep( 200 );
		printf( "." );
	}
}
