/*
 * RemoteAccessFeaturePlugin.h - declaration of RemoteAccessFeaturePlugin class
 *
 * Copyright (c) 2017-2024 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.
 *
 */

#pragma once

#include "Computer.h"
#include "FeatureProviderInterface.h"
#include "CommandLinePluginInterface.h"

class VncView;

class RemoteAccessFeaturePlugin : public QObject, CommandLinePluginInterface, FeatureProviderInterface, PluginInterface
{
	Q_OBJECT
	Q_PLUGIN_METADATA(IID "io.veyon.Veyon.Plugins.RemoteAccess")
	Q_INTERFACES(PluginInterface FeatureProviderInterface CommandLinePluginInterface)
public:
	enum class Argument
	{
		HostName,
		ClipboardText,
		ClipboardImage
	};
	Q_ENUM(Argument)

	explicit RemoteAccessFeaturePlugin( QObject* parent = nullptr );
	~RemoteAccessFeaturePlugin() override = default;

	Plugin::Uid uid() const override
	{
		return Plugin::Uid{ QStringLiteral("387a0c43-1355-4ff6-9e1f-d098e9ce5127") };
	}

	QVersionNumber version() const override
	{
		return QVersionNumber( 1, 1 );
	}

	QString name() const override
	{
		return QStringLiteral("RemoteAccess");
	}

	QString description() const override
	{
		return tr( "Remote view or control a computer" );
	}

	QString vendor() const override
	{
		return QStringLiteral("Veyon Community");
	}

	QString copyright() const override
	{
		return QStringLiteral("Tobias Junghans");
	}

	const FeatureList& featureList() const override;

	bool controlFeature( Feature::Uid featureUid, Operation operation, const QVariantMap& arguments,
						const ComputerControlInterfaceList& computerControlInterfaces ) override;

	bool startFeature( VeyonMasterInterface& master, const Feature& feature,
					   const ComputerControlInterfaceList& computerControlInterfaces ) override;

	bool handleFeatureMessage(ComputerControlInterface::Pointer computerControlInterface,
							  const FeatureMessage& message) override;

	bool handleFeatureMessage(VeyonServerInterface& server,
							  const MessageContext& messageContext,
							  const FeatureMessage& message) override;

	bool handleFeatureMessage(VeyonWorkerInterface& worker, const FeatureMessage& message) override;

	void sendAsyncFeatureMessages(VeyonServerInterface& server, const MessageContext& messageContext) override;

	QString commandLineModuleName() const override
	{
		return QStringLiteral( "remoteaccess" );
	}

	QString commandLineModuleHelp() const override
	{
		return description();
	}

	QStringList commands() const override;

	QString commandHelp( const QString& command ) const override;

private Q_SLOTS:
	CommandLinePluginInterface::RunResult handle_view( const QStringList& arguments );
	CommandLinePluginInterface::RunResult handle_control( const QStringList& arguments );
	CommandLinePluginInterface::RunResult handle_help( const QStringList& arguments );

private:
	static const char* clipboardDataVersionProperty()
	{
		return "clipboardDataVersion";
	}

	static const char* clipboardImageFormat()
	{
		return "PNG";
	}

	bool remoteViewEnabled() const;
	bool remoteControlEnabled() const;
	bool initAuthentication();
	bool remoteAccess( const QString& hostAddress, bool viewOnly );
	void createRemoteAccessWindow(const ComputerControlInterface::Pointer& computerControlInterface, bool viewOnly,
								  VeyonMasterInterface* master);

	void storeClipboardData(FeatureMessage* message, const QString& text, const QImage& image);
	void loadClipboardData(const FeatureMessage& message);
	void sendClipboardData(ComputerControlInterface::Pointer computerControlInterface);

	void updateClipboardData();

	const Feature m_remoteViewFeature;
	const Feature m_remoteControlFeature;
	const Feature m_clipboardExchangeFeature;
	const FeatureList m_features;

	QMap<QString, QString> m_commands;

	bool m_clipboardSynchronizationDisabled;
	QMutex m_clipboardDataMutex;
	int m_clipboardDataVersion{0};
	QString m_clipboardText;
	QImage m_clipboardImage;

	QList<QPair<QPointer<QObject>, VncView *> > m_vncViews{};

};
