#ifndef _MAINWINDOW_H_
#define _MAINWINDOW_H_

#include <QtWidgets>
#include <QMainWindow>
#include "../net/client.h"

class SessionNameWindow;
class ConnectionFrame;
class ListenServer;
class DiscoveryListener;
class HelpWindow;
class ReloadRoomWindow;

namespace Ui
{
class MainWindow;
}

/**
 * Initializing MainWindow.
 * Handle ButtonEvents and initialize ListenServer.
 */
class MainWindow : public QMainWindow
{
	Q_OBJECT

public:

	MainWindow(QWidget *parent = 0);
	~MainWindow();

	QRect calcFrameGeometry(ConnectionFrame* frame) const;

private:

	// Ui stuff
	Ui::MainWindow    *ui;
	SessionNameWindow *_sessionNameWindow;
	HelpWindow        *_helpWindow;
	ReloadRoomWindow	*_reloadWindow;
	QLabel            *_sessionNameLabel;
	int               _tbIconSize;
	Qt::ToolBarArea   _tbArea;
	int  _tilesX;
	int  _tilesY;
	QImage* _backgroundImage = nullptr;
	QLabel* _examModeLabel = nullptr;


	/* virtual columns to preserve the aspect ratio of the loaded room */
	int _virtCols;
	int _virtRows;

	// Button block stuff
	QTimer              *_buttonLockTimer;
	QList<QAction*>     _lockingButtons;
        static const qint64 BUTTON_BLOCK_TIME = 2000;

	// Management stuff
	enum class Mode
	{
	    Broadcast,
	    Multicast,
	    Unicast,
	    LockedUnicast,
	    None
	} _mode;
	int _streamingSource;

	QList<ConnectionFrame*> _clientFrames;
        QWidget *_dropMarker;
	ListenServer            *_listenServer;
	DiscoveryListener       *_discoveryListener;

	int _lastClientCount;

        QPoint closestFreeSlot(const QPoint preferredPixels, const ConnectionFrame* toIgnore);
	void placeFrameInFreeSlot(ConnectionFrame* frame, QPoint preferred = QPoint(-1, -1));
	ConnectionFrame* createFrame(const QString &computerId = QString(), const QPoint *gridPosition = nullptr, bool fromRoomplan = false);
	void savePosition(ConnectionFrame *cf);
	void startVncServerIfNecessary(int from);
	void tellClientCurrentSituation(Client* client);
	void reset(bool lock = false);
	Client* getClientFromId(int id);
	ConnectionFrame* getTutorFrame();
	ConnectionFrame* getSelectedFrame();

	void closeEvent(QCloseEvent *e);
	void changeEvent(QEvent *e);
	void resizeEvent(QResizeEvent *e);
	void mouseReleaseEvent(QMouseEvent* e);

	int getTileWidthPx() const;
	int getTileHeightPx() const;

        void updateContextButtonStates();

	void reloadCurrentRoom();

        void vncOneOnOne(bool exclusive);

protected slots:
	void disableButtons();
	void enableButtons();
	void clientCountChanged();

	void onSessionNameClick();
	void onSessionNameUpdate();

	void onDeleteClient();

	void onButtonLock(bool checked);
	void onButtonLockSingle();
	void onButtonStudentToTutor();
	void onButtonStudentToTutorExclusive();
	void onButtonTutorToAll();
	void onButtonTutorToStudent();
	void onButtonStopProjection();

	void onButtonSetAsTutor();
	void onButtonReloadRoomConfig();
	void onReloadRoomOk();
	void onReloadRoomCancel();

	void onButtonExit();
	void onButtonHelp();
	// connection frame
        void onFrameMoving(ConnectionFrame* frame);
        void onFrameDropped(ConnectionFrame* frame);
	void onFrameClicked(ConnectionFrame* frame);
	// Net
	void onClientConnected(Client* client);
	void onClientAuthenticating(Client* client, ClientLogin* request);
	void onClientAuthenticated(Client* client);
	void onVncServerStateChange(Client* client);
	void onVncClientStateChange(Client* client);

};
#endif