#ifndef SMARTPEN_H
#define SMARTPEN_H

#include <QtCore/QObject>
#include <QtCore/QDateTime>
#include <QtCore/QVariantMap>
#include <openobex/obex.h>

// TODO: These values are mostly random.
#define SMARTPEN_DPI_X (800.0)
#define SMARTPEN_DPI_Y (800.0)

#define SMARTPEN_BLEED_X 333.3
#define SMARTPEN_BLEED_Y 333.3

class Smartpen : public QObject
{
	Q_OBJECT

public:
	explicit Smartpen(QObject *parent = 0);
	~Smartpen();

	typedef QPair<unsigned int, unsigned int> Address;

	bool isConnected() const;

	enum Parameters {
		PenName = 8011
	};

	QByteArray getObject(const QString& name);
	QString getParameter(Parameters parameter);

	QString getPenName();
	QVariantMap getPenInfo();

	struct ChangeReport {
		QString guid;
		QString className;
		QString title;
	};

	QList<ChangeReport> getChangeList(const QDateTime &from = QDateTime());

	QByteArray getLspData(const QString &name, const QDateTime &from = QDateTime());
	QByteArray getPaperReplay(const QDateTime &from = QDateTime());

	static qint64 toPenTime(const QDateTime &dt);
	static QDateTime fromPenTime(qint64 t);

	static QString toPenSerial(quint64 id);
	static quint64 toPenId(const QString &serial);

public slots:
	bool connectToPen(const Address &addr);
	void disconnectFromPen();

signals:
	void error();

private:
	static void obexEventCb(obex_t *handle, obex_object_t *obj,
	                            int mode, int event, int obex_cmd, int obex_rsp);
	void handleObexEvent(obex_object_t *object,
	                     int event, int obex_cmd, int obex_rsp);
	void handleObexRequestDone(obex_object_t *object, int obex_cmd, int obex_rsp);

	static QString toPenSerialSegment(quint32 id, int len);
	static quint32 fromPenSerialSegment(const QString &s);

	static QByteArray encodeUtf16(const QString &s);
	void addConnHeader(obex_object_t *object) const;

private:
	obex_t * _obex;
	quint32 _connId;
	QByteArray _inBuf;
};

#endif // SMARTPEN_H