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#ifndef PAPERREPLAY_H
#define PAPERREPLAY_H

#include <QtCore/QDir>
#include <QtCore/QHash>
#include <QtCore/QMap>
#include <QtCore/QVector>

#define PAPER_REPLAY "Paper Replay"

class PaperReplay : public QObject
{
	Q_OBJECT

	struct SessionData : public QSharedData {
		quint64 id;
		QString name;
		qint64 start, end;
		QVector<quint64> pages;
		QString file;
	};

public:
	explicit PaperReplay(QObject *parent = 0);

	class Session {
	public:
		Session();
		~Session();

		bool isValid() const;

		quint64 id() const;

		QString name() const;

		qint64 startTime() const;
		qint64 endTime() const;

		QVector<quint64> pages() const;

		QString fileName() const;

		static bool startTimeLess(const Session &a, const Session &b);

	private:
		Session(quint64 id);
		QSharedDataPointer<SessionData> d;

		friend class PaperReplay;
		friend class SessionList;
	};

	class SessionList {
	public:
		SessionList();

		QList<Session> sessionsDuringTime(qint64 time) const;

	private:
		explicit SessionList(const QMap<qint64, Session>& byTime);

		QMap<qint64, Session> _m;

		friend class PaperReplay;
	};

	bool open(const QString &path, quint64 notebookGuid = 0);
	void close();

	QList<Session> sessions() const;
	SessionList sessions(quint64 pageAddress) const;

private:
	static bool parseSessionInfo(SessionData *session, const QString &path);
	static bool parseSessionInfo(SessionData *session, QIODevice *dev);
	static bool parseSessionInfoV3(SessionData *session, QIODevice *dev);

	static bool parseSessionPages(SessionData *session, const QString &path);
	static bool parseSessionPages(SessionData *session, QIODevice *dev);
	static bool parseSessionPagesV1(SessionData *session, QIODevice *dev);

private:
	QDir _dir;
	QHash<quint64, Session> _sessions;
	QMap<quint64, QMap<qint64, Session> > _byPageTime;
};

#endif // PAPERREPLAY_H