#ifndef GTL_HW_PLAYER_FILE_H
#define GTL_HW_PLAYER_FILE_H

#include <QObject>
#include <QFile>
#include <QFileInfo>
#include <QDir>
#include <QDataStream>
#include <QMutex>
#include <QStringList>
#include <QDomElement>
#include <QJsonObject>

#include "hw_global.h"

namespace gtl
{
    namespace hw
    {
        class HW_EXPORT player_file : public QObject
        {
            Q_OBJECT

        public:
            player_file(QObject *parent, QString path);
            ~player_file();

            bool is_ok() const { return _is_ok; }
            int channels() const { return _channels; }
            qreal rate() const { return _rate; }
            qreal dt() const { return _rate == 0 ? 0 : 1.0/_rate; }
            qreal time() const { return _time; }
            QString info() const { return _info; }
            int samples() const { return qRound(_time*_rate); }
            QString channel(int idx) const;
            QString unit(int idx) const;
            int color(int idx) const;
            QJsonObject channel_info(int idx) const;

            qreal reference(int idx) const;
            qreal sensitivity(int idx) const;
            qreal gain(int idx) const;
            qreal offset(int idx) const;

            QString device() const;
            virtual QString comment() const;

            const QJsonObject& data() const;


            virtual bool get_data(qreal *data, int &samples, bool is_cyclic, bool &is_continued) = 0;
            virtual bool get_data(qreal *data, int& idx, int &samples, bool is_cyclic = false) = 0;

            void seek_to_start();
            QString path() const { return _path; }

            void get_ranges_indices(std::back_insert_iterator<std::vector<std::pair<int, int>>> ranges) const;
            void set_ranges(std::vector<std::pair<qreal, qreal>>::iterator begin, std::vector<std::pair<qreal, qreal>>::iterator end);
            void get_ranges(std::back_insert_iterator<std::vector<std::pair<qreal, qreal>>> out) const;


        protected:
            QString _path;
            QFile* _file;
            QDataStream* _stream;

            bool _is_ok;

            qreal _rate;
            qreal _time;
            int _channels;

            QString _info;

            quint64 _pos_data;
            QMutex _mutex;

            QJsonObject _data;

        private:
            QJsonObject get_root(int idx) const;



        private:


        };
    }
}

#endif // GTL_HW_PLAYER_FILE_H