/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99:
 *
 * SleepLib Somnopose Loader Implementation
 *
 * Copyright (c) 2011-2014 Mark Watkins <jedimark@users.sourceforge.net>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file COPYING in the main directory of the Linux
 * distribution for more details. */

//********************************************************************************************
// IMPORTANT!!!
//********************************************************************************************
// Please INCREMENT the somnopose_data_version in somnopose_loader.h when making changes to this loader
// that change loader behaviour or modify channels.
//********************************************************************************************

#include <QDir>
#include <QTextStream>
#include "somnopose_loader.h"
#include "SleepLib/machine.h"

SomnoposeLoader::SomnoposeLoader()
{
    //ctor
}

SomnoposeLoader::~SomnoposeLoader()
{
    //dtor
}
int SomnoposeLoader::Open(QString & path,Profile *profile)
{
    Q_UNUSED(path)
    Q_UNUSED(profile)

    QString newpath;

    QString dirtag="somnopose";

    // Could Scan the ZEO folder for a list of CSVs

    path=path.replace("\\","/");

    if (path.toLower().endsWith("/"+dirtag)) {
        return 0;
        //newpath=path;
    } else {
        newpath=path+"/"+dirtag.toUpper();
    }

    //QString filename;

    // Somnopose folder structure detection stuff here.

    return 0; // number of machines affected
}
Machine *SomnoposeLoader::CreateMachine(Profile *profile)
{
    if (!profile)
        return NULL;

    QList<Machine *> ml=profile->GetMachines(MT_POSITION);

    for (QList<Machine *>::iterator i=ml.begin(); i!=ml.end(); i++) {
        if ((*i)->GetClass()==somnopose_class_name)  {
            return (*i);
            break;
        }
    }

    qDebug("Create Somnopose Machine Record");

    Machine *m=new PositionSensor(profile,0);
    m->SetType(MT_POSITION);
    m->SetClass(somnopose_class_name);
    m->properties[STR_PROP_Brand]="Somnopose";
    m->properties[STR_PROP_Model]="Somnopose Position Data";
    m->properties[STR_PROP_DataVersion]=QString::number(somnopose_data_version);

    profile->AddMachine(m);

    QString path="{"+STR_GEN_DataFolder+"}/"+m->GetClass()+"_"+m->hexid()+"/";
    m->properties[STR_PROP_Path]=path;
    m->properties[STR_PROP_BackupPath]=path+"Backup/";

    return m;
}

int SomnoposeLoader::OpenFile(QString filename)
{
    QFile file(filename);
    if (filename.toLower().endsWith(".csv")) {
        if (!file.open(QFile::ReadOnly)) {
            qDebug() << "Couldn't open Somnopose data file" << filename;
            return 0;
        }
    } else {
        return 0;
    }

    qDebug() << "Opening file" << filename;
    QTextStream ts(&file);

    // Read header line and determine order of fields
    QString hdr=ts.readLine();
    QStringList headers=hdr.split(",");

    int col_inclination=-1, col_orientation=-1, col_timestamp=-1;

    int hdr_size=headers.size();
    for (int i=0;i<hdr_size;i++) {
        if (headers.at(i).compare("timestamp",Qt::CaseInsensitive)==0)
            col_timestamp=i;
        if (headers.at(i).compare("inclination",Qt::CaseInsensitive)==0)
            col_inclination=i;
        if (headers.at(i).compare("orientation",Qt::CaseInsensitive)==0)
            col_orientation=i;
    }

    // Check we have all fields available
    if ((col_timestamp<0) || (col_inclination<0) || (col_orientation<0)) {
        return 0;
    }

    QDateTime epoch(QDate(2001,1,1),QTime(0,0,0));
    qint64 ep=qint64(epoch.toTime_t())*1000,time;

    double timestamp,orientation, inclination;
    QString data;
    QStringList fields;
    bool ok;

    bool first=true;
    Machine *mach=CreateMachine(p_profile);
    Session *sess=NULL;
    SessionID sid;

    EventList *ev_orientation=NULL, *ev_inclination=NULL;

    while (!(data=ts.readLine()).isEmpty()) {
        fields=data.split(",");

        if (fields.size() < hdr_size)  // missing fields.. skip this record
            continue;

        timestamp=fields[col_timestamp].toDouble(&ok);
        if (!ok) continue;
        orientation=fields[col_orientation].toDouble(&ok);
        if (!ok) continue;
        inclination=fields[col_inclination].toDouble(&ok);
        if (!ok) continue;

        // convert to milliseconds since epoch
        time=(timestamp*1000.0)+ep;

        if (first) {
            sid=time/1000;
            if (mach->SessionExists(sid)) {
                return 0; // Already imported
            }
            sess=new Session(mach,sid);
            sess->really_set_first(time);
            ev_orientation=sess->AddEventList(POS_Orientation,EVL_Event,1,0,0,0);
            ev_inclination=sess->AddEventList(POS_Inclination,EVL_Event,1,0,0,0);
            first=false;
        }
        sess->set_last(time);
        ev_orientation->AddEvent(time,orientation);
        ev_inclination->AddEvent(time,inclination);

      //  QDateTime dt=QDateTime::fromMSecsSinceEpoch(time);
      //  qDebug() << dt << orientation << inclination;
    }
    sess->setMin(POS_Orientation,ev_orientation->Min());
    sess->setMax(POS_Orientation,ev_orientation->Max());
    sess->setMin(POS_Inclination,ev_inclination->Min());
    sess->setMax(POS_Inclination,ev_inclination->Max());

    sess->really_set_last(time);
    sess->SetChanged(true);
    mach->AddSession(sess, p_profile);

    mach->Save();

    return true;
}


static bool somnopose_initialized=false;

void SomnoposeLoader::Register()
{
    if (somnopose_initialized) return;
    qDebug("Registering SomnoposeLoader");
    RegisterLoader(new SomnoposeLoader());
    //InitModelMap();
    somnopose_initialized=true;
}