/*
 Copyright © 2017 Hasan Yavuz Özderya

 This file is part of serialplot.

 serialplot is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 serialplot is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with serialplot. If not, see <http://www.gnu.org/licenses/>.
*/

#include <stddef.h>
#include <QSaveFile>
#include <QTextStream>

#include "mainwindow.h"
#include "snapshot.h"
#include "snapshotview.h"

Snapshot::Snapshot(MainWindow* parent, QString name, ChannelInfoModel infoModel, bool saved) :
 QObject(parent),
 cInfoModel(infoModel),
 _showAction(this),
 _deleteAction("&Delete", this)
{
 _name = name;
 _saved = saved;

 view = NULL;
 mainWindow = parent;
 _showAction.setText(displayName());
 connect(&_showAction, &QAction::triggered, this, &Snapshot::show);

 _deleteAction.setToolTip(QString("Delete ") + _name);
 connect(&_deleteAction, &QAction::triggered, this, &Snapshot::onDeleteTriggered);
}

Snapshot::~Snapshot()
{
 if (view != NULL)
 {
 delete view;
 }
}

QAction* Snapshot::showAction()
{
 return &_showAction;
}

QAction* Snapshot::deleteAction()
{
 return &_deleteAction;
}

void Snapshot::show()
{
 if (view == NULL)
 {
 view = new SnapshotView(mainWindow, this);
 connect(view, &SnapshotView::closed, this, &Snapshot::viewClosed);
 }
 view->show();
 view->activateWindow();
 view->raise();
}

void Snapshot::viewClosed()
{
 view->deleteLater();
 view = NULL;
}

void Snapshot::onDeleteTriggered()
{
 emit deleteRequested(this);
}

QString Snapshot::name()
{
 return _name;
}

QString Snapshot::displayName()
{
 if (_saved)
 {
 return name();
 }
 else
 {
 return name() + "*";
 }
}

void Snapshot::setName(QString name)
{
 _name = name;
 _showAction.setText(_name);
 emit nameChanged(this);
}

ChannelInfoModel* Snapshot::infoModel()
{
 return &cInfoModel;
}

QString Snapshot::channelName(unsigned channel)
{
 return cInfoModel.name(channel);
}

void Snapshot::save(QString fileName)
{
 // TODO: remove code duplication (MainWindow::onExportCsv)
 QSaveFile file(fileName);

 if (file.open(QIODevice::WriteOnly | QIODevice::Text))
 {
 QTextStream fileStream(&file);

 unsigned numOfChannels = data.size();
 unsigned numOfSamples = data[0].size();

 // print header
 for (unsigned int ci = 0; ci < numOfChannels; ci++)
 {
 fileStream << channelName(ci);
 if (ci != numOfChannels-1) fileStream << ",";
 }
 fileStream << '\n';

 // print rows
 for (unsigned int i = 0; i < numOfSamples; i++)
 {
 for (unsigned int ci = 0; ci < numOfChannels; ci++)
 {
 fileStream << data[ci][i].y();
 if (ci != numOfChannels-1) fileStream << ",";
 }
 fileStream << '\n';
 }

 if (!file.commit())
 {
 qCritical() << "File save error during snapshot save: " << file.error();
 }
 else
 {
 _saved = true;
 _showAction.setText(displayName());
 }
 }
 else
 {
 qCritical() << "File open error during snapshot save: " << file.error();
 }
}

bool Snapshot::isSaved()
{
 return _saved;
}