/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2016 Statoil ASA
//
//  ResInsight 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.
//
//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RicSnapshotViewToFileFeature.h"

#include "RiaGuiApplication.h"
#include "RiaLogging.h"

#include "RimMainPlotCollection.h"
#include "RimProject.h"
#include "RimViewWindow.h"
#include "RiuPlotMainWindow.h"

#include "RicSnapshotFilenameGenerator.h"

#include "cafUtils.h"

#include <QAction>
#include <QClipboard>
#include <QDebug>
#include <QFileDialog>
#include <QFileInfo>
#include <QMdiSubWindow>

CAF_CMD_SOURCE_INIT( RicSnapshotViewToFileFeature, "RicSnapshotViewToFileFeature" );

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicSnapshotViewToFileFeature::saveSnapshotAs( const QString& fileName, RimViewWindow* viewWindow )
{
    if ( viewWindow )
    {
        QImage image = viewWindow->snapshotWindowContent();
        saveSnapshotAs( fileName, image );
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicSnapshotViewToFileFeature::saveSnapshotAs( const QString& fileName, const QImage& image )
{
    if ( !image.isNull() )
    {
        if ( image.save( fileName ) )
        {
            RiaLogging::info( QString( "Exported snapshot image to %1" ).arg( fileName ) );
        }
        else
        {
            RiaLogging::error( QString( "Error when trying to export snapshot image to %1" ).arg( fileName ) );
        }
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicSnapshotViewToFileFeature::saveToFile( const QImage& image, const QString& defaultFileBaseName )
{
    RiaApplication* app  = RiaApplication::instance();
    RimProject*     proj = app->project();

    QString startPath;
    if ( !proj->fileName().isEmpty() )
    {
        QFileInfo fi( proj->fileName() );
        startPath = fi.absolutePath();
    }
    else
    {
        startPath = app->lastUsedDialogDirectory( "IMAGE_SNAPSHOT" );
    }

    QString defaultAbsFileName = caf::Utils::constructFullFileName( startPath, defaultFileBaseName, ".png" );
    QString fileName           = QFileDialog::getSaveFileName( nullptr, tr( "Export to File" ), defaultAbsFileName );
    if ( fileName.isEmpty() )
    {
        return;
    }

    // Remember the directory to next time
    app->setLastUsedDialogDirectory( "IMAGE_SNAPSHOT", QFileInfo( fileName ).absolutePath() );

    RicSnapshotViewToFileFeature::saveSnapshotAs( fileName, image );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
QIcon RicSnapshotViewToFileFeature::icon()
{
    return QIcon( ":/SnapShotSave.png" );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
QString RicSnapshotViewToFileFeature::text()
{
    return "Snapshot To File";
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RicSnapshotViewToFileFeature::isCommandEnabled()
{
    return true;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicSnapshotViewToFileFeature::onActionTriggered( bool isChecked )
{
    // Get active view window before displaying the file selection dialog
    // If this is done after the file save dialog is displayed (and closed)
    // app->activeViewWindow() returns nullptr on Linux

    RimViewWindow* viewWindow = RiaGuiApplication::activeViewWindow();
    if ( !viewWindow )
    {
        RiaLogging::error( "No view window is available, nothing to do" );

        return;
    }

    QImage image = viewWindow->snapshotWindowContent();
    saveToFile( image, RicSnapshotFilenameGenerator::generateSnapshotFileName( viewWindow ) );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RicSnapshotViewToFileFeature::setupActionLook( QAction* actionToSetup )
{
    actionToSetup->setText( text() );
    actionToSetup->setIcon( icon() );
}