/////////////////////////////////////////////////////////////////////////////////
//
//  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 "RiuAdvancedSnapshotExportWidget.h"

#include "RiaApplication.h"

#include "ExportCommands/RicAdvancedSnapshotExportFeature.h"

#include "Rim3dView.h"
#include "RimAdvancedSnapshotExportDefinition.h"
#include "RimCase.h"
#include "RimEclipseCellColors.h"
#include "RimEclipseView.h"
#include "RimProject.h"

#include "RiuTools.h"

#include "cafCmdFeatureManager.h"
#include "cafPdmUiTableView.h"
#include "cafSelectionManager.h"

#include <QAbstractItemView>
#include <QBoxLayout>
#include <QDialogButtonBox>
#include <QFileDialog>
#include <QHeaderView>
#include <QLabel>
#include <QLineEdit>
#include <QMenu>
#include <QPushButton>
#include <QTableView>
#include <QToolButton>
#include <QWidget>

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RiuAdvancedSnapshotExportWidget::RiuAdvancedSnapshotExportWidget( QWidget* parent, RimProject* project )
    : QDialog( parent, RiuTools::defaultDialogFlags() )
    , m_rimProject( project )
{
    setWindowTitle( "Advanced Snapshot Export" );

    int nWidth  = 1000;
    int nHeight = 300;
    resize( nWidth, nHeight );

    QVBoxLayout* dialogLayout = new QVBoxLayout;
    setLayout( dialogLayout );

    m_pdmTableView = new caf::PdmUiTableView( this );
    m_pdmTableView->tableView()->setSelectionMode( QAbstractItemView::ExtendedSelection );
    m_pdmTableView->tableView()->setContextMenuPolicy( Qt::CustomContextMenu );
    m_pdmTableView->enableHeaderText( false );

    connect( m_pdmTableView->tableView(),
             SIGNAL( customContextMenuRequested( QPoint ) ),
             SLOT( customMenuRequested( QPoint ) ) );

    m_pdmTableView->setChildArrayField( &( project->multiSnapshotDefinitions() ) );

    QHeaderView* verticalHeader = m_pdmTableView->tableView()->verticalHeader();
#if QT_VERSION >= 0x050000
    verticalHeader->setSectionResizeMode( QHeaderView::Interactive );
#else
    verticalHeader->setResizeMode( QHeaderView::Interactive );
#endif
    m_pdmTableView->tableView()->resizeColumnsToContents();

    // Set active child array to be able to use generic delete
    caf::SelectionManager::instance()->setActiveChildArrayFieldHandle( &( project->multiSnapshotDefinitions() ) );

    dialogLayout->addWidget( m_pdmTableView );

    // Export folder
    {
        QHBoxLayout* layout = new QHBoxLayout;

        layout->addWidget( new QLabel( "Export folder" ) );

        m_exportFolderLineEdit = new QLineEdit;

        QToolButton* button = new QToolButton;
        button->setSizePolicy( QSizePolicy( QSizePolicy::Fixed, QSizePolicy::Preferred ) );
        button->setText( QLatin1String( "..." ) );

        layout->addWidget( m_exportFolderLineEdit );
        layout->addWidget( button );

        connect( button, SIGNAL( clicked() ), this, SLOT( folderSelectionClicked() ) );

        dialogLayout->addLayout( layout );
    }

    // Buttons
    QDialogButtonBox* buttonBox = new QDialogButtonBox( QDialogButtonBox::Close );
    connect( buttonBox, SIGNAL( accepted() ), this, SLOT( accept() ) );
    connect( buttonBox, SIGNAL( rejected() ), this, SLOT( reject() ) );

    QPushButton* exportButton = new QPushButton( tr( "Export" ) );
    exportButton->setDefault( true );
    buttonBox->addButton( exportButton, QDialogButtonBox::ActionRole );
    connect( exportButton, SIGNAL( clicked() ), this, SLOT( exportSnapshots() ) );

    dialogLayout->addWidget( buttonBox );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RiuAdvancedSnapshotExportWidget::~RiuAdvancedSnapshotExportWidget()
{
    m_pdmTableView->setChildArrayField( nullptr );

    caf::SelectionManager::instance()->setActiveChildArrayFieldHandle( nullptr );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::addSnapshotItemFromActiveView()
{
    if ( !m_rimProject ) return;

    Rim3dView* activeView = RiaApplication::instance()->activeReservoirView();
    if ( activeView )
    {
        RimAdvancedSnapshotExportDefinition* multiSnapshot = new RimAdvancedSnapshotExportDefinition();
        multiSnapshot->view                                = activeView;

        RimEclipseView* eclipseView = dynamic_cast<RimEclipseView*>( activeView );
        if ( eclipseView )
        {
            multiSnapshot->eclipseResultType = eclipseView->cellResult()->resultType();
            multiSnapshot->selectedEclipseResults.v().push_back( eclipseView->cellResult()->resultVariable() );
        }
        multiSnapshot->timeStepStart = activeView->currentTimeStep();
        multiSnapshot->timeStepEnd   = activeView->currentTimeStep();

        RimCase* sourceCase = nullptr;
        activeView->firstAncestorOrThisOfType( sourceCase );
        if ( sourceCase )
        {
            multiSnapshot->additionalCases().push_back( sourceCase );
        }

        m_rimProject->multiSnapshotDefinitions.push_back( multiSnapshot );
        m_rimProject->multiSnapshotDefinitions.uiCapability()->updateConnectedEditors();
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::addEmptySnapshotItems( size_t itemCount )
{
    if ( !m_rimProject ) return;

    for ( size_t i = 0; i < itemCount; i++ )
    {
        RimAdvancedSnapshotExportDefinition* multiSnapshot = new RimAdvancedSnapshotExportDefinition();
        multiSnapshot->isActive                            = false;

        m_rimProject->multiSnapshotDefinitions.push_back( multiSnapshot );
    }

    m_rimProject->multiSnapshotDefinitions.uiCapability()->updateConnectedEditors();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::setExportFolder( const QString& folder )
{
    m_exportFolderLineEdit->setText( folder );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
QString RiuAdvancedSnapshotExportWidget::exportFolder() const
{
    return m_exportFolderLineEdit->text();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::customMenuRequested( QPoint pos )
{
    caf::CmdFeatureManager* commandManager = caf::CmdFeatureManager::instance();

    QMenu menu;
    menu.addAction( commandManager->action( "PdmListField_DeleteItem", "Delete row" ) );

    QAction* newRowAction = new QAction( "New row", this );
    connect( newRowAction, SIGNAL( triggered() ), SLOT( addSnapshotItem() ) );
    menu.addAction( newRowAction );

    QAction* clearAllRows = new QAction( "Clear", this );
    connect( clearAllRows, SIGNAL( triggered() ), SLOT( deleteAllSnapshotItems() ) );
    menu.addAction( clearAllRows );

    // Qt doc: QAbstractScrollArea and its subclasses that map the context menu event to coordinates of the viewport().
    QPoint globalPos = m_pdmTableView->tableView()->viewport()->mapToGlobal( pos );

    menu.exec( globalPos );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::deleteAllSnapshotItems()
{
    if ( !m_rimProject ) return;

    m_rimProject->multiSnapshotDefinitions.deleteAllChildObjects();

    m_rimProject->multiSnapshotDefinitions.uiCapability()->updateConnectedEditors();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::exportSnapshots()
{
    RicAdvancedSnapshotExportFeature::exportMultipleSnapshots( m_exportFolderLineEdit->text(), m_rimProject );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::folderSelectionClicked()
{
    QString defaultPath = m_exportFolderLineEdit->text();

    QString directoryPath =
        QFileDialog::getExistingDirectory( m_exportFolderLineEdit,
                                           tr( "Get existing directory" ),
                                           defaultPath,
                                           QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks );

    if ( !directoryPath.isEmpty() )
    {
        m_exportFolderLineEdit->setText( directoryPath );
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RiuAdvancedSnapshotExportWidget::addSnapshotItem()
{
    addSnapshotItemFromActiveView();
}