//
// This file is part of the Marble Virtual Globe.
//
// This program is free software licensed under the GNU LGPL. You can
// find a copy of this license in LICENSE.txt in the top directory of
// the source code.
//
// Copyright 2009      Bastian Holst <bastianholst@gmx.de>
// Copyright 2012      Mohammed Nafees <nafees.technocool@gmail.com>
//

// Self
#include "PhotoPlugin.h"

#include "PhotoPluginModel.h"

// Marble
#include "ui_PhotoConfigWidget.h"
#include "MarbleDebug.h"
#include "MarbleModel.h"
#include "MarbleWidget.h"

// Qt
#include <QPushButton>
#include <QLabel>
#include <QStringList>

using namespace Marble;
/* TRANSLATOR Marble::PhotoPlugin */

const quint32 maximumNumberOfItems = 99;

PhotoPlugin::PhotoPlugin()
    : AbstractDataPlugin( 0 ),
      ui_configWidget( 0 ),
      m_configDialog( 0 )
{    
}

PhotoPlugin::PhotoPlugin( const MarbleModel *marbleModel )
    : AbstractDataPlugin( marbleModel ),
      ui_configWidget( 0 ),
      m_configDialog( 0 )
{
    // Plugin is enabled by default
    setEnabled( true );
    // Plugin is not visible by default
    setVisible( false );

    connect( this, SIGNAL(settingsChanged(QString)),
             this, SLOT(updateSettings()) );
    connect( this, SIGNAL(changedNumberOfItems(quint32)),
             this, SLOT(checkNumberOfItems(quint32)) );

    setSettings( QHash<QString,QVariant>() );
}

PhotoPlugin::~PhotoPlugin()
{
    delete ui_configWidget;
    delete m_configDialog;
}

void PhotoPlugin::initialize()
{
    mDebug() << "PhotoPlugin: Initialize";
    PhotoPluginModel *model = new PhotoPluginModel( marbleModel(), this );
    setModel( model );
    updateSettings();
}

QString PhotoPlugin::name() const
{
    return tr( "Photos" );
}

QString PhotoPlugin::guiString() const
{
    return tr( "&Photos" );
}

QString PhotoPlugin::nameId() const
{
    return "photo";
}

QString PhotoPlugin::version() const
{
    return "1.0";
}

QString PhotoPlugin::description() const
{
    return tr( "Automatically downloads images from around the world in preference to their popularity" );
}

QString PhotoPlugin::copyrightYears() const
{
    return "2009, 2012";
}

QList<PluginAuthor> PhotoPlugin::pluginAuthors() const
{
    return QList<PluginAuthor>()
            << PluginAuthor( "Bastian Holst", "bastianholst@gmx.de" )
            << PluginAuthor( "Mohammed Nafees", "nafees.technocool@gmail.com" );
}

QIcon PhotoPlugin::icon() const
{
    return QIcon(":/icons/photo.png");
}

QDialog *PhotoPlugin::configDialog()
{
    if ( !m_configDialog ) {
        // Initializing configuration dialog
        m_configDialog = new QDialog();
        ui_configWidget = new Ui::PhotoConfigWidget;
        ui_configWidget->setupUi( m_configDialog );

        // add licenses to the list widget
        QListWidgetItem *ccByNcSa2 = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        ccByNcSa2->setText( tr("Attribution-NonCommercial-ShareAlike License") );
        ccByNcSa2->setIcon( QIcon() );
        ccByNcSa2->setCheckState( Qt::Checked );
        ccByNcSa2->setData( Qt::UserRole+1, 1 );
        ccByNcSa2->setData( Qt::UserRole+2, "http://creativecommons.org/licenses/by-nc-sa/2.0/" );
        ui_configWidget->m_licenseListWidget->addItem( ccByNcSa2 );
        QListWidgetItem *ccByNc2 = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        ccByNc2->setText( tr("Attribution-NonCommercial License") );
        ccByNc2->setIcon( QIcon() );
        ccByNc2->setCheckState( Qt::Checked );
        ccByNc2->setData( Qt::UserRole+1, 2 );
        ccByNc2->setData( Qt::UserRole+2, "http://creativecommons.org/licenses/by-nc/2.0/" );
        ui_configWidget->m_licenseListWidget->addItem( ccByNc2 );
        QListWidgetItem *ccByNcNd2 = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        ccByNcNd2->setText( tr("Attribution-NonCommercial-NoDerivs License") );
        ccByNcNd2->setIcon( QIcon() );
        ccByNcNd2->setCheckState( Qt::Checked );
        ccByNcNd2->setData( Qt::UserRole+1, 3 );
        ccByNcNd2->setData( Qt::UserRole+2, "http://creativecommons.org/licenses/by-nc-nd/2.0/" );
        ui_configWidget->m_licenseListWidget->addItem( ccByNcNd2 );
        QListWidgetItem *ccBy2 = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        ccBy2->setText( tr("Attribution License") );
        ccBy2->setIcon( QIcon() );
        ccBy2->setCheckState( Qt::Checked );
        ccBy2->setData( Qt::UserRole+1, 4 );
        ccBy2->setData( Qt::UserRole+2, "http://creativecommons.org/licenses/by/2.0/" );
        ui_configWidget->m_licenseListWidget->addItem( ccBy2 );
        QListWidgetItem *ccBySa2 = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        ccBySa2->setText( tr("Attribution-ShareAlike License") );
        ccBySa2->setIcon( QIcon() );
        ccBySa2->setCheckState( Qt::Checked );
        ccBySa2->setData( Qt::UserRole+1, 5 );
        ccBySa2->setData( Qt::UserRole+2, "http://creativecommons.org/licenses/by-sa/2.0/" );
        ui_configWidget->m_licenseListWidget->addItem( ccBySa2 );
        QListWidgetItem *ccByNd2 = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        ccByNd2->setText( tr("Attribution-NoDerivs License") );
        ccByNd2->setIcon( QIcon() );
        ccByNd2->setCheckState( Qt::Checked );
        ccByNd2->setData( Qt::UserRole+1, 6 );
        ccByNd2->setData( Qt::UserRole+2, "http://creativecommons.org/licenses/by-nd/2.0/" );
        ui_configWidget->m_licenseListWidget->addItem( ccByNd2 );
        QListWidgetItem *noLicense = new QListWidgetItem( ui_configWidget->m_licenseListWidget );
        noLicense->setText( tr("No known copyright restrictions") );
        noLicense->setIcon( QIcon() );
        noLicense->setCheckState( Qt::Checked );
        noLicense->setData( Qt::UserRole+1, 7 );
        noLicense->setData( Qt::UserRole+2, "http://flickr.com/commons/usage/" );
        ui_configWidget->m_licenseListWidget->addItem( noLicense );

        readSettings();
        ui_configWidget->m_itemNumberSpinBox->setRange( 0, maximumNumberOfItems );
        connect( ui_configWidget->m_buttonBox, SIGNAL(accepted()),
                                            SLOT(writeSettings()) );
        connect( ui_configWidget->m_buttonBox, SIGNAL(rejected()),
                                            SLOT(readSettings()) );
        QPushButton *applyButton = ui_configWidget->m_buttonBox->button( QDialogButtonBox::Apply );
        connect( applyButton, SIGNAL(clicked()),
                this,        SLOT(writeSettings())  );
    }
    return m_configDialog;
}

QHash<QString,QVariant> PhotoPlugin::settings() const
{
    QHash<QString, QVariant> settings = AbstractDataPlugin::settings();

    settings.insert( "numberOfItems", numberOfItems() );
    settings.insert( "checkState", m_checkStateList.join(",") );

    return settings;
}

void PhotoPlugin::setSettings( const QHash<QString,QVariant> &settings )
{
    AbstractDataPlugin::setSettings( settings );

    setNumberOfItems( qMin<int>( maximumNumberOfItems, settings.value( "numberOfItems", 15 ).toInt() ) );
    m_checkStateList = settings.value( "checkState", "1,2,3,4,5,6,7" ).toString().split( ',', QString::SkipEmptyParts );

    updateSettings();
    readSettings();
}

bool PhotoPlugin::eventFilter(QObject *object, QEvent *event)
{
    if ( isInitialized() ) {
        PhotoPluginModel *photoPluginModel = dynamic_cast<PhotoPluginModel*>( model() );
        Q_ASSERT( photoPluginModel );
        MarbleWidget* widget = dynamic_cast<MarbleWidget*>( object );
        if ( widget ) {
            photoPluginModel->setMarbleWidget( widget );
        }
    }

    return AbstractDataPlugin::eventFilter( object, event );
}

void PhotoPlugin::readSettings()
{
    if ( !m_configDialog )
        return;

    ui_configWidget->m_itemNumberSpinBox->setValue( numberOfItems() );
    for ( int i = 0; i < ui_configWidget->m_licenseListWidget->count(); ++i ) {
        const QString licenseId = QString::number( ui_configWidget->m_licenseListWidget->item(i)->data( Qt::UserRole+1 ).toInt() );
        ui_configWidget->m_licenseListWidget->item(i)->setCheckState( m_checkStateList.contains( licenseId ) ? Qt::Checked : Qt::Unchecked );
    }
}

void PhotoPlugin::writeSettings()
{
    setNumberOfItems( ui_configWidget->m_itemNumberSpinBox->value() );

    QStringList licenseCheckStateList;
    for ( int i = 0; i < ui_configWidget->m_licenseListWidget->count(); ++i ) {
        if ( ui_configWidget->m_licenseListWidget->item(i)->checkState() == Qt::Checked )
        {
            licenseCheckStateList << ui_configWidget->m_licenseListWidget->item(i)->data( Qt::UserRole+1 ).toString();
        }
    }
    m_checkStateList = licenseCheckStateList;

    emit settingsChanged( nameId() );
}

void PhotoPlugin::updateSettings()
{
    AbstractDataPluginModel *abstractModel = model();
    if ( abstractModel != 0 ) {
        abstractModel->setItemSettings( settings() );
    }

    if ( model() ) {
        qobject_cast<PhotoPluginModel*>( model() )->setLicenseValues( m_checkStateList.join(",") );
    }
}

void PhotoPlugin::checkNumberOfItems( quint32 number ) {
    if ( number > maximumNumberOfItems ) {
        setNumberOfItems( maximumNumberOfItems );
    }

    readSettings();
}

Q_EXPORT_PLUGIN2(PhotoPlugin, Marble::PhotoPlugin)

#include "PhotoPlugin.moc"
