/**
 *  Copyright 2003 Braden MacDonald <bradenm_k@shaw.ca>                   
 *  Copyright 2003 Ravikiran Rajagopal <ravi@ee.eng.ohio-state.edu>       
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *
 *
 *  Please see the README
 *
 */

/**
 * @file UserInfo's Dialog for changing your face.
 * @author Braden MacDonald
 */

#include "chfacedlg.h"

#include <QLayout>
#include <QLabel>
#include <QPixmap>
#include <QImage>
#include <QPushButton>
#include <QtCore/QDir>
#include <QCheckBox>

#include <klocale.h>
#include <kfiledialog.h>
#include <kimageio.h>
#include <kmessagebox.h>
#include <konq_operations.h>
#include <kurl.h>

#include "settings.h" // KConfigXT

/**
 * TODO: It would be nice if the widget were in a .ui
 */
ChFaceDlg::ChFaceDlg(const QString& picsdir, QWidget *parent)
    : KDialog(parent)
{
    setCaption(i18nc("@title:window", "Change your Face") );
    setButtons(KDialog::Ok | KDialog::Cancel | KDialog::User1| KDialog::User2);
    setDefaultButton(KDialog::Ok);

    setButtonText(KDialog::User1, i18n("Custom Image..."));
    setButtonText(KDialog::User2, i18n("Remove Image"));

    QWidget *faceDlg = new QWidget;
    ui.setupUi(faceDlg);

    setMainWidget(faceDlg);

    connect(
        ui.m_FacesWidget, SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)),
        this, SLOT(slotFaceWidgetSelectionChanged(QListWidgetItem*))
    );

    connect(ui.m_FacesWidget, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(accept()));
    connect(this, SIGNAL(okClicked()), this, SLOT(accept()));

    connect(this, SIGNAL(user1Clicked()), this, SLOT(slotGetCustomImage()));

    connect(this, SIGNAL(user2Clicked()), this, SLOT(slotRemoveImage()));

#if 0
    QPushButton *acquireBtn = new QPushButton( i18n("&Acquire Image..."), page );
    acquireBtn->setEnabled( false );
    morePics->addWidget( acquireBtn );
#endif

    // Filling the icon view
    QDir facesDir(picsdir);
    if (facesDir.exists()) {
        const QStringList picslist = facesDir.entryList( QDir::Files );
        foreach (const QString &it, picslist) {
            new QListWidgetItem(QIcon(picsdir + it), it.section('.', 0, 0), ui.m_FacesWidget);
        }
    }
    facesDir.setPath(KCFGUserAccount::userFaceDir());
    if (facesDir.exists()) {
        const QStringList picslist = facesDir.entryList(QDir::Files);
        foreach (const QString &it, picslist) {
            new QListWidgetItem(
                QIcon(KCFGUserAccount::userFaceDir() + it),
                QString('/'+ it) == KCFGUserAccount::customFaceFile() ? 
                i18n("(Custom)") : it.section('.', 0, 0),
                ui.m_FacesWidget
            );
        }
    }

    enableButtonOk(false); // since no item is pre-selected, we must only enable the Ok button once a selection is done!
    // connect(this, SIGNAL(okClicked()), SLOT(slotSaveCustomImage()));

    resize( 420, 400 );
}

void ChFaceDlg::addCustomPixmap(const QString &imPath, bool saveCopy)
{
    QImage pix(imPath);
    // TODO: save pix to TMPDIR/userinfo-tmp,
    // then scale and copy *that* to ~/.faces

    if (pix.isNull()) {
        KMessageBox::sorry( this, i18n("There was an error loading the image.") );
        return;
    }
    if ((pix.width() > KCFGUserAccount::faceSize()) || (pix.height() > KCFGUserAccount::faceSize())) {
        // Should be no bigger than certain size.
        pix = pix.scaled(KCFGUserAccount::faceSize(), KCFGUserAccount::faceSize(), Qt::KeepAspectRatio);
    }

    if (saveCopy) {
        // If we should save a copy:
        QDir userfaces(KCFGUserAccount::userFaceDir());
        if (!userfaces.exists()) {
            userfaces.mkdir( userfaces.absolutePath());
        }

        pix.save(userfaces.absolutePath() + "/.userinfo-tmp" , "PNG" );
        KonqOperations::copy(
            this,
            KonqOperations::COPY,
            KUrl::List(
                KUrl(userfaces.absolutePath() + "/.userinfo-tmp")),
                KUrl(userfaces.absolutePath() + '/' + QFileInfo(imPath).fileName().section('.', 0, 0)
            )
        );
#if 0
    if (!pix.save(userfaces.absolutePath() + '/' + imPath , "PNG")) {
        KMessageBox::sorry(this, i18n("There was an error saving the image:\n%1", userfaces.absolutePath()));
    }
#endif
  }

    QListWidgetItem* newface = new QListWidgetItem(
        QIcon(QPixmap::fromImage(pix)),
        QFileInfo(imPath).fileName().section('.',0,0), ui.m_FacesWidget
    );
    ui.m_FacesWidget->scrollToItem(newface);
    ui.m_FacesWidget->setCurrentItem(newface);
}

void ChFaceDlg::slotGetCustomImage()
{
    QCheckBox* checkWidget = new QCheckBox(i18n("&Save copy in custom faces folder for future use"), nullptr);
    checkWidget->setChecked(true);

    KFileDialog dlg(
        QDir::homePath(), KImageIO::pattern(KImageIO::Reading),
        this, checkWidget
    );

    dlg.setOperationMode(KFileDialog::Opening);
    dlg.setInlinePreviewShown(true);
    dlg.setCaption( i18nc("@title:window", "Choose Image"));
    dlg.setMode(KFile::File | KFile::LocalOnly);

    if (dlg.exec() == QDialog::Accepted) {
        addCustomPixmap(dlg.selectedFile(), checkWidget->isChecked());
    }
}

void ChFaceDlg::slotRemoveImage()
{
    ui.m_FacesWidget->clearSelection();
    accept();
}

#if 0
void ChFaceDlg::slotSaveCustomImage()
{
    if (m_FacesWidget->currentItem()->key() ==  USER_CUSTOM_KEY) {
        QDir userfaces(QDir::homePath() + USER_FACES_DIR);
        if (!userfaces.exists()) {
            userfaces.mkdir(userfaces.absolutePath());
        }

        if (!m_FacesWidget->currentItem()->pixmap()->save(userfaces.absolutePath() + USER_CUSTOM_FILE, "PNG")) {
            KMessageBox::sorry(this, i18n("There was an error saving the image:\n%1", userfaces.absolutePath()));
        }
    }
}
#endif

#include "moc_chfacedlg.cpp"