/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2006-07-24
 * Description : a dialog to select a camera folders.
 *
 * SPDX-FileCopyrightText: 2006-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * ============================================================ */

#include "camerafolderdialog.h"

// Qt includes

#include <QLabel>
#include <QFrame>
#include <QGridLayout>
#include <QStandardPaths>
#include <QApplication>
#include <QStyle>
#include <QDialogButtonBox>
#include <QVBoxLayout>
#include <QPushButton>

// KDE includes

#include <klocalizedstring.h>

// Local includes

#include "digikam_debug.h"
#include "digikam_globals.h"
#include "camerafolderitem.h"
#include "camerafolderview.h"
#include "dxmlguiwindow.h"

namespace Digikam
{

class Q_DECL_HIDDEN CameraFolderDialog::Private
{
public:

    Private() = default;

    QString           rootPath;
    QDialogButtonBox* buttons       = nullptr;

    CameraFolderView* folderView    = nullptr;
};

CameraFolderDialog::CameraFolderDialog(QWidget* const parent, const QMap<QString, int>& map,
                                       const QString& cameraName, const QString& rootPath)
    : QDialog(parent),
      d      (new Private)
{
    setModal(true);
    setWindowTitle(i18nc("@title:window %1: name of the camera", "%1 - Select Camera Folder", cameraName));

    const int spacing       = layoutSpacing();


    d->buttons              = new QDialogButtonBox(QDialogButtonBox::Help | QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
    d->buttons->button(QDialogButtonBox::Ok)->setDefault(true);
    d->buttons->button(QDialogButtonBox::Ok)->setEnabled(false);

    d->rootPath             = rootPath;
    QFrame* const page      = new QFrame(this);

    QGridLayout* const grid = new QGridLayout(page);
    d->folderView           = new CameraFolderView(page);
    QLabel* const logo      = new QLabel(page);
    QLabel* const message   = new QLabel(page);

    logo->setPixmap(QIcon::fromTheme(QLatin1String("digikam")).pixmap(QSize(48,48)));

    message->setText(i18nc("@info", "Please select the camera folder "
                                    "where you want to upload the images."));
    message->setWordWrap(true);

    grid->addWidget(logo,          0, 0, 1, 1);
    grid->addWidget(message,       1, 0, 1, 1);
    grid->addWidget(d->folderView, 0, 1, 3, 1);
    grid->setColumnStretch(0, 2);
    grid->setColumnStretch(1, 10);
    grid->setRowStretch(2, 10);
    grid->setContentsMargins(spacing, spacing, spacing, spacing);
    grid->setSpacing(spacing);

    QVBoxLayout* const vbx = new QVBoxLayout(this);
    vbx->addWidget(page);
    vbx->addWidget(d->buttons);
    setLayout(vbx);

    d->folderView->addVirtualFolder(cameraName);
    d->folderView->addRootFolder(QLatin1String("/"));

    for (QMap<QString, int>::const_iterator it = map.constBegin() ;
         it != map.constEnd() ; ++it)
    {
        QString folder(it.key());

        if (folder != QLatin1String("/"))
        {
            if (folder.startsWith(rootPath) && rootPath != QLatin1String("/"))
            {
                folder.remove(0, rootPath.length());
            }

            QString path(QLatin1Char('/'));
            const auto subs = folder.split(QLatin1Char('/'), Qt::SkipEmptyParts);

            for (const QString& sub : subs)
            {
                qCDebug(DIGIKAM_IMPORTUI_LOG) << "Camera folder:" << path << "Subfolder:" << sub;
                d->folderView->addFolder(path, sub, it.value());
                path += sub + QLatin1Char('/');
            }
        }
    }

    connect(d->folderView, SIGNAL(signalFolderChanged(CameraFolderItem*)),
            this, SLOT(slotFolderPathSelectionChanged(CameraFolderItem*)));

    connect(d->buttons->button(QDialogButtonBox::Ok), SIGNAL(clicked()),
            this, SLOT(accept()));

    connect(d->buttons->button(QDialogButtonBox::Cancel), SIGNAL(clicked()),
            this, SLOT(reject()));

    connect(d->buttons->button(QDialogButtonBox::Help), SIGNAL(clicked()),
            this, SLOT(slotHelp()));

    adjustSize();

    // make sure the ok button is properly set up

    d->buttons->button(QDialogButtonBox::Ok)->setEnabled(d->folderView->currentItem() != nullptr);
}

CameraFolderDialog::~CameraFolderDialog()
{
    delete d;
}

QString CameraFolderDialog::selectedFolderPath() const
{
    QTreeWidgetItem* const item = d->folderView->currentItem();

    if (!item)
    {
        return QString();
    }

    CameraFolderItem* const folderItem = dynamic_cast<CameraFolderItem*>(item);

    if (!folderItem)
    {
        return QString();
    }

    if (folderItem->isVirtualFolder())
    {
        return QString(d->rootPath);
    }

    // Case of Gphoto2 cameras. No need to duplicate root '/'.

    if (d->rootPath == QLatin1String("/"))
    {
        return(folderItem->folderPath());
    }

    return (d->rootPath + folderItem->folderPath());
}

void CameraFolderDialog::slotFolderPathSelectionChanged(CameraFolderItem* item)
{
    if (item)
    {
        d->buttons->button(QDialogButtonBox::Ok)->setEnabled(true);
        qCDebug(DIGIKAM_IMPORTUI_LOG) << "Camera folder path: " << selectedFolderPath();
    }
    else
    {
        d->buttons->button(QDialogButtonBox::Ok)->setEnabled(false);
    }
}

void CameraFolderDialog::slotHelp()
{
    openOnlineDocumentation(QLatin1String("import_tools"), QLatin1String("camera_import"), QLatin1String("camera-upload"));
}

} // namespace Digikam

#include "moc_camerafolderdialog.cpp"
