/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

*

* 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 Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not,

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:

*

*/

#include "Downloads.h"

#include "Utilities.h"

#include <QtDebug>

#include <QDesktopServices>

#include <QDir>

#include <QFileDialog>

#include <QFileInfo>

#include <QNetworkAccessManager>

#include <QNetworkProxy>

#include <QWebPage>

#include "bedrockprovisioning.h"

#include "downloadcontroller.h"

#include "downloadproxy.h"

namespace GVA {

Downloads::Downloads()

: m_downloadController(0)

{

    setObjectName("downloads");

}

Downloads::~Downloads()

{

    delete m_downloadController;

}

void Downloads::handlePage(QWebPage * page)

{

    if (m_downloadController == 0) {

        QString client = BEDROCK_PROVISIONING::BedrockProvisioning::createBedrockProvisioning()->applicationName();

        QNetworkAccessManager * accessManager = page->networkAccessManager();

        QNetworkProxy proxy = accessManager->proxy();

        m_downloadController = new DownloadController(client, proxy);

        safe_connect(m_downloadController, SIGNAL(downloadCreated(DownloadProxy)),

                this, SLOT(reportDownloadCreated(DownloadProxy)));

        safe_connect(m_downloadController, SIGNAL(downloadStarted(DownloadProxy)),

                this, SLOT(reportDownloadStarted(DownloadProxy)));

        safe_connect(m_downloadController, SIGNAL(downloadFinished(DownloadProxy)),

                this, SLOT(reportDownloadSuccess(DownloadProxy)));

        safe_connect(m_downloadController, SIGNAL(downloadFailed(DownloadProxy, const QString &)),

                this, SLOT(reportDownloadFailure(DownloadProxy, const QString &)));

        safe_connect(m_downloadController, SIGNAL(downloadPaused(DownloadProxy, const QString &)),

                this, SLOT(reportDownloadFailure(DownloadProxy, const QString &)));

        safe_connect(m_downloadController, SIGNAL(downloadCancelled(DownloadProxy, const QString &)),

                this, SLOT(reportDownloadFailure(DownloadProxy, const QString &)));

        safe_connect(m_downloadController, SIGNAL(downloadNetworkLoss(DownloadProxy, const QString &)),

                this, SLOT(reportDownloadFailure(DownloadProxy, const QString &)));

        // There is no argument to extract data from so we may as well

        // just connect signal to signal without going through another slot.

        safe_connect(m_downloadController, SIGNAL(downloadsCleared()),

                this, SIGNAL(downloadsCleared()));

        safe_connect(m_downloadController, SIGNAL(unsupportedDownload(const QUrl &)),

                this, SLOT(reportUnsupportedDownload(const QUrl &)));

    }

    m_downloadController->handlePage(page);

}

static QString imageFileName(const QUrl & url)

{

    QFileInfo info(url.path());

    QString fileName = info.fileName();

    if (fileName.isEmpty()) {

        return "image"; // ;;; localize?

    }

    return fileName;

}

static bool getSaveFileForImage(const QUrl & url, QFileInfo & saveInfo)

{

    QDir defaultDir = QDesktopServices::storageLocation(QDesktopServices::PicturesLocation);

    QString defaultFile = imageFileName(url);

    QString saveFile = QFileDialog::getSaveFileName(

            0,          // parent

            QString(),  // caption (doesn't show on Symbian)

            defaultDir.filePath(defaultFile),

            QString(),  // filter

            0,          // selected filter

            QFileDialog::DontConfirmOverwrite);

    if (saveFile.isEmpty()) {

        return false;

    }

    saveInfo.setFile(saveFile);

    return true;

}

void Downloads::downloadImage(const QString & imageUrl)

{

    QUrl url(imageUrl);

    QFileInfo saveInfo;

    if (!getSaveFileForImage(url, saveInfo)) {

        return;

    }

    m_downloadController->startDownload(url, saveInfo);

}

void Downloads::reportDownloadCreated(DownloadProxy downloadProxy)

{

    // Localize dialog message.

    QString fmt = qtTrId("txt_browser_downloading_file");

    QString msg = fmt.arg(downloadProxy.fileName());

    emit downloadCreated(msg);

}

void Downloads::reportDownloadStarted(DownloadProxy downloadProxy)

{

    // Localize dialog message.

    QString fmt = qtTrId("txt_browser_downloading_file");

    QString msg = fmt.arg(downloadProxy.fileName());

    emit downloadCreated(msg);

}

void Downloads::reportDownloadSuccess(DownloadProxy downloadProxy)

{

    // Localize dialog message.

    QString fmt = qtTrId("txt_browser_file_has_finished_downloading");

    QString msg = fmt.arg(downloadProxy.fileName());

    emit downloadSuccess(msg);

    // Don't forget to remove the download; otherwise the download

    // controller won't know to emit the DownloadsCleared signal.

    downloadProxy.remove();

}

void Downloads::reportDownloadFailure(DownloadProxy downloadProxy, const QString & error)

{

    // What went wrong?

    downloadProxy.debug();

    // Localize dialog message.

    QString fmt = qtTrId("txt_browser_tag_error_tag_file_could_not_be_downloaded");

    QString msg = fmt.arg(

            "<span style=\"color:red\">",

            "</span>",

            downloadProxy.fileName());

    emit downloadFailure(msg);

    // Don't forget to remove the download; otherwise the download

    // controller won't know to emit the DownloadsCleared signal.

    downloadProxy.remove();

}

void Downloads::reportUnsupportedDownload(const QUrl & url)

{

    emit unsupportedDownload("Unsupported content"); // ;;; localize? or not b/c this is temporary?

}

} // namespace GVA