/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#ifndef QT_NO_DESKTOPSERVICES

#include <qprocess.h>
#include <qstringlist.h>
#include <qdir.h>
#include <qurl.h>
#include <qstringlist.h>
#include <private/qcore_mac_p.h>
#include <qcoreapplication.h>

#include <ApplicationServices/ApplicationServices.h>

QT_BEGIN_NAMESPACE

/*
    Translates a QDesktopServices::StandardLocation into the mac equivalent.
*/
OSType translateLocation(QDesktopServices::StandardLocation type)
{
    switch (type) {
    case QDesktopServices::DesktopLocation:
        return kDesktopFolderType; break;

    case QDesktopServices::DocumentsLocation:
        return kDocumentsFolderType; break;

    case QDesktopServices::FontsLocation:
        // There are at least two different font directories on the mac: /Library/Fonts and ~/Library/Fonts.
        // To select a specific one we have to specify a different first parameter when calling FSFindFolder.
        return kFontsFolderType; break;

    case QDesktopServices::ApplicationsLocation:
        return kApplicationsFolderType; break;

    case QDesktopServices::MusicLocation:
        return kMusicDocumentsFolderType; break;

    case QDesktopServices::MoviesLocation:
        return kMovieDocumentsFolderType; break;

    case QDesktopServices::PicturesLocation:
        return kPictureDocumentsFolderType; break;

    case QDesktopServices::TempLocation:
        return kTemporaryFolderType; break;

    case QDesktopServices::DataLocation:
        return kApplicationSupportFolderType; break;

    case QDesktopServices::CacheLocation:
        return kCachedDataFolderType; break;

    default:
        return kDesktopFolderType; break;
    }
}

static bool lsOpen(const QUrl &url)
{
    if (!url.isValid() || url.scheme().isEmpty())
        return false;

    QCFType<CFURLRef> cfUrl = CFURLCreateWithString(0, QCFString(QString::fromLatin1(url.toEncoded())), 0);
    if (cfUrl == 0)
        return false;

    const OSStatus err = LSOpenCFURLRef(cfUrl, 0);
    return (err == noErr);
}

static bool launchWebBrowser(const QUrl &url)
{
    return lsOpen(url);
}

static bool openDocument(const QUrl &file)
{
    if (!file.isValid())
        return false;

   // LSOpen does not work in this case, use QProcess open instead.
   return QProcess::startDetached(QLatin1String("open"), QStringList() << file.toLocalFile());
}

/*
    Constructs a full unicode path from a FSRef.
*/
static QString getFullPath(const FSRef &ref)
{
    QByteArray ba(2048, 0);
    if (FSRefMakePath(&ref, reinterpret_cast<UInt8 *>(ba.data()), ba.size()) == noErr)
        return QString::fromUtf8(ba).normalized(QString::NormalizationForm_C);
    return QString();
}

QString QDesktopServices::storageLocation(StandardLocation type)
{
     if (type == HomeLocation)
        return QDir::homePath();

     if (type == TempLocation)
         return QDir::tempPath();

    short domain = kOnAppropriateDisk;

    if (type == DataLocation || type == CacheLocation)
        domain = kUserDomain;

     // http://developer.apple.com/documentation/Carbon/Reference/Folder_Manager/Reference/reference.html
     FSRef ref;
     OSErr err = FSFindFolder(domain, translateLocation(type), false, &ref);
     if (err)
        return QString();

    QString path = getFullPath(ref);

    if (type == DataLocation || type == CacheLocation) {
        if (QCoreApplication::organizationName().isEmpty() == false)
            path += QLatin1Char('/') + QCoreApplication::organizationName();
        if (QCoreApplication::applicationName().isEmpty() == false)
            path += QLatin1Char('/') + QCoreApplication::applicationName();
    }

    return path;
}

QString QDesktopServices::displayName(StandardLocation type)
{
    if (QDesktopServices::HomeLocation == type)
        return QObject::tr("Home");

    FSRef ref;
    OSErr err = FSFindFolder(kOnAppropriateDisk, translateLocation(type), false, &ref);
    if (err)
        return QString();

    QCFString displayName;
    err = LSCopyDisplayNameForRef(&ref, &displayName);
    if (err)
        return QString();

    return static_cast<QString>(displayName);
}

QT_END_NAMESPACE

#endif // QT_NO_DESKTOPSERVICES
