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** Copyright (C) 2016 The Qt Company Ltd.
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**
** This file is part of Qbs.
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** General Public License version 3 as published by the Free Software
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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****************************************************************************/

#include "settings.h"

#include "error.h"
#include "profile.h"
#include "settingscreator.h"

#include <logging/translator.h>

#include <QtCore/qsettings.h>

#include <algorithm>

namespace qbs {
using namespace Internal;

Settings::Settings(const QString &baseDir)
    : m_settings(SettingsCreator(baseDir).getQSettings()), m_baseDir(baseDir)
{
    // Actual qbs settings are stored transparently within a group, because QSettings
    // can see non-qbs fallback settings e.g. from QtProject that we're not interested in.
    m_settings->beginGroup(QLatin1String("org/qt-project/qbs"));
}

Settings::~Settings()
{
    delete m_settings;
}

QVariant Settings::value(const QString &key, const QVariant &defaultValue) const
{
    return m_settings->value(internalRepresentation(key), defaultValue);
}

QStringList Settings::allKeys() const
{
    QStringList keys  = m_settings->allKeys();
    fixupKeys(keys);
    return keys;
}

QStringList Settings::directChildren(const QString &parentGroup)
{
    m_settings->beginGroup(internalRepresentation(parentGroup));
    QStringList children = m_settings->childGroups();
    children << m_settings->childKeys();
    m_settings->endGroup();
    fixupKeys(children);
    return children;
}

QStringList Settings::allKeysWithPrefix(const QString &group) const
{
    m_settings->beginGroup(internalRepresentation(group));
    QStringList keys = m_settings->allKeys();
    m_settings->endGroup();
    fixupKeys(keys);
    return keys;
}

void Settings::setValue(const QString &key, const QVariant &value)
{
    if (key.startsWith(QLatin1String("profiles.") + Profile::fallbackName()))  {
        throw ErrorInfo(Tr::tr("Invalid use of special profile name '%1'.")
                        .arg(Profile::fallbackName()));
    }
    m_settings->setValue(internalRepresentation(key), value);
}

void Settings::remove(const QString &key)
{
    m_settings->remove(internalRepresentation(key));
}

void Settings::clear()
{
    m_settings->clear();
}

void Settings::sync()
{
    m_settings->sync();
}

QString Settings::defaultProfile() const
{
    return value(QLatin1String("defaultProfile")).toString();
}

QStringList Settings::profiles() const
{
    m_settings->beginGroup(QLatin1String("profiles"));
    QStringList result = m_settings->childGroups();
    m_settings->endGroup();
    return result;
}

QString Settings::fileName() const
{
    return m_settings->fileName();
}

QString Settings::internalRepresentation(const QString &externalKey) const
{
    QString internalKey = externalKey;
    return internalKey.replace(QLatin1Char('.'), QLatin1Char('/'));
}

QString Settings::externalRepresentation(const QString &internalKey) const
{
    QString externalKey = internalKey;
    return externalKey.replace(QLatin1Char('/'), QLatin1Char('.'));
}

void Settings::fixupKeys(QStringList &keys) const
{
    keys.sort();
    keys.removeDuplicates();
    for (auto &key : keys)
        key = externalRepresentation(key);
}

} // namespace qbs