/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#include "operation.h"

#include "settings.h"

#include <utils/persistentsettings.h>

#include <QDir>
#include <QFile>

#include <iostream>

QVariant Operation::valueFromString(const QString &v)
{
    int pos = v.indexOf(QLatin1Char(':'));
    if (pos <= 0)
        return QVariant();
    const QString type = v.left(pos);
    const QString value = v.mid(pos + 1);

    if (type == QLatin1String("int")) {
        return QVariant(value.toInt());
    } else if (type == QLatin1String("bool")) {
        const QString tmp = value.toLower();
        return QVariant(tmp == QLatin1String("true") || tmp == QLatin1String("yes")
                        || tmp == QLatin1String("1") || tmp == QLatin1String("on"));
    } else if (type == QLatin1String("QByteArray")) {
        return QVariant(value.toLocal8Bit());
    } else if (type == QLatin1String("QString")) {
        return QVariant(value);
    } else if (type == QLatin1String("QVariantList")) {
        QVariantList list;
        const QStringList elements = value.split(QLatin1Char(','));
        foreach (const QString &e, elements)
            list << QVariant(e);
        return QVariant(list);
    }
    return QVariant();
}

Operation::KeyValuePair::KeyValuePair(const QString &k, const QString &v) :
    value(valueFromString(v))
{
    key = k.split(QLatin1Char('/'));
}

Operation::KeyValuePair::KeyValuePair(const QString &k, const QVariant &v) :
    value(v)
{
    key = k.split(QLatin1Char('/'));
}

Operation::KeyValuePair::KeyValuePair(const QStringList &k, const QString &v) :
    key(k), value(valueFromString(v))
{ }

Operation::KeyValuePair::KeyValuePair(const QStringList &k, const QVariant &v) :
    key(k), value(v)
{ }

QVariantMap Operation::load(const QString &file)
{
    QVariantMap map;

    // Read values from original file:
    Utils::FilePath path = Settings::instance()->getPath(file);
    if (path.exists()) {
        Utils::PersistentSettingsReader reader;
        if (!reader.load(path))
            return QVariantMap();
        map = reader.restoreValues();
    }

    return map;
}

bool Operation::save(const QVariantMap &map, const QString &file) const
{
    Utils::FilePath path = Settings::instance()->getPath(file);

    if (path.isEmpty()) {
        std::cerr << "Error: No path found for " << qPrintable(file) << "." << std::endl;
        return false;
    }

    Utils::FilePath dirName = path.parentDir();
    QDir dir(dirName.toString());
    if (!dir.exists() && !dir.mkpath(QLatin1String("."))) {
        std::cerr << "Error: Could not create directory " << qPrintable(dirName.toString())
                  << "." << std::endl;
        return false;
    }

    Utils::PersistentSettingsWriter writer(path, QLatin1String("QtCreator")
                                           + file[0].toUpper() + file.mid(1));
    QString errorMessage;
    if (!writer.save(map, &errorMessage)) {
        std::cerr << "Error: Could not save settings " << qPrintable(path.toString())
                  << "." << std::endl;
        return false;
    }
    if (!QFile::setPermissions(path.toString(),
                               QFile::ReadOwner | QFile::WriteOwner
                               | QFile::ReadGroup | QFile::ReadOther)) {
        std::cerr << "Error: Could not set permissions for " << qPrintable(path.toString())
                  << "." << std::endl;
        return false;
    }
    return true;
}