/****************************************************************************
**
** Copyright (C) 2016 Dmitry Savchenko
** Copyright (C) 2016 Vasiliy Sorokin
** 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 "settings.h"
#include "constants.h"

#include <coreplugin/coreconstants.h>

#include <QSettings>

namespace Todo {
namespace Internal {

void Settings::save(QSettings *settings) const
{
    settings->beginGroup(QLatin1String(Constants::SETTINGS_GROUP));
    settings->setValue(QLatin1String(Constants::SCANNING_SCOPE), scanningScope);

    settings->beginWriteArray(QLatin1String(Constants::KEYWORDS_LIST));
    if (const int size = keywords.size()) {
        const QString nameKey = QLatin1String("name");
        const QString colorKey = QLatin1String("color");
        const QString iconTypeKey = QLatin1String("iconType");
        for (int i = 0; i < size; ++i) {
            settings->setArrayIndex(i);
            settings->setValue(nameKey, keywords.at(i).name);
            settings->setValue(colorKey, keywords.at(i).color);
            settings->setValue(iconTypeKey, static_cast<int>(keywords.at(i).iconType));
        }
    }
    settings->endArray();

    settings->endGroup();
    settings->sync();
}

// Compatibility helper for transition from 3.6 to higher
// TODO: remove in 4.0
IconType resourceToTypeKey(const QString &key)
{
    if (key.contains(QLatin1String("error")))
        return IconType::Error;
    else if (key.contains(QLatin1String("warning")))
        return IconType::Warning;
    return IconType::Info;
}

void Settings::load(QSettings *settings)
{
    setDefault();

    settings->beginGroup(QLatin1String(Constants::SETTINGS_GROUP));

    scanningScope = static_cast<ScanningScope>(settings->value(QLatin1String(Constants::SCANNING_SCOPE),
        ScanningScopeCurrentFile).toInt());
    if (scanningScope >= ScanningScopeMax)
        scanningScope = ScanningScopeCurrentFile;

    KeywordList newKeywords;
    const int keywordsSize = settings->beginReadArray(QLatin1String(Constants::KEYWORDS_LIST));
    if (keywordsSize > 0) {
        const QString nameKey = QLatin1String("name");
        const QString colorKey = QLatin1String("color");
        const QString iconResourceKey = QLatin1String("iconResource"); // Legacy since 3.7 TODO: remove in 4.0
        const QString iconTypeKey = QLatin1String("iconType");
        for (int i = 0; i < keywordsSize; ++i) {
            settings->setArrayIndex(i);
            Keyword keyword;
            keyword.name = settings->value(nameKey).toString();
            keyword.color = settings->value(colorKey).value<QColor>();
            keyword.iconType = settings->contains(iconTypeKey) ?
                        static_cast<IconType>(settings->value(iconTypeKey).toInt())
                      : resourceToTypeKey(settings->value(iconResourceKey).toString());
            newKeywords << keyword;
        }
        keywords = newKeywords;
    }
    settings->endArray();

    settings->endGroup();
}

void Settings::setDefault()
{
    scanningScope = ScanningScopeCurrentFile;

    keywords.clear();

    Keyword keyword;

    keyword.name = QLatin1String("TODO");
    keyword.iconType = IconType::Todo;
    keyword.color = QColor(QLatin1String(Constants::COLOR_TODO_BG));
    keywords.append(keyword);

    keyword.name = QLatin1String("NOTE");
    keyword.iconType = IconType::Info;
    keyword.color = QColor(QLatin1String(Constants::COLOR_NOTE_BG));
    keywords.append(keyword);

    keyword.name = QLatin1String("FIXME");
    keyword.iconType = IconType::Error;
    keyword.color = QColor(QLatin1String(Constants::COLOR_FIXME_BG));
    keywords.append(keyword);

    keyword.name = QLatin1String("BUG");
    keyword.iconType = IconType::Bug;
    keyword.color = QColor(QLatin1String(Constants::COLOR_BUG_BG));
    keywords.append(keyword);

    keyword.name = QLatin1String("WARNING");
    keyword.iconType = IconType::Warning;
    keyword.color = QColor(QLatin1String(Constants::COLOR_WARNING_BG));
    keywords.append(keyword);
}

bool Settings::equals(const Settings &other) const
{
    return (keywords == other.keywords)
            && (scanningScope == other.scanningScope);
}

bool operator ==(Settings &s1, Settings &s2)
{
    return s1.equals(s2);
}

bool operator !=(Settings &s1, Settings &s2)
{
    return !s1.equals(s2);
}

} // namespace Internal
} // namespace Todo

