/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>

 *

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

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

 * the Free Software Foundation; version 2 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 General Public License for more details.

 *

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

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

/**

 * @file

 * @brief DataManager class implementation

 */

#include <QMap>

#include <QStringList>

#include <QFileInfo>

#include "hwconsts.h"

#include "DataManager.h"

DataManager::DataManager()

{

    m_userData = new QDir(cfgdir->absolutePath());

    if (!m_userData->cd("Data"))

        m_userData = NULL;

    m_defaultData = new QDir(datadir->absolutePath());

    m_hatModel = NULL;

    m_mapModel = NULL;

    m_themeModel = NULL;

}

DataManager & DataManager::instance()

{

    static DataManager instance;

    return instance;

}

QStringList DataManager::entryList(

    const QString & subDirectory,

    QDir::Filters filters,

    const QStringList & nameFilters

) const

{

    QStringList result;

    if (m_userData != NULL)

    {

        QDir tmpDir(*m_userData);

        if (tmpDir.cd(subDirectory))

            result.append(tmpDir.entryList(nameFilters, filters));

    }

    QDir tmpDir(*m_defaultData);

    if (tmpDir.cd(subDirectory))

        result.append(tmpDir.entryList(nameFilters, filters));

    result.removeDuplicates();

    // sort case-insensitive

    QMap<QString, QString> sortedFileNames;

    foreach ( QString fn, result)

    {

        sortedFileNames.insert(fn.toLower(), fn);

    }

    result = sortedFileNames.values();

    return result;

}

QString DataManager::findFileForRead(

    const QString & relativeDataFilePath) const

{

    QString path;

    if (m_userData != NULL)

        path = m_userData->absolutePath()+"/"+relativeDataFilePath;

    if ((!path.isEmpty()) && (!QFile::exists(path)))

        path = m_defaultData->absolutePath()+"/"+relativeDataFilePath;

    return path;

}

QString DataManager::findFileForWrite(

    const QString & relativeDataFilePath) const

{

    if (m_userData != NULL)

    {

        QString path = m_userData->absolutePath()+"/"+relativeDataFilePath;

        // create folders if needed

        QDir tmp;

        tmp.mkpath(QFileInfo(path).absolutePath());

        return path;

    }

    return "";

}

HatModel * DataManager::hatModel()

{

    if (m_hatModel == NULL) {

        m_hatModel = new HatModel();

        m_hatModel->loadHats();

    }

    return m_hatModel;

}

MapModel * DataManager::mapModel()

{

    if (m_mapModel == NULL) {

        m_mapModel = new MapModel();

        m_mapModel->loadMaps();

    }

    return m_mapModel;

}

ThemeModel * DataManager::themeModel()

{

    if (m_themeModel == NULL) {

        m_themeModel = new ThemeModel();

        m_themeModel->loadThemes();

    }

    return m_themeModel;

}

void DataManager::reload()

{

    m_hatModel->loadHats();

    m_mapModel->loadMaps();

    m_themeModel->loadThemes();

    emit updated();

}