/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2015 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

/**

 * @file

 * @brief DataManager class implementation

 */

#include <QMap>

#include <QStringList>

#include <QStandardItemModel>

#include <QFileInfo>

#include <QSettings>

#include <QColor>

#include <SDL2/SDL.h>

#include "hwconsts.h"

#include "HWApplication.h"

#include "sdlkeys.h"

#include "KeyMap.h"

#include "physfs.h"

#include "DataManager.h"

#include "GameStyleModel.h"

#include "HatModel.h"

#include "MapModel.h"

#include "ThemeModel.h"

DataManager::DataManager()

{

    m_hatModel = NULL;

    m_staticMapModel = NULL;

    m_missionMapModel = NULL;

    m_themeModel = NULL;

    m_colorsModel = NULL;

    m_bindsModel = NULL;

    m_gameStyleModel = NULL;

}

DataManager & DataManager::instance()

{

    static DataManager instance;

    return instance;

}

QStringList DataManager::entryList(

    const QString & subDirectory,

    QDir::Filters filters,

    const QStringList & nameFilters,

    bool withDLC

) const

{

    QDir tmpDir(QString("physfs://%1").arg(subDirectory));

    QStringList result = tmpDir.entryList(nameFilters, filters);

    // sort case-insensitive

    QMap<QString, QString> sortedFileNames;

    QString absolutePath = datadir->absolutePath().toLocal8Bit().data();

    foreach ( QString fn, result)

    {

        // Filter out DLC entries if desired

        QString realDir = PHYSFS_getRealDir(QString(subDirectory + "/" + fn).toLocal8Bit().data());

        if(withDLC || realDir == absolutePath)

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

    }

    result = sortedFileNames.values();

    return result;

}

GameStyleModel * DataManager::gameStyleModel()

{

    if (m_gameStyleModel == NULL) {

        m_gameStyleModel = new GameStyleModel();

        m_gameStyleModel->loadGameStyles();

    }

    return m_gameStyleModel;

}

HatModel * DataManager::hatModel()

{

    if (m_hatModel == NULL) {

        m_hatModel = new HatModel();

        m_hatModel->loadHats();

    }

    return m_hatModel;

}

MapModel * DataManager::staticMapModel()

{

    if (m_staticMapModel == NULL) {

        m_staticMapModel = new MapModel(MapModel::StaticMap, this);

    }

    return m_staticMapModel;

}

MapModel * DataManager::missionMapModel()

{

    if (m_missionMapModel == NULL) {

        m_missionMapModel = new MapModel(MapModel::MissionMap, this);

    }

    return m_missionMapModel;

}

ThemeModel * DataManager::themeModel()

{

    if (m_themeModel == NULL) {

        m_themeModel = new ThemeModel();

    }

    return m_themeModel;

}

QStandardItemModel * DataManager::colorsModel()

{

    if(m_colorsModel == NULL)

    {

        m_colorsModel = new QStandardItemModel();

        int i = 0;

        while(colors[i])

        {

            QStandardItem * item = new QStandardItem();

            item->setData(QColor(colors[i]));

            m_colorsModel->appendRow(item);

            ++i;

        }

    }

    return m_colorsModel;

}

QStandardItemModel * DataManager::bindsModel()

{

    KeyMap km = KeyMap::instance();

    if(m_bindsModel == NULL)

    {

        m_bindsModel = new QStandardItemModel();

        QStandardItem * firstItem = new QStandardItem();

        firstItem->setData(tr("Use Default"), Qt::DisplayRole);

        firstItem->setData("default", Qt::UserRole + 1);

        m_bindsModel->appendRow(firstItem);

        for(int j = 0; sdlkeys[j][1][0] != '\0'; j++)

        {

            QStandardItem * item = new QStandardItem();

            QString keyId = QString(sdlkeys[j][0]);

            QString keyDisplay;

            bool isKeyboard = sdlkeys_iskeyboard[j] == true;

            if (keyId == "none" || (!isKeyboard))

                keyDisplay = HWApplication::translate("binds (keys)", sdlkeys[j][1]);

            else

                // Get key name with respect to keyboard layout

                keyDisplay = QString(SDL_GetKeyName(SDL_GetKeyFromScancode(km.getScancodeFromKeyname(sdlkeys[j][0]))));

            bool kbFallback = keyDisplay.trimmed().isEmpty();

            if (kbFallback)

            {

                keyDisplay = QString(sdlkeys[j][1]);

                if ((QString(sdlkeys[j][0]) != "f13") && (QString(sdlkeys[j][0]) != "f14") && (QString(sdlkeys[j][0]) != "f15"))

                {

                    // If SDL doesn't know a name, show fallback name and a warning

                    keyDisplay = keyDisplay + QString(" ") + HWApplication::translate("binds (keys)", "(QWERTY)");

                }

            }

            if (isKeyboard)

            {

                if (!kbFallback)

                    keyDisplay = HWApplication::translate("binds (keys)", keyDisplay.toUtf8().constData());

                keyDisplay = HWApplication::translate("binds (keys)", "Keyboard") + QString(": ") + keyDisplay;

            }

            item->setData(keyDisplay, Qt::DisplayRole);

            item->setData(sdlkeys[j][0], Qt::UserRole + 1);

            m_bindsModel->appendRow(item);

        }

    }

    return m_bindsModel;

}

QString DataManager::settingsFileName()

{

    if(m_settingsFileName.isEmpty())

    {

        QFile settingsFile(cfgdir->absoluteFilePath("settings.ini"));

        if(!settingsFile.exists())

        {

            QFile oldSettingsFile(cfgdir->absoluteFilePath("hedgewars.ini"));

            settingsFile.open(QFile::WriteOnly);

            settingsFile.close();

            if(oldSettingsFile.exists())

            {

                QSettings sOld(oldSettingsFile.fileName(), QSettings::IniFormat);

                QSettings sNew(settingsFile.fileName(), QSettings::IniFormat);

                sNew.setIniCodec("UTF-8");

                foreach(const QString & key, sOld.allKeys())

                {

                    if(key.startsWith("colors/color"))

                        sNew.setValue(key, sOld.value(key).value<QColor>().name());

                    else

                        sNew.setValue(key, sOld.value(key));

                }

            }

        }

        m_settingsFileName = settingsFile.fileName();

    }

    return m_settingsFileName;

}

QString DataManager::safeFileName(QString fileName)

{

    fileName.replace('\\', '_');

    fileName.replace('/', '_');

    fileName.replace(':', '_');

    return fileName;

}

void DataManager::reload()

{

    // removed for now (also code was a bit unclean, could lead to segfault if

    // reload() is called before all members are initialized - because currently

    // they are initialized in the getter methods rather than the constructor)

}

void DataManager::resetColors()

{

    for(int i = colorsModel()->rowCount() - 1; i >= 0; --i)

    {

        m_colorsModel->item(i)->setData(QColor(colors[i]));

    }

}

bool DataManager::ensureFileExists(const QString &fileName)

{

    QFile tmpfile(fileName);

    if (!tmpfile.exists())

        return tmpfile.open(QFile::WriteOnly);

    else

        return true;

}