/*

 * 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 MapModel class implementation

 */

#include <QSettings>

#include "physfs.h"

#include "MapModel.h"

#include "HWApplication.h"

#include "hwconsts.h"

MapModel::MapInfo MapModel::MapInfoRandom = {MapModel::GeneratedMap, "+rnd+", "", 0, "", "", "", false};

MapModel::MapInfo MapModel::MapInfoMaze = {MapModel::GeneratedMaze, "+maze+", "", 0, "", "", "", false};

MapModel::MapInfo MapModel::MapInfoPerlin = {MapModel::GeneratedMaze, "+perlin+", "", 0, "", "", "", false};

MapModel::MapInfo MapModel::MapInfoDrawn = {MapModel::HandDrawnMap, "+drawn+", "", 0, "", "", "", false};

MapModel::MapInfo MapModel::MapInfoForts = {MapModel::FortsMap, "+forts+", "", 0, "", "", "", false};

MapModel::MapModel(MapType maptype, QObject *parent) : QStandardItemModel(parent)

{

    m_maptype = maptype;

    m_loaded = false;

    m_filteredNoDLC = NULL;

}

QSortFilterProxyModel * MapModel::withoutDLC()

{

    if (m_filteredNoDLC == NULL)

    {

        m_filteredNoDLC = new QSortFilterProxyModel(this);

        m_filteredNoDLC->setSourceModel(this);

        // filtering based on IsDlcRole would be nicer

        // but seems this model can only do string-based filtering :|

        m_filteredNoDLC->setFilterRegExp(QRegExp("^[^*]"));

    }

    return m_filteredNoDLC;

}

bool MapModel::loadMaps()

{

    if(m_loaded)

        return false;

    m_loaded = true;

    qDebug("[LAZINESS] MapModel::loadMaps()");

    // this method resets the contents of this model (important to know for views).

    beginResetModel();

    // we'll need the DataManager a few times, so let's get a reference to it

    DataManager & datamgr = DataManager::instance();

    // fetch list of available maps

    QStringList maps =

        datamgr.entryList("Maps", QDir::AllDirs | QDir::NoDotAndDotDot);

    // empty list, so that we can (re)fill it

    QStandardItemModel::clear();

    //QList<QStandardItem *> staticMaps;

    //QList<QStandardItem *> missionMaps;

    QList<QStandardItem *> mapList;

    // add mission/static maps to lists

    foreach (QString map, maps)

    {

        // only 2 map relate files are relevant:

        // - the cfg file that contains the settings/info of the map

        // - the lua file - if it exists it's a mission, otherwise it isn't

        QFile mapLuaFile(QString("physfs://Maps/%1/map.lua").arg(map));

        QFile mapCfgFile(QString("physfs://Maps/%1/map.cfg").arg(map));

        if (mapCfgFile.open(QFile::ReadOnly))

        {

            QString caption;

            QString theme;

            quint32 limit = 0;

            QString scheme;

            QString weapons;

            QString desc;

            bool dlc;

            // if there is a lua file for this map, then it's a mission

            bool isMission = mapLuaFile.exists();

            MapType type = isMission ? MissionMap : StaticMap;

            // if we're supposed to ignore this type, continue

            if (type != m_maptype) continue;

            // load map info from file

            QTextStream input(&mapCfgFile);

            theme = input.readLine();

            limit = input.readLine().toInt();

            if (isMission) { // scheme and weapons are only relevant for missions

                scheme = input.readLine();

                weapons = input.readLine();

            }

            mapCfgFile.close();

            // load description (if applicable)

            if (isMission)

            {

                QSettings descSettings(QString("physfs://Maps/%1/desc.txt").arg(map), QSettings::IniFormat);

                desc = descSettings.value(locale, QString()).toString().replace("|", "\n").replace("\\,", ",");

            }

            // detect if map is dlc

            QString mapDir = PHYSFS_getRealDir(QString("Maps/%1/map.cfg").arg(map).toLocal8Bit().data());

            dlc = !mapDir.startsWith(datadir->absolutePath());

            // let's use some semi-sane hedgehog limit, rather than none

            if (limit == 0)

                limit = 18;

            // the default scheme/weaponset for missions.

            // if empty we assume the map sets these internally -> locked

            if (isMission)

            {

                if (scheme.isEmpty())

                    scheme = "locked";

                else

                    scheme.replace("_", " ");

                if (weapons.isEmpty())

                    weapons = "locked";

                else

                    weapons.replace("_", " ");

            }

            // caption

            caption = map;

            // we know everything there is about the map, let's get am item for it

            QStandardItem * item = MapModel::infoToItem(

                QIcon(), caption, type, map, theme, limit, scheme, weapons, desc, dlc);

            // append item to the list

            mapList.append(item);

        }

    }

    // Create column-index lookup table

    m_mapIndexes.clear();

    int count = mapList.size();

    for (int i = 0; i < count; i++)

    {

        QStandardItem * si = mapList.at(i);

        QVariant v = si->data(Qt::UserRole + 1);

        if (v.canConvert<MapInfo>())

            m_mapIndexes.insert(v.value<MapInfo>().name, i);

    }

    QStandardItemModel::appendColumn(mapList);

    endResetModel();

    return true;

}

bool MapModel::mapExists(const QString & map)

{

    return findMap(map) >= 0;

}

int MapModel::findMap(const QString & map)

{

    loadMaps();

    return m_mapIndexes.value(map, -1);

}

QStandardItem * MapModel::getMap(const QString & map)

{

    int loc = findMap(map);

    if (loc < 0) return NULL;

    return item(loc);

}

QStandardItem * MapModel::infoToItem(

    const QIcon & icon,

    const QString caption,

    MapType type,

    QString name,

    QString theme,

    quint32 limit,

    QString scheme,

    QString weapons,

    QString desc,

    bool dlc)

{

    QStandardItem * item = new QStandardItem(icon, (dlc ? "*" : "") + caption);

    MapInfo mapInfo;

    QVariant qvar(QVariant::UserType);

    mapInfo.type = type;

    mapInfo.name = name;

    mapInfo.theme = theme;

    mapInfo.limit = limit;

    mapInfo.scheme = scheme;

    mapInfo.weapons = weapons;

    mapInfo.desc = desc.isEmpty() ? tr("No description available.") : desc;

    mapInfo.dlc = dlc;

    qvar.setValue(mapInfo);

    item->setData(qvar, Qt::UserRole + 1);

    return item;

}