/*

 * 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

 */

#include "campaign.h"

#include "hwconsts.h"

#include "DataManager.h"

#include <QSettings>

#include <QObject>

#include <QLocale>

QSettings* getCampTeamFile(QString & campaignName, QString & teamName)

{

    QSettings* teamfile = new QSettings(cfgdir->absolutePath() + "/Teams/" + teamName + ".hwt", QSettings::IniFormat, 0);

    teamfile->setIniCodec("UTF-8");

    // if entry not found check if there is written without _

    // if then is found rename it to use _

    QString spaceCampName = campaignName;

    spaceCampName = spaceCampName.replace(QString("_"),QString(" "));

    if (!teamfile->childGroups().contains("Campaign " + campaignName) &&

            teamfile->childGroups().contains("Campaign " + spaceCampName)){

        teamfile->beginGroup("Campaign " + spaceCampName);

        QStringList keys = teamfile->childKeys();

        teamfile->endGroup();

        for (int i=0;i<keys.size();i++) {

            QVariant value = teamfile->value("Campaign " + spaceCampName + "/" + keys[i]);

            teamfile->setValue("Campaign " + campaignName + "/" + keys[i], value);

        }

        teamfile->remove("Campaign " + spaceCampName);

    }

    return teamfile;

}

/**

    Returns true if the specified mission has been completed

    campaignName: Name of the campaign in question

    missionInList: QComboBox index of the mission as selected in the mission widget

    teamName: Name of the playing team

*/

bool isCampMissionWon(QString & campaignName, int missionInList, QString & teamName)

{

    QSettings* teamfile = getCampTeamFile(campaignName, teamName);

    int progress = teamfile->value("Campaign " + campaignName + "/Progress", 0).toInt();

    int unlockedMissions = teamfile->value("Campaign " + campaignName + "/UnlockedMissions", 0).toInt();

    QSettings campfile("physfs://Missions/Campaign/" + campaignName + "/campaign.ini", QSettings::IniFormat, 0);

    campfile.setIniCodec("UTF-8");

    int totalMissions = campfile.value("MissionNum", 1).toInt();

    // The CowardMode cheat unlocks all campaign missions.

    // Added to make it easier to test campaigns.

    bool cheat = teamfile->value("Team/CowardMode", false).toBool();

    if(progress>0 && unlockedMissions==0)

    {

        int maxMission;

        if(cheat)

            maxMission = totalMissions - (missionInList + 1);

        else

            maxMission = progress - missionInList;

        return (progress > maxMission) || (progress >= totalMissions);

    }

    else if(unlockedMissions>0)

    {

        int fileMissionId = missionInList + 1;

        int actualMissionId;

        if(cheat)

            actualMissionId = totalMissions - missionInList;

        else

            actualMissionId = teamfile->value(QString("Campaign %1/Mission%2").arg(campaignName, QString::number(fileMissionId)), false).toInt();

        return teamfile->value(QString("Campaign %1/Mission%2Won").arg(campaignName, QString::number(actualMissionId)), false).toBool();

    }

    else

        return false;

}

/** Returns true if the campaign has been won by the team */

bool isCampWon(QString & campaignName, QString & teamName)

{

    QSettings* teamfile = getCampTeamFile(campaignName, teamName);

    bool won = teamfile->value("Campaign " + campaignName + "/Won", false).toBool();

    return won;

}

QSettings* getCampMetaInfo()

{

    DataManager & dataMgr = DataManager::instance();

    // get locale

    QSettings settings(dataMgr.settingsFileName(),

    QSettings::IniFormat);

    QString loc = QLocale().name();

    QString campaignDescFile = QString("physfs://Locale/campaigns_" + loc + ".txt");

    // if file is non-existant try with language only

    if (!QFile::exists(campaignDescFile))

    campaignDescFile = QString("physfs://Locale/campaigns_" + loc.remove(QRegExp("_.*$")) + ".txt");

    // fallback if file for current locale is non-existant

    if (!QFile::exists(campaignDescFile))

        campaignDescFile = QString("physfs://Locale/campaigns_en.txt");

    QSettings* m_info = new QSettings(campaignDescFile, QSettings::IniFormat, 0);

    m_info->setIniCodec("UTF-8");

    return m_info;

}

/** Returns the localized campaign name */

QString getRealCampName(const QString & campaignName)

{

    QString campaignNameSpaces = QString(campaignName).replace(QString("_"), QString(" "));

    return getCampMetaInfo()->value(campaignName+".name", campaignNameSpaces).toString();

}

QList<MissionInfo> getCampMissionList(QString & campaignName, QString & teamName)

{

    QList<MissionInfo> missionInfoList;

    QSettings* teamfile = getCampTeamFile(campaignName, teamName);

    int progress = teamfile->value("Campaign " + campaignName + "/Progress", 0).toInt();

    int unlockedMissions = teamfile->value("Campaign " + campaignName + "/UnlockedMissions", 0).toInt();

    bool cheat = teamfile->value("Team/CowardMode", false).toBool();

    QSettings campfile("physfs://Missions/Campaign/" + campaignName + "/campaign.ini", QSettings::IniFormat, 0);

    campfile.setIniCodec("UTF-8");

    QSettings* m_info = getCampMetaInfo();

    if(cheat)

    {

        progress = campfile.value("MissionNum", 1).toInt();

    }

    if((progress >= 0 && unlockedMissions == 0) || cheat)

    {

        for(unsigned int i = progress + 1; i > 0; i--)

        {

            MissionInfo missionInfo;

            QString script = campfile.value(QString("Mission %1/Script").arg(i)).toString();

            if(!script.isNull()) {

                missionInfo.script = script;

                missionInfo.name = campfile.value(QString("Mission %1/Name").arg(i)).toString();

                QString scriptPrefix = campaignName+"-"+ script.replace(QString(".lua"),QString(""));

                missionInfo.realName = m_info->value(scriptPrefix+".name", missionInfo.name).toString();

                missionInfo.description = m_info->value(scriptPrefix + ".desc",

                                            QObject::tr("No description available")).toString();

                QString image = campfile.value(QString("Mission %1/Script").arg(i)).toString().replace(QString(".lua"),QString("@2x.png"));

                missionInfo.image = "physfs://Graphics/Missions/Campaign/"+campaignName+"/"+image;

                if (!QFile::exists(missionInfo.image))

                    missionInfo.image = ":/res/CampaignDefault.png";

                missionInfoList.append(missionInfo);

            }

        }

    }

    else if(unlockedMissions>0)

    {

        for(int i=1;i<=unlockedMissions;i++)

        {

            QString missionNum = QString("%1").arg(i);

            int missionNumber = teamfile->value("Campaign " + campaignName + "/Mission"+missionNum, -1).toInt();

            MissionInfo missionInfo;

            QString script = campfile.value(QString("Mission %1/Script").arg(missionNumber)).toString();

            missionInfo.script = script;

            missionInfo.name = campfile.value(QString("Mission %1/Name").arg(missionNumber)).toString();

            QString scriptPrefix = campaignName+"-"+ script.replace(QString(".lua"),QString(""));

            missionInfo.realName = m_info->value(scriptPrefix+".name", missionInfo.name).toString();

            missionInfo.description = m_info->value(scriptPrefix + ".desc",

                                            QObject::tr("No description available")).toString();

            QString image = campfile.value(QString("Mission %1/Script").arg(missionNumber)).toString().replace(QString(".lua"),QString("@2x.png"));

            missionInfo.image = "physfs://Graphics/Missions/Campaign/"+campaignName+"/"+image;

            if (!QFile::exists(missionInfo.image))

                missionInfo.image = ":/res/CampaignDefault.png";

            missionInfoList.append(missionInfo);

        }

    }

    return missionInfoList;

}