/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2009 Martin Minarik <ttsmj@pokec.sk>

 * 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 <QFile>

#include <QFileInfo>

#include <QTextStream>

#include <QStringList>

#include <QLineEdit>

#include "hwform.h"

#include "DataManager.h"

#include "namegen.h"

HWNamegen::HWNamegen() {}

QList<QStringList> HWNamegen::TypesTeamnames;

QList<QStringList> HWNamegen::TypesHatnames;

bool HWNamegen::typesAvailable = false;

void HWNamegen::teamRandomTeamName(HWTeam & team)

{

    QString newName = getRandomTeamName(-1);

    if(!newName.isNull())

        team.setName(newName);

}

void HWNamegen::teamRandomFlag(HWTeam & team, bool withDLC)

{

    team.setFlag(getRandomFlag(withDLC));

}

void HWNamegen::teamRandomVoice(HWTeam & team, bool withDLC)

{

    team.setVoicepack(getRandomVoice(withDLC));

}

void HWNamegen::teamRandomGrave(HWTeam & team, bool withDLC)

{

    team.setGrave(getRandomGrave(withDLC));

}

void HWNamegen::teamRandomFort(HWTeam & team, bool withDLC)

{

    team.setFort(getRandomFort(withDLC));

}

void HWNamegen::teamRandomEverything(HWTeam & team, const RandomTeamMode mode)

{

    // load types if not already loaded

    if (!typesAvailable)

        if (!loadTypes())

            return; // abort if loading failed

    // abort if there are no hat types

    if (TypesHatnames.size() <= 0)

        return;

    // the hat will influence which names the hogs get

    int kind = (rand()%(TypesHatnames.size()));

    // pick team name based on hat

    if (mode == HWNamegen::rtmEverything)

    {        team.setName(getRandomTeamName(kind));

        team.setGrave(getRandomGrave());

        team.setFort(getRandomFort());

        team.setFlag(getRandomFlag());

        team.setVoicepack(getRandomVoice());

    }

    QStringList dicts;

    QStringList dict;

    if ((mode == HWNamegen::rtmHogNames || mode == HWNamegen::rtmEverything) && (TypesHatnames[kind].size()) <= 0)

    {

        dicts = dictsForHat(team.hedgehog(0).Hat);

        dict  = dictContents(dicts[rand()%(dicts.size())]);

    }

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

    {

        if (mode == HWNamegen::rtmEverything && (TypesHatnames[kind].size()) > 0)

        {

            HWHog hh = team.hedgehog(i);

            hh.Hat = TypesHatnames[kind][rand()%(TypesHatnames[kind].size())];

            team.setHedgehog(i,hh);

        }

        // there is a chance that this hog has the same hat as the previous one

        // let's reuse the hat-specific dict in this case

        if ( (mode == HWNamegen::rtmHogNames || mode == HWNamegen::rtmEverything) && ((i == 0) || (team.hedgehog(i).Hat != team.hedgehog(i-1).Hat)))

        {

            dicts = dictsForHat(team.hedgehog(i).Hat);

            dict  = dictContents(dicts[rand()%(dicts.size())]);

        }

        // give each hedgehog a random name

        if (mode == HWNamegen::rtmHogNames || mode == HWNamegen::rtmEverything)

            HWNamegen::teamRandomHogName(team,i,dict);

    }

}

// Set random hats for entire team

void HWNamegen::teamRandomHats(HWTeam & team, bool withDLC)

{

    // 50% chance that all hogs are set to the same hat.

    // 50% chance that each hog gets a random head individually.

    bool sameHogs = (rand()%2) == 0;

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

    {

        HWHog hh = team.hedgehog(i);

        if (sameHogs and i > 0)

            hh.Hat = team.hedgehog(i-1).Hat;

        else

            hh.Hat = getRandomHat(withDLC);

        team.setHedgehog(i, hh);

    }

}

void HWNamegen::teamRandomHat(HWTeam & team, const int HedgehogNumber, bool withDLC)

{

    HWHog hh = team.hedgehog(HedgehogNumber);

    hh.Hat = getRandomHat(withDLC);

    team.setHedgehog(HedgehogNumber, hh);

}

void HWNamegen::teamRandomHat(HWTeam & team, const int HedgehogNumber, const QStringList & dict)

{

    HWHog hh = team.hedgehog(HedgehogNumber);

    hh.Name = dict[rand()%(dict.size())];

    team.setHedgehog(HedgehogNumber, hh);

}

void HWNamegen::teamRandomHogName(HWTeam & team, const int HedgehogNumber)

{

    QStringList dicts = dictsForHat(team.hedgehog(HedgehogNumber).Hat);

    QStringList dict = dictContents(dicts[rand()%(dicts.size())]);

    teamRandomHogName(team, HedgehogNumber, dict);

}

void HWNamegen::teamRandomHogName(HWTeam & team, const int HedgehogNumber, const QStringList & dict)

{

    QStringList namesDict = dict;

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

    {

        namesDict.removeOne(team.hedgehog(i).Name);

    }

    // if our dict doesn't have any new names we'll have to use duplicates

    if (namesDict.size() < 1)

        namesDict = dict;

    HWHog hh = team.hedgehog(HedgehogNumber);

    hh.Name = namesDict[rand()%(namesDict.size())];

    team.setHedgehog(HedgehogNumber, hh);

}

QStringList HWNamegen::dictContents(const QString filename)

{

    QStringList list;

    // find .txt to load the names from

    QFile file(QString("physfs://Names/%1.txt").arg(filename));

    if (file.open(QIODevice::ReadOnly | QIODevice::Text))

    {

        QTextStream in(&file);

        QString line;

        do

        {

            line = in.readLine();

            if(!line.isEmpty())

                list.append(line);

        } while (!line.isNull());

    }

    if (list.size() == 0)

        list.append(filename);

    return list;

}

QStringList HWNamegen::dictsForHat(const QString hatname)

{

    QStringList list;

    // Find and check .cfg to load the dicts from

    QString path = QString("physfs://Names/%1.cfg").arg(hatname);

    QFileInfo check_file(path);

    // Note: The .cfg file is optional; a fallback mechanism is in place (see below)

    // Check if file exists to prevent PhysFS from complaining in console so much

    if (check_file.exists() && check_file.isFile())

    {

        QFile file(path);

        if (file.open(QIODevice::ReadOnly | QIODevice::Text))

        {

            QTextStream in(&file);

            QString line;

            do

            {

                line = in.readLine();

                if(!line.isEmpty())

                    list.append(line);

            } while (!line.isNull());

        }

    }

    // Use Data/Names/generic.cfg by default

    if (list.size() == 0)

        list.append(QString("generic"));

    return list;

}

// loades types from ini files. returns true on success.

bool HWNamegen::loadTypes()

{

    typesAvailable = false;

    // find .ini to load the names from

    QFile * file = new QFile(QString("physfs://Names/types.ini"));

    if (file->exists() && file->open(QIODevice::ReadOnly | QIODevice::Text))

    {

        int counter = 0; //counter starts with 0 (teamnames mode)

        TypesTeamnames.append(QStringList());

        TypesHatnames.append(QStringList());

        QTextStream in(file);

        while (!in.atEnd())

        {

            QString line = in.readLine();

            if (line == QString("#####"))

            {

                counter++; //toggle mode (teamnames || hats)

                if ((counter%2) == 0)

                {

                    TypesTeamnames.append(QStringList());

                    TypesHatnames.append(QStringList());

                }

            }

            else if ((line == QString("*****")) || (line == QString("*END*")))

            {

                typesAvailable = true;

                return true; // bye bye

            }

            else

            {

                if ((counter%2) == 0)

                {

                    // even => teamnames mode

                    TypesTeamnames[(counter/2)].append(line);

                }

                else

                {

                    // odd => hats mode

                    TypesHatnames[((counter-1)/2)].append(line);

                }

            }

        }

        typesAvailable = true;

    }

    // this QFile isn't needed any further

    delete file;

    return typesAvailable;

}

/* Generates a random team name.

kind: Use to select a team name out of a group (types.ini).

Use a negative value if you don't care.

This function may return a null QString on error(this should never happen). */

QString HWNamegen::getRandomTeamName(int kind)

{

    // load types if not already loaded

    if (!typesAvailable)

        if (!loadTypes())

            return QString(); // abort if loading failed

    // abort if there are no hat types

    if (TypesHatnames.size() <= 0)

        return QString();

    if(kind < 0)

        kind = (rand()%(TypesHatnames.size()));

    if (TypesTeamnames[kind].size() > 0)

        return TypesTeamnames[kind][rand()%(TypesTeamnames[kind].size())];

    else

        return QString();

}

QString HWNamegen::getRandomHat(bool withDLC)

{

    QStringList Hats;

    // list all available hats

    Hats.append(DataManager::instance().entryList(

                      "Graphics/Hats",

                      QDir::Files,

                      QStringList("*.png"),

                      withDLC

                  ).replaceInStrings(QRegExp("\\.png$"), "")

                 );

    if(Hats.size()==0)

    {

        // TODO do some serious error handling

        return "Error";

    }

    // pick a random hat

    return Hats[rand()%(Hats.size())];

}

QString HWNamegen::getRandomGrave(bool withDLC)

{

    QStringList Graves;

    //list all available Graves

    Graves.append(DataManager::instance().entryList(

                      "Graphics/Graves",

                      QDir::Files,

                      QStringList("*.png"),

                      withDLC

                  ).replaceInStrings(QRegExp("\\.png$"), "")

                 );

    if(Graves.size()==0)

    {

        // TODO do some serious error handling

        return "Error";

    }

    //pick a random grave

    return Graves[rand()%(Graves.size())];

}

QString HWNamegen::getRandomFlag(bool withDLC)

{

    QStringList Flags;

    //list all available flags

    Flags.append(DataManager::instance().entryList(

                      "Graphics/Flags",

                      QDir::Files,

                      QStringList("*.png"),

                      withDLC

                  ).replaceInStrings(QRegExp("\\.png$"), "")

                 );

    //remove internal flags

    Flags.removeAll("cpu");

    Flags.removeAll("cpu_plain");

    if(Flags.size()==0)

    {

        // TODO do some serious error handling

        return "Error";

    }

    //pick a random flag

    return Flags[rand()%(Flags.size())];

}

QString HWNamegen::getRandomFort(bool withDLC)

{

    QStringList Forts;

    //list all available Forts

    Forts.append(DataManager::instance().entryList(

                     "Forts",

                     QDir::Files,

                     QStringList("*L.png"),

                     withDLC

                 ).replaceInStrings(QRegExp("L\\.png$"), "")

                );

    if(Forts.size()==0)

    {

        // TODO do some serious error handling

        return "Error";

    }

    //pick a random fort

    return Forts[rand()%(Forts.size())];

}

QString HWNamegen::getRandomVoice(bool withDLC)

{

    QStringList Voices;

    //list all available voices 

    Voices.append(DataManager::instance().entryList(

                     "Sounds/voices",

                     QDir::Dirs | QDir::NoDotAndDotDot,

                     QStringList("*"),

                     withDLC));

    if(Voices.size()==0)

    {

        // TODO do some serious error handling

        return "Error";

    }

    //pick a random voice

    return Voices[rand()%(Voices.size())];

}