/*

 * 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 <QApplication>

#include <QString>

#include <QCheckBox>

#include <QByteArray>

#include <QUuid>

#include <QColor>

#include <QStringListModel>

#include <QTextStream>

#include <utility>

#include "hwform.h"

#include "ui/page/pageoptions.h"

#include "ui/page/pagetraining.h"

#include "ui/page/pagecampaign.h"

#include "game.h"

#include "hwconsts.h"

#include "gameuiconfig.h"

#include "gamecfgwidget.h"

#include "teamselect.h"

#include "proto.h"

#include "binds.h"

#include "campaign.h"

#include <QTextStream>

#include "ThemeModel.h"

// last game info

QList<QVariant> lastGameStartArgs = QList<QVariant>();

GameType lastGameType = gtNone;

GameCFGWidget * lastGameCfg = NULL;

QString lastGameAmmo = NULL;

TeamSelWidget * lastGameTeamSel = NULL;

QString trainingName, trainingScript, trainingTeam, campaign, campaignScript, campaignTeam; // TODO: Cleaner solution?

HWGame::HWGame(GameUIConfig * config, GameCFGWidget * gamecfg, QString ammo, TeamSelWidget* pTeamSelWidget) :

    TCPBase(true, !config->language().isEmpty(), 0),

    ammostr(ammo),

    m_pTeamSelWidget(pTeamSelWidget)

{

    this->config = config;

    this->gamecfg = gamecfg;

    netSuspend = false;

    lastGameCfg = gamecfg;

    lastGameAmmo = ammo;

    lastGameTeamSel = pTeamSelWidget;

    gameState = gsNotStarted;

    gameType = gtNone;

}

HWGame::~HWGame()

{

    SetGameState(gsDestroyed);

}

void HWGame::onClientDisconnect()

{

    switch (gameType)

    {

        case gtDemo:

            // for video recording we need demo anyway

            emit HaveRecord(rtNeither, demo);

            break;

        case gtNet:

            emit HaveRecord(rtDemo, demo);

            break;

        default:

            if (gameState == gsInterrupted || gameState == gsHalted)

                emit HaveRecord(rtSave, demo);

            else if (gameState == gsFinished)

                emit HaveRecord(rtDemo, demo);

            else

                emit HaveRecord(rtNeither, demo);

    }

    SetGameState(gsStopped);

}

void HWGame::commonConfig()

{

    QByteArray buf;

    QString gt;

    switch (gameType)

    {

        case gtDemo:

            gt = "TD";

            break;

        case gtNet:

            gt = "TN";

            break;

        default:

            gt = "TL";

    }

    HWProto::addStringToBuffer(buf, gt);

    buf += gamecfg->getFullConfig();

    if (m_pTeamSelWidget)

    {

        foreach(HWTeam team, m_pTeamSelWidget->getPlayingTeams())

        {

            HWProto::addStringToBuffer(buf, QString("eammloadt %1").arg(ammostr.mid(0, cAmmoNumber)));

            HWProto::addStringToBuffer(buf, QString("eammprob %1").arg(ammostr.mid(cAmmoNumber, cAmmoNumber)));

            HWProto::addStringToBuffer(buf, QString("eammdelay %1").arg(ammostr.mid(2 * cAmmoNumber, cAmmoNumber)));

            HWProto::addStringToBuffer(buf, QString("eammreinf %1").arg(ammostr.mid(3 * cAmmoNumber, cAmmoNumber)));

            if(gamecfg->schemeData(15).toBool() || !gamecfg->schemeData(21).toBool()) HWProto::addStringToBuffer(buf, QString("eammstore"));

            HWProto::addStringListToBuffer(buf,

                                           team.teamGameConfig(gamecfg->getInitHealth()));

            ;

        }

    }

    RawSendIPC(buf);

}

void HWGame::SendConfig()

{

    commonConfig();

}

void HWGame::SendQuickConfig()

{

    /* Load and increase Quick Game experience level.

    Experience increases by 1 for each started game and maxes out

    at 20. Low experience levels will introduce a "beginner's bias" to make

    the first quick games easier and simpler. The max. possible difficulty

    increases progressively the longer you play.

    If experience is maxed out, the beginner's bias is gone and quick games

    are completely random. */

    int exp = config->quickGameExperience();

    if(exp < 20)

    {

       config->setQuickGameExperience(exp + 1);

    }

    qDebug("Starting quick game ...");

    qDebug("Quick Game experience level: %d", exp);

    // Init stuff

    QByteArray teamscfg;

    QAbstractItemModel * themeModel = DataManager::instance().themeModel()->withoutHidden();

    HWProto::addStringToBuffer(teamscfg, "TL");

    // Random seed

    HWProto::addStringToBuffer(teamscfg, "eseed " + QUuid::createUuid().toString());

    int r, minhogs, maxhogs;

    // Random map type

    r = rand() % 10000;

    if(r < 3000) { // 30%

        // Random

        r = 0;

    } else if(r < 5250) { // 22.5%

        // Maze

        if(exp <= 3)

            r = 0;

        else

            r = 1;

        // Perlin

        if(exp <= 7)

            r = 1;

        else

            r = 2;

    } else if(r < 8750) { // 12.5%

        // Image map

        r = 3;

    } else { // 12.5%

        // Forts

        r = 4;

    }

    switch(r)

    {

        // Random map

        default:

        case 0: {

            r = rand() % 3;

            if(r == 0)

            {

                // small island

                HWProto::addStringToBuffer(teamscfg, "e$template_filter 1");

                minhogs = 3;

                maxhogs = 4;

            }

            else if(r == 1 || exp <= 6)

            {

                // medium island

                HWProto::addStringToBuffer(teamscfg, "e$template_filter 2");

                minhogs = 4;

                maxhogs = 5;

            }

            else

            {

                // cave (locked at low experience because these maps can be huge)

                HWProto::addStringToBuffer(teamscfg, "e$template_filter 4");

                minhogs = 4;

                maxhogs = 6;

            }

            HWProto::addStringToBuffer(teamscfg, "e$feature_size "+QString::number(rand()%18+4));

            break;

        }

        // Maze

        case 1: {

            minhogs = 4;

            maxhogs = 6;

            HWProto::addStringToBuffer(teamscfg, "e$mapgen 1");

            HWProto::addStringToBuffer(teamscfg, "e$template_filter "+QString::number(rand()%6));

            HWProto::addStringToBuffer(teamscfg, "e$feature_size "+QString::number(rand()%16+6));

            break;

        }

        // Perlin

        case 2: {

            minhogs = 4;

            maxhogs = 6;

            HWProto::addStringToBuffer(teamscfg, "e$mapgen 2");

            HWProto::addStringToBuffer(teamscfg, "e$template_filter "+QString::number(rand()%6));

            HWProto::addStringToBuffer(teamscfg, "e$feature_size "+QString::number(rand()%18+4));

            break;

        }

        // Image map

        case 3: {

            minhogs = 4;

            maxhogs = 6;

            HWProto::addStringToBuffer(teamscfg, "e$mapgen 3");

            // Select map from hardcoded list.

            // TODO: find a more dynamic solution.

            r = rand() % cQuickGameMaps.count();

            HWProto::addStringToBuffer(teamscfg, "e$map " + cQuickGameMaps[r]);

            break;

        }

        // Forts

        case 4: {

            minhogs = 4;

            maxhogs = 6;

            HWProto::addStringToBuffer(teamscfg, "e$mapgen 4");

            HWProto::addStringToBuffer(teamscfg, "e$feature_size "+QString::number(rand()%20+1));

            break;

        }

    }

    // Theme

    HWProto::addStringToBuffer(teamscfg, QString("etheme %1")

        .arg((themeModel->rowCount() > 0) ? themeModel->index(rand() % themeModel->rowCount(), 0).data(ThemeModel::ActualNameRole).toString() : "Nature"));

    int hogs = minhogs + rand() % (maxhogs-minhogs+1);

    // Cap hog count at low experience

    if((exp <= 8) && (hogs > 5))

        hogs = 5;

    else if((exp <= 5) && (hogs > 4))

        hogs = 4;

    // Teams

    // Player team

    HWTeam team1;

    team1.setDifficulty(0);

    team1.setColor(0);

    team1.setNumHedgehogs(hogs);

    HWNamegen::teamRandomEverything(team1);

    team1.setVoicepack("Default_qau");

    // Computer team

    HWTeam team2;

    // Random difficulty.

    // Max. possible difficulty is capped at low experience levels.

    if(exp >= 15) // very easy to very hard (full range)

        r = 5 - rand() % 5;

    else if(exp >= 9) // very easy to hard

        r = 5 - rand() % 4;

    else if(exp >= 6) // very easy to medium

        r = 5 - rand() % 3;

    else if(exp >= 2) // very easy to easy

        r = 5 - rand() % 2;

    else // very easy

        r = 5;

    team2.setDifficulty(r);

    team2.setColor(1);

    team2.setNumHedgehogs(hogs);

    // Make sure the team names are not equal

    do

        HWNamegen::teamRandomEverything(team2);

    while(!team2.name().compare(team1.name()) || !team2.hedgehog(0).Hat.compare(team1.hedgehog(0).Hat));

    team2.setVoicepack("Default_qau");

    // Team play order

    r = rand() % 2;

    if(r == 0 || exp <= 4) // player plays first

    {

        HWProto::addStringListToBuffer(teamscfg, team1.teamGameConfig(100));

        HWProto::addStringListToBuffer(teamscfg, team2.teamGameConfig(100));

    }

    else // computer plays first

    {

        HWProto::addStringListToBuffer(teamscfg, team2.teamGameConfig(100));

        HWProto::addStringListToBuffer(teamscfg, team1.teamGameConfig(100));

    }

    // Ammo scheme "Default"

    // TODO: Random schemes

    HWProto::addStringToBuffer(teamscfg, QString("eammloadt %1").arg(cDefaultAmmoStore->mid(0, cAmmoNumber)));

    HWProto::addStringToBuffer(teamscfg, QString("eammprob %1").arg(cDefaultAmmoStore->mid(cAmmoNumber, cAmmoNumber)));

    HWProto::addStringToBuffer(teamscfg, QString("eammdelay %1").arg(cDefaultAmmoStore->mid(2 * cAmmoNumber, cAmmoNumber)));

    HWProto::addStringToBuffer(teamscfg, QString("eammreinf %1").arg(cDefaultAmmoStore->mid(3 * cAmmoNumber, cAmmoNumber)));

    HWProto::addStringToBuffer(teamscfg, QString("eammstore"));

    HWProto::addStringToBuffer(teamscfg, QString("eammstore"));

    RawSendIPC(teamscfg);

}

void HWGame::SendTrainingConfig()

{

    QByteArray traincfg;

    HWProto::addStringToBuffer(traincfg, "TL");

    HWTeam missionTeam = HWTeam();

    missionTeam.setName(config->Form->ui.pageTraining->CBTeam->currentText());

    missionTeam.loadFromFile();

    missionTeam.setNumHedgehogs(HEDGEHOGS_PER_TEAM);

    missionTeam.setMissionTeam(true);

    HWProto::addStringListToBuffer(traincfg, missionTeam.teamGameConfig(100));

    HWProto::addStringToBuffer(traincfg, "eseed " + QUuid::createUuid().toString());

    HWProto::addStringToBuffer(traincfg, "escript " + trainingScript);

    RawSendIPC(traincfg);

}

void HWGame::SendCampaignConfig()

{

    QByteArray campaigncfg;

    HWProto::addStringToBuffer(campaigncfg, "TL");

    HWTeam missionTeam = HWTeam();

    missionTeam.setName(config->Form->ui.pageCampaign->CBTeam->currentText());

    missionTeam.loadFromFile();

    missionTeam.setNumHedgehogs(HEDGEHOGS_PER_TEAM);

    missionTeam.setMissionTeam(true);

    HWProto::addStringListToBuffer(campaigncfg, missionTeam.teamGameConfig(100));

    HWProto::addStringToBuffer(campaigncfg, "eseed " + QUuid::createUuid().toString());

    HWProto::addStringToBuffer(campaigncfg, "escript " + campaignScript);

    RawSendIPC(campaigncfg);

}

void HWGame::SendNetConfig()

{

    commonConfig();

}

void HWGame::ParseMessage(const QByteArray & msg)

{

    switch(msg.at(1))

    {

        case '?':

        {

            SendIPC("!");

            break;

        }

        case 'C':

        {

            switch (gameType)

            {

                case gtLocal:

                {

                    SendConfig();

                    break;

                }

                case gtQLocal:

                {

                    SendQuickConfig();

                    break;

                }

                case gtNone:

                case gtSave:

                case gtDemo:

                    break;

                case gtNet:

                {

                    SendNetConfig();

                    break;

                }

                case gtTraining:

                {

                    SendTrainingConfig();

                    break;

                }

                case gtCampaign:

                {

                    SendCampaignConfig();

                    break;

                }

            }

            break;

        }

        case 'E':

        {

            int size = msg.size();

            emit ErrorMessage(

                tr("A fatal ERROR occured! The game engine had to stop.\n\n"

                "We are very sorry for the inconvenience. :-(\n\n"

                "If this keeps happening, please click the 'Feedback' button in the main menu!\n\n"

                "Last engine message:\n%1")

                .arg(QString::fromUtf8(msg.mid(2).left(size - 4))));

            return;

        }

        case 'i':

        {

            emit GameStats(msg.at(2), QString::fromUtf8(msg.mid(3)));

            break;

        }

        case 'Q':

        {

            SetGameState(gsInterrupted);

            break;

        }

        case 'q':

        {

            SetGameState(gsFinished);

            break;

        }

        case 'H':

        {

            SetGameState(gsHalted);

            break;

        }

        case 's':

        {

            int size = msg.size();

            QString msgbody = QString::fromUtf8(msg.mid(2).left(size - 4));

            emit SendChat(msgbody);

            QByteArray buf;

            HWProto::addStringToBuffer(buf, "s" + HWProto::formatChatMsg(config->netNick(), msgbody) + "\x20\x20");

            demo.append(buf);

            break;

        }

        case 'b':

        {

            int size = msg.size();

            QString msgbody = QString::fromUtf8(msg.mid(2).left(size - 4));

            emit SendTeamMessage(msgbody);

            break;

        }

        case 'V':

        {

            if (msg.at(2) == '?')

                sendCampaignVar(msg.right(msg.size() - 3));

            else if (msg.at(2) == '!')

                writeCampaignVar(msg.right(msg.size() - 3));

            break;