/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2006-2008 Ulyanov Igor <iulyanov@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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include <QMessageBox>

#include <QDebug>

#include "hwconsts.h"

#include "newnetclient.h"

#include "proto.h"

#include "gameuiconfig.h"

#include "game.h"

#include "gamecfgwidget.h"

#include "teamselect.h"

char delimeter='\n';

HWNewNet::HWNewNet(GameUIConfig * config, GameCFGWidget* pGameCFGWidget, TeamSelWidget* pTeamSelWidget) :

  config(config),

  m_pGameCFGWidget(pGameCFGWidget),

  m_pTeamSelWidget(pTeamSelWidget),

  isChief(false),

  m_game_connected(false),

  loginStep(0),

  netClientState(0)

{

	connect(&NetSocket, SIGNAL(readyRead()), this, SLOT(ClientRead()));

	connect(&NetSocket, SIGNAL(connected()), this, SLOT(OnConnect()));

	connect(&NetSocket, SIGNAL(disconnected()), this, SLOT(OnDisconnect()));

	connect(&NetSocket, SIGNAL(error(QAbstractSocket::SocketError)), this,

			SLOT(displayError(QAbstractSocket::SocketError)));

}

HWNewNet::~HWNewNet()

{

	if (m_game_connected)

		RawSendNet(QString("QUIT%1%2").arg(delimeter).arg("User quit"));

	NetSocket.flush();

}

void HWNewNet::Connect(const QString & hostName, quint16 port, const QString & nick)

{

	mynick = nick;

	NetSocket.connectToHost(hostName, port);

}

void HWNewNet::Disconnect()

{

	if (m_game_connected)

		RawSendNet(QString("QUIT%1%2").arg(delimeter).arg("User quit"));

	m_game_connected = false;

	NetSocket.disconnectFromHost();

}

void HWNewNet::CreateRoom(const QString & room)

{

	if(netClientState != 2)

	{

		qWarning("Illegal try to create room!");

		return;

	}

	RawSendNet(QString("CREATE%1%2").arg(delimeter).arg(room));

	m_pGameCFGWidget->setEnabled(true);

	m_pTeamSelWidget->setInteractivity(true);

	isChief = true;

}

void HWNewNet::JoinRoom(const QString & room)

{

	if(netClientState != 2)

	{

		qWarning("Illegal try to join room!");

		return;

	}

	loginStep++;

	RawSendNet(QString("JOIN%1%2").arg(delimeter).arg(room));

	m_pGameCFGWidget->setEnabled(false);

	m_pTeamSelWidget->setInteractivity(false);

	isChief = false;

}

void HWNewNet::AddTeam(const HWTeam & team)

{

	QString cmd = QString("ADD_TEAM") + delimeter +

	     team.TeamName + delimeter +

	     team.teamColor.name() + delimeter +

	     team.Grave + delimeter +

	     team.Fort + delimeter +

	     QString::number(team.difficulty);

	for(int i = 0; i < 8; ++i)

	{

		cmd.append(delimeter);

		cmd.append(team.HHName[i]);

		cmd.append(delimeter);

		cmd.append(team.HHHat[i]);

	}

	RawSendNet(cmd);

}

void HWNewNet::RemoveTeam(const HWTeam & team)

{

	RawSendNet(QString("REMOVE_TEAM") + delimeter + team.TeamName);

}

void HWNewNet::ToggleReady()

{

  RawSendNet(QString("TOGGLE_READY"));

}

void HWNewNet::SendNet(const QByteArray & buf)

{

  QString msg = QString(buf.toBase64());

  RawSendNet(QString("GAMEMSG%1%2").arg(delimeter).arg(msg));

}

void HWNewNet::RawSendNet(const QString & str)

{

  RawSendNet(str.toUtf8());

}

void HWNewNet::RawSendNet(const QByteArray & buf)

{

	//qDebug() << "Client: " << QString(buf).split("\n");

	NetSocket.write(buf);

	NetSocket.write("\n\n", 2);

}

void HWNewNet::ClientRead()

{

	while (NetSocket.canReadLine()) {

		QString s = QString::fromUtf8(NetSocket.readLine().trimmed());

		if (s.size() == 0) {

			ParseCmd(cmdbuf);

			cmdbuf.clear();

		} else

			cmdbuf << s;

	}

}

void HWNewNet::OnConnect()

{

}

void HWNewNet::OnDisconnect()

{

  //emit ChangeInTeams(QStringList());

  if(m_game_connected) emit Disconnected();

  m_game_connected = false;

}

void HWNewNet::displayError(QAbstractSocket::SocketError socketError)

{

	switch (socketError) {

		case QAbstractSocket::RemoteHostClosedError:

			break;

		case QAbstractSocket::HostNotFoundError:

			QMessageBox::information(0, tr("Error"),

					tr("The host was not found. Please check the host name and port settings."));

			break;

		case QAbstractSocket::ConnectionRefusedError:

			QMessageBox::information(0, tr("Error"),

					tr("Connection refused"));

			break;

		default:

			QMessageBox::information(0, tr("Error"),

					NetSocket.errorString());

		}

}

void HWNewNet::ParseCmd(const QStringList & lst)

{

	if(!lst.size())

	{

		qWarning("Net client: Bad message");

		return;

	}

	if ((lst[0] == "NICK") || (lst[0] == "PROTO"))

	{

		loginStep++;

		if (loginStep == 2)

		{

			netClientState = 2;

			RawSendNet(QString("LIST"));

		}

		return ;

	}

	if (lst[0] == "ERROR") {

		if (lst.size() == 2)

			QMessageBox::information(0, 0, "Error: " + lst[1]);

		else

			QMessageBox::information(0, 0, "Unknown error");

		return;

	}

	if (lst[0] == "WARNING") {

		if (lst.size() == 2)

			QMessageBox::information(0, 0, "Warning: " + lst[1]);

		else

			QMessageBox::information(0, 0, "Unknown warning");

		return;

	}

	if (lst[0] == "CONNECTED") {

		RawSendNet(QString("NICK%1%2").arg(delimeter).arg(mynick));

		RawSendNet(QString("PROTO%1%2").arg(delimeter).arg(*cProtoVer));

		netClientState = 1;

		m_game_connected = true;

		emit Connected();

		return;

	}

	if (lst[0] == "PING") {

		RawSendNet(QString("PONG"));

		return;

	}

	if (lst[0] == "ROOMS") {

		QStringList tmp = lst;

		tmp.removeFirst();

		emit roomsList(tmp);

		return;

	}

	if (lst[0] == "SERVER_MESSAGE") {

		if(lst.size() < 2)

		{

			qWarning("Net: Empty SERVERMESSAGE message");

			return;

		}

		emit serverMessage(lst[1]);

		return;

	}

	if (lst[0] == "CHAT_STRING") {

		if(lst.size() < 3)

		{

			qWarning("Net: Empty CHAT_STRING message");

			return;

		}

		emit chatStringFromNet(formatChatMsg(lst[1], lst[2]));

		return;

	}

	if (lst[0] == "READY") {

		if(lst.size() != 2)

		{

			qWarning("Net: Malformed READY message");

			return;

		}

		emit setReadyStatus(lst[1], true);

		return;

	}

	if (lst[0] == "NOT_READY") {

		if(lst.size() != 2)

		{

			qWarning("Net: Malformed NOT_READY message");

			return;

		}

		emit setReadyStatus(lst[1], false);

		return;

	}

	if (lst[0] == "ADD_TEAM") {

		if(lst.size() != 21)

		{

			qWarning("Net: Bad ADDTEAM message");

			return;

		}

		QStringList tmp = lst;

		tmp.removeFirst();

		emit AddNetTeam(tmp);

		return;

	}

	if (lst[0] == "REMOVE_TEAM") {

		if(lst.size() != 2)

		{

			qWarning("Net: Bad REMOVETEAM message");

			return;

		}

		m_pTeamSelWidget->removeNetTeam(HWTeam(lst[1]));

		if (netClientState == 5) // we're in game, need to tell the engine about this

		{

			QByteArray em;

			HWProto::addStringToBuffer(em, "F" + lst[1]);

			emit FromNet(em);

		}

		return;

	}

	if(lst[0]=="JOINED") {

		if(lst.size() < 2)

		{

			qWarning("Net: Bad JOINED message");

			return;

		}

		for(int i = 1; i < lst.size(); ++i)

		{

			if (lst[i] == mynick)

			{

				netClientState = 3;

				emit EnteredGame();

				if (isChief)

					ConfigAsked();

			}

			emit nickAdded(lst[i]);

			emit chatStringFromNet(QString(tr("*** %1 joined")).arg(lst[i]));

		}

		return;

	}

	if(lst[0] == "LEFT") {

		if(lst.size() < 2)

		{

			qWarning("Net: Bad LEFT message");

			return;

		}

		emit nickRemoved(lst[1]);

		if (lst.size() < 3)

			emit chatStringFromNet(QString(tr("*** %1 left")).arg(lst[1]));

		else

			emit chatStringFromNet(QString(tr("*** %1 left (%2)")).arg(lst[1], lst[2]));

		return;

	}

	if (lst[0] == "RUN_GAME") {

		netClientState = 5;

		RunGame();

		return;

	}

	if (lst[0] == "TEAM_ACCEPTED") {

		if (lst.size() != 2)

		{

			qWarning("Net: Bad TEAM_ACCEPTED message");

			return;

		}

		m_pTeamSelWidget->changeTeamStatus(lst[1]);

		return;

	}

	if (lst[0] == "MAP") {

		if (lst.size() != 2)

		{

			qWarning("Net: Bad MAP message");

			return;

		}

		emit mapChanged(lst[1]);

		return;

	}

	if (lst[0] == "CONFIG_PARAM") {

		if(lst.size() < 3)

		{

			qWarning("Net: Bad CONFIG_PARAM message");

			return;

		}

		if (lst[1] == "SEED") {

			emit seedChanged(lst[2]);

			return;

		}

		if (lst[1] == "THEME") {

			emit themeChanged(lst[2]);

			return;

		}

		if (lst[1] == "HEALTH") {

			emit initHealthChanged(lst[2].toUInt());

			return;

		}

		if (lst[1] == "TURNTIME") {

			emit turnTimeChanged(lst[2].toUInt());

			return;

		}

		if (lst[1] == "FORTSMODE") {

			emit fortsModeChanged(lst[2].toInt() != 0);

			return;

		}

		if (lst[1] == "DIVIDETEAMS") {

			emit teamsDivideChanged(lst[2].toInt() != 0);

			return;

		}

		if (lst[1] == "SOLIDLAND") {

			emit solidChanged(lst[2].toInt() != 0);

			return;

		}

		if (lst[1] == "AMMO") {

			if(lst.size() < 4) return;

			emit ammoChanged(lst[3], lst[2]);

			return;

		}

		qWarning() << "Net: Unknown 'CONFIG_PARAM' message:" << lst;

		return;

	}

	if (lst[0] == "HH_NUM") {

		if (lst.size() != 3)

		{

			qWarning("Net: Bad TEAM_ACCEPTED message");

			return;

		}

		HWTeam tmptm(lst[1]);

		tmptm.numHedgehogs = lst[2].toUInt();

		emit hhnumChanged(tmptm);

		return;

	}

	if (lst[0] == "TEAM_COLOR") {

		if (lst.size() != 3)

		{

			qWarning("Net: Bad TEAM_COLOR message");

			return;

		}

		HWTeam tmptm(lst[1]);

		tmptm.teamColor = QColor(lst[2]);

		emit teamColorChanged(tmptm);

		return;

	}

	if (lst[0] == "GAMEMSG") {

		if(lst.size() < 2)

		{

			qWarning("Net: Bad GAMEMSG message");

			return;

		}

		for(int i = 1; i < lst.size(); ++i)

		{

			QByteArray em = QByteArray::fromBase64(lst[i].toAscii());

			emit FromNet(em);

		}

		return;

	}

	if (lst[0] == "BYE") {

		if (lst.size() < 2)

		{

			qWarning("Net: Bad BYE message");

			return;

		}

		emit showMessage(HWNewNet::tr("Quit reason: ") + lst[1]);

		return;

	}

	qWarning() << "Net: Unknown message:" << lst;

}

void HWNewNet::ConfigAsked()

{

	QString map = m_pGameCFGWidget->getCurrentMap();

	if (map.size())

		onMapChanged(map);

	onSeedChanged(m_pGameCFGWidget->getCurrentSeed());

	onThemeChanged(m_pGameCFGWidget->getCurrentTheme());

	onInitHealthChanged(m_pGameCFGWidget->getInitHealth());

	onTurnTimeChanged(m_pGameCFGWidget->getTurnTime());

	onFortsModeChanged(m_pGameCFGWidget->getGameFlags() & 0x1);

	onTeamsDivideChanged(m_pGameCFGWidget->getGameFlags() & 0x10);

	onSolidChanged(m_pGameCFGWidget->getGameFlags() & 0x04);

	// always initialize with default ammo (also avoiding complicated cross-class dependencies)

	QString name = m_pGameCFGWidget->WeaponsName->currentText();

	QString ammo = m_pGameCFGWidget->WeaponsName->itemData(

			m_pGameCFGWidget->WeaponsName->currentIndex()

			).toString();

	onWeaponsNameChanged(name, ammo);