/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2006-2008 Ulyanov Igor <iulyanov@gmail.com>

 * Copyright (c) 2009 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include <QDebug>

#include <QInputDialog>

#include <QCryptographicHash>

#include "hwconsts.h"

#include "newnetclient.h"

#include "proto.h"

#include "gameuiconfig.h"

#include "game.h"

#include "gamecfgwidget.h"

#include "teamselect.h"

#include "misc.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)

{

// socket stuff

	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)));

// config stuff

	connect(this, SIGNAL(paramChanged(const QString &, const QStringList &)), pGameCFGWidget, SLOT(setParam(const QString &, const QStringList &)));

	connect(pGameCFGWidget, SIGNAL(paramChanged(const QString &, const QStringList &)), this, SLOT(onParamChanged(const QString &, const QStringList &)));

	connect(this, SIGNAL(configAsked()), pGameCFGWidget, SLOT(fullNetConfig()));

}

HWNewNet::~HWNewNet()

{

	if (m_game_connected)

	{

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

		emit Disconnected();

	}

	NetSocket.flush();

}

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

{

	mynick = nick.isEmpty() ? QLineEdit::tr("unnamed") : 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_ROOM%1%2").arg(delimeter).arg(room));

	isChief = true;

}

void HWNewNet::JoinRoom(const QString & room)

{

	if(netClientState != 2)

	{

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

		return;

	}

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

	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 +

	     team.Voicepack + delimeter +

		 team.Flag + 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("EM%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());

		if (s.endsWith('\n')) s.chop(1);

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

			ParseCmd(cmdbuf);

			cmdbuf.clear();

		} else

			cmdbuf << s;

	}

}

void HWNewNet::OnConnect()

{

}

void HWNewNet::OnDisconnect()

{

	if(m_game_connected) emit Disconnected();

	m_game_connected = false;

}

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

{

	emit Disconnected();

	switch (socketError) {

		case QAbstractSocket::RemoteHostClosedError:

			break;

		case QAbstractSocket::HostNotFoundError:

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

			break;

		case QAbstractSocket::ConnectionRefusedError:

			emit showMessage(tr("Connection refused"));

			break;

		default:

			emit showMessage(NetSocket.errorString());

		}

}

void HWNewNet::ParseCmd(const QStringList & lst)

{

//	qDebug() << "Server: " << lst;

	if(!lst.size())

	{

		qWarning("Net client: Bad message");

		return;

	}

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

	{

		mynick = lst[1];

		return ;

	}

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

		return ;

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

		if (lst.size() == 2)

			emit showMessage("Error: " + lst[1]);

		else

			emit showMessage("Unknown error");

		return;

	}

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

		if (lst.size() == 2)

			emit showMessage("Warning: " + lst[1]);

		else

			emit showMessage("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 adminAccess(false);

		return;

	}

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

		if (lst.size() > 1)

			RawSendNet(QString("PONG%1%2").arg(delimeter).arg(lst[1]));

		else

			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") {

		if(lst.size() < 3)

		{

			qWarning("Net: Empty CHAT message");

			return;

		}

		if (netClientState == 2)

			emit chatStringLobby(HWProto::formatChatMsg(lst[1], lst[2]));

		else

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

		return;

	}

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

		if(lst.size() < 5)

		{

			qWarning("Net: Malformed INFO message");

			return;

		}

		QStringList tmp = lst;

		tmp.removeFirst();

		if (netClientState == 2)

			emit chatStringLobby(tmp.join("\n").prepend('\x01'));

		else

			emit chatStringFromNet(tmp.join("\n").prepend('\x01'));

		return;

	}

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

		if(lst.size() < 2)

		{

			qWarning("Net: Malformed READY message");

			return;

		}

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

		{

			if (lst[i] == mynick)

				emit setMyReadyStatus(true);

			emit setReadyStatus(lst[i], true);

		}

		return;

	}

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

		if(lst.size() < 2)

		{

			qWarning("Net: Malformed NOT_READY message");

			return;

		}

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

		{

			if (lst[i] == mynick)

				emit setMyReadyStatus(false);

			emit setReadyStatus(lst[i], false);

		}

		return;

	}

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

		if(lst.size() != 24)

		{

			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]));

		return;

	}

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

		netClientState = 2;

		emit showMessage(HWNewNet::tr("Room destroyed"));

		emit LeftRoom();

		return;

	}

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

		netClientState = 2;

		emit showMessage(HWNewNet::tr("You got kicked"));

		emit LeftRoom();

		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();

				emit roomMaster(isChief);

				if (isChief)

					emit configAsked();

			}

			emit nickAdded(lst[i], isChief && (lst[i] != mynick));

            emit chatStringFromNet(tr("%1 *** %2 has joined the room").arg('\x03').arg(lst[i]));

		}

		return;

	}

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

		if(lst.size() < 2)

		{

			qWarning("Net: Bad JOINED message");

			return;

		}

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

		{

			if (lst[i] == mynick)

			{

				netClientState = 2;

				RawSendNet(QString("LIST"));

				emit Connected();

			}

			emit nickAddedLobby(lst[i], false);

			emit chatStringLobby(tr("%1 *** %2 has joined").arg('\x03').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(tr("%1 *** %2 has left").arg('\x03').arg(lst[1]));

		else

			emit chatStringFromNet(tr("%1 *** %2 has left (%3)").arg('\x03').arg(lst[1], lst[2]));

		return;

	}

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

		if(lst.size() < 2)

		{

			qWarning("Net: Bad ROOM message");

			return;

		}

		RawSendNet(QString("LIST"));

		return;

	}

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

		if(lst.size() < 2)

		{

			qWarning("Net: Bad LOBBY:LEFT message");

			return;

		}

		emit nickRemovedLobby(lst[1]);

		if (lst.size() < 3)

			emit chatStringLobby(tr("%1 *** %2 has left").arg('\x03').arg(lst[1]));

		else

			emit chatStringLobby(tr("%1 *** %2 has left (%3)").arg('\x03').arg(lst[1], lst[2]));

		return;

	}

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

		netClientState = 5;

		emit AskForRunGame();

		return;

	}

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

        int passLength = config->value("net/passwordlength", 0).toInt();

        QString hash = config->value("net/passwordhash", "").toString();

		QString password = QInputDialog::getText(0, tr("Password"), tr("Your nickname %1 is\nregistered on Hedgewars.org\nPlease provide your password\nor pick another nickname:").arg(mynick), QLineEdit::Password, passLength==0?NULL:QString(passLength,'\0'));

        if (!passLength || password!=QString(passLength, '\0')) {

            hash = QCryptographicHash::hash(password.toLatin1(), QCryptographicHash::Md5).toHex();

            config->setValue("net/passwordhash", hash);

            config->setValue("net/passwordlength", password.size());

        }

		RawSendNet(QString("PASSWORD%1%2").arg(delimeter).arg(hash));

		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] == "CFG") {

		if(lst.size() < 3)

		{

			qWarning("Net: Bad CFG message");

			return;

		}

		QStringList tmp = lst;

		tmp.removeFirst();

		tmp.removeFirst();

		if (lst[1] == "SCHEME")

			emit netSchemeConfig(tmp);