#include "StdInc.h"
#include "main.h"
#include "lobby_moc.h"
#include "ui_lobby_moc.h"
#include "lobbyroomrequest_moc.h"
#include "../mainwindow_moc.h"
#include "../modManager/cmodlist.h"
#include "../../lib/CConfigHandler.h"

Lobby::Lobby(QWidget *parent) :
	QWidget(parent),
	ui(new Ui::Lobby)
{
	ui->setupUi(this);
	ui->buttonReady->setEnabled(false);

	connect(&socketLobby, SIGNAL(text(QString)), this, SLOT(sysMessage(QString)));
	connect(&socketLobby, SIGNAL(receive(QString)), this, SLOT(dispatchMessage(QString)));
	connect(&socketLobby, SIGNAL(disconnect()), this, SLOT(onDisconnected()));
	
	ui->hostEdit->setText(QString::fromStdString(settings["launcher"]["lobbyUrl"].String()));
	ui->portEdit->setText(QString::number(settings["launcher"]["lobbyPort"].Integer()));
	ui->userEdit->setText(QString::fromStdString(settings["launcher"]["lobbyUsername"].String()));
}

Lobby::~Lobby()
{
	delete ui;
}

QMap<QString, QString> Lobby::buildModsMap() const
{
	QMap<QString, QString> result;
	const auto & modlist = qobject_cast<MainWindow*>(qApp->activeWindow())->getModList();
	for(auto & modname : modlist.getModList())
	{
		auto mod = modlist.getMod(modname);
		if(mod.isEnabled())
		{
			result[modname] = mod.getValue("version").toString();
		}
	}
	return result;
}

bool Lobby::isModAvailable(const QString & modName, const QString & modVersion) const
{
	const auto & modlist = qobject_cast<MainWindow*>(qApp->activeWindow())->getModList();
	if(!modlist.hasMod(modName))
		return false;

	auto mod = modlist.getMod(modName);
	return (mod.isInstalled () || mod.isAvailable()) && (mod.getValue("version") == modVersion);
}

void Lobby::serverCommand(const ServerCommand & command) try
{
	//initialize variables outside of switch block
	const QString statusPlaceholder("%1 %2\n");
	const auto & args = command.arguments;
	int amount, tagPoint;
	QString joinStr;
	switch(command.command)
	{
	case SRVERROR:
		protocolAssert(args.size());
		chatMessage("System error", args[0], true);
		if(authentificationStatus == AuthStatus::NONE)
			authentificationStatus = AuthStatus::ERROR;
		break;

	case CREATED:
		protocolAssert(args.size());
		hostSession = args[0];
		session = args[0];
		sysMessage("new session started");
		ui->buttonReady->setEnabled(true);
		break;

	case SESSIONS:
		protocolAssert(args.size());
		amount = args[0].toInt();
		protocolAssert(amount * 4 == (args.size() - 1));
		ui->sessionsTable->setRowCount(amount);

		tagPoint = 1;
		for(int i = 0; i < amount; ++i)
		{
			QTableWidgetItem * sessionNameItem = new QTableWidgetItem(args[tagPoint++]);
			ui->sessionsTable->setItem(i, 0, sessionNameItem);

			int playersJoined = args[tagPoint++].toInt();
			int playersTotal = args[tagPoint++].toInt();
			QTableWidgetItem * sessionPlayerItem = new QTableWidgetItem(QString("%1/%2").arg(playersJoined).arg(playersTotal));
			ui->sessionsTable->setItem(i, 1, sessionPlayerItem);

			QTableWidgetItem * sessionProtectedItem = new QTableWidgetItem();
			bool isPrivate = (args[tagPoint++] == "True");
			sessionProtectedItem->setData(Qt::UserRole, isPrivate);
			if(isPrivate)
				sessionProtectedItem->setIcon(QIcon("icons:room-private.png"));
			ui->sessionsTable->setItem(i, 2, sessionProtectedItem);
		}
		break;

	case JOINED:
	case KICKED:
		protocolAssert(args.size() == 2);
		joinStr = (command.command == JOINED ? "%1 joined to the session %2" : "%1 left session %2");

		if(args[1] == username)
		{
			ui->chat->clear(); //cleanup the chat
			sysMessage(joinStr.arg("you", args[0]));
			session = args[0];
			ui->stackedWidget->setCurrentWidget(command.command == JOINED ? ui->roomPage : ui->sessionsPage);
			if(command.command == KICKED)
				ui->buttonReady->setEnabled(false);
		}
		else
		{
			sysMessage(joinStr.arg(args[1], args[0]));
		}
		break;

	case MODS: {
		protocolAssert(args.size() > 0);
		amount = args[0].toInt();
		protocolAssert(amount * 2 == (args.size() - 1));

		tagPoint = 1;
		ui->modsList->clear();
		auto enabledMods = buildModsMap();
		for(int i = 0; i < amount; ++i, tagPoint += 2)
		{
			if(enabledMods.contains(args[tagPoint]))
			{
				if(enabledMods[args[tagPoint]] == args[tagPoint + 1])
					enabledMods.remove(args[tagPoint]);
				else
					ui->modsList->addItem(new QListWidgetItem(QIcon("icons:mod-update.png"), QString("%1 (v%2)").arg(args[tagPoint], args[tagPoint + 1])));
			}
			else if(isModAvailable(args[tagPoint], args[tagPoint + 1]))
				ui->modsList->addItem(new QListWidgetItem(QIcon("icons:mod-enabled.png"), QString("%1 (v%2)").arg(args[tagPoint], args[tagPoint + 1])));
			else
				ui->modsList->addItem(new QListWidgetItem(QIcon("icons:mod-delete.png"), QString("%1 (v%2)").arg(args[tagPoint], args[tagPoint + 1])));
		}
		for(auto & remainMod : enabledMods.keys())
		{
			ui->modsList->addItem(new QListWidgetItem(QIcon("icons:mod-disabled.png"), QString("%1 (v%2)").arg(remainMod, enabledMods[remainMod])));
		}
		if(!ui->modsList->count())
			ui->modsList->addItem("No issues detected");
		break;
		}


	case STATUS:
		protocolAssert(args.size() > 0);
		amount = args[0].toInt();
		protocolAssert(amount * 2 == (args.size() - 1));

		tagPoint = 1;
		ui->playersList->clear();
		for(int i = 0; i < amount; ++i, tagPoint += 2)
		{
			ui->playersList->addItem(args[tagPoint]);
		}
		break;

	case START: {
		protocolAssert(args.size() == 1);
		//actually start game
		gameArgs << "--lobby";
		gameArgs << "--lobby-address" << ui->hostEdit->text();
		gameArgs << "--lobby-port" << ui->portEdit->text();
		gameArgs << "--uuid" << args[0];
		startGame(gameArgs);		
		break;
		}

	case HOST: {
		protocolAssert(args.size() == 2);
		gameArgs << "--lobby-host";
		gameArgs << "--lobby-uuid" << args[0];
		gameArgs << "--lobby-connections" << args[1];
		break;
		}

	case CHAT: {
		protocolAssert(args.size() > 1);
		QString msg;
		for(int i = 1; i < args.size(); ++i)
			msg += args[i];
		chatMessage(args[0], msg);
		break;
		}

	default:
		sysMessage("Unknown server command");
	}

	if(authentificationStatus == AuthStatus::ERROR)
		socketLobby.disconnectServer();
	else
		authentificationStatus = AuthStatus::OK;
}
catch(const ProtocolError & e)
{
	chatMessage("System error", e.what(), true);
}

void Lobby::dispatchMessage(QString txt) try
{
	if(txt.isEmpty())
		return;

	QStringList parseTags = txt.split(":>>");
	protocolAssert(parseTags.size() > 1 && parseTags[0].isEmpty() && !parseTags[1].isEmpty());

	for(int c = 1; c < parseTags.size(); ++c)
	{
		QStringList parseArgs = parseTags[c].split(":");
		protocolAssert(parseArgs.size() > 1);

		auto ctype = ProtocolStrings.key(parseArgs[0]);
		parseArgs.pop_front();
		ServerCommand cmd(ctype, parseArgs);
		serverCommand(cmd);
	}
}
catch(const ProtocolError & e)
{
	chatMessage("System error", e.what(), true);
}

void Lobby::onDisconnected()
{
	authentificationStatus = AuthStatus::NONE;
	ui->stackedWidget->setCurrentWidget(ui->sessionsPage);
	ui->connectButton->setChecked(false);
}

void Lobby::chatMessage(QString title, QString body, bool isSystem)
{
	QTextCharFormat fmtBody, fmtTitle;
	fmtTitle.setFontWeight(QFont::Bold);
	if(isSystem)
		fmtBody.setFontWeight(QFont::DemiBold);
	
	QTextCursor curs(ui->chat->document());
	curs.movePosition(QTextCursor::End);
	curs.insertText(title + ": ", fmtTitle);
	curs.insertText(body + "\n", fmtBody);
	ui->chat->ensureCursorVisible();
}

void Lobby::sysMessage(QString body)
{
	chatMessage("System", body, true);
}

void Lobby::protocolAssert(bool expr)
{
	if(!expr)
		throw ProtocolError("Protocol error");
}

void Lobby::on_messageEdit_returnPressed()
{
	socketLobby.send(ProtocolStrings[MESSAGE].arg(ui->messageEdit->text()));
	ui->messageEdit->clear();
}

void Lobby::on_connectButton_toggled(bool checked)
{
	if(checked)
	{
		authentificationStatus = AuthStatus::NONE;
		username = ui->userEdit->text();
		const int connectionTimeout = settings["launcher"]["connectionTimeout"].Integer();

		Settings node = settings.write["launcher"];
		node["lobbyUrl"].String() = ui->hostEdit->text().toStdString();
		node["lobbyPort"].Integer() = ui->portEdit->text().toInt();
		node["lobbyUsername"].String() = username.toStdString();

		sysMessage("Connecting to " + ui->hostEdit->text() + ":" + ui->portEdit->text());
		//show text immediately
		ui->chat->repaint();
		qApp->processEvents();
		
		socketLobby.connectServer(ui->hostEdit->text(), ui->portEdit->text().toInt(), username, connectionTimeout);
	}
	else
	{
		socketLobby.disconnectServer();
	}
}

void Lobby::on_newButton_clicked()
{
	new LobbyRoomRequest(socketLobby, "", buildModsMap(), this);
}

void Lobby::on_joinButton_clicked()
{
	auto * item = ui->sessionsTable->item(ui->sessionsTable->currentRow(), 0);
	if(item)
	{
		auto isPrivate = ui->sessionsTable->item(ui->sessionsTable->currentRow(), 2)->data(Qt::UserRole).toBool();
		if(isPrivate)
			new LobbyRoomRequest(socketLobby, item->text(), buildModsMap(), this);
		else
			socketLobby.requestJoinSession(item->text(), "", buildModsMap());
	}
}


void Lobby::on_buttonLeave_clicked()
{
	socketLobby.requestLeaveSession(session);
}


void Lobby::on_buttonReady_clicked()
{
	socketLobby.requestReadySession(session);
}