const net = require('net');
const { pipeline } = require('stream');
const iconv = require('iconv-lite');
const sleep = require('system-sleep');
const nbind = require('nbind');
const lib = nbind.init().lib;
const Crypto = new lib.Crypto();
let session = 0;
let packetId = Math.floor(Math.random() * 9999999);

const username = 'xxxxxxx';
const password = 'xxxxxxxx';


const nosCrypto = require('nostale-cryptography/client');

let client = new net.Socket();
const hostLogin = '79.110.84.75';
const portLogin = 4002;

const socketLogin = client.connect(portLogin, hostLogin);

client.on('connect', function () {
	const encryptStream = nosCrypto.createCipher();
	const decryptStream = nosCrypto.createDecipher();

	const encodingStream = iconv.encodeStream('win1252');
	const decodingStream = iconv.decodeStream('win1252');
	pipeline(
		encodingStream,
		encryptStream,
		socketLogin,
		decryptStream,
		decodingStream,
		(err) => {
			if (err) {
				throw err
			}

			console.log('Game closed because stream pipeline closed.')
		}
	);
	buildLoginPacket().then((loginPacket) => {
		console.log(loginPacket);
		encodingStream.write(loginPacket);
		decodingStream.on('data', (packetLogin) => {
			console.log(packetLogin);
			session = parseInt(packetLogin.split(' ')[2]);
		})
	});
});

client.on('close', function() {
	let clientWorld = new net.Socket();
	const hostWorld = '79.110.84.37';
	const portWorld = 4015;

	const socketWorld = clientWorld.connect(portWorld, hostWorld);

	clientWorld.on('connect', function () {
		clientWorld.write(Buffer.from(Crypto.encryptGamePacket(buildSessionWorldPacket(), session, true)));
		setTimeout(() => clientWorld.write(Buffer.from(Crypto.encryptGamePacket(buildLoginWorldPacket(), session, false).concat(Crypto.encryptGamePacket(buildPasswordWorldPacket(), session, false)))), 200);
	});
	clientWorld.on('data', 	function () {
		const encryptStream = nosCrypto.createCipher();
		const decryptStream = nosCrypto.createDecipher();

		const encodingStream = iconv.encodeStream('win1252');
		const decodingStream = iconv.decodeStream('win1252');
		pipeline(
			encodingStream,
			encryptStream,
			socketWorld,
			decryptStream,
			decodingStream,
			(err) => {
				if (err) {
					throw err
				}

				console.log('Game closed because stream pipeline closed.')
			}
		);
		decodingStream.on('data', (data) => {
			console.log(data);
		});
	});
});

async function buildLoginPacket () {
	const nostalePath = 'C:\\Program Files (x86)\\NosTale_FR';

	const encodedUsername = iconv.encode(username, 'win1252');
	const encodedPassword = iconv.encode(password, 'win1252');

	const random = Math.floor(Math.random() * 9999999);
	const encryptedPassword = nosCrypto.encryptPassword(encodedPassword);
	const guid = '12d45678-123d-422a-a223-25bde24865dc';
	const version = await nosCrypto.createVersion(nostalePath);
	const checksumHash = await nosCrypto.createChecksumHash(encodedUsername, nostalePath);

	return `NoS0575 ${random} ${username} ${encryptedPassword} ${guid} ${version} 0 ${checksumHash}`;
}

function buildSessionWorldPacket() {
	let packet = packetId + ' ' + session;
	packetId += 1;
	console.log(packet);
	return packet;
}

function buildLoginWorldPacket() {
	let packet = packetId + ' ' + username;
	packetId += 1;
	console.log(packet);
	return packet;
}

function buildPasswordWorldPacket() {
	let packet = packetId + ' ' + password;
	packetId += 1;
	console.log(packet);
	return packet;
}