var steam = require('steam');
var fs = require('fs');
// npm install readline-sync
var readlineSync = require('readline-sync');

// request an auth code from the user, this freezes any other progress until a response is received
var promptAuthCode = function(account) {
	var code = readlineSync.question('[STEAM][' + account.username + '][AUTHCODE]: Enter authcode: ');
	account.authcode = code;
}

// just for swagger
var shuffleArray = function(array) {
    for (var i = array.length - 1; i > 0; i--) {
        var j = Math.floor(Math.random() * (i + 1));
        var temp = array[i];
        array[i] = array[j];
        array[j] = temp;
    }

    return array;
}

// accounts array, you can move this into another file if you want
// if you move it to a different file you'll need to do var ... = require(...)
// to access the array.
var accounts = [
	{
		username: "",
		password: "",
		games: [
			730,
			570,
			440,
			363970,
			333930,
			227700
		],
		loggedIn: false
	}
];

var build = function() {
	for (var index in accounts) {
		buildBot(index);
	}
}

var buildBot = function(index) {
	var account = accounts[index];
	var username = account.username;
	var password = account.password;
	var authcode = account.authcode;
	var sentryFileHash = new Buffer(username).toString('base64');
	var bot = new steam.SteamClient();

	if (fs.existsSync(sentryFileHash)) {
		var sentry = fs.readFileSync(sentryFileHash);
		console.log("[STEAM][" + username + "]: Logging in with sentry. (" + sentryFileHash + ")");
		bot.logOn({
			accountName: username,
			password: password,
			shaSentryfile: sentry
		});
	} else {
		console.log("[STEAM][" + username + "]: Logging in without sentry.");
		bot.logOn({
			accountName: username,
			password: password,
			authCode: authcode
		});
	}

	bot.on('loggedOn', function() {
		console.log("[STEAM][" + username + "]: Logged In.");
		account.loggedIn = true;
		bot.setPersonaState(steam.EPersonaState.Online); // our bot needs to be in an online state for our idling to work.
		bot.gamesPlayed(shuffleArray(account.games)); // idle games

		setInterval(function() {
			//
			if (account.loggedIn) {
				try {
					console.log("[STEAM][" + username + "]: Changing games");
					bot.gamesPlayed([]); // empty array, we aren't playing anything.
					bot.gamesPlayed(shuffleArray(account.games));
				} catch (ex) {}
			}
			//
		}, 7200000); // 2 hours
	});

	bot.on('sentry', function(sentryHash) {
		console.log("[STEAM][" + username + "]: Received sentry file.");
		fs.writeFile(sentryFileHash, sentryHash, function(err) {
			if (err){
				console.log("[STEAM][" + username + "]: " + err);
			} else {
				console.log("[STEAM][" + username + "]: Wrote sentry file.");
			}
		});
	});

	bot.on('error', function(e) {
		if (e.eresult == steam.EResult.InvalidPassword) {
			console.log("[STEAM][" + username + "]: " + 'Login Failed. Reason: invalid password');
		} else if (e.eresult == steam.EResult.AlreadyLoggedInElsewhere) {
			console.log("[STEAM][" + username + "]: " + 'Login Failed. Reason: already logged in elsewhere');
		} else if (e.eresult == steam.EResult.AccountLogonDenied) {
			console.log("[STEAM][" + username + "]: " + 'Login Failed. Reason: logon denied - steam guard needed');
			promptAuthCode(accounts[index]);
			buildBot(index);
		} else {
			if (account.loggedIn) {
				account.loggedIn = false;
				bot.logOff();
				// change log in status to false to prevent exceptions
				// a logout reason of 'unknown' happens when ever you cannot access the account
				// or when you're logged out.
				console.log("[STEAM][" + username + "]: -----------------------------------------------------------");
				console.log("[STEAM][" + username + "]: Cannot log in at this time.");
				console.log("[STEAM][" + username + "]: !!! The script will try to log in again in 5 minutes. !!!");
				console.log("[STEAM][" + username + "]: If you're currently logged into the account log out.");
				console.log("[STEAM][" + username + "]: You are able to log into an account whilst it's idling, just don't play games.");
				setTimeout(function() {
					// try again.
					buildBot(index);
				}, 300000);
				console.log("[STEAM][" + username + "]: -----------------------------------------------------------");
			} else {
				console.log("[STEAM][" + username + "]: Login Failed. Reason: " + e.eresult);
			}
		}
	});
}

// run the idle script.
build();