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/*
	Initalizing packages
*/
const SteamUser = require('steam-user');
const TradeOfferManager = require('steam-tradeoffer-manager');
const SteamTotp = require('steam-totp');
const SteamCommunity = require('steamcommunity');
const fs = require('fs');
const request = require('request');
const config = require('./config.json');

const community = new SteamCommunity();
const client = new SteamUser();
const manager = new TradeOfferManager({
	steam: client,
	domain: 'example.com',
	language: 'en'
});

/*
	Polling Steam and Logging On
*/
client.logOn({
	accountName: config.username,
	password: config.password,
	twoFactorCode: SteamTotp.generateAuthCode(config.sharedSecret)
});

/*
	Getting prices
*/
const priceUrl = 'https://api.csgofast.com/price/all';

function getPriceList() {
	request(priceUrl, (error, response, body) => {
		if (error || response.statusCode !== 200) return console.log(`Error: ${error} - Status Code: ${response.statusCode}`);
		fs.writeFile('prices.json', body);
	});
}

function priceItemsInOffer(offer) {
	let offerValue = 0;
	if (offer) {
		const prices = require('./prices.json'); //Requiring price file
		//Loop through offer and get total price
		offerValue += offer.reduce((total, item) => total + prices[item.market_hash_name]);
	}
	return offerValue;
}

//Make the first price request
getPriceList();
//Auto Refresh price
setInterval(getPriceList, config.options.priceRefreshInterval * 1000);

/*
	Friend requests and chat
*/
client.on('friendRelationship', (steamid, relationship) => {
	if (relationship === 2 && config.options.acceptRandomFriendRequests) {
		client.addFriend(steamid);
		client.chatMessage(steamid, config.options.chatResponse.newFriend);
	}
});

client.on('friendMessage', (steamID, message) => {
	console.log(config.options.chatResponse.commands[message]);
	if (config.options.chatResponse.commands[message]) {
		client.chatMessage(steamID, config.options.chatResponse.commands[message]);
	}
});

/*
	Offer handling
*/
function isInArray(value, array) {
  return array.indexOf(value) > -1;
}
function acceptOffer(offer) {
	offer.accept((err) => {
		if (err) console.log(`Unable to accept offer: ${err.message}`);
		community.checkConfirmations();
	});
}

function declineOffer(offer) {
	offer.decline((err) => {
		if (err) return console.log(`Unable to decline offer: ${err.message}`);
	});
}

manager.on('newOffer', function(offer) {
	const partnerid = offer.partner.getSteamID64();

	offer.getUserDetails((err, me, them) => {
		if(err) return console.log(err);

		if(them.escrowDays > 0) {
			console.log('Trade is in escrow. Declining.');
			declineOffer(offer);
		}
	});

	console.log(`New offer # ${offer.id} from ${partnerid}`);

	if (isInArray(partnerid, config.adminIDs)) {
		client.chatMessage(partnerid, config.options.chatResponse.adminTrade);
		acceptOffer(offer);

	} else if (!offer.itemsToGive.length) {
		console.log(`${partnerid} just donated us items.`);

		client.chatMessage(partnerid, config.options.chatResponse.donation); //Sending message for donations
		acceptOffer(offer);

	} else if (priceItemsInOffer(offer.itemsToReceive) < config.options.minimumprice) {
		client.chatMessage(partnerid, config.options.chatResponse.junk); //Sending message for donations
		declineOffer(offer);

	} else if (priceItemsInOffer(offer.itemsToGive) > priceItemsInOffer(offer.itemsToReceive) * config.options.percentamount) {
		client.chatMessage(partnerid, config.options.chatResponse.tradeDeclined); //Sending message when trade declined
		declineOffer(offer);
	} else {
		client.chatMessage(partnerid, config.options.chatResponse.tradeAccepted); //Sending message for accepting offer
		acceptOffer(offer);
	}
});



//Refresh polldata.json
manager.on('pollData', function(pollData) {
	fs.writeFile('polldata.json', JSON.stringify(pollData));
});

if (fs.existsSync('polldata.json')) {
	manager.pollData = JSON.parse(fs.readFileSync('polldata.json'));
}

client.on('loggedOn', function(details) {
	console.log(`Logged into Steam as ${client.steamID.getSteam3RenderedID()}`);
 	client.setPersona(SteamUser.Steam.EPersonaState.Online,config.botname);
});

client.on('webSession', function(sessionID, cookies) {
	manager.setCookies(cookies, function(err) {
		if (err) return console.log(err);
		console.log(`Got API key: ${manager.apiKey}`);
	});

	community.setCookies(cookies);
	community.startConfirmationChecker(config.options.confirmationInterval, config.identitySecret);
});