bot.js

const SteamUser = require('steam-user');
const SteamTotp = require('steam-totp');
const SteamCommunity = require('steamcommunity');
const TradeOfferManager = require('steam-tradeoffer-manager');
const TeamFortress2 = require('tf2');


const Prices = require('./prices.json');
const config = require('./config.json');

const client = new SteamUser();
const tf2 = new TeamFortress2(client);
const community = new SteamCommunity();
const manager = new TradeOfferManager ({
    steam: client,
    community: community,
    language: 'en'
});

const logOnOptions = {
    accountName: config.username,
    password: config.password,
    twoFactorCode: SteamTotp.generateAuthCode(config.sharedSecret)
};

client.logOn(logOnOptions);

    console.log('succesfully logged on.');
client.on('loggedOn', () => {
    client.setPersona(SteamUser.Steam.EPersonaState.Online);
    client.gamesPlayed([440, "Bot Uptime"]);
});

client.on("friendMessage", function(steamID, message) {
    if (message == "sfjgsfjgtuaffg") {
        client.chatMessage(steamID, "hello, im just a bot, why bother? If you need to speek to the owner of the bot, please add and send a message to this account: https://steamcommunity.com/id/sanlys/ or leave a comment on the same profile, thanks!");
    }
});

client.on('webSession', (sessionid, cookies) => {
    manager.setCookies(cookies);

    community.setCookies(cookies);
    community.startConfirmationChecker(20000, config.identitySecret);
});

function acceptOffer(offer) {
    offer.accept((err) => {
        community.checkConfirmations();
        console.log("We Accepted an offer");
        if (err) console.log("There was an error accepting the offer.");
    });
}

function declineOffer(offer) {
    offer.decline((err) => {
        console.log("We Declined an offer");
        if (err) console.log("There was an error declining the offer.");
    });
}

function processOffer(offer) {
    if (offer.isGlitched() || offer.state === 11) {
        console.log("Offer was glitched, declining.");
        declineOffer(offer);
    } else if (offer.partner.getSteamID64() === config.ownerID) {
        acceptOffer(offer);
    } else {
        var ourItems = offer.itemsToGive;
        var theirItems = offer.itemsToReceive;
        var ourValue = 0;
        var theirValue = 0;
        for (var i in ourItems) {
            var item = ourItems[i].market_name;
            if(Prices[item]) {
                ourValue += Prices[item].sell;
            } else {
                console.log("Invalid Value.");
                ourValue += 99999;
            }
        }
        for(var i in theirItems) {
            var item= theirItems[i].market_name;
            if(Prices[item]) {
                theirValue += Prices[item].buy;
            } else {
            console.log("Their value was different.")
            }
        }

    console.log("Our value: "+ourValue);
    console.log("Their value: "+theirValue);

    if (ourValue <= theirValue) {
        acceptOffer(offer);
    } else {
        declineOffer(offer);
    }
    }
}

client.setOption("promptSteamGuardCode", false);

manager.on('newOffer', (offer) => {
     processOffer(offer);
});

/* Crafting */

var scrapAmt = 25;
var pollCraft = 30;

tf2.on('connectedToGC', function() {
    console.log("Connected to tf2 game server.");
});

tf2.on('backpackLoaded', function () {
    console.log("Backpack is loaded");
});

function craftS(amtNeedScrap) {
    if (tf2.backpack == undefined) {
        console.log("The bot could not connect to the team fortress 2 backpack, unable to craft change in metal");
        return
    } else {
        console.log("attempting to craft...");
        var amtOfScrap = 0;
        for (var i = 0; i <tf2.backpack.length; i++) {
            if (tf2.backpack[i].defIndex === 5000) {
                amtOfScrap++;
            }
        }
        for (var i = 0; i <tf2.backpack.length; i++) {
            if (tf2.backpack[i].defIndex === 5002) {
                amtOfScrap +=9;
                var beep = new Array;
                beep.push(parseInt(tf2.backpack[i].id));
                tf2.craft(beep);

    } else if (tf2.backpack[i].defIndex === 5001) {
                amtOfScrap +=3;
                var beep = new Array;
                beep.push(parseInt(tf2.backpack[i].id));
                tf2.craft(beep);
            }
            if (amtOfScrap >= amtNeedScrap) {
                break;
            }
        }


    }
}

tf2.on('craftingComplete', function(e) {
    console.log("Crafting was succesfull.");
});

client.on('friendMessage#'+config.ownerID, function(steamID, message) {
    if (message == "craft") {
        craftS(scrapAmt);
        console.log("Recieved order to craft from admin.")
    } else {
        console.log("craft error.")
    }
});

setInterval(function() {
    craftS(scrapAmt);
}, 1000 * 60 * pollCraft)