var account = {
        shared_secret: '',
        identity_secret: '',
        accountName: '',
        password: ''
};

var mainSteamID = ''; //Steam64! For example: "76561198046273125"

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

var client = new SteamUser();
var community = new Steamcommunity();

var manager = new TradeOfferManager({
        "steam": client,
        "language": "en",
        "pollInterval": -1
});

account.twoFactorCode = SteamTotp.generateAuthCode(account.shared_secret);

client.logOn(account);

client.on('loggedOn', function(data) {
        console.log('Logged in');
        client.setPersona(SteamUser.EPersonaState.Online);
});

client.on('webSession', function(sessionID, cookies) {
        manager.setCookies(cookies, function(err) {
                if (err) {
                        console.log('Cookie Error: ' + err);
                        if (err != 'Access Denied') {
                                console.log('Failed to set TradeOfferManagerCookies. Aborting...');
                                process.exit();
                        } else {
                                console.log('Account is currently locked. Aborting...');
                                process.exit();
                        }
                } else {
                        console.log('Cookies set');
                }
        });

        community.setCookies(cookies);
        community.chatLogon();
});

community.on('sessionExpired', function(err) {
        console.log('Session expired.');
        if (err) {
                if (err.message == 'Not Logged In') {
                        console.log('Not Logged In');
                        client.webLogOn();
                        community.chatLogon();
                } else {
                        console.log('Error :' + err.message);
                }
        } else {
                console.log('Relogin.');
                client.webLogOn();
        }
});

manager.on('newOffer', function(offer) {
        if (offer.itemsToGive.length == 0 && offer.itemsToReceive.length > 0) {
                console.log("Received a donation! Accepting...")
                offer.accept(function(err) {
                        if (err) {
                                console.log("Could not accept: " + error);
                        } else {
                                console.log("Successfully accepted!")
                        }
                });
        } else if(offer.partner.getSteamID64() == mainSteamID) {
                console.log("Received admin offer. Accepting!")
                offer.accept(function(err) {
                        if (err) {
                            console.log("Could not accept this offer [" + offer.id + "]: " + err);
                        } else {
                            console.log('Offer [' + offer.id + '] sucessfully accepted.');
                            setTimeout(function(){
                                community.acceptConfirmationForObject(account.identity_secret, offer.id, function(err){
                                    if(err){
                                        console.log("Error confirming [" + offer.id + "]: " + err);
                                    } else {
                                        console.log("Confirmed offer [" + offer.id + "]")
                                    }
                                });
                            }, 1000);
                        }
                });
        } else {
                console.log("Received an offer (not a donation, not by admin) - ignoring it!")
                offer.decline(function (){ console.log("Offer declined!") });
        }
});