app.js

app.post('/test',function(req,res){
	r = req.body;
	items = JSON.parse(r.items);
	const tradeurl = r.tradeurl;
	let client = new SteamUser();
	let manager = new TradeOfferManager({
		"steam": client, // Polling every 30 seconds is fine since we get notifications from Steam
		"domain": "example.com", // Our domain is example.com
		"language": "en",
		"cancelTime":180000
	});
	let community = new SteamCommunity();

	// Steam logon options
	let logOnOptions = {
		"accountName": config.username,
		"password": config.password,
		"twoFactorCode": SteamTotp.getAuthCode(config.sharedSecret)
	};

	if (FS.existsSync('polldata.json')) {
		manager.pollData = JSON.parse(FS.readFileSync('polldata.json').toString('utf8'));
	}

	client.logOn(logOnOptions);

	client.on('loggedOn', function() {
		console.log("Logged into Steam");
	});

	client.on('webSession', function(sessionID, cookies) {
		manager.setCookies(cookies, function(err) {
			if (err) {
				console.log(err);
				process.exit(1); // Fatal error since we couldn't get our API key
				return;
			}

			console.log("Got API key: " + manager.apiKey);

			// Get our inventory
			manager.getInventoryContents(570, 2, true, function(err, inventory) {
				if (err) {
					console.log(err);
					return;
				}
				// console.log(inventory);
				// throw "stop execution";
				if (inventory.length == 0) {
					// Inventory empty
					console.log("Dota 2 inventory is empty");
					return;
				}

				console.log("Found " + inventory.length + " Dota 2 items");

				// Create and send the offer
				let offer = manager.createOffer(tradeurl);
				item = [
					{
						appid: 570,
						contextid: '2',
						classid: '645249158',
						assetid: '13126112943',
						instanceid: '260036609',
						amount: 1
					}
				];
				offer.addTheirItems(items);
				offer.setMessage("Offer: #"+ offer.id);
				offer.send(function(err, status) {
					if (err) {
						console.log(err);
						return;
					}

					if (status == 'pending') {
						// We need to confirm it
						console.log(`Offer #${offer.id} sent, but requires confirmation`);
						community.acceptConfirmationForObject(config.identitySecret, offer.id, function(err) {
							if (err) {
								console.log(err);
							} else {
								console.log("Offer confirmed");
							}
						});
					} else {
						console.log(`Offer #${offer.id} sent successfully`);
					}
				});
			});
		});

		community.setCookies(cookies);
	});

	manager.on('sentOfferChanged', function(offer, oldState) {
		console.log(`Offer #${offer.id} changed: ${TradeOfferManager.ETradeOfferState[oldState]} -> ${TradeOfferManager.ETradeOfferState[offer.state]}`);
		if (TradeOfferManager.ETradeOfferState[offer.state] == 'Accepted'){
			manager.shutdown();
			client.logOff();
			//process.exit(1); // testing lang
			return;
		}
	});

	manager.on('pollData', function(pollData) {
		FS.writeFileSync('polldata.json', JSON.stringify(pollData));
	});

	manager.on('sentOfferCanceled',function(reason){
		console.log('offer cancelled franz');
		manager.shutdown();
		client.logOff();
		FS.unlink('polldata.json',function(err){
			console.log('poll data deleted');
			res.send();
		});
	});



});