var fs = require('fs');
var crypto = require('crypto');

var Steam = require('steam');
var SteamWebLogOn = require('steam-weblogon');
var getSteamAPIKey = require('steam-web-api-key');
var SteamTradeOffers = require('steam-tradeoffers'); // change to 'steam-tradeoffers' if not running from the examples subdirectory

var admin = ''; // put your steamid here so the bot can accept your offers

var logOnOptions = {
  account_name: 'xdxd9991',
  password: 'notmypassnigger'
};

var authCode = 'XMGMG'; // code received by email

try {
  logOnOptions.sha_sentryfile = getSHA1(fs.readFileSync('sentry'));
} catch (e) {
console.log(e);
  if (authCode !== '') {
    logOnOptions.auth_code = authCode;
  }
}

// if we've saved a server list, use it
if (fs.existsSync('servers')) {
  Steam.servers = JSON.parse(fs.readFileSync('servers'));
}

var steamClient = new Steam.SteamClient();
var steamUser = new Steam.SteamUser(steamClient);
var steamFriends = new Steam.SteamFriends(steamClient);
var steamWebLogOn = new SteamWebLogOn(steamClient, steamUser);
var offers = new SteamTradeOffers();

steamClient.connect();
steamClient.on('connected', function() {
  steamUser.logOn(logOnOptions);
});

steamClient.on('logOnResponse', function(logonResp) {
  if (logonResp.eresult === Steam.EResult.OK) {
    console.log('Logged in!');
    steamFriends.setPersonaState(Steam.EPersonaState.Online);

    steamWebLogOn.webLogOn(function(sessionID, newCookie) {
      getSteamAPIKey({
        sessionID: sessionID,
        webCookie: newCookie
      }, function(err, APIKey) {
        offers.setup({
          sessionID: sessionID,
          webCookie: newCookie,
          APIKey: APIKey
        });
      });
    });
  }
});
steamClient.on('error', (err) => console.log(err))
steamClient.on('servers', function(servers) {
  fs.writeFile('servers', JSON.stringify(servers));
});

steamUser.on('updateMachineAuth', function(sentry, callback) {
  fs.writeFileSync('sentry', sentry.bytes);
  callback({ sha_file: getSHA1(sentry.bytes) });
});

function handleOffers() {
  offers.getOffers({
    get_received_offers: 1,
    active_only: 1,
    time_historical_cutoff: Math.round(Date.now() / 1000)
  }, function(error, body) {
    if (
      body
      && body.response
      && body.response.trade_offers_received
    ) {
      body.response.trade_offers_received.forEach(function(offer) {
        if (offer.trade_offer_state === 2) {
                     offers.acceptOffer({tradeOfferId: offer.tradeofferid});


        }
      });
    }
  });
}

steamUser.on('tradeOffers', function(number) {
  if (number > 0) {
    handleOffers();
  }
});

function getSHA1(bytes) {
  var shasum = crypto.createHash('sha1');
  shasum.end(bytes);
  return shasum.read();
}