Quickly hacked-together solution for retweeting images from a private account

sewmarsi-retweets.js

var Twit = require('twit')

var fs = require('fs');

var request = require('request');


var credentials = JSON.parse(fs.readFileSync('secrets.json'));


var T = new Twit({
    consumer_key: credentials.consumer_key,
    consumer_secret: credentials.consumer_secret,
    access_token: credentials.access_token_key,
    access_token_secret: credentials.access_token_secret
});


function fixTweetText(text){
  text = text.replace(/\&amp\;/g, '&');//Replace ampersands with *real* ampersands
  text = text.replace(/http(s?):\/\/.+/, ''); //Strip links
  return text;
}

var cachedTweets = [];
var MAX_CACHED_TWEETS = 20;
var cachedImages = [];
var MAX_CACHED_IMAGES = 10;
var cacheFull = false;

var trump = 0;
var hillary = 0;

var twfn = function(tweet){
  //console.log(tweet);
  if(tweet.retweeted_status || tweet.possibly_sensitive){
    return; //No retweets;
  }

  var tw = {
  'text':  fixTweetText(tweet.text),
  'name': tweet.user.name,
  'handle': tweet.user.screen_name,
  'profileimg': tweet.user.profile_image_url
  };

  if(tweet.entities.media){
    tweet.entities.media.forEach(function(media){
      if(media.type == 'photo'){
        tw.image_url = media.media_url;
	
	var request = require('request');
	request(tw.image_url, function (error, response, body) { //Download image
	  if (!error && response.statusCode == 200) {
	    var b64content = new Buffer(body).toString('base64'); //Encode as base64
		// first we must post the media to Twitter
		T.post('media/upload', { media_data: b64content }, function (err, data, response) {
		  // now we can assign alt text to the media, for use by screen readers and
		  // other text-based presentations and interpreters
		  var mediaIdStr = data.media_id_string;
		  var altText = tw.text;
		  var meta_params = { media_id: mediaIdStr, alt_text: { text: altText } }

		  T.post('media/metadata/create', meta_params, function (err, data, response) {
		    if (!err) {
		      // now we can reference the media and post a tweet (media will attach to the tweet)
		      var params = { status: tw.text, media_ids: [mediaIdStr] }

		      T.post('statuses/update', params, function (err, data, response) {
			console.log(data)
		      })
		    }
		  })
		})
	  }
	})        


      }else{
        console.log('different media: ' + media.type + " url = " + media.media_url);
      }
    });
  }else{
    //Tweet status text
    T.post('statuses/update', { status: tw.text }, function(err, data, response){console.log(data)})
  }
};

var tags = ['#sewmarsi'];
var stream = T.stream('statuses/filter', {track: tags});
console.log('Stream connected');

stream.on('tweet', twfn);