compose-v0.1.js

function compose(tweets = this.tweets, verses = this.settings.poem_rules.verse_count) {
  let blockA = [], blockB = [], poem = [];
  let i = 0;
  let processed = 0;
  let authors = [];
  let titleBlocks = [];

  while (processed < verses) {
    const tweet = tweets[i];

    if (!tweet) {
      tweets.shuffle();
      blockA = [];
      blockB = [];
      i = 0;
      processed = 0;
      continue;
    }

    let text = this.sanitize(tweet);

    let lastWord = text.split(' ').pop();
    let rhyme = this.getRhymes(lastWord, tweets.filter(t => { return t.id_str !== tweet.id_str }));

    if (rhyme.length > 0) {
      blockA.push(text);
      let tweetB = rhyme.shuffle()[Math.floor(Math.random() * rhyme.length)];
      blockB.push(this.sanitize(tweetB));

      authors.push({ name: tweet.user.name, alias: tweet.user.screen_name });
      authors.push({ name: tweetB.user.name, alias: tweetB.user.screen_name });

      titleBlocks.push(tweet.id_str.substr(-4));
      titleBlocks.push(tweetB.id_str.substr(-4));

      processed += 2;
    }

    i += 1;
  }

  for (i = 0; i < blockA.length; i++) {
    poem.push(blockA[i]);
  }

  for (i = 0; i < blockB.length; i++) {
    poem.push(blockB[i]);
  }

  const title = `Twoem ${titleBlocks.join(' ')}`;

  return {
    title: title,
    authors: authors,
    verses: poem
  };
}