iPhoenixBot.js

function parse(sentence) {
  var uniques = array => Array.from(new Set(array)), dict2 = []
  var words = sentence.match(/.+?\b(?:\W+)?/g).filter(x => x.length)
  var dict = uniques(words)
  dict.push([]);
  words = words.map(word => dict.findIndex(x => x == word))
  words.push(dict.length - 1)
  dict = dict.map(x => [x, [], []]);
  words.map((x, i) => {
  	if (x!= dict.length - 1)
  		dict[x][1].push(words[i + 1])
  });
  dict.map((entry,i) => entry[1].map(a => dict[a][2].push(i)));
  var combine = (entry, i) => {
    dict[entry[1][0]][2] = dict[entry[1][0]][2].filter(a => a != i)
    return [entry[0] + dict[entry[1][0]][0], dict[entry[1][0]][1], entry[2]]
  }
  while(dict.find(x => x[1].length == 1)) {
    dict = dict.map((entry, i) => entry[1].length == 1 ? combine(entry, i) : entry)
  }

  dict = dict.map((entry,i) => [entry[0],entry[1],entry[2],i]).filter(entry=>entry[2].length)
  dict = dict.map(entry => [entry[0], entry[1].length ? entry[1].map(i=>dict.findIndex(a=>a[3]==i)) : []])
  dict2 = uniques(dict.map(x=>x[1].join('|'))).map(x=>x.split('|').map(x=>parseInt(x)))
  return dict2.map(x=>x.map(a=>a.toString(36)).join('!')).join('@')+'»'+dict.map((x,i)=>[x[0],dict2.findIndex(a=>a.join('|')==x[1].join('|'))]).map(x=>x[1].toString(36)+("|"+x[0]).replace(/\n/g,'¶')).join('«')
}

function generate(dict, maxLength) {
	var half = dict.split('»');
	dict = [half[0].split('@').map(x=>x.split('!').map(x=>parseInt(x,36))),half[1].replace(/¶/g,'\n').split('«').map(a=>[a.match(/\|([^]*)/)[1], parseInt(a.match(/\w+/)[0],36)])]
	var dict2 = dict[0]
	dict = dict[1]
  var end = dict.length - 1, m = Math;
  var chooseIndex = arr => m.floor(m.random() * arr.length);
  var word = end;
  while(word == end) {
    word = chooseIndex(dict)
  }
  var len = 0,
    str = "", lastWord = word;
  for (var len = 0; word != end && len < maxLength; len++) {
  	if (word < dict.length - 1) {
  	    str += dict[word][0];
  	}
  	lastWord = word
    word = dict2[dict[lastWord][1]][chooseIndex(dict2[dict[lastWord][1]])]
  }
  document.body.innerText = str;
}