const fs = require('fs');
const readline = require('readline');

var nounList = [];
var verbList = [];
var ccList = [];
var scList = [];

function makeList(list, path) {
  let readInterface = readline.createInterface({
    input: fs.createReadStream(path),
    crlfDelay: Infinity  // treat \r\n as one break
  });

  readInterface.on('line', function(line) {
    list.push(line.toLowerCase());
  });
}

makeList(nounList, "./Sentence Type Checker/nouns.txt");
makeList(verbList, "./Sentence Type Checker/verbs.txt");
makeList(ccList, "./Sentence Type Checker/cc.txt");
makeList(scList, "./Sentence Type Checker/sc.txt");

var currentNouns = [];
var currentVerbs = [];
var currentCc = [];
var currentSc = [];
var sentenceType;

function populateList(outputList, testList, sentenceArr) {
  for (let word of testList) {
    if (sentenceArr.includes(word)) {
      console.log(word);
      outputList.push(word);
    }
  }
}

function checkSentence(sentence) {
  let sentenceArr = sentence.toLowerCase().split(" ");

  populateList(currentNouns, nounList, sentenceArr);
  populateList(currentVerbs, verbList, sentenceArr);
  populateList(currentCc, ccList, sentenceArr);
  populateList(currentSc, scList, sentenceArr);

  if (checkSimple())
    sentenceType = "Simple";
}

function checkSimple(sentenceNouns, sentenceVerbs) {
  return (sentenceNouns.length >= 1 && sentenceVerbs.length >= 1 && sentenceNouns.length + sentenceVerbs.length <= 3);
}