question.js

import readlineSync from 'readline-sync';

const getToKnow = () => {
  const name = readlineSync.question('May I have your name? ');
  console.log(`Hi, ${name}!`);
  return name;
};


const evenNumberGame = () => {
  console.log("Welcome to the Brain Games!");
  console.log('Answer "yes" if number even otherwise answer "no".');

  const name = getToKnow();

  if (isPlayerWin()) {
    console.log(`Congratulations, ${name}!`);
  } else {
    console.log(`Let's try again, ${name}!`);
  }
};


const isPlayerWin = () => {

  const evenNumber = (attempt) => {
    if (attempt === 0) {
      return true;
    }


    const num = getRandom(100);
    const mod = num % 2;

    console.log(`Question: ${num}`);
    const userAnswer = readlineSync.question('Your answer: ');

    if (mod === 0) {
      if (userAnswer === "yes") {
        console.log("Correct!");
        attempt -= 1;
        evenNumber(attempt);
      } else {
        console.log(`' ${userAnswer} ' is wrong answer ;(. Correct answer was ' yes '.`);
        return false;
      }
    }

    if (mod !== 0) {
      if (userAnswer === "no") {
        console.log("Correct!");
        attempt -= 1;
        evenNumber(attempt);
      } else {
        console.log(`' ${userAnswer} ' is wrong answer ;(. Correct answer was ' no '.`);
        return false;
      }
    }

  }

  return evenNumber(3);
}


const getRandom = (max) => {
  return Math.floor(Math.random() * max);
};


export {getToKnow, evenNumberGame};