andreirk/project-lvl1-s280

import readlineSync from 'readline-sync';
import getNameFromUser from '..';

const isBalancedArr = (arr) => {
  const min = Math.min(...arr);
  const max = Math.max(...arr);
  return (min + 1) === max || min === max;
};

const balance = (num) => {
  const arr = (`${num}`).split('').map(el => parseInt(el, 10));
  while (!isBalancedArr(arr)) {
    let min = Math.min(...arr);
    let max = Math.max(...arr);
    const indexOfMin = arr.indexOf(min);
    const indexOfMax = arr.indexOf(max);
    max -= 1;
    min += 1;
    arr.splice(indexOfMin, 1, min);
    arr.splice(indexOfMax, 1, max);
  }
  return arr.sort().join('');
};

const game = (numberOfTries) => {
  console.log('Balance the given number. \n\n');
  const userName = getNameFromUser();
  for (let i = 0; i < numberOfTries; i += 1) {
    const num = Math.ceil(Math.random() * 9999);
    const answer = readlineSync.question(`Question: ${num} \n`);
    const correctAnswer = balance(num);
    console.log(`You answer: ${answer}`);
    if (answer === correctAnswer) {
      console.log('Correct!');
    } else {
      console.log(`${answer} is wrong answer ;(. Correct answer was ${correctAnswer}`);
      console.log(`Let's try again, ${userName}!`);
      return;
    }
  }
  console.log(`Congratulations, ${userName}!`);
};

export default game;