import readlineSync from 'readline-sync';

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

const randomNumber = () => Math.floor(Math.random(1) * 100);

const mathSigns = ['+', '-', '*'];

const genMathSign = () => Math.floor(Math.random(1) * 3);

const randomMathSign = () => mathSigns[genMathSign()];

const trueAnswer = () => {
  let result = '';
  if (randomMathSign() === '+') {
    result = randomNumber() + randomNumber();
  }
  if (randomMathSign() === '-') {
    result = randomNumber() - randomNumber();
  }
  if (randomMathSign() === '*') {
    result = randomNumber() * randomNumber();
  }
  return result;
};

const questionForCalc = `${randomNumber()} ${randomMathSign()} ${randomNumber()}`;

const questionForNumber = () => {
  console.log(`Question: ${questionForCalc}`);
  return readlineSync.question('Your answer: ');
};

const calcGame = (name, playerAnswer, result) => {
  for (let correctAnswer = 0; correctAnswer < 3; questionForNumber()) {
    trueAnswer();
    if (playerAnswer === result) {
      correctAnswer += 1;
      console.log('Correct!');
    } else if (playerAnswer !== result) {
      console.log(`${playerAnswer} is wrong answer ;(. Correct answer was ${result}`);
      console.log(`Let's try again, ${name}`);
      correctAnswer = 0;
    }
  }
  console.log(`Congratulation, ${name}!`);
};

const game = () => {
  const genRandomNum = randomNumber();
  console.log('Welcome to the Brain Games!');
  const name = whatsYourName();
  console.log('What is the result of the expression?');
  const playerAnswer = questionForNumber();
  calcGame(name, playerAnswer);
  return genRandomNum;
};
export default game;