TyrionFront/Brain-games

import makeGame from '../gameEngine';
import getRandomNum from '../utils';

const description = 'Is this number prime?';

const isPrime = (number) => {
  if (number < 2) { return false; }
  const startDivider = 2;
  const iter = (divider) => {
    if (divider > Math.sqrt(number)) {
      return true;
    }
    if (number % divider === 0) { return false; }
    return iter(divider + 1);
  };
  return iter(startDivider);
};

const makeQuestionAnswer = () => {
  const question = getRandomNum();
  const rightAnswer = isPrime(question) ? 'yes' : 'no';
  return [question, rightAnswer];
};

export default gamerName => makeGame(description, makeQuestionAnswer, gamerName);