/**
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random
 */
export class Rand {
  /**
   * This example returns a random integer between the specified values.
   * The value is no lower than min (or the next integer greater than min
   * if min isn't an integer), and is less than (but not equal to) max.
   */
  static getRandomInt(min: number, max: number) {
    const minCeiled = Math.ceil(min);
    const maxFloored = Math.floor(max);

    if (minCeiled === maxFloored) {
      return minCeiled;
    }

    return Math.floor(Math.random() * (maxFloored - minCeiled + 1) + minCeiled);
  }

  /**
   * This example returns a random number between the specified values.
   * The returned value is no lower than (and may possibly equal) min,
   * and is less than (and not equal) max.
   */
  static getRandomArbitrary(min: number, max: number) {
    if (min === max) {
      return min;
    }

    return Math.random() * (max - min) + min;
  }
}