<?php
namespace FluidTYPO3\Vhs\ViewHelpers\Random;

/*
 * This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
 *
 * For the full copyright and license information, please read the
 * LICENSE.md file that was distributed with this source code.
 */

use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;

/**
 * ### Random: Number Generator
 *
 * Generates a random number. The default minimum number is
 * set to 100000 in order to generate a longer integer string
 * representation. Decimal values can be generated as well.
 *
 * @author Claus Due <claus@namelesscoder.net>
 * @package Vhs
 * @subpackage ViewHelpers\Random
 */
class NumberViewHelper extends AbstractViewHelper {

	/**
	 * @param integer $minimum Minimum number - defaults to 100000 (max is 999999 making lengths uniform with adequate entropy)
	 * @param integer $maximum Maximum number - defaults to 999999 (min is 100000 making lengths uniform with adequate entropy)
	 * @param integer $minimumDecimals Minimum number of also randomized decimal digits to add to number
	 * @param integer $maximumDecimals Maximum number of also randomized decimal digits to add to number
	 * @return float
	 */
	public function render($minimum = 100000, $maximum = 999999, $minimumDecimals = 0, $maximumDecimals = 0) {
		$natural = rand($minimum, $maximum);
		if (0 === (integer) $minimumDecimals && 0 === (integer) $maximumDecimals) {
			return $natural;
		}
		$decimals = array_fill(0, rand($minimumDecimals, $maximumDecimals), 0);
		$decimals = array_map(function () {
			return rand(0, 9);
		}, $decimals);
		return floatval($natural . '.' . implode('', $decimals));
	}

}