<?php

namespace bff\validation\rules;

use bff\validation\Rule;

/**
 * Maximum rule
 * @copyright Tamaranga
 */
class Max extends Rule
{
    /**
     * @var int
     */
    protected $max;

    /**
     * Prepare default params
     * @param mixed $params
     * @return mixed
     */
    protected function defaults($params)
    {
        if (is_numeric($params)) {
            $params = ['max' => $params];
        } elseif (is_array($params)) {
            $first = reset($params);
            if (is_numeric($first) && is_int(key($params))) {
                $params['max'] = $first;
            }
        }
        return $params;
    }

    /**
     * @param int $max
     * @return bool
     */
    protected function setMax($max): bool
    {
        if (! is_numeric($max) || intval($max) <= 0) {
            return false;
        }

        $this->max = $this->replace['max'] = intval($max);

        return true;
    }

    /**
     * @param int $max
     * @return static
     */
    public function max($max)
    {
        $this->setMax($max);

        return $this;
    }

    public function check(&$value)
    {
        $number = $this->toNumber($value);
        if ($number === false) {
            return false;
        }

        return $number <= $this->max;
    }

    /**
     * Default message
     * @return string
     */
    public function defaultMessage(): string
    {
        return _t('error', 'The [attribute] must be less than [max]');
    }
}