<?php

namespace bff\validation\rules;

use tpl;
use bff\validation\Rule;
use bff\validation\HasLimits;

/**
 * String rule
 * @copyright Tamaranga
 */
class IsString extends Rule
{
    use HasLimits;

    protected function defaults($params)
    {
        # make not required
        $this->min = false;
        $this->max = false;

        if (is_numeric($params)) {
            $params = ['max' => $params];
        } elseif (is_array($params) && count($params) === 2 && isset($params[0]) && isset($params[1])) {
            $params = ['min' => min($params), 'max' => max($params)];
        }
        return $params;
    }

    public function check(&$value)
    {
        if (! is_string($value)) {
            if (is_array($value)) {
                foreach ($value as $element) {
                    if (! is_string($element)) {
                        return false;
                    } elseif (! $this->check($element)) {
                        return false;
                    }
                }
                return true;
            }
            return false;
        }

        $length = mb_strlen($value);

        if ($this->max !== false && $length > $this->max) {
            $this->replace['max'] = tpl::declension($this->max, _t('', 'symbol;symbols;symbols'));
            $this->setMessage(_t('error', 'The [attribute] must be [max] or less'), false);
            return false;
        }

        if ($this->min !== false && $length < $this->min) {
            $this->replace['min'] = tpl::declension($this->min, _t('', 'symbol;symbols;symbols'));
            $this->setMessage(_t('error', 'The [attribute] must be [min] or more'), false);
            return false;
        }

        return true;
    }
}