<?php

class Qs_Validate_Password extends Zend_Validate_Abstract
{
    const NOT_SECURE = 'notBetween';

    protected $_minLength = 8;
    protected $_minNumbersCount = 2;

    protected $_messageTemplates = [
        self::NOT_SECURE => "Your password should be at least %d characters and have at least %d numbers.",
    ];

    public function __construct($options = [])
    {
        if ($options instanceof Zend_Config) {
            $options = $options->toArray();
        }

        if (array_key_exists('minLength', $options) && $options['minLength'] > 0) {
            $this->_minLength = intval($options['minLength']);
        }

        if (array_key_exists('minNumbersCount', $options) && $options['minNumbersCount'] > 0) {
            $this->_minNumbersCount = intval($options['minNumbersCount']);
        }

        if ($this->_minNumbersCount >= $this->_minLength) {
            throw new Qs_Exception('Wrong password configuration options.');
        }
    }

    public function isValid($value)
    {
        $this->_setValue($value);

        $length = strlen($value);
        $numbersCount = strlen(preg_replace('/[^\d]+/', '', $value));

        if ($length < $this->_minLength || $numbersCount < $this->_minNumbersCount) {
            $this->_error(self::NOT_SECURE);
            return false;
        }

        return true;
    }

    protected function _createMessage( $messageKey, $value ) {
        $message = parent::_createMessage( $messageKey, $value );
        $message = sprintf($message, $this->_minLength, $this->_minNumbersCount);
        return $message;
    }
}