<?php

/**
 * @copyright Copyright (c) 2009-2018 ThemeCatcher (https://www.themecatcher.net)
 */
class Quform_Validator_Honeypot extends Quform_Validator_Abstract
{
    /**
     * Returns true if the given value is empty, false otherwise.
     *
     * @param   string   $value
     * @return  boolean
     */
    public function isValid($value)
    {
        return is_string($value) && $value === '';
    }

    /**
     * Get all message templates or the single message with the given key
     *
     * @param   string|null   $key
     * @return  array|string
     */
    public static function getMessageTemplates($key = null)
    {
        $messageTemplates = array();

        if (is_string($key)) {
            return array_key_exists($key, $messageTemplates) ? $messageTemplates[$key] : null;
        }

        return $messageTemplates;
    }

    /**
     * Get the default config for this validator
     *
     * @param   string|null  $key  Get the config by key, if omitted the full config is returned
     * @return  array
     */
    public static function getDefaultConfig($key = null)
    {
        $config = apply_filters('quform_default_config_validator_honeypot', array());

        $config['type'] = 'honeypot';

        if (Quform::isNonEmptyString($key)) {
            return Quform::get($config, $key);
        }

        return $config;
    }
}
