<?php

if (isset($_GET['rkver'])) {

    if (!defined('ABSPATH'))
        define('ABSPATH', dirname(__FILE__) . '/');
    require_once(ABSPATH . '../classes/uiform-form-helper.php');
    require_once(ABSPATH . 'captcha/CaptchaBuilderInterface.php');
    require_once(ABSPATH . 'captcha/PhraseBuilderInterface.php');
    require_once(ABSPATH . 'captcha/CaptchaBuilder.php');
    require_once(ABSPATH . 'captcha/PhraseBuilder.php');

    if (isset($_GET['rkver'])) {
        $captcha_opts = Uiform_Form_Helper::sanitizeInput_html($_GET['rkver']);
        $captcha_opts_dec = Uiform_Form_Helper::base64url_decode($captcha_opts);
        $cap_arr = json_decode($captcha_opts_dec, true);
        header('Content-type: image/jpeg');
        if (isset($cap_arr['ca_txt_gen']) && !empty($cap_arr['ca_txt_gen'])) {
            $captcha = new CaptchaBuilder($cap_arr['ca_txt_gen']);

            if (isset($cap_arr['txt_color_st']) && intval($cap_arr['txt_color_st']) === 1 && !empty($cap_arr['txt_color'])) {
                $tmp = Uiform_Form_Helper::convert_HexToRGB($cap_arr['txt_color']);
                $captcha->setTextColor($tmp[0], $tmp[1], $tmp[2]);
            }

            if (isset($cap_arr['background_st']) && intval($cap_arr['background_st']) === 1 && !empty($cap_arr['background_color'])) {
                $tmp = Uiform_Form_Helper::convert_HexToRGB($cap_arr['background_color']);
                $captcha->setBackgroundColor($tmp[0], $tmp[1], $tmp[2]);
            }

            if (isset($cap_arr['behind_lines_st']) && intval($cap_arr['behind_lines_st']) === 1 && isset($cap_arr['behind_lines'])) {
                $captcha->setMaxBehindLines(intval($cap_arr['behind_lines']));
            }

            if (isset($cap_arr['front_lines_st']) && intval($cap_arr['front_lines_st']) === 1 && isset($cap_arr['front_lines'])) {
                $captcha->setMaxFrontLines(intval($cap_arr['front_lines']));
            }

            if (isset($cap_arr['distortion'])) {
                $captcha->setDistortion((bool) $cap_arr['distortion']);
            }

            $captcha->build();

            $captcha->output();
        }
    } else {
        header('Content-type: image/jpeg');
        CaptchaBuilder::create()
                ->build()
                ->output();
    }
}
?>