<?php
/**
 * 2007-2021 ETS-Soft
 *
 * NOTICE OF LICENSE
 *
 * This file is not open source! Each license that you purchased is only available for 1 wesite only.
 * If you want to use this file on more websites (or projects), you need to purchase additional licenses.
 * You are not allowed to redistribute, resell, lease, license, sub-license or offer our resources to any third party.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please contact us for extra customization service at an affordable price
 *
 * @author ETS-Soft <etssoft.jsc@gmail.com>
 * @copyright  2007-2021 ETS-Soft
 * @license    Valid for 1 website (or project) for each purchase of license
 *  International Registered Trademark & Property of ETS-Soft
 */

if (!defined('_PS_VERSION_'))
    exit;

class Ets_CfUltimateCaptchaModuleFrontController extends ModuleFrontController
{
    public function init()
    {
        $this->create_image();
        die;
    }

    public function create_image()
    {
        $security_code = Tools::substr(sha1(mt_rand()), 17, 6);
        $context = Context::getContext();
        $captcha_name = Tools::getValue('captcha_name');
        if (Tools::getValue('page') == 'contact')
            $context->cookie->$captcha_name = $security_code;
        else
            $context->cookie->$captcha_name = $security_code;
        $context->cookie->write();
        if (Tools::getValue('theme') == 'colorful') {

            $image = imagecreatetruecolor(150, 35);

            $width = imagesx($image);
            $height = imagesy($image);

            $black = imagecolorallocate($image, 0, 0, 0);
            $white = imagecolorallocate($image, 255, 255, 255);
            $red = imagecolorallocatealpha($image, 255, 0, 0, 75);
            $green = imagecolorallocatealpha($image, 0, 255, 0, 75);
            $blue = imagecolorallocatealpha($image, 0, 0, 255, 75);

            imagefilledrectangle($image, 0, 0, $width, $height, $white);
            imagefilledellipse($image, ceil(rand(5, 145)), ceil(rand(0, 35)), 30, 30, $red);
            imagefilledellipse($image, ceil(rand(5, 145)), ceil(rand(0, 35)), 30, 30, $green);
            imagefilledellipse($image, ceil(rand(5, 145)), ceil(rand(0, 35)), 30, 30, $blue);
            imagefilledrectangle($image, 0, 0, $width, 0, $black);
            imagefilledrectangle($image, $width - 1, 0, $width - 1, $height - 1, $black);
            imagefilledrectangle($image, 0, 0, 0, $height - 1, $black);
            imagefilledrectangle($image, 0, $height - 1, $width, $height - 1, $black);

            imagestring($image, 10, (int)(($width - (Tools::strlen($security_code) * 9)) / 2), (int)(($height - 15) / 2), $security_code, $black);
        } else {
            $width = 100;
            $height = 30;
            $image = ImageCreate($width, $height);
            $white = ImageColorAllocate($image, 255, 255, 255);
            $black = ImageColorAllocate($image, 27, 79, 166);
            $noise_color = imagecolorallocate($image, 172, 211, 255);
            $background_color = imagecolorallocate($image, 255, 255, 255);
            //$text_color = imagecolorallocate($image, 20, 40, 100);
            ImageFill($image, 0, 0, $background_color);
            for ($i = 0; $i < ($width * $height) / 3; $i++) {
                imagefilledellipse($image, mt_rand(0, $width), mt_rand(0, $height), 1, 1, $noise_color);
            }
            for ($i = 0; $i < ($width * $height) / 150; $i++) {
                imageline($image, mt_rand(0, $width), mt_rand(0, $height), mt_rand(0, $width), mt_rand(0, $height), $noise_color);
            }
            imagestring($image, 10, 30, 6, $security_code, $black);
        }
        header("Content-Type: image/jpeg");
        ImageJpeg($image);
        ImageDestroy($image);
        exit();
    }

    /*function to convert hex value to rgb array*/
    protected function hexToRGB($colour)
    {
        if ($colour[0] == '#') {
            $colour = Tools::substr($colour, 1);
        }
        if (Tools::strlen($colour) == 6) {
            list($r, $g, $b) = array($colour[0] . $colour[1], $colour[2] . $colour[3], $colour[4] . $colour[5]);
        } elseif (Tools::strlen($colour) == 3) {
            list($r, $g, $b) = array($colour[0] . $colour[0], $colour[1] . $colour[1], $colour[2] . $colour[2]);
        } else {
            return false;
        }
        $r = hexdec($r);
        $g = hexdec($g);
        $b = hexdec($b);
        return array('r' => $r, 'g' => $g, 'b' => $b);
    }


    /*function to get center position on image*/
    protected function ImageTTFCenter($image, $text, $font, $size, $angle = 8)
    {
        $xi = imagesx($image);
        $yi = imagesy($image);
        $box = imagettfbbox($size, $angle, $font, $text);
        $xr = abs(max($box[2], $box[4])) + 5;
        $yr = abs(max($box[5], $box[7]));
        $x = (int)(($xi - $xr) / 2);
        $y = (int)(($yi + $yr) / 2);
        return array($x, $y);
    }
}