<?php

class Sitemap
{
    private $validLicence;
    private $licence;
    public function __construct($licence = "")
    {
        $this->licence = $licence;
        if ($this->isValidLicence($this->licence)) {
            $this->validLicence = true;
        } else {
            $this->validLicence = false;
        }
    }
    public function getCategoryPriority($data)
    {
        $time_now = date_create(date("Y-m-d H:i:s"));
        $time_was = date_create(date($data["date"]));
        $diff = date_diff($time_now, $time_was);
        $priority = "0.1";
        if ($this->validLicence) {
            $priority = $data["priority_correlation"][80];
            if ($diff->days <= 70) {
                $priority = $data["priority_correlation"][70];
            }
            if ($diff->days <= 65) {
                $priority = $data["priority_correlation"][65];
            }
            if ($diff->days <= 60) {
                $priority = $data["priority_correlation"][60];
            }
            if ($diff->days <= 30) {
                $priority = $data["priority_correlation"][30];
            }
            if ($diff->days <= 20) {
                $priority = $data["priority_correlation"][20];
            }
            if ($diff->days <= 15) {
                $priority = $data["priority_correlation"][10];
            }
            if ($diff->days <= 10) {
                $priority = $data["priority_correlation"][10];
            }
            if ($diff->days <= 5) {
                $priority = $data["priority_correlation"][5];
            }
        }
        return $priority;
    }
    public function getCategoryChangefreq($data)
    {
        $time_now = date_create(date("Y-m-d H:i:s"));
        $time_was = date_create(date($data["date"]));
        $diff = date_diff($time_now, $time_was);
        $changefreq = "yearly";
        if ($this->validLicence) {
            $changefreq = $data["changefreq_default"];
            if ($diff->days <= 365) {
                $changefreq = $data["changefreq_correlation"][365];
            }
            if ($diff->days <= 30) {
                $changefreq = $data["changefreq_correlation"][30];
            }
            if ($diff->days <= 7) {
                $changefreq = $data["changefreq_correlation"][7];
            }
            if ($diff->days <= 1) {
                $changefreq = $data["changefreq_correlation"][1];
            }
        }
        return $changefreq;
    }
    public function getProductPriority($data)
    {
        $time_now = date_create(date("Y-m-d H:i:s"));
        $time_was = date_create(date($data["date"]));
        $diff = date_diff($time_now, $time_was);
        $priority = "0.1";
        if ($this->validLicence) {
            $priority = $data["priority_correlation"][80];
            if ($diff->days <= 70) {
                $priority = $data["priority_correlation"][70];
            }
            if ($diff->days <= 65) {
                $priority = $data["priority_correlation"][65];
            }
            if ($diff->days <= 60) {
                $priority = $data["priority_correlation"][60];
            }
            if ($diff->days <= 30) {
                $priority = $data["priority_correlation"][30];
            }
            if ($diff->days <= 20) {
                $priority = $data["priority_correlation"][20];
            }
            if ($diff->days <= 15) {
                $priority = $data["priority_correlation"][10];
            }
            if ($diff->days <= 10) {
                $priority = $data["priority_correlation"][10];
            }
            if ($diff->days <= 5) {
                $priority = $data["priority_correlation"][5];
            }
        }
        return $priority;
    }
    public function getProductChangefreq($data)
    {
        $time_now = date_create(date("Y-m-d H:i:s"));
        $time_was = date_create(date($data["date"]));
        $diff = date_diff($time_now, $time_was);
        $changefreq = "yearly";
        if ($this->validLicence) {
            $changefreq = $data["changefreq_default"];
            if ($diff->days <= 365) {
                $changefreq = $data["changefreq_correlation"][365];
            }
            if ($diff->days <= 30) {
                $changefreq = $data["changefreq_correlation"][30];
            }
            if ($diff->days <= 7) {
                $changefreq = $data["changefreq_correlation"][7];
            }
            if ($diff->days <= 1) {
                $changefreq = $data["changefreq_correlation"][1];
            }
        }
        return $changefreq;
    }
    public function isValidLicence($licence)
    {
        $a_licence = $this->decodeLicence($licence);
        $licenced_site = str_replace(["http:", "https:", "//", "www."], ["", "", "", ""], $a_licence["site"]);
        $this_site = $this->get_sitename(HTTPS_SERVER);
        if ($this_site != $licenced_site && $this->get_site_without_subdomain($this_site) != $licenced_site) {
            return false;
        }
        return true;
    }
    private function decodeLicence($licence)
    {
        $res = [];
        $real_licence_code = base64_decode($licence);
        preg_match("/L32w3za9AQLzAdHd(.*)B0V12SS6HmvXkLHS/siU", $real_licence_code, $matches);
        if ($matches) {
            $res["site"] = base64_decode($matches[1]);
            unset($matches);
            preg_match("/YQwdlPAm1XW(.*)A4D7JsGzAhh2G/siU", $real_licence_code, $matches);
            if ($matches) {
                $res["time"] = base64_decode(base64_decode($matches[1]));
                unset($matches);
                preg_match("/ZqMpLshbvKddAP(.*)D5jAew2dh5aosg/siU", $real_licence_code, $matches);
                if ($matches) {
                    $res["days"] = base64_decode(base64_decode(base64_decode($matches[1])));
                    unset($matches);
                    if (count($res) < 3) {
                        return false;
                    }
                    return $res;
                }
                return false;
            }
            return false;
        }
        return false;
    }
    private function get_sitename($site)
    {
        $site = $this->get_site_domain_name($site);
        if (!preg_match("/[a-z.-]+\$/", $site)) {
            require_once DIR_SYSTEM . "library/branched_sitemap/idna_convert.class.php";
            $IDN = new idna_convert();
            $input = mb_convert_encoding($site, "utf-8", mb_detect_encoding($site));
            $site = $IDN->encode($input);
        }
        return $site;
    }
    private function get_site_domain_name($site)
    {
        $site = str_replace(["http:", "https:", "//", "www."], ["", "", "", ""], $site);
        $site = $this->get_sitename_without_dirs($site);
        return $site;
    }
    private function get_sitename_without_dirs($site)
    {
        $n = mb_strlen($site);
        $last_char = mb_substr($site, $n - 1, $n, "UTF-8");
        if ("/" == $last_char) {
            $site = mb_substr($site, 0, $n - 1, "UTF-8");
        }
        if (stristr($site, "/")) {
            $array = explode("/", $site);
            $site = $array[0];
        }
        return $site;
    }
    private function get_site_without_subdomain($site)
    {
        $a_site = explode(".", $site, 2);
        return $a_site[1];
    }
}

?>