<?
//подключение конфига
require_once "config.class.php";

class URL {
    protected $amp = true;
    protected $config;
    
    public function __construct($amp = true){
        $this->config = new Config;
        $this->amp = $amp;
    }
    
    public function setAmp($amp){
        $this->amp = $amp;
    }
    
    public function getThisURL(){
        $uri = substr($_SERVER['REQUEST_URI'], 1);
        return $this->config->address.$uri;
    }
    
    
    public function getView(){
    $view = $_SERVER['REQUEST_URI'];
    $view = substr($view, 1);
    if(($pos = strpos($view, "?")) !== false)
        $view = substr($view, 0, $pos);
    if(($pos = strpos($view, "?")) === 0) 
        $view = substr($view, 0, 0);
    return $view;
    }

// Функция удаления Get-параметра из заданного URL
// Может удалять массив Get-параметров, либо один параметр
// Если параметр не был найден и/или не был удален функция возвращает false

    public function deleteGet($url, $getToDelete = false){
        if(!$getToDelete) return false;
        if(!$url) return false;
        if((strpos($url, "?")) !== false){
            $pos = strpos($url, "?");
            $get = substr($url, $pos + 1);
            $arrgetAmp = explode("&", $get);
            for($i=0; $i < count($arrgetAmp); $i++){
                $arrgetEq = explode("=", $arrgetAmp[$i]);
                $arrGet[$arrgetEq[0]] = $arrgetEq[1];
            }
            if(is_array($getToDelete)){
                for($i = 0; $i < count($getToDelete); $i++){
                    unset($arrGet[$getToDelete[$i]]);
                }
            }
            else unset($arrGet[$getToDelete]);
            $address = substr($url, 0, $pos +1);
            if(!$arrGet) return substr($address, 0, -1);
            foreach($arrGet as $key => $value){
                if($value) $p.="$key=$value&";
                else $p.="$key&";
            }
            $p = substr($p, 0, -1);
            return $address.$p;
         }
         return $url;
    }
    
//возвращает адрес сайта
    protected function returnURL($url, $address = false){
        if(!$address) $address = $this->config->address;
        if(!$url) return $address;
        if(strpos($address, $url) !== 0) return $address.$url;
        else return $address;
    }
    
    public function index(){
        return $this->returnURL("");
    }
    
    public function action (){
        return $this->returnURL("functions.php");    
    }
    
    public function notFound(){
        return $this->returnURL("notfound");
    }
    public function cart(){
        return $this->returnURL('cart');
    }
    
    public function delivery(){
        return $this->returnURL("delivery");
    }
    
    public function order(){
        return $this->returnURL("order");
    }
    
    public function contacts(){
        return $this->returnURL("contacts");
    }
    
    public function search(){
        return $this->returnURL("search");
    }
    
    public function section($id){
        return $this->returnURL("section?id=$id");
    }
    
    public function linkmessage(){
        return $this->returnURL("message");
    }
    
    public function product ($id){
        return $this->returnURL("product?id=$id");
    }
    
    public function addCart($id){
        return $this->returnURL("functions.php?func=add_cart&amp;id=$id");
    }
    
    public function delCart($id){
        return $this->returnURL("functions.php?func=del_cart&amp;id=$id");
    }
    
    public function sort_price_down(){
        return $this->sort_url("price", 1);
    }
    
    public function link_sort_price_up(){
        return $this->sort_url("price", 0);
    }
    
    public function link_sort_title_down(){
        return $this->sort_url("title", 1);
    }
    
    public function link_sort_title_up(){
        return $this->sort_url("title", 0);
    }
    
    public function isExists($file){
        $arr = explode(PATH_SEPARATOR, get_include_path());
        foreach($arr as $value){
            if(file_exists($value."/".$file.".class.php"))
                return true;
        }
        return false;
    }
    
    
    public function sort_url($sort, $up){
        $this_url = $this->getThisURL(); 
        $this_url = $this->deleteGET($this_url, array("sort", "up"));
        if((strpos($this_url, "?")) !== false) return $this_url."&sort=$sort&up=$up";
        else return $this_url."?sort=$sort&up=$up";
    }
}
?>