<?php

class dirbrowser {

    private $dirtobrowse;
    private $scandir;
    private $pathvar;
    private $path;
    private $urlpath;
    private $aantal;
    private $dirs;
    private $list = '';
    private $status;
    private $error;
    private $ignorepath = array();
    private $urlbase64 = false;
    private $url;
    private $linkurl;

    public function getStatus() {

        return $this->status;

    }

    public function setLinkURL($i) {

        $this->linkurl = $i;

    }

    private function ifPathVarSet() {

        if(isset($this->pathvar)) {

            return true;

        }
        else {

            return false;

        }

    }

    public function urlEncode($i) {

        $this->urlbase64 = $i;
    
    }

    private function setStatus($i) {

        $this->status = $i;

    }


    public function setIgnorePath($i) {

        $this->ignorepath = $i;

    }

    public function setURL($i) {

        $this->url = $i;

    }

    public function getError() {

        return $this->error;

    }

    private function setError($i) {

        $this->error = $i;

    }

    public function setDTB($dirtobrowse) {

        $this->dirtobrowse = $dirtobrowse;

    }

    public function setPathVar($i) {

        $this->pathvar = $i;

    }

    private function getDTB() {

        return $this->dirtobrowse;

    }

    private function getLinkURL() {

        return $this->linkurl;

    }

    private function genScandir($i) {

        if($sd = scandir($i)) {

            $this->scandir = $sd;
            return true;

        }
        else {

            return false;

        }
        

    }

    private function validatePath() {

        if(array_search("..",$this->dirs) !== false) {
  
              return false;
  
        }
        else {

            return true;

        }

    }

    private function pathExists() {

        if(is_dir($this->path)) {
  
              return true;
  
        }
        else {

            return false;

        }

    }

    private function getPathVar() {

        if($this->urlbase64 == true) {

            return base64_decode($this->pathvar);

        }
        else {

            return $this->pathvar;

        }

    }

    private function genSafeVar($i) {

        if($this->urlbase64 == true) {

            return base64_encode($i);

        }
        else {

            return $i;

        }

    }

    private function bepaalPath() {

        if($this->ifPathVarSet()) {

            $pathvar = $this->getPathVar();
            $this->path = $this->getDTB().$pathvar;
            $this->urlpath = $pathvar;
            $this->dirs = explode("/",$this->urlpath);
            $this->aantal = count($this->dirs) - 1;
        }
        else {
            $this->path = $this->getDTB();
            $this->urlpath = '';
            $this->dirs = array();
        }

    }

    private function toList($i) {

        $this->list .= $i;

    }

    public function getList() {

        return $this->list;

    }

    public function genList() {

        
        $this->bepaalPath();

        if($this->validatePath()) {

            if($this->pathExists()) {

                if($this->genScandir($this->path)) {

                    $dirarray = $this->scandir;

                    $this->toList('<table>');
                    if($this->ifPathVarSet()) {
                        if(($this->dirs[0] == "") && ($this->dirs[1] == "")) {
                            $nieuwe_dir = "";
                        } else if(($this->dirs[1] != "") && ($this->dirs[2] == "")) {
                            $nieuwe_dir = "";
                        } else {  
                            for($i = 0;$i < $this->aantal;$i++) {
                                $nieuwe_dir = $nieuwe_dir."/".$this->dirs[$i];
                            }
                            $nieuwe_dir = substr($nieuwe_dir,1);
                        }  
                        if($this->urlpath !== "")  {
                            $this->toList('<tr><td><a href="'.$this->url.$this->genSafeVar($nieuwe_dir).'">Bovenliggende map</a></tr></td>'); 
                        }
                    }
                    
                    foreach($dirarray as $itemid => $itemname) {
                        if(!in_array($itemname,$this->ignorepath)) {
                            if(!is_dir($this->path."/".$itemname)) {
                                $this->toList('<tr><td><a href="'.$this->getLinkURL().$this->urlpath.'/'.$itemname.'">'.$itemname.'</a></td></tr>');
                            }
                            else {
                                $this->toList('<tr><td><a href="'.$this->url.$this->genSafeVar($this->urlpath.'/'.$itemname).'">'.$itemname.'</a></td></tr>');
                            }
                        }
                    
                    }
                    
                    $this->toList('</table>');
                    $this->setStatus(true);

                }
                else {
    
                    $this->setError("#3: Unable to scandir");
                    $this->setStatus(false);    
    
                }

            }
            else {

                $this->setError("#2: Directory doesn't exist");
                $this->setStatus(false);    

            }

        }
        else {

            $this->setError("#1: Action not allowed");
            $this->setStatus(false);

        }
        

    }


}

?>