<?php
class TestFolder {
    private $id = NULL;
    private $folder = NULL;
    private $type = "TestFolder";
    private $name = "Test Folder";
    private $actions;
    private $title;
    private $description;
    private $created;
    private $modified;
    private $creator;
    private $status = 'draft';
    private $security = 'private';
    private $rights;
    private $info;
    private $authors;
    private $position;
    private $locked = 0;
    private $test = 0;
    private $cache = NULL;
    private $cached;
    
    function __construct($id = NULL) {
        if ($id) {
            $data = $this->load($id);
        }
        if ($this->getLocked()) {
            $this->setActions(array("view"=>_("Contents"), "preview"=>_("Preview"), "results"=>_("Results")));
        } else {
            $this->setActions(array("view"=>_("View"), "edit"=>_("Edit"), "new"=>_("New test asset"), "import"=>_("Import test asset")));
        }
    }
    
    function load($id) {
        $id = (int) $id;
        if (is_numeric($id)) {
            $data = query_row("SELECT * FROM " . DB_PREFIX . "test_folder WHERE id='{$id}'");
            if ($data) {
                $this->id = $id;
                $this->setFolder($data->folder);
                $this->setTitle($data->title);
                $this->setDescription($data->description);
                $this->setCreated($data->created);
                $this->setModified($data->modified);
                $this->setCreator($data->creator);
                $this->setInfo($data->info);
                $this->setRights($data->rights);
                $this->setStatus($data->status);
                $this->setSecurity($data->security);
                $this->setAuthors($data->authors);
                $this->setPosition($data->position);
                $this->setLocked($data->locked);
                $this->setTest($data->test);
                //$this->setCache(unserialize(base64_decode($data->cache)));
                $this->setCached($data->cached);
                return $data;
            }
        }
        return false;
    }
    
    function create() {
        $this->setCreator(get_logged_in_user()->getId());
        if (!$this->getFolder()) $this->setFolder("NULL");
        $insert = query_insert("INSERT INTO " . DB_PREFIX . "test_folder (folder, title, description, created, creator, info, rights, authors) values (".$this->getFolder().", '".mysql_real_escape_string($this->getTitle())."', '".mysql_real_escape_string($this->getDescription())."', NOW(), '".$this->getCreator()."', '".mysql_real_escape_string($this->getInfo())."', '".mysql_real_escape_string($this->getRights())."', '".mysql_real_escape_string($this->getAuthors())."')");
        return $insert;
    }
    
    function save() {
        $update = query_update("UPDATE " . DB_PREFIX . "test_folder SET title='".mysql_real_escape_string($this->getTitle())."', description='".mysql_real_escape_string($this->getDescription())."', modified=NOW(), info='".mysql_real_escape_string($this->getInfo())."', rights='".mysql_real_escape_string($this->getRights())."', authors='".mysql_real_escape_string($this->getAuthors())."' WHERE !locked AND id=".$this->getId());
        if ($update) {
            return $this->id;
        }
        return false;
    }
    
    function copy($locked=false) {
        if (!$locked) $this->setTitle($this->getTitle()." ("._("Copy of").")");
        $content = query_rows("SELECT id, type FROM " . DB_PREFIX . "base_object WHERE !locked AND folder=".$this->getId()." ORDER BY position ASC");
        $some_failed = false;
        $copy = $this->create();
        if ($copy) {
            if ($locked) $lock = $this->lock($copy);
            $psy = new Psyhvel();
            foreach ($content as $cont) {
                $type = $psy->loadType($cont->type, $cont->id);
                if ($type) {
                    $type->setFolder($copy);
                    $test_id = $type->copy($locked);
                } else {
                    $some_failed = true;  
                }
            }
        }
        if ($some_failed) return false;
        return $copy;
    }
    
    function cut($locked=false) {
        if (!$this->getFolder()) $this->setFolder("NULL");
        $cut = query_update("UPDATE " . DB_PREFIX . "test_folder SET folder=".$this->getFolder()." WHERE !locked AND id=".$this->getId());
        return $cut;
    }
    
    function lock($id=null) {
        if (!$id) $id = $this->getId();
        return query_update("UPDATE " . DB_PREFIX . "test_folder SET locked=1 WHERE id=".$id);
    }
    
    function assign($test_id) {
        $assigned = $this->copy(true);
        if ($assigned) {
            $max_pos = query_row("SELECT MAX(position) as max_pos FROM " . DB_PREFIX . "test_folder WHERE locked AND test=".$test_id)->max_pos;
            if ($max_pos) {
                $max_pos++;
            } else {
                $max_pos = 1;
            }
            return query_update("UPDATE " . DB_PREFIX . "test_folder SET test=".$test_id.", position=".$max_pos." WHERE id=".$assigned);    
        }
    }
    
    function build($data) {
        if (!isset($data["title"]) || empty($data["title"])) {
      	    return false;
      	} else {
            $this->setTitle($data["title"]);
            if (isset($data["folder"])) $this->setFolder($data["folder"]);
            if (isset($data["description"])) $this->setDescription($data["description"]);
            if (isset($data["rights"])) $this->setRights($data["rights"]);
            if (isset($data["info"])) $this->setInfo($data["info"]);
      	}
      	if ($this->id > 0) {
            return $this->save();
        } else {
            return $this->create();
        }
    }
    
    function delete() {
        if (is_numeric($this->getId()) && $this->getId() > 0) {
            if (is_admin() || $this->creator==get_logged_in_user()->getId()) {
                $psyhvel = new Psyhvel();
                $content = query_rows("SELECT id, type FROM " . DB_PREFIX . "base_object WHERE folder=".$this->getId());
                $some_failed = false;
                if (count($content) > 0) {
                    foreach ($content as $cont) {
                        if (!$psyhvel->deleteType($cont->type, $cont->id)) {
                            $some_failed = true;
                        }
                    }
                }
                if (!$some_failed) {
                    return query("DELETE FROM " . DB_PREFIX . "test_folder WHERE id=".$this->getId());
                }
            }
        }
        return false;
    }
    
    function move_up() {
        
    }
    
    function move_down() {
        
    }
    
    public function getId() {
        return $this->id;
    }
    
    public function getType() {
        return $this->type;
    }
    
    public function getFolder() {
        return $this->folder;
    }
    
    function setFolder($folder) {
        $this->folder = $folder;
    }
    
    public function getName() {
        return $this->name;
    }
    
    function getActions() {
        return $this->actions;
    }
    
    function setActions($actions) {
        $this->actions = $actions;
    }
    
    public function getLocked() {
        return $this->locked;
    }
    
    public function setLocked($locked) {
        if ($locked) {
            $this->locked = 1;
        } else {
            $this->locked = 0;
        }
    }
    
    public function getPosition() {
        return $this->position;
    }
    
    function setPosition($pos) {
        $this->position = $pos;
    }
    
    public function getTitle() {
        return $this->title;
    }
    
    function setTitle($title) {
        $this->title = $title;
    }
    
    public function getDescription() {
        return $this->description;
    }
    
    function setDescription($desc) {
        $this->description = $desc;
    }
    
    public function getCreated() {
        return $this->created;
    }
    
    function setCreated($created) {
        $this->created = $created;
    }
    
    public function getModified() {
        return $this->modified;
    }
    
    function setModified($modified) {
        $this->modified = $modified;
    }
    
    public function getCreator() {
        return $this->creator;
    }
    
    function setCreator($creator) {
        $this->creator = $creator;
    }
    
    public function getAuthors() {
        return $this->authors;
    }
    
    function setAuthors($authors) {
        $this->authors = $authors;
    }
    
    public function getRights() {
        return $this->rights;
    }
    
    function setRights($rights) {
        $this->rights = $rights;
    }
    
    public function getInfo() {
        return $this->info;
    }
    
    function setInfo($info) {
        $this->info = $info;
    }
    
    public function getStatus() {
        return $this->status;
    }
    
    function setStatus($status) {
        $this->status = $status;
    }
    
    public function getSecurity() {
        return $this->security;
    }
    
    function setSecurity($security) {
        $this->security = $security;
    }
    
    public function getTest() {
        return $this->test;
    }
    
    function setTest($test) {
        $this->test = $test;
    }
    
    public function getCache() {
        if (is_numeric($this->getId())) {
            $row = query_row("SELECT html FROM " . DB_PREFIX . "test_folder_cache WHERE test_folder=".$this->getId());
            if (isset($row->html)) {
                return $row->html;
            }
        }
        return false;
    }
    
    public function getCacheRunning() {
        if (is_numeric($this->getId())) {
            $row = query_row("SELECT count(id) as running_count FROM " . DB_PREFIX . "test_folder_cache WHERE running=TRUE");
            if (isset($row->running_count)) {

                return $row->running_count;
            }
        }
        return 0;
    }
    
    public function getCSVCache() {
        if (is_numeric($this->getId())) {
            $row = query_row("SELECT csv FROM " . DB_PREFIX . "test_folder_cache WHERE test_folder=".$this->getId());
            if (isset($row->csv)) {
                return $row->csv;
            }
        }
        return false;
    }
    
    public function getCached() {
        return $this->cached;
    }
    
    function setCached($cached) {
        $this->cached = $cached;
    }
    
    function repositionContents($positions) {
        $positionCounter = 1;
        foreach ($positions as $position_id) {
            query_update("UPDATE " . DB_PREFIX . "base_object SET position = " . $positionCounter . " WHERE id = " . $position_id." AND folder=".$this->getId());
            $positionCounter = $positionCounter + 1;
        }
        return true;
    }
    
    function getContent($pos) {
        if (is_numeric($this->getId())) {
            $row = query_row("SELECT id, type FROM " . DB_PREFIX . "base_object WHERE locked AND folder=".$this->getId()." ORDER BY position ASC LIMIT 1 OFFSET ".$pos);
            return $row;
        }
        return false;
    }
    
    function getContents() {
        if (is_numeric($this->getId())) {
            $rows = query_rows("SELECT * FROM " . DB_PREFIX . "base_object WHERE !locked AND folder=".$this->getId()." ORDER BY position ASC");
            return $rows;
        }
        return false;
    }
    
    function getTestContents() {
        if (is_numeric($this->getId())) {
            $rows = query_rows("SELECT * FROM " . DB_PREFIX . "base_object WHERE locked AND folder=".$this->getId()." ORDER BY position ASC");
            return $rows;
        }
        return false;
    }
    
    function getTestAnswers() {
        $psyhvel = new Psyhvel();
        $contents = $this->getTestContents();
        $answers = array();
        $examinees = array();
        $groups = query_rows("SELECT group_id FROM " . DB_PREFIX . "test_groups WHERE test_id=" . $this->getTest() . " ORDER BY group_id ASC");
        foreach ($groups as $group) {
            foreach (query_rows("SELECT examinee_id FROM " . DB_PREFIX . "group_relations WHERE group_id=".$group->group_id." ORDER BY examinee_id") as $examinee) {
              $examinees []= $examinee->examinee_id;
            }
        }
        foreach ($contents as $content) {
            if (!substr_compare($content->type, "Task", -4, 4) || $content->type == "Questionnaire") {
                $obj = $psyhvel->loadType($content->type, $content->id);
                if ($obj) {
                    $answers []= $obj->collect($examinees);
                }
            }
        }
        return $answers;
    }

    function doTimer(&$header, &$answers, $data) {
        if (array_key_exists("title", $data["timer"])) {
            $header[1][$data['id']] = array('title' => _("Timer"), 'colspan'=>3, 'rowspan'=>1);
            foreach($data["timer"]["title"] as $t_key => $t_val) {

                $header[2][$data['id']][$t_key] = array('title' => $t_val, 'colspan'=>1, 'rowspan'=>1);
                unset($data["timer"]["title"][$t_key]);
            }
            if (count($data["timer"]["title"])==0) unset($data["timer"]["title"]);
        }
        foreach($data["timer"] as $examinee_id => $examinee_answer) {
            foreach($examinee_answer as $a_key => $a_val) {
                $answers[$examinee_id][$data['id']][$a_key] = $a_val;
            }
        }
    }
    
    function doAnswers(&$header, &$answers, $data) {
        if (array_key_exists("title", $data["answers"])) {
            //var_dump($data["answers"]["title"]);
            foreach($data["answers"]["title"] as $t_key => $t_val) {
                 $header[2][$data['id']][$t_key] = array('title' => $t_val, 'colspan'=>1, 'rowspan'=>1);
                 
                 unset($data["answers"]["title"][$t_key]);
            }
            if (count($data["answers"]["title"])==0) unset($data["answers"]["title"]);
        }
        foreach($data["answers"] as $examinee_id => $examinee_answer) {
            foreach($examinee_answer as $a_key => $a_val) {
                $answers[$examinee_id][$data['id']][$a_key] = $a_val;
            }
        }
    }
    
    function doChoices(&$header, &$answers, $data) {
        foreach ($data["choices"] as $c_1) {
            if (array_key_exists("answers", $data)) {
                $this->doAnswers($header, $answers, $c_1);
            }
        }
    }
    
    function doQuestions(&$header, &$answers, $data) {
        foreach ($data["questions"] as $q_1) {
            if (array_key_exists("id", $q_1)) {
                $header[1][$q_1['id']] = array('title' => $q_1['title'], 'colspan'=>0, 'rowspan'=>1);
                if (array_key_exists("choices", $q_1)) {
                    $header[0][$data['id']]['colspan'] = $header[0][$data['id']]['colspan'] + count($q_1["choices"]);
                    $header[1][$q_1['id']]['colspan'] = $header[1][$q_1['id']]['colspan'] + count($q_1["choices"]);
                    $this->doChoices($header, $answers, $q_1);
                }
                if (array_key_exists("answers", $q_1)) {
                    $answer_count = 0;
                    if (array_key_exists("title", $q_1["answers"])) $answer_count = 1;
                    $header[0][$data['id']]['colspan'] = $header[0][$data['id']]['colspan'] + $answer_count;
                    $header[1][$q_1['id']]['colspan'] = $header[1][$q_1['id']]['colspan'] + $answer_count;
                    $this->doAnswers($header, $answers, $q_1);
                }
            }
        } 
    }
    
    function doGenerate(&$header, &$answers) {
        $data = $this->getTestAnswers();
        foreach ($data as $d_1) {
            if (array_key_exists("id", $d_1)) {
                $header[0][$d_1['id']] = array('title' => $d_1['title'], 'colspan'=>0, 'rowspan'=>1);
                if (array_key_exists("timer", $d_1) && array_key_exists("title", $d_1["timer"])) {
                    $header[0][$d_1['id']]['rowspan'] = 1;
                    $header[0][$d_1['id']]['colspan'] = $header[0][$d_1['id']]['colspan'] + count($d_1["timer"]["title"]);
                    $this->doTimer($header, $answers, $d_1);
                }
                if (array_key_exists("answers", $d_1) && array_key_exists("title", $d_1["answers"])) {
                    $header[0][$d_1['id']]['rowspan'] = 2;
                    $header[0][$d_1['id']]['colspan'] = $header[0][$d_1['id']]['colspan'] + count($d_1["answers"]["title"]);
                    $this->doAnswers($header, $answers, $d_1);
                }
                if (array_key_exists("choices", $d_1)) {
                    $header[0][$d_1['id']]['rowspan'] = 2;
                    $header[0][$d_1['id']]['colspan'] = $header[0][$d_1['id']]['colspan'] + count($d_1["choices"]);
                    $this->doChoices($header, $answers, $d_1);
                }
                if (array_key_exists("questions", $d_1)) {
                    $header[0][$d_1['id']]['rowspan'] = 1;
                    $this->doQuestions($header, $answers, $d_1);
                }
            }
        }
    }
    
    function cacheAnswers() {
        $cache_id = query_update("INSERT INTO " . DB_PREFIX . "test_folder_cache (test_folder, created) values (".$this->getId().", NOW()) ON DUPLICATE KEY UPDATE created=NOW(), stopped=NULL, running=TRUE, id=LAST_INSERT_ID(id)");
        $cache_id = mysql_insert_id();
        $header = array(array(), array(), array());
        $answers = array();     
        $this->doGenerate(&$header, &$answers);
        
        $renderedData = $this->renderAnswersToTableFormat($header, $answers);
        $examinees = 0;
        if ($cache_id && $renderedData) {
            $html = $renderedData['html'];
            $csv = $renderedData['csv'];
            $cached = query_update("UPDATE " . DB_PREFIX . "test_folder_cache SET html='".mysql_real_escape_string($html)."', csv='".mysql_real_escape_string($csv)."', stopped=NOW(), running=FALSE WHERE id=" . $cache_id);
            query_update("UPDATE " . DB_PREFIX . "test_folder SET cached=NOW() WHERE id=".$this->getId());     
        } else if ($cache_id && !$renderedData) {
            $cached = query_update("UPDATE " . DB_PREFIX . "test_folder_cache SET (error) values ('No Data was rendered') WHERE id=" . $cache_id);
        }

    }
    
    function showRenderedResults() {
        $refresh = get_input('refresh', false);
        if ($refresh) {
            ignore_user_abort(true);
            set_time_limit(0);
            if (session_id()) session_write_close();
            $this->cacheAnswers();
            //exit;
            //forward("tests/TestFolder/".$this->getId()."/results");
        } else if (get_input('stripHtml', false)) { 
            return ststrip_tags($this->getCache(), "<table><th><tr><td>");
        } else if (get_input('ripHtml', false)) { 
            return strip_tags($this->getCache());
        } else if ($this->getCache()) {
            return $this->getCache();
        }        
        return "0";
    }
    
    function renderAnswersToTableFormat($header, $answers) {        
        $table = '<table border="1" id="results_table">';
        $csv = "";
        if (count($header[0]) > 0) {
            $table .= '<tr>';
            $rowspan_shift = 0;
            if (count($header[1]) == 0) {
                $rowspan_shift = -1;
            }
            $table .= '<th rowspan="'.(3+$rowspan_shift).'">'._("Examinee").'</th>';
            $row = array();
            $row []= '"'._("Examinee").'"';
            foreach ($header[0] as $h) {
                $header_title = strip_tags($h['title']);
                $table .= '<th rowspan="'.($h['rowspan']+$rowspan_shift).'" colspan="'.$h['colspan'].'">'.$header_title.'</th>';
                $row []= '"'.$header_title.'"';
                for ($i=0; $i<($h['colspan']-1); $i++) {
                    $row []= '""';
                }
            }
            $table .= '</tr>';
            $csv .= strip_line_breaks(implode(",", $row))."\n";
        }
        if (count($header[1]) > 0) {
            $table .= '<tr>';
            $row = array();
            $row []= '""';
            foreach ($header[1] as $h) {
                $header_title = strip_tags($h['title']);
                $table .= '<th colspan="'.$h['colspan'].'">'.$header_title.'</th>';
                $row []= '"'.$header_title.'"';
                for ($i=0; $i<($h['colspan']-1); $i++) {
                    $row []= '""';
                }
            }
            $table .= '</tr>';
            $csv .= strip_line_breaks(implode(",", $row))."\n";

        }
        if (count($header[2]) > 0) {
            $table .= '<tr>';
                        $row = array();
            $row []= '""';
            foreach ($header[2] as $head) {
                foreach ($head as $h) {
                    $header_title = strip_tags($h['title']);
                    $table .= '<th>'.$header_title.'</th>';
                    $row []= '"'.$header_title.'"';
                }
            }
            $table .= '</tr>';
            $csv .= strip_line_breaks(implode(",", $row))."\n";
        }
        foreach ($answers as $examinee => $ad) {
            $q = query_row("SELECT username FROM " . DB_PREFIX . "examinees WHERE id=".$examinee);
            if ($q) {
                $examinee = $q->username;
            }
            $table .= '<tr>';
            $table .= '<th>'.$examinee.'</th>';
            $row = array();
            $row []= '"'.$examinee.'"';
            foreach ($ad as $k => $a) {
                foreach ($a as $av) {
                    $answerv = strip_tags($av);
                    $table .= '<td>'.$answerv .'</td>';
                    $row []= '"'.$answerv .'"';
                }
            }
            $table .= '</tr>';
            $csv .= strip_line_breaks(implode(",", $row))."\n";
        }
        $table .= '</table>';
        return array('html'=>$table, 'csv'=>stripcslashes($csv));
    }
    
    function buildFromXML($obj, $folder=0) {
        $this->setTitle($obj->title[0][0]);
        $this->setDescription($obj->description[0][0]);
        $this->setAuthors($obj->author[0][0]);
        if (!empty($obj->rights[0][0])) $this->setRights(implode("\n", $obj->rights[0][0]));
        if (!empty($obj->info[0][0])) $this->setInfo(implode("\n", $obj->info[0][0]));
        $this->setCreated($obj->created[0][0]);
        return $this->create();
    }
    
    public function getBaseXML() {
        $xml = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<object version=\"2\">\n";
        $xml .= "<type>".$this->getType()."</type>\n";
        $xml .= "<created><![CDATA[".$this->getCreated()."]]></created>\n";
        $xml .= "<title><![CDATA[".$this->getTitle()."]]></title>\n";
        $xml .= "<description><![CDATA[".$this->getDescriotion()."]]></description>\n";
        $xml .= "<author><![CDATA[".$this->getCreator()."]]></author>\n";
        $xml .= "<rights><![CDATA[".$this->getRights()."]]></rights>\n";
        $xml .= "<info><![CDATA[".$this->getInfo()."]]></info>\n";
        $xml .= $this->getObjectsXML();
        $xml .= "</object>\n";
        return $xml;
     }
     
    public function getNavigationTree($handlername="library") {
         $nav = array();
         $level=1;
         $psy = new Psyhvel();
         if ($handlername=="library") {
             if ($this->getFolder()) {
                 $parent = $psy->loadType("Folder", $this->getFolder());
                 $nav []= array('title' => $parent->getTitle(), 'url'=>$handlername."/".$parent->getType()."/".$parent->getId()."/view", 'current'=>false, 'level'=>1);
                 $level=2;
             }
             $nav []= array('title' => $this->getTitle(), 'url'=>$handlername."/".$this->getType()."/".$this->getId()."/view", 'current'=>true, 'level'=>$level);
         } else if ($handlername=="tests") {
             $nav []= array('title' => $this->getTitle(), 'url'=>$handlername."/Test/".$this->getTest(), 'current'=>true, 'level'=>$level);
         }
         return $nav;
    }

    public function getTestToPlay() {
        return new Test($this->getId());
    }

    public function getAssetToPlay() {
        $asset_id = 0;
        if (isset($_SESSION['test_preview']) && isset($_SESSION['test_preview'][$this->getId()]) && is_numeric($_SESSION['test_preview'][$this->getId()])) {
            $asset_id = $_SESSION['test_preview'][$this->getId()];
        }
        $asset = $this->getContent($asset_id);
        $psy = new Psyhvel();
        return $psy->loadType($asset->type, $asset->id);
    }

    public function getCurrentPage() {
        if (isset($_SESSION['test_preview']) && isset($_SESSION['test_preview'][$this->getId()]) && is_numeric($_SESSION['test_preview'][$this->getId()])) {
            return $_SESSION['test_preview'][$this->getId()];
        }
        return 0;
    }

    public function getMaxPage() {
        return count($this->getTestContents());
    }

    public function zipContents(&$zip, $dirname="") {
        $psy = new Psyhvel();
        if ($this->getLocked()) {
            $conts = $this->getTestContents();
        } else {
            $conts = $this->getContents();
        }
        $nr = 1;
        foreach ($conts as $cont) {
            $loaded = $psy->loadType($cont->type, $cont->id);
            $shotname = $dirname . sanitize_file_name($nr."_".$loaded->getTitle());
            if ($cont->screenshot > 0) {
                $screenshot = new Screenshot($cont->screenshot);
                if ($screenshot && $screenshot->location !=  "") {
                    $zip->addFromString($shotname . ".png", file_get_contents($screenshot->location));
                } else {
                    $zip->addFromString($shotname . "_ERROR_SYSTEM_FAULT.txt", "Test: " . $loaded->getTitle() . ". Screenshot error! Screenshot removed from system!");
                }
            } else {
                $test_shooter_type = get_input('type', false);
                if ($test_shooter_type == "TestFolder") {
                    forward("includes/psyhvel/actions/download_file.php?type=TestFolder&id={$this->getId()}&start_shoot_screenshots=1");
                } else {
                    forward("includes/psyhvel/actions/download_file.php?type=Test&id={$this->getTest()}&start_shoot_screenshots=1");
                }
            }
            $nr++;
        }
    }

    public function zipScreenshots() {
        $zip_filename = sanitize_file_name("Screenshots_" . $this->getTitle());
        $zip_name = SCREENSHOT_STORE . $zip_filename;
        $zip = new ZipArchive;
        $res = $zip->open($zip_name.".zip", ZipArchive::CREATE);
        if ($res === TRUE) {
            $this->zipContents($zip);
            $zip->close();
            header("Content-type: application/zip");
            header("Content-Disposition: attachment; filename=\"".$zip_filename.".zip\"");
            header("Content-Length: ".filesize($zip_name.".zip"));
            header("Pragma: no-cache");
            header("Expires: 0");
            readfile($zip_name.".zip");
            unlink($zip_name.".zip");
        }
    }

    public function setupTestShooter() {
        $this->nextTestShooter();
    }

    public function nextTestShooter() {
        $test = $this->getId();
        if ($test) {
            unset($_SESSION['test_preview'][$test]);
            forward("tests/TestFolder/{$test}/preview?test_shooter_id=self");
        }
    }

}
?>