<?php
require_once(dirname(__FILE__)."/Test.php");
require_once(dirname(__FILE__)."/TestAnswer.php");
class TestPlayer {
    public $type="TestPlayer";
    private $answer = NULL;
    private $test = NULL;
    private $examinee = NULL;
    private $chapter = NULL;
    private $chapter_object = NULL;
    private $asset = NULL;
    
    
    function __construct() {
        $this->examinee = get_examinee();
        if (isset($this->examinee) AND $this->examinee->getId() > 0) {
                    
            $this->test = $this->findTest();
            if ($this->test) {
                $this->answer = $this->findAnswer();
                $this->answer->setTest($this->test->getId());
                $this->chapter_object = $this->loadType("TestFolder", $this->getChapter());
                if ($this->chapter_object) {
                    if ($this->getAnswer()->hasChapter($this->getChapter())) {
                        if ($asset_d = $this->chapter_object->getContent($this->getCurrentPage())) {
                            $this->asset = $this->loadType($asset_d->type, $asset_d->id);
                        } else {
                            $this->answer->resetChapter();
                            forward(WWW_ROOT."test");
                        }
                    }
                }
            }
        }
    }
    
    function actionCentral($page) {
        if (count($page>1)){
            if ($page[0]=="TestFolder") {
               if ($this->getAnswer()->getId() <= 0) {
                   $this->startAnswer();
                   $this->answer = $this->findAnswer();
               }
               $this->nextChapter($page[1]);           
               forward(WWW_ROOT."test");
            }
        } 
    }
    
    function findTest() {
        $groups = $this->examinee->getGroups();
        $test_ids = array();
        foreach ($groups as $group) {
            foreach (query_rows("SELECT test_id FROM " . DB_PREFIX . "test_groups g LEFT JOIN  " . DB_PREFIX . "test t ON g.test_id=t.id WHERE g.group_id=".$group." AND t.active") as $t) {
                $test_ids []= $t->test_id;
            }
        }
        if (count($test_ids)>0) {
            // XXX if more than one first is popped
            return new Test($test_ids[0]);  
        }
        return false;
    }
    
    function findAnswer() {
        if ($this->test) {
            $answer = query_row("SELECT id FROM " . DB_PREFIX . "answer WHERE test=".$this->test->getId()." AND examinee=".$this->examinee->getId());
            if ($answer) {
                return new TestAnswer($answer->id); 
            }
        }
        return new TestAnswer(); 
    }
    
    public function getAnswer() {
        return $this->answer;
    }
    
    public function getTest() {
        return $this->test;
    }
    
    public function getTestNumbered() {
        return $this->getTest()->getNumbered();
    }
    
    public function getExaminee() {
        return $this->examinee;
    }
    
    public function getCurrentPage() {
        if (isset($this->answer)) {
            return $this->answer->getCurrentPage();
        }
        return false;
    }
    
    public function getLastPage() {
        if (isset($this->answer)) {
            return $this->answer->getLastPage();
        }
        return false;
    }
    
    public function goStart($chap) {
        if (isset($this->answer) && $chap) {
            return $this->answer->createChapter($chap);
        }
        return false;
    }
    
    public function goNext($data) {
        if (isset($this->answer)) {
            if ($this->asset->answer($data)) {
                return $this->answer->nextPage();
            }
        }
        return false;
    }
    
    public function startAnswer() {
        if (isset($this->answer)) {
            return $this->answer->create();
        }
        return false;
    }
    
    public function stopAnswer() {
        if (isset($this->answer)) {
            return $this->answer->stop();
        }
        return false;
    }
    
    public function nextChapter($chap) {
        if (isset($this->answer)) {
            return $this->answer->nextChapter($chap);
        }
        return false;
    }
    
    public function getChapter() {
        if (isset($this->answer)) {
            return $this->answer->getChapter();
        }
        return false;
    }
    
    public function getChapterObject() {
        return $this->chapter_object;
    }
    
    public function getChapterNr() {
        return $this->chapter_object->getPosition();
    }
    
    public function getPageNr() {
        return $this->getCurrentPage() + 1;
    }
    
    public function getAsset() {
        return $this->asset;
    }
    
    function loadType($type, $id = false) {
        if ($id) {
            if (is_file(dirname(__FILE__)."/".$type.".php")) {
                require_once(dirname(__FILE__)."/".$type.".php");
                return new $type($id);  
            }
        }
        return false;  
    }
}
?>