<?php

class PairsAnswer extends BaseAnswer {
    public $table = "pairs_answers";
    protected $answer;
    protected $correct;
    protected $selection;
    
    public function getAnswer() {
        return $this->answer;
    }

    public function setAnswer($val) {
        $this->answer = $val;
    }
    
    public function getCorrect() {
        return $this->correct;
    }

    public function setCorrect($val) {
        $this->correct = $val;
    }
    
    public function getSelection() {
        return $this->selection;
    }

    public function setSelection($val) {
        $this->selection = $val;
    }
    
    public function getASelections() {
        $selections = array();
        foreach (split("#", $this->getAnswer()) as $sel) {
            $selections []= split(":", $sel);
        }
        return $selections;
    }
    
    public function getAClicktions() {
        $clictions = array();
        foreach (split("#", $this->getSelection()) as $cel) {
            $clicktions []= split(":", $cel);
        }
        return $clicktions;
    }
    
    public function getACorrect() {
        $corrects = split(",", $this->getCorrect());
        return $corrects;
    }
    
    public function getPoints() {
        $ca = $this->getACorrect();
        $max = count($ca);
        $pts = 0;
        foreach ($ca as $c) {
            if ($c=="correct") {
                $pts++;
            }
        }
        $percent = 0;
        if ($pts>0) {
            $percent = round(($pts/$max)*100);
        }
        return array('max'=>$max, 'pts'=>$pts, 'percent'=>$percent);
    }
    
    public function getResult() {
        $result = $this->getPoints();
        return $result['pts']." punkti ".$result['max']."-st, ".$result['percent']."%";
    }

    public function save() {
        global $kdb;
        $aid = $this->getAnswerID();
        parent::save();
        if ( $aid == null ) {
            $sql = "INSERT INTO ".$this->table." values(".$this->getAnswerID().", '".$this->getAnswer()."', '".$this->getCorrect()."', '".$this->getSelection()."')";
            $kdb->query($sql);
        } else {
            // update answer
        }
    }
}
?>