<?php
class SliderTask extends BaseTest {
    private $options = "";
    private $corrects = "";
    
    function __construct($id = NULL) {
        $this->setType("SliderTask");
        $this->setName("Slider Task");
        $this->setTable("slider_task");
        $this->setActions(array("view"=>_("View"), "edit"=>_("Edit")));
        if ($id) {
            $data = $this->load($id);
            if ($data) {
                $this->setOptions($data->options);
                $this->setCorrects($data->corrects);
            }
        }
    }
    
    function create() {
        if ($id = parent::create()) {
            $insert = query_insert("INSERT INTO " . DB_PREFIX . $this->getTable() . " (base_id, options, corrects) values (".$id.", '".mysql_real_escape_string($this->getOptions())."', '".mysql_real_escape_string($this->getCorrects())."')");
            return $id;
        }
        return false; 
    }
    
    function save() {
        if (parent::save()) {
            query_update("UPDATE " . DB_PREFIX . $this->getTable() . " SET options='".mysql_real_escape_string($this->getOptions())."', corrects='".mysql_real_escape_string($this->getCorrects())."' WHERE base_id=".$this->getId());
            return $this->getId();
        }
        return false;     
    }
    
    function copy($locked=false) {
        $copy = $this->create();
        if ($copy && $locked) {
            $lock = $this->lock($copy);
        }
        return $copy;
    }
    
    function answer($data) {
        $examinee = get_examinee()->getId();
        $slider_data = json_decode($this->getCorrects(), true);
        $answer = array();
        if (isset($data['slider_token']) && $data['slider_token']!="") {
            $token = base64_decode($data['slider_token']);
            $correct = 0;
            $offset = $slider_data["offset"];
            $correct_value = $slider_data["correct"];
            if ($correct_value - $offset <= $token && $correct_value + $offset >= $token) {
                $correct = 1;
            }
            $answer = array('answer'=>$token, 'correct'=>$correct);
        }
        $answer = serialize($answer);
        $timer = parent::timer($data);
        if ($timer && $answer) {
            query_insert("INSERT INTO " . DB_PREFIX . "slider_answer ".
                "(base_id, examinee, answer, time_load, time_start, time_end, time_submit) values ".
                "(".$this->getId().", ".$examinee.", '".mysql_real_escape_string($answer)."', ".
                $timer["load"].", ".$timer["start"].", ".$timer["end"].", ".$timer["submit"].
                ") ON DUPLICATE KEY UPDATE answer='".mysql_real_escape_string($answer)."', ".
                "time_load=".$timer["load"].", time_start=".$timer["start"].", time_end=".$timer["end"].", time_submit=".$timer["submit"]);
        }
        return true;
    }
    
    function collect($examinees) {
        $start = "start_time";
        $end = "end_time";
        $submit = "submit_time";
        $answers = array();
        $answers['title'][$start] = _("Start time");
        $answers['title'][$end] = _("End time");
        $answers['title'][$submit] = _("Submit time");
        foreach ($examinees as $examinee) {
            $answer = query_row("SELECT *, a.answer as answer_data FROM " . DB_PREFIX . "slider_task t LEFT JOIN " . DB_PREFIX . "slider_answer a ON t.base_id=a.base_id WHERE t.base_id=".$this->getId()." AND a.examinee=".$examinee);
            if ($answer) { 
                $answers[$examinee][$start] = $answer->time_start;
                $answers[$examinee][$end] = $answer->time_end;
                $answers[$examinee][$submit] = $answer->time_submit;
                $answer_data = unserialize($answer->answer_data);
                $answers['title']["answer"] = _("Answer");
                $answers[$examinee]["answer"] = $answer_data['answer'];
                $answers['title']["correct"] = _("Correct");
                $answers[$examinee]["correct"] = $answer_data['correct'];
            } else {
                $answers[$examinee][$start] = "-";
                $answers[$examinee][$end] = "-";
                $answers[$examinee][$submit] = "-";
                $answers['title']["answer"] = _("Answer");
                $answers[$examinee]["answer"] = "-";
                $answers['title']["correct"] = _("Correct");
                $answers[$examinee]["correct"] = "-";
            }
        }
        $id = "kstask_".$this->getId();
        $title = _("None")." ".$this->getId();
        if ($this->getTitle()) $title = $this->getTitle();
        return array('id'=>$id, 'title'=>$title, 'answers'=>$answers);
    }
    
    function build($data) {
        if (parent::build($data)) {
            $opts = array();
            $cor = array();
            if ((isset($data["max"])) && is_numeric($data["max"])) {
                $opts["max"] = $data["max"];
            }
            if (isset($data["min"]) && is_numeric($data["min"])) {
                $opts["min"] = $data["min"];
            }
            if (isset($data["value"]) && is_numeric($data["value"])) {
                $opts["value"] = $data["value"];
            }
            if (isset($data["values"]) && !empty($data["values"]) && is_array($data["values"]) && count($data["values"]) == 2) {
                $opts["values"] = $data["values"];
            }
            if (isset($data["range"]) && is_numeric($data["range"])) {
                $opts["range"] = $data["range"];
            }
            if (isset($data["offset"]) && is_numeric($data["offset"])) {
                $cor["offset"] = $data["offset"];
            }
            if (isset($data["scale_start"])) {
                $opts["scale_start"] = 1;
            } else {
                $opts["scale_start"] = 0;
            }
            if (isset($data["scale_end"])) {
                $opts["scale_end"] = 1;
            } else {
                $opts["scale_end"] = 0;
            }
            if (isset($data["pips"])) {
                $opts["pips"] = 1;
            } else {
                $opts["pips"] = 0;
            }
            if (isset($data["labels"])) {
                $opts["labels"] = 1;
            } else {
                $opts["labels"] = 0;
            }
            if (isset($data["correct"]) && is_numeric($data["correct"])) {
                $cor["correct"] = $data["correct"];
            }
            if (isset($data["corrects"]) && !empty($data["corrects"]) && is_array($data["corrects"]) && count($data["corrects"]) == 2) {
                $cor["corrects"] = $data["corrects"][0].", ".$data["corrects"][1]."]";
            }
            if (isset($data["orientation"]) && !empty($data["orientation"])) {
                $opts["orientation"] = $data["orientation"];
            }
            if (isset($data["optional_labels"]) && !empty($data["optional_labels"])) {
                //$opts["optional_labels"] = explode(",", $data["optional_labels"]);
                $opts["optional_labels"]  = array_map('trim', explode(',', $data["optional_labels"]));
            }
            $this->setOptions(json_encode($opts));
            $this->setCorrects(json_encode($cor));
            if ($this->getId() > 0) {
                return $this->save();
            } else {
                return $this->create();
            }
        }
      	return false;
    }

    function getOptionsEditable() {
        return json_decode($this->options);
    }
    
    function getOptions() {
        return $this->options;
    }
    
    function setOptions($data) {
        $this->options = $data;
    }

    function getCorrectsEditable() {
        return json_decode($this->corrects);
    }

    function getCorrects() {
        return $this->corrects;
    }

    function setCorrects($data) {
        $this->corrects = $data;
    }
    
    function  buildFromXML($obj, $version=1, $folder=0) {
        parent::buildFromXML($obj, $folder);
        $this->setOptions($obj["options"]);
        return $this->create();
    }
    
    function getObjectsXML() {
        $xml = "<options><![CDATA[".$this->getOptions()."]]></options>\n";
        return $xml;
    }

}
?>