<?php

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 * Description of Survey
 *
 * @author fpvanagthoven
 */
class Survey {

    public $id;
    public $title;
    public $description;
    public $questions;
    public $results;
    
    const DEFAULT_DESCRIPTION = "Write a helpful description for this survey here.";

    public function __construct($id, $title, $description = null) {
        $this->id = $id;
        $this->title = $title;
        $this->description = $description;
        $this->questions = array();

        $this->results = null;
    }

    public function addQuestion($question) {
        array_push($this->questions, $question);
    }

    public function setResults($surveyResults) {
        $this->results = $surveyResults;
    }

    public static function getSurvey($info) {
        $id = $info['surveyID'];
        $title = $info['surveyTitle'];
        $description = $info['surveyDescription'];

        $survey = new Survey($id, $title, $description);

        $numQ = 1; //number questions
        while (isset($info['questionTitle' . $numQ])) {
            $id = $info['questionID' . $numQ];
            $code = $info['questionCode' . $numQ];
            $title = $info['questionTitle' . $numQ];
            $type = $info['questionType' . $numQ];
            $description = $info['questionDescription' . $numQ];

            $question = new Question($id, $code, $title, $type, $description);

            $numA = 1; //number answers
            while (isset($info['q' . $numQ . 'ans' . $numA])) {
                $answer = $info['q' . $numQ . 'ans' . $numA];
                $question->answers[$numA] = $answer;

                $numA++;
            }


            $survey->questions[$numQ] = $question;

            $numQ++;
        }

        return $survey;
    }

    /**
     * TODO: Should return Results-object from reading RDF-database
     * @param type $surveyID 
     */
    public static function getResults($surveyID) {
        
    }

}

?>