TimeKeeper/questionGenerators/science/elements2.php

<?php

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 * Description of elements
 *
 * @author gregory
 */
class elements2 {
   
    private $user;

    /**
     * Setup new numbers engine
     * 
     * @param bool $test Enable debug mode.
     */
    public function __construct($user) {
       
        $this->user = $user;
    }

    public function getElements() {

        $difficulty = $this->difficulty();
        $switchValue = rand(0,(int)$difficulty['percent']/20);
        $question = $this->elementSwitch($switchValue,$difficulty);
        $questionHtml = $this->htmlify($question);
        
        e107::getDb()->insert('tkLastQuestion', ['user'=>$this->user,'LastQuestionHtml'=>base64_encode($questionHtml)]);
        
        e107::getRender()->tablerender('Elements', $questionHtml);






        
        
        
        
        
        
        
        
    }
    
    private function elementSwitch($switchValue,$difficulty) {
        switch ($switchValue) {
            
            case 0:
                return $this->elementValues('symbol',$difficulty);
                break;
            case 1:
                return $this->elementValues('phase',$difficulty);
                break;
            case 2:
                return $this->elementValues('name',$difficulty);
                break;
            case 3:
                return $this->elementValues('number',$difficulty);
                break;
            case 4:
            default:
                return $this->elementValues('atomic_mass',$difficulty);
                break;
        }
    }

    /**
     * Return the difficulty based on previously answered questions.
     *
     * @return int Difficulty as percent.
     */
    private function difficulty() {

        $stats = e107::getDb()->retrieve("SELECT (SUM(correct)/COUNT(correct)*100) as percent,COUNT(correct) as count
            FROM e107.`e107_tkReport` WHERE 
            answereddatestamp >= unix_timestamp((NOW()) - INTERVAL 1 MONTH)
            AND username = '$this->user' AND subject = 'elements';");
        
        if ($stats["count"]==0) {
            return 1;
        } else {
            return $stats;
        }
     
    }
    
    private function elementValues($sign,$difficulty) {
        
        if($difficulty['count']>=300) {
            $incrementalNumber = mt_rand(1, 100 );
        }elseif($difficulty['count']>=200){
            $incrementalNumber = mt_rand(1, 50 );
        }elseif($difficulty['count']>=100){
            $incrementalNumber = mt_rand(1, 20 );
        }else{
            $incrementalNumber = mt_rand(1, 10);
        }

        $elements = json_decode(file_get_contents('resources/periodicTable.json'), true)['elements'];
        
        $selectedElement = rand(0, (int) ($incrementalNumber * 1.18));
        
        $TempQuestion = [];
        
        $TempQuestion['element'] = $elements[$selectedElement];
        $TempQuestion[] = $selectedElement;
        $TempQuestion[] = $sign;
         
        
        return [ 'answer1'=>$TempQuestion['element'][$sign], 'question'=>$TempQuestion, 'type'=>'elements'];
        
    }

    private function htmlify($question) {
        
        $frm = e107::getForm();
        $tp = e107::getParser();
        $sc = e107::getScBatch('timekeeper', TRUE);

        $fString = $frm->open('questionForm', 'post', '', ['autocomplete' => 'off', 'class' => 'formclass']);
        $fString .= $frm->label('<h4>Elements</h4>') . "</br>\n";
        $fString .= $frm->label('Periodic Table of Elements. Fill in the missing information.') . "\n";
        $fString .= '</br>';
        
        $elementData = $question['question']['element'];
        $elementData[$question['question'][1]] = '???';
        $sc->setVars($elementData);
        $fString .= $tp->parseTemplate(file_get_contents('templates/elementTable.html'), true, $sc);
        
        $fString .= '</br></br>';
        $fString .= $frm->text('a1', '', 80, ['placeholder' => 'Write answer here!', 'autocomplete' => "off", 'spellcheck' => "false"]) . "\n";
        $fString .= $frm->hidden('checkerData', TkAnswerStore::issue($this->user, $question), ['id' => 'checkerData']);
        $fString .= $frm->hidden('subject', 'elements', ['id' => 'elements']);
        $fString .= '</br>' . "\n";
        $fString .= e107::getForm()->button('Answer', 'Check answer') . "\n";
        $fString .= e107::getForm()->close();
        $fString .= '</br></br>';
        
        return $fString;
        
    }

}