<?php

/**
 * e107 website system
 *
 * Copyright (C) 2008-2016 e107 Inc (e107.org)
 * Released under the terms and conditions of the
 * GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
 *
 */
class timekeeper_cron {

    function config() { // Setup
        $cron = array();

        $cron[] = array(
            'name' => "Send Reports", // Displayed in admin area. .
            'function' => "sendReportsEmail", // Name of the function which is defined below.
            'category' => 'mail', // Choose between: mail, user, content, notify, or backup
            'description' => "Send Timekeeper reports out to receivers."  // Displayed in admin area.
        );

        return $cron;
    }

    function sendReportsEmail() {

        //$adminEmail = e107::getPref('siteadminemail');
        //$adminName = e107::getPref('siteadmin');

        require_once(e_HANDLER . "mail.php");
        
        $mailContent = $this->generateEmail('elliot');
        
        $eml = array(
            'subject' => $mailContent['subject'],
            'body' => $mailContent['message'],
                'sender_email'=>'service@pfip.au'
            );
        
        
        foreach([$mailContent['recipients'],'elliot@pfip.au'] as $recipient)
        {
            e107::getEmail()->sendEmail($recipient, 'Gregory', $eml);
        }
        
        //sendemail($mailContent['recipients'], $mailContent['subject'], $mailContent['message']);
        
        $mailContent = $this->generateEmail('silas');
        
        $eml = array(
            'subject' => $mailContent['subject'],
            'body' => $mailContent['message'],
                'sender_email'=>'service@pfip.au'
            );
        foreach([$mailContent['recipients'],'silas@pfip.au'] as $recipient)
        {
            e107::getEmail()->sendEmail($recipient, 'Gregory', $eml);
        }
        //sendemail($mailContent['recipients'], $mailContent['subject'], $mailContent['message']);
      
    }

    public function generateEmail($user) {

        //
        //Get recipients and users here
        //

        $returnArray['subject'] = 'TimeKeeper Report for '.$user;
        //$returnArray['recipients'] = 'pigs.fly.in.packs@gmail.com';
        $returnArray['recipients'] = 'gregory@pfip.au';

        $sql = e107::getDb();

        $coverPageData = $this->coverPage($sql, $user);

        $questionsPageData = $this->questionsTable($sql, $user);
        
        $returnArray['message'] = $this->template($coverPageData,$questionsPageData);

        $sql->close();
        
        return $returnArray;
    }

    private function coverPage($sql, $user) {
        
            $sql->gen("SELECT `subject`, COUNT(`correct`) as total, CAST((SUM(correct)/COUNT(id)*100) as DECIMAL(5,2)) as percent
            FROM e107.`e107_tkReport` WHERE FROM_UNIXTIME(`answereddatestamp`)>=DATE_ADD(CURDATE(), INTERVAL -1 DAY) AND `username` = '".$user."' GROUP BY (`subject`);");
            
            $Scores = [];
            $cntr = 0;
            $percentTotal = 0;
            
            while ($row = $sql->fetch()) {
                
                $Scores[] = ['subject'=>$row['subject'],'total'=>$row['total'],'percent'=>$row['percent']];
                $percentTotal = $percentTotal + $row['percent'];
                $cntr++;
            }
            
            if(is_numeric($percentTotal) && is_numeric($cntr) && $percentTotal != 0 && $cntr != 0)
            {
                $returnPercentTotal = $percentTotal/$cntr;
            }else{
                $returnPercentTotal = 0;
            }
        
        return ['user'=>$user,'TotalPercent'=>$returnPercentTotal,'Scores'=>$Scores];
    }

    private function questionsTable($sql, $user) {

        $sql->gen("SELECT `question`,`answereddatestamp`,`userAnswer`,`correct`,`subject` FROM e107.e107_tkReport WHERE username='$user' 
                AND FROM_UNIXTIME(`answereddatestamp`)>=DATE_ADD(CURDATE(), INTERVAL -1 DAY) ORDER BY subject;");

        $questionsData['questions'] = [];
        $startTime = 9999999999;
        $endTime = 0;
        
        while ($row = $sql->fetch()) {
            if(!isset($questionsData['questions'][$row["subject"]])) {
                $questionsData['questions'][$row["subject"]] = [];
            }
            
            $questionsData['questions'][$row["subject"]][] = ['question'=>$row["question"],'userAnswer'=>$row["userAnswer"],'correct'=>$row["correct"]];
            
            if($row["answereddatestamp"]<=$startTime) {
                $startTime = $row["answereddatestamp"];
            }
            
            if($row["answereddatestamp"]>=$endTime) {
                $endTime = $row["answereddatestamp"];
            }
        }
        
        $questionsData['startTime'] = $startTime;
        $questionsData['endTime'] = $endTime;
        
        return $questionsData;
    }

    private function correctOrNot($state) {
        if ($state) {
            return '<img alt="Correct" src="' . e_IMAGE . 'admin_images/true_16.png"/>';
        } else {
            return '<img alt="Incorrect" src="' . e_IMAGE . 'admin_images/false_16.png"/>';
        }
    }

private function template($coverPageData,$questionsPageData) {
    $emailTemplate = '<!DOCTYPE html>
<html>
<head>
<style>
body {
  background-color: #1a1a1a;
  color: #ffffff;
  font-family: Arial, sans-serif;
}

#sum {
  font-size: 32px;
  text-align: center;
  color: #ff9900;
}

#styTi {
  font-size: 14px;
  text-align: center;
  color: #cccccc;
}

#coverP, #questions {
  font-family: Arial, sans-serif;
  border-collapse: collapse;
  width: 100%;
  margin-top: 20px;
}

#coverP td, #coverP th, #questions td, #questions th {
  border: 1px solid #444;
  padding: 12px;
  text-align: left;
}

#coverP tr:nth-child(even), #questions tr:nth-child(even) {
  background-color: #2a2a2a;
}

#coverP tr:hover, #questions tr:hover {
  background-color: #333;
}

#coverP th, #questions th {
  padding-top: 12px;
  padding-bottom: 12px;
  text-align: left;
  background-color: #ff9900;
  color: #1a1a1a;
  font-weight: bold;
}

#coverP td, #questions td {
  color: #ffffff;
}
</style>
</head>
<body>
<div id="sum">'.ucfirst($coverPageData["user"]).'\'s overall score for yesterday is '.$coverPageData["TotalPercent"].'%.</div>
<div id="styTi">'.round(abs($questionsPageData["endTime"] - $questionsPageData["startTime"]) / 60, 2)." minutes were spent studying today.".'</div>
<br/>
<table id="coverP">
  <tr>
    <th>Subject</th>
    <th>Count</th>
    <th>Percentage</th>
  </tr>';
  
  foreach ($coverPageData["Scores"] as $Score) {
    $emailTemplate .= '
    <tr>
      <td>'.ucfirst($Score["subject"]).'</td>
      <td>'.$Score["total"].'</td>
      <td>'.$Score["percent"].'%</td>
    </tr>';
  }
  
  $emailTemplate .= '
</table>
<br/>
<table id="questions">
  <tr>
    <th>Question</th>
    <th>Answered</th>
    <th>Correct?</th>
  </tr>';
  
  $subjectNow = '';
  foreach ($questionsPageData["questions"] as $key => $questionSub) {
    foreach ($questionSub as $question) {
      if($subjectNow == '' || $subjectNow != $key) {
        $subjectNow = $key;
        $emailTemplate .= '
        <tr>
          <td colspan="3" style="text-align: center; font-size: 16px; background-color: #333; color: #ff9900;">'.ucfirst($subjectNow).'</td>
        </tr>';
      }
      
      $emailTemplate .= '
      <tr>
        <td>'.$question["question"].'</td>
        <td>'.$question["userAnswer"].'</td>
        <td>'.$this->correctOrNot($question["correct"]).'</td>
      </tr>';
    }
  }
  
  $emailTemplate .= '
</table>
</body>
</html>';
  
  return $emailTemplate;
}

    
}