<?php
session_start();
if (!isset($_SESSION['email']) && !isset($_SESSION['pass'])) {
  echo "<script> location.href='login.php'; </script>";
  exit;
}
require_once 'vendor/autoload.php';
require 'PHPMailer/PHPMailerAutoload.php';
require 'PHPMailer/class.phpmailer.php';
require 'elgamal.php';
require 'DocxConversion.php';


function send_email($msg, $sendto){

    $mail = new PHPMailer();

    // set mailer to use SMTP
    $mail->IsSMTP();

    $mail->Host = 'smtp.gmail.com';  // specify main and backup server

    $mail->SMTPAuth = true;     // turn on SMTP authentication

    $mail->SMTPSecure = 'ssl';                         // Enable TLS encryption, `ssl` also accepted
    $mail->Port = 465;

    $mail->Username = 'kurniawanekosaputro6@gmail.com';  // SMTP username
    $mail->Password = 'kurniaone'; // SMTP password

    $mail->setFrom('kurniawanekosaputro6@gmail.com', 'kurniawan eko saputro');
    $mail->addReplyTo('kurniawanekosaputro6@gmail.com', 'kurniawan eko saputro');
    // below we want to set the email address we will be sending our email to.
    $mail->AddAddress($sendto);

    if(isset($msg['attachment']))
        $mail->AddAttachment($msg['attachment']);

    $mail->IsHTML(true);

    $mail->Subject = $msg['subject'];

    $mail->Body    = $msg['body'];
    $mail->AltBody = 'undefined';

    if(!$mail->Send())
    {
       echo "Message could not be sent.

    ";
       echo "Mailer Error: " . $mail->ErrorInfo;
       exit;
    }

}

$username = $_SESSION['email'];
$password = $_SESSION['pass'];

// $email and $message are the data that is being
// posted to this page from our html contact form
$email = $_REQUEST['email'] ;
$subject = $_REQUEST['subject'] ;
$message = $_REQUEST['message'] ;

$file_name = $_FILES ['file-upload']['name'];
$file_tmp =$_FILES['file-upload']['tmp_name'];


if ( 0 < $_FILES['file-upload']['error'] ) {
        echo 'Error: ' . $_FILES['file-upload']['error'] . '<br>';
    }
else {
    $path = 'uploaded_file/' . $file_name;
    move_uploaded_file($file_tmp, $path);
}


$key = new elgamal(0,0,0,0,0);
$key->_key(10000);
$p = $key->p;
$g = $key->g;
$x = $key->x;
$y = $key->y;


$ext = explode('.', $file_name);
$ext = array_slice($ext, -1)[0];



switch ($ext) {
    case 'txt':
    //mengambil data dari txt
        $myText = file_get_contents($path);

    //enkripsi
        $myText = $key->_enkripsi($myText);
        $message = $key->_enkripsi($message);

    //simpan ke txt
        $fp=fopen($path,"w+");
        fwrite($fp, $myText);
        fclose($fp);
        break;

  case 'xlsx':
    $reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader("Xlsx");
    $spreadsheet = $reader->load($path);
    $writer = new \PhpOffice\PhpSpreadsheet\Writer\Html($spreadsheet);
    $writer->save("temp.html");

    $myText = file_get_contents('temp.html');
        unlink('temp.html');

        $myText = $key->_enkripsi($myText);
    print_r($myText);
        // $message = $key->_enkripsi($message);

    // $fp=fopen('temp.html',"w+");
    // fwrite($fp, $myText);
    // fclose($fp);
    //
    // $reader = new \PhpOffice\PhpSpreadsheet\Reader\Html();
    // $spreadsheet = $reader->load("temp.html");
    // $writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, "Xlsx");
    // $writer->save($path);
    // unlink($path);
    break;

    default:
    //mengambil data dari word
        $reader = \PhpOffice\PhpWord\IOFactory::createReader('Word2007');
        $phpWord = $reader->load($path);
        // Saving the document as HTML file...
        $objWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord, 'HTML');
        $objWriter->save('temp.html');
        $myText = file_get_contents('temp.html');

        unlink('temp.html');

    //enkripsi
        $myText = $key->_enkripsi($myText);
        $message = $key->_enkripsi($message);

    //menyimpan ke word
        $phpWord = new \PhpOffice\PhpWord\PhpWord();
        $section = $phpWord->createSection();
        $section->addText($myText);
        $objWriter = \PhpOffice\PhpWord\IOFactory::createWriter($phpWord, 'Word2007');
        $objWriter->save($path);

        break;
}


$mailSubject = '[CHIPHER] '.$subject;
send_email(array('subject' => $mailSubject, 'body' => $message, 'attachment' => $path), $email);

$mailSubject = '[KEY] '.$subject;
$message = 'P:'.$key->p.' K:'.$key->x;
send_email(array('subject' => $mailSubject, 'body' => $message), $email);

unlink($path);

echo "<script> location.href='createmsg.php'; </script>";
exit;

?>