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<?php
//Define name spaces
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;
//Include required phpMailer files
require './PHPMailer/PHPMailer.php';
require './PHPMailer/SMTP.php';
require './PHPMailer/Exception.php';
include './head.php';
include './header.php';
include './navbar.php';
if (isset($_POST['submit'])) {
$token = $_POST['token'];
$kwh = $_POST['kwh'];
$price = $_POST['price'];
$meterNumber = $_POST['meterNumber'];
$query = "SELECT * FROM `customers` WHERE `meter_number`='$meterNumber'";
if ($query_run = mysqli_query($conn, $query)) {
$row = mysqli_fetch_array($query_run);
$email = $row['email'];
$subject = "Your Receipt for Recent Purchase";
$firstname = $row['firstname'];
$surname = $row['surname'];
$pm = "
<!DOCTYPE html>
<html lang=\"en\">
<head>
<meta charset=\"UTF-8\">
<meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">
<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">
</head>
<body>
<div style=\"background-color:rgba(0,255,0,0.1);padding:1rem;\">
<div style=\"background-color:#fff;border-radius:10px;padding:10px;\">
<div style=\"background-color:#009900;color:#fff;border-radius:15px 15px 0 0;text-align:center;font-size:18px;padding:40px 10px ;font-weight:bold;font-family:arial;\">
<div class=\"text-center bg-dark text-white\">VOLTIFY</div>
</div>
<h2>Dear $firstname $surname,</h2>
<p>Here are the particulars of the token you have acquired.</p>
<b>Meter Number</b>: $meterNumber <br><br>
<b>Price</b>: K$price <br><br>
<b>Amount</b>: $kwh kWh<br><br>
<b>Token</b>: $token <br><br>
<center>
<div class=\"padding:5px;text-align:center;background-color:#c9c8c8;\">
Voltify © " . date('Y') . "
</div>
</center>
</div>
</div>
</body>
</html>
";
//Create instance of phpMailer
$mail = new PHPMailer();
//Enable verbose debug output
// $mail->SMTPDebug = SMTP::DEBUG_SERVER;
//set mailer to use smtp
$mail->isSMTP();
//define smtp host
$mail->Host = "smtp.gmail.com";
//enable smtp authentification
$mail->SMTPAuth = "true";
//set type of encryption (ssl/tls)
//TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above
$mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
//set port to connect smtp
$mail->Port = "587"; //465 for ssl
//set gmail username
$mail->Username = "beatonndaba@gmail.com";
//set gmail password
$mail->Password = "tsxngatucbssjwbm";
//Set email format to HTML
$mail->isHTML(true);
//set email subject
$mail->Subject = $subject;
//set sender email
$mail->setFrom($email, "VOLTIFY");
//Email body
$mail->Body = $pm;
//Add recipient
$mail->addAddress($email);
//Finally send email
if ($mail->Send()) {
?>
<script type="text/javascript">
document.addEventListener("DOMContentLoaded", function(event) {
swal("SUCCESS", "Invoice email was sent successfully", "success");
})
</script>
<?php
} else {
?>
<script type="text/javascript">
document.addEventListener("DOMContentLoaded", function(event) {
swal("ERROR", "<?php echo 'Message could not be sent. Mailer Error: {' . $mail->ErrorInfo . '}'; ?>", "error");
})
</script>
<?php
}
//Closing smtp connection
$mail->smtpClose();
} else {
die(mysqli_error($conn));
}
}
function generateToken($amountOfEnergy, $meterNumber)
{
$tokenLength = 20;
$shift = 3; // Number of positions to shift each digit
$delimiter = '|'; // Delimiter character to separate meter number and token amount
$token = '';
// Convert the amount of energy and meter number to strings
$energyString = strval($amountOfEnergy);
$meterNumberString = strval($meterNumber);
// Calculate the remaining length for random digits
$remainingLength = $tokenLength - strlen($energyString) - strlen($meterNumberString);
// Generate random digits for the remaining length
for ($i = 0; $i < $remainingLength; $i++) {
$token .= strval(random_int(0, 9));
}
// Concatenate the strings to form the token
$token = $energyString . $delimiter . $meterNumberString . $token;
// Encrypt the token using a Caesar cipher
$encryptedToken = encryptToken($token, $shift);
return $encryptedToken;
// return $token;
}
// Encrypt the token using a simple Caesar cipher
function encryptToken($token, $shift)
{
$encryptedToken = '';
for ($i = 0; $i < strlen($token); $i++) {
$c = $token[$i];
if (ctype_digit($c)) {
// Shift the digit value by the specified number of positions
$shiftedDigit = ($c + $shift) % 10;
$encryptedToken .= strval($shiftedDigit);
}
}
return $encryptedToken;
}
if (isset($_POST['meterNumber'], $_POST['kwh'])) {
$meterNumber = $_POST['meterNumber'];
$kwh = $_POST['kwh'];
$price = $_POST['price'];
$run = mysqli_query($conn, "SELECT * FROM `customers` WHERE `meter_number`='$meterNumber' ") or die(mysqli_error($conn));
$row = mysqli_fetch_array($run);
}
$token = generateToken($kwh, $meterNumber);
?>
<!-- Breadcomb area End-->
<!-- Invoice area Start-->
<div class="invoice-area">
<div class="container-fluid">
<div class="row">
<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
<div class="invoice-wrap">
<div class="invoice-img">
<img src="img/logo/logo.png" alt="" />
</div>
<div class="invoice-hds-pro">
<div class="row">
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
<div class="invoice-cmp-ds ivc-frm">
<div class="invoice-frm">
<span>Invoice from</span>
</div>
<div class="comp-tl">
<h2>Voltify</h2>
</div>
<div class="cmp-ph-em">
<span>0998412421</span>
<span>info@voltify.com</span>
</div>
</div>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-12">
<div class="invoice-cmp-ds ivc-to">
<div class="invoice-frm">
<span>Invoice to</span>
</div>
<div class="comp-tl">
<h2><?php echo $row['firstname'] . ' ' . $row['surname']; ?></h2>
</div>
<div class="cmp-ph-em">
<span><?php echo $row['mobile']; ?></span>
<span><?php echo $row['email']; ?></span>
</div>
</div>
</div>
</div>
<div class="row">
<center>
<div class="col-sm-12 col-xs-12">
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
<input type="hidden" name="token" value="<?php echo $token; ?>">
<input type="hidden" name="price" value="<?php echo $price; ?>">
<input type="hidden" name="kwh" value="<?php echo $kwh; ?>">
<input type="hidden" name="meterNumber" value="<?php echo $meterNumber; ?>">
<button class="btn btn-primary" style="border-radius:20px;margin-top:8px" type="submit" name="submit"><i class="fa fa-envelope"></i> Email</button>
</form>
</div>
</center>
</div>
</div>
<div class="row">
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12">
<div class="invoice-hs">
<span>Date</span>
<h2><?php echo date('d/m/Y'); ?></h2>
</div>
</div>
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12">
<div class="invoice-hs date-inv sm-res-mg-t-30 tb-res-mg-t-30 tb-res-mg-t-0">
<span>Token</span>
<h2><?php echo $token; ?></h2>
</div>
</div>
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12">
<div class="invoice-hs wt-inv sm-res-mg-t-30 tb-res-mg-t-30 tb-res-mg-t-0">
<span>Units</span>
<h2><?php echo $kwh; ?>kWh</h2>
</div>
</div>
<div class="col-lg-3 col-md-3 col-sm-3 col-xs-12">
<div class="invoice-hs gdt-inv sm-res-mg-t-30 tb-res-mg-t-30 tb-res-mg-t-0">
<span>Total Price</span>
<h2>K<?php echo $price; ?></h2>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- Invoice area End-->
<?php
include './footer.php';
include './scripts.php';
?>
<script>
document.querySelectorAll(".main-menu-area .nav li")[0].classList.add('active')
document.querySelector(".main-menu-area .tab-content #Home").classList.add('in')
document.querySelector(".main-menu-area .tab-content #Home").classList.add('active')
document.querySelector("title").innerHTML = "Voltify ~ Invoice";
</script>