itflow/guest_pay_invoice_stripe.php

313 lines
15 KiB
PHP

<?php
require_once('guest_header.php');
// Define wording
DEFINE("WORDING_PAYMENT_FAILED", "<br><h2>There was an error verifying your payment. Please contact us for more information.</h2>");
// Setup Stripe
$stripe_vars = mysqli_fetch_array(mysqli_query($mysqli, "SELECT config_stripe_enable, config_stripe_publishable, config_stripe_secret, config_stripe_account FROM settings WHERE company_id = 1"));
$config_stripe_enable = intval($stripe_vars['config_stripe_enable']);
$config_stripe_publishable = nullable_htmlentities($stripe_vars['config_stripe_publishable']);
$config_stripe_secret = nullable_htmlentities($stripe_vars['config_stripe_secret']);
$config_stripe_account = intval($stripe_vars['config_stripe_account']);
// Check Stripe is configured
if ($config_stripe_enable == 0 || $config_stripe_account == 0 || empty($config_stripe_publishable) || empty($config_stripe_secret)) {
echo "<br><h2>Stripe payments not enabled/configured</h2>";
require_once('guest_footer.php');
exit();
}
// Show payment form
// Users are directed to this page with the invoice_id and url_key params to make a payment
if (isset($_GET['invoice_id'], $_GET['url_key']) && !isset($_GET['payment_intent'])) {
$invoice_url_key = sanitizeInput($_GET['url_key']);
$invoice_id = intval($_GET['invoice_id']);
// Query invoice details
$sql = mysqli_query(
$mysqli,
"SELECT * FROM invoices
LEFT JOIN clients ON invoice_client_id = client_id
WHERE invoice_id = $invoice_id
AND invoice_url_key = '$invoice_url_key'
AND invoice_status != 'Draft'
AND invoice_status != 'Paid'
AND invoice_status != 'Cancelled'
LIMIT 1"
);
// Ensure we have a valid invoice
if (!$sql || mysqli_num_rows($sql) !== 1) {
echo "<br><h2>Oops, something went wrong! Please ensure you have the correct URL and have not already paid this invoice.</h2>";
require_once('guest_footer.php');
exit();
}
// Process invoice, client and company details/settings
$row = mysqli_fetch_array($sql);
$invoice_id = intval($row['invoice_id']);
$invoice_prefix = nullable_htmlentities($row['invoice_prefix']);
$invoice_number = intval($row['invoice_number']);
$invoice_status = nullable_htmlentities($row['invoice_status']);
$invoice_date = nullable_htmlentities($row['invoice_date']);
$invoice_due = nullable_htmlentities($row['invoice_due']);
$invoice_amount = floatval($row['invoice_amount']);
$invoice_currency_code = nullable_htmlentities($row['invoice_currency_code']);
$client_id = intval($row['client_id']);
$client_name = nullable_htmlentities($row['client_name']);
$sql = mysqli_query($mysqli, "SELECT * FROM companies, settings WHERE companies.company_id = settings.company_id AND companies.company_id = 1");
$row = mysqli_fetch_array($sql);
$company_locale = nullable_htmlentities($row['company_locale']);
// Add up all the payments for the invoice and get the total amount paid to the invoice
$sql_amount_paid = mysqli_query($mysqli, "SELECT SUM(payment_amount) AS amount_paid FROM payments WHERE payment_invoice_id = $invoice_id");
$row = mysqli_fetch_array($sql_amount_paid);
$amount_paid = floatval($row['amount_paid']);
$balance_to_pay = $invoice_amount - $amount_paid;
// Get invoice items
$sql_invoice_items = mysqli_query($mysqli, "SELECT * FROM invoice_items WHERE item_invoice_id = $invoice_id ORDER BY item_id ASC");
// Set Currency Formatting
$currency_format = numfmt_create($company_locale, NumberFormatter::CURRENCY);
?>
<!-- Include Stripe JS (must be Stripe-hosted, not local) -->
<script src="https://js.stripe.com/v3/"></script>
<!-- jQuery -->
<script src="plugins/jquery/jquery.min.js"></script>
<div class="row pt-5">
<!-- Show invoice details -->
<div class="col-sm">
<h3>Payment for Invoice: <?php echo $invoice_prefix . $invoice_number ?></h3>
<br>
<div class="table-responsive">
<table class="table">
<thead>
<tr>
<th>Product</th>
<th class="text-center">Qty</th>
<th class="text-right">Total</th>
</tr>
</thead>
<tbody>
<?php
$item_total = 0;
while ($row = mysqli_fetch_array($sql_invoice_items)) {
$item_name = nullable_htmlentities($row['item_name']);
$item_quantity = floatval($row['item_quantity']);
$item_total = floatval($row['item_total']);
?>
<tr>
<td><?php echo $item_name; ?></td>
<td class="text-center"><?php echo $item_quantity; ?></td>
<td class="text-right"><?php echo numfmt_format_currency($currency_format, $item_total, $invoice_currency_code); ?></td>
</tr>
<?php } ?>
</tbody>
</table>
</div>
<i><?php if (intval($amount_paid) > 0) { ?> Already paid: <?php echo numfmt_format_currency($currency_format, $amount_paid, $invoice_currency_code); } ?></i>
</div>
<!-- End invoice details-->
<!-- Show Stripe payment form -->
<div class="col-sm offset-sm-1">
<form id="payment-form">
<h1><?php echo numfmt_format_currency($currency_format, $balance_to_pay, $invoice_currency_code); ?></h1>
<input type="hidden" id="stripe_publishable_key" value="<?php echo $config_stripe_publishable ?>">
<input type="hidden" id="invoice_id" value="<?php echo $invoice_id ?>">
<input type="hidden" id="url_key" value="<?php echo $invoice_url_key ?>">
<br>
<div id="link-authentication-element">
<!--Stripe.js injects the Link Authentication Element-->
</div>
<div id="payment-element">
<!--Stripe.js injects the Payment Element-->
</div>
<br>
<button type="submit" id="submit" class="btn btn-primary btn-lg btn-block text-bold" hidden="hidden">
<div class="spinner hidden" id="spinner"></div>
<span id="button-text"><i class="fas fa-check mr-2"></i>Pay Invoice</span>
</button>
<div id="payment-message" class="hidden"></div>
</form>
</div>
<!-- End Stripe payment form -->
</div>
<!-- Include local JS that powers stripe -->
<script src="js/guest_pay_invoice_stripe.js"></script>
<?php
// Process payment & redirect user back to invoice
// (Stripe will redirect back to this page upon payment success with the payment_intent and payment_intent_client_secret params set
} elseif (isset($_GET['payment_intent'], $_GET['payment_intent_client_secret'])) {
// Params from GET
$pi_id = sanitizeInput($_GET['payment_intent']);
$pi_cs = $_GET['payment_intent_client_secret'];
// Initialize stripe
require_once('vendor/stripe-php-10.5.0/init.php');
\Stripe\Stripe::setApiKey($config_stripe_secret);
// Check details of the PI
$pi_obj = \Stripe\PaymentIntent::retrieve($pi_id);
if ($pi_obj->client_secret !== $pi_cs) {
exit(WORDING_PAYMENT_FAILED);
} elseif ($pi_obj->status !== "succeeded") {
exit(WORDING_PAYMENT_FAILED);
} elseif ($pi_obj->amount !== $pi_obj->amount_received) {
// The invoice wasn't paid in full
// this should be flagged for manual review as would indicate something weird happening
exit(WORDING_PAYMENT_FAILED);
}
// Get details from PI
$pi_date = date('Y-m-d', $pi_obj->created);
$pi_invoice_id = intval($pi_obj->metadata->itflow_invoice_id);
$pi_client_id = intval($pi_obj->metadata->itflow_client_id);
$pi_amount_paid = floatval(($pi_obj->amount_received / 100));
$pi_currency = strtoupper(sanitizeInput($pi_obj->currency));
$pi_livemode = $pi_obj->livemode;
// Get/Check invoice (& client/primary contact)
$invoice_sql = mysqli_query(
$mysqli,
"SELECT * FROM invoices
LEFT JOIN clients ON invoice_client_id = client_id
LEFT JOIN contacts ON clients.client_id = contacts.contact_client_id AND contact_primary = 1
WHERE invoice_id = $pi_invoice_id
AND invoice_status != 'Draft'
AND invoice_status != 'Paid'
AND invoice_status != 'Cancelled'
LIMIT 1"
);
if (!$invoice_sql || mysqli_num_rows($invoice_sql) !== 1) {
exit(WORDING_PAYMENT_FAILED);
}
// Invoice exists - get details
$row = mysqli_fetch_array($invoice_sql);
$invoice_id = intval($row['invoice_id']);
$invoice_prefix = nullable_htmlentities($row['invoice_prefix']);
$invoice_number = intval($row['invoice_number']);
$invoice_amount = floatval($row['invoice_amount']);
$invoice_currency_code = nullable_htmlentities($row['invoice_currency_code']);
$invoice_url_key = nullable_htmlentities($row['invoice_url_key']);
$client_id = intval($row['client_id']);
$client_name = nullable_htmlentities($row['client_name']);
$contact_name = $row['contact_name'];
$contact_email = $row['contact_email'];
$sql_company = mysqli_query($mysqli, "SELECT * FROM companies WHERE company_id = 1");
$row = mysqli_fetch_array($sql_company);
$company_name = mysqli_real_escape_string($mysqli, nullable_htmlentities($row['company_name']));
$company_phone = nullable_htmlentities($row['company_phone']);
$company_locale = nullable_htmlentities($row['company_locale']);
// Set Currency Formatting
$currency_format = numfmt_create($company_locale, NumberFormatter::CURRENCY);
// Add up all the payments for the invoice and get the total amount paid to the invoice already (if any)
$sql_amount_paid_previously = mysqli_query($mysqli, "SELECT SUM(payment_amount) AS amount_paid FROM payments WHERE payment_invoice_id = $invoice_id");
$row = mysqli_fetch_array($sql_amount_paid_previously);
$amount_paid_previously = $row['amount_paid'];
$balance_to_pay = $invoice_amount - $amount_paid_previously;
// Sanity check that the amount paid is exactly the invoice outstanding balance
if (intval($balance_to_pay) !== intval($pi_amount_paid)) {
exit("Something went wrong confirming this payment. Please get in touch.");
}
// Apply payment
// Update Invoice Status
mysqli_query($mysqli, "UPDATE invoices SET invoice_status = 'Paid' WHERE invoice_id = $invoice_id");
// Add Payment to History
mysqli_query($mysqli, "INSERT INTO payments SET payment_date = '$pi_date', payment_amount = $pi_amount_paid, payment_currency_code = '$pi_currency', payment_account_id = $config_stripe_account, payment_method = 'Stripe', payment_reference = 'Stripe - $pi_id', payment_invoice_id = $invoice_id");
mysqli_query($mysqli, "INSERT INTO history SET history_status = 'Paid', history_description = 'Payment added - $ip - $os - $browser', history_invoice_id = $invoice_id");
// Notify
mysqli_query($mysqli, "INSERT INTO notifications SET notification_type = 'Invoice Paid', notification = 'Invoice $invoice_prefix$invoice_number has been paid - $ip - $os - $browser', notification_action = 'invoice.php?invoice_id=$invoice_id', notification_client_id = $pi_client_id");
// Logging
$extended_log_desc = '';
if (!$pi_livemode) {
$extended_log_desc = '(DEV MODE)';
}
mysqli_query($mysqli, "INSERT INTO logs SET log_type = 'Payment', log_action = 'Create', log_description = 'Stripe payment of $pi_currency $pi_amount_paid against invoice $invoice_prefix$invoice_number - $pi_id $extended_log_desc', log_ip = '$ip', log_user_agent = '$user_agent', log_client_id = $pi_client_id");
// Send email receipt
$sql_settings = mysqli_query($mysqli, "SELECT * FROM settings WHERE company_id = 1");
$row = mysqli_fetch_array($sql_settings);
$config_smtp_host = $row['config_smtp_host'];
$config_smtp_port = intval($row['config_smtp_port']);
$config_smtp_encryption = $row['config_smtp_encryption'];
$config_smtp_username = $row['config_smtp_username'];
$config_smtp_password = $row['config_smtp_password'];
$config_mail_from_email = $row['config_mail_from_email'];
$config_mail_from_name = $row['config_mail_from_name'];
$config_invoice_from_name = $row['config_invoice_from_name'];
$config_invoice_from_email = $row['config_invoice_from_email'];
if (!empty($config_smtp_host)) {
$subject = "Payment Received - Invoice $invoice_prefix$invoice_number";
$body = "Hello $contact_name,<br><br>We have received your payment in the amount of " . $pi_currency . $pi_amount_paid . " for invoice <a href='https://$config_base_url/guest_view_invoice.php?invoice_id=$invoice_id&url_key=$invoice_url_key'>$invoice_prefix$invoice_number</a>. Please keep this email as a receipt for your records.<br><br>Amount: " . numfmt_format_currency($currency_format, $pi_amount_paid, $invoice_currency_code) . "<br>Balance: " . numfmt_format_currency($currency_format, '0', $invoice_currency_code) . "<br><br>Thank you for your business!<br><br><br>~<br>$company_name<br>Billing Department<br>$config_invoice_from_email<br>$company_phone";
$mail = sendSingleEmail(
$config_smtp_host,
$config_smtp_username,
$config_smtp_password,
$config_smtp_encryption,
$config_smtp_port,
$config_invoice_from_email,
$config_invoice_from_name,
$contact_email,
$contact_name,
$subject,
$body
);
// Email Logging
if ($mail === true) {
mysqli_query($mysqli, "INSERT INTO history SET history_status = 'Sent', history_description = 'Emailed Receipt!', history_invoice_id = $invoice_id");
} else {
mysqli_query($mysqli, "INSERT INTO history SET history_status = 'Sent', history_description = 'Email Receipt Failed!', history_invoice_id = $invoice_id");
mysqli_query($mysqli, "INSERT INTO notifications SET notification_type = 'Mail', notification = 'Failed to send email to $contact_email'");
mysqli_query($mysqli, "INSERT INTO logs SET log_type = 'Mail', log_action = 'Error', log_description = 'Failed to send email to $contact_email regarding $subject. $mail'");
}
}
// Redirect user to invoice
header('Location: //' . $config_base_url . '/guest_view_invoice.php?invoice_id=' . $pi_invoice_id . '&url_key=' . $invoice_url_key);
} else {
echo "<br><h2>Oops, something went wrong! Please raise a ticket if you believe this is an error.</h2>";
}
require_once('guest_footer.php');