122 lines
4.8 KiB
PHP
122 lines
4.8 KiB
PHP
<?php
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/**
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* PayPal Button Include (themed to match the site's own button style,
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* e.g. "Print Remittance Form" — a plain btn--primary, not PayPal's own
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* SDK-rendered widget, which can't be restyled).
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*
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* Include this file wherever you want to show the PayPal Checkout button.
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*
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* REQUIRED VARIABLES (must be set before including this file):
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* - $owing: The amount to charge (float)
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* - $trxnum: Your internal transaction/reference number (int)
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*
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* OPTIONAL VARIABLES:
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* - $paypal_currency: Currency code (default: from config)
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* - $paypal_description: Order description
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* - $paypal_button_text: Button label (default: 'PayPal/Credit Card')
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*
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* USAGE:
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* $owing = 25.00;
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* $trxnum = 12345;
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* include 'button_file.php';
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*
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* FLOW: click -> create order -> redirect to PayPal's approve page ->
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* PayPal redirects back here with ?paypal=success&token=<orderId> ->
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* this file captures the order server-side and shows the result.
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* (Redirect-based, not the JS SDK popup/iframe button, so it can be
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* styled as a plain themed link instead of PayPal's own widget.)
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*/
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require_once __DIR__ . '/paypal_checkout_config.php';
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if (session_status() === PHP_SESSION_NONE) {
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session_start();
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}
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$paypal_currency = $paypal_currency ?? PAYPAL_CURRENCY;
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$paypal_description = $paypal_description ?? 'Order Payment';
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$paypal_button_text = $paypal_button_text ?? 'PayPal / Credit Card';
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$_SESSION['paypal_checkout_amount'] = $owing;
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$_SESSION['paypal_checkout_trxnum'] = $trxnum;
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$_SESSION['paypal_checkout_currency'] = $paypal_currency;
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$_SESSION['paypal_checkout_description'] = $paypal_description;
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$containerId = 'pp-btn-' . uniqid();
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// -- Handle the return trip from PayPal (redirect-based approval) ----------
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$pppCaptureResult = null;
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if (isset($_GET['paypal']) && $_GET['paypal'] === 'success' && isset($_GET['token'])) {
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$orderId = $_GET['token'];
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if (isset($_SESSION['paypal_order_id']) && $_SESSION['paypal_order_id'] === $orderId) {
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require_once __DIR__ . '/paypal_checkout_api.php';
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try {
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$paypalApi = new PayPalCheckoutAPI();
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$capture = $paypalApi->captureOrder($orderId);
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if ($capture['status'] === 'COMPLETED') {
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$pppCaptureResult = ['success' => true];
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} else {
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$pppCaptureResult = ['success' => false, 'error' => 'Payment was not completed. Status: ' . $capture['status']];
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}
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} catch (Exception $e) {
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$pppCaptureResult = ['success' => false, 'error' => $e->getMessage()];
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}
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unset($_SESSION['paypal_order_id'], $_SESSION['paypal_order_trxnum'], $_SESSION['paypal_order_amount']);
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}
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} elseif (isset($_GET['paypal']) && $_GET['paypal'] === 'cancel') {
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$pppCaptureResult = ['success' => false, 'error' => 'Payment was cancelled.'];
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}
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?>
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<?php if ($pppCaptureResult): ?>
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<div class="pp-btn-message" style="padding: 10px; margin-bottom: 10px; border-radius: 5px; max-width: 400px; margin-left: auto; margin-right: auto;
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<?php echo $pppCaptureResult['success']
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? 'background:#e8f5e9; color:#2e7d32; border:1px solid #a5d6a7;'
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: 'background:#ffebee; color:#c62828; border:1px solid #ef9a9a;'; ?>">
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<?php if ($pppCaptureResult['success']): ?>
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<strong>Payment Successful!</strong>
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<?php else: ?>
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<?php echo htmlspecialchars($pppCaptureResult['error']); ?>
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<?php endif; ?>
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</div>
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<?php endif; ?>
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<div style="max-width: 400px; margin: 0 auto; text-align: center;">
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<a href="#" id="<?php echo $containerId; ?>" class="btn btn--primary"><?php echo htmlspecialchars($paypal_button_text); ?></a>
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</div>
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<script>
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(function() {
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var btn = document.getElementById('<?php echo $containerId; ?>');
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btn.addEventListener('click', function(e) {
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e.preventDefault();
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btn.style.pointerEvents = 'none';
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var originalText = btn.textContent;
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btn.textContent = 'Redirecting to PayPal...';
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fetch('/paypal_checkout_create_order.php', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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amount: <?php echo json_encode($owing); ?>,
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trxnum: <?php echo json_encode($trxnum); ?>,
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currency: <?php echo json_encode($paypal_currency); ?>,
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description: <?php echo json_encode($paypal_description); ?>
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})
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})
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.then(function(response) { return response.json(); })
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.then(function(orderData) {
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if (orderData.error || !orderData.approveUrl) {
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throw new Error(orderData.error || 'Could not start PayPal checkout.');
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}
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window.location.href = orderData.approveUrl;
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})
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.catch(function(err) {
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alert('Payment failed: ' + err.message);
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btn.style.pointerEvents = '';
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btn.textContent = originalText;
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});
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});
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})();
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</script>
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