cmc-sales/php/app/views/documents/pdf_invoice.ctp

<?php
// Generate the Invoice PDF by calling the Go service instead of TCPDF.

$goBaseUrl = AppController::getGoBaseUrlOrFail();
$goEndpoint = $goBaseUrl . '/go/api/pdf/generate-invoice-html';

$outputDir = Configure::read('pdf_directory');

$lineItems = array();
foreach ($document['LineItem'] as $li) {
    $lineItems[] = array(
        'item_number' => $li['item_number'],
        'quantity' => $li['quantity'],
        'title' => $li['title'],
        'description' => isset($li['description']) ? $li['description'] : '',
        'is_html' => true, // Description is always HTML
        'unit_price' => floatval($li['gross_unit_price']),
        'total_price' => floatval($li['gross_price']),
        'net_unit_price' => floatval($li['net_unit_price']),
        'net_price' => floatval($li['net_price']),
        'discount_percent' => floatval($li['discount_percent']),
        'discount_amount_unit' => floatval($li['discount_amount_unit']),
        'discount_amount_total' => floatval($li['discount_amount_total']),
        'option' => intval($li['option']),
        'has_text_prices' => isset($li['has_text_prices']) ? (bool)$li['has_text_prices'] : false,
        'unit_price_string' => isset($li['unit_price_string']) ? $li['unit_price_string'] : '',
        'gross_price_string' => isset($li['gross_price_string']) ? $li['gross_price_string'] : ''
    );
}

$invoiceNumber = '';
if (!empty($document['Document']['cmc_reference'])) {
    $invoiceNumber = $document['Document']['cmc_reference'];
} elseif (!empty($document['Invoice']['title'])) {
    // Fallback so the Go service always receives a number-like value
    $invoiceNumber = $document['Invoice']['title'];
}

$payload = array(
    'document_id' => intval($document['Document']['id']),
    'invoice_number' => $invoiceNumber,
    'invoice_title' => $document['Invoice']['title'],
    'customer_name' => $enquiry['Customer']['name'],
    'contact_email' => $enquiry['Contact']['email'],
    'contact_name' => $enquiry['Contact']['first_name'].' '.$enquiry['Contact']['last_name'],
    'user_first_name' => $enquiry['User']['first_name'],
    'user_last_name' => $enquiry['User']['last_name'],
    'user_email' => $enquiry['User']['email'],
    'your_reference' => isset($enquiry['Enquiry']['customer_reference']) ? $enquiry['Enquiry']['customer_reference'] : ('Enquiry on '.date('j M Y', strtotime($enquiry['Enquiry']['created']))),
    'ship_via' => $document['Invoice']['ship_via'],
    'fob' => $fob,
    'issue_date' => $document['Invoice']['issue_date'], // expects YYYY-MM-DD
    'issue_date_string' => $issue_date_string,
    'currency_symbol' => $currencySymbol,
    'currency_code' => $currencyCode,
    'show_gst' => (bool)$gst,
    'bill_to' => isset($document['Document']['bill_to']) ? $document['Document']['bill_to'] : '',
    'ship_to' => isset($document['Document']['ship_to']) ? $document['Document']['ship_to'] : '',
    'shipping_details' => isset($document['Document']['shipping_details']) ? $document['Document']['shipping_details'] : '',
    'customer_order_number' => isset($job['Job']['customer_order_number']) ? $job['Job']['customer_order_number'] : '',
    'job_title' => isset($job['Job']['title']) ? $job['Job']['title'] : '',
    'payment_terms' => isset($job['Customer']['payment_terms']) ? $job['Customer']['payment_terms'] : '',
    'customer_abn' => isset($job['Customer']['abn']) ? $job['Customer']['abn'] : '',
    'subtotal' => $totals['subtotal'],
    'gst_amount' => $totals['gst'],
    'total' => $totals['total'],
    'line_items' => $lineItems,
    'output_dir' => $outputDir
);

$ch = curl_init($goEndpoint);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));

$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$curlErr = curl_error($ch);
curl_close($ch);

if ($httpCode < 200 || $httpCode >= 300) {
    echo "<p>Failed to generate PDF via Go service (HTTP $httpCode).<br>";
    echo "Endpoint: " . htmlspecialchars($goEndpoint) . "<br>";
    if ($curlErr) {
        echo "Error: " . htmlspecialchars($curlErr) . "<br>";
    }
    if (!empty($response)) {
        echo "Response: " . htmlspecialchars($response) . "<br>";
    }
    echo "</p>";
    exit;
}
?>

<script type="text/javascript">
    window.location.replace("/documents/view/<?=$document['Document']['id']?>");
</script>