<?php
defined(page_security_key) or exit;

if (debug && debug_id == $_SESSION['authorization']['id']) {
    ini_set('display_errors', '1');
    ini_set('display_startup_errors', '1');
    error_reporting(E_ALL);
}

include_once './assets/functions.php';
include_once './settings/settings_redirector.php';

// Check if allowed
if (isAllowed('order', $_SESSION['authorization']['permissions'], $_SESSION['authorization']['permission'], 'R') === 0) {
    header('location: index.php');
    exit;
}

// Get transaction ID from POST or GET (for HTML output)
$order_number = $_POST['txn_id'] ?? $_GET['txn_id'] ?? '';

if (empty($order_number)) {
    header('Location: index.php?page=orders');
    exit;
}

// Connect to database
$pdo = dbConnect($dbname);

//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// Get detailed invoice data
//+++++++++++++++++++++++++++++++++++++++++++++++++++++

$api_url = '/v2/invoice/list=invoice&txn_id=' . $order_number;
$invoice_data = ioServer($api_url, '');
$invoice_data = json_decode($invoice_data, true);

//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// Determine invoice language
//+++++++++++++++++++++++++++++++++++++++++++++++++++++
$available_languages = [
    'NL' => 'NL',
    'BE' => 'NL', 
    'US' => 'US',
    'GB' => 'US',
    'DE' => 'DE',
    'FR' => 'FR',
    'ES' => 'ES'
];

$invoice_language = 'US'; // Default
if (!empty($invoice_data['customer']['language'])) {
    $invoice_language = strtoupper($invoice_data['customer']['language']);
} elseif (!empty($invoice_data['customer']['country']) && isset($available_languages[strtoupper($invoice_data['customer']['country'])])) {
    $invoice_language = $available_languages[strtoupper($invoice_data['customer']['country'])];
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// Generate invoice HTML
//+++++++++++++++++++++++++++++++++++++++++++++++++++++

list($message,$pdf, $customer_email, $order_id) = generateSoftwareInvoice($invoice_data, $order_number, $invoice_language);


//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// Check for HTML output request
//+++++++++++++++++++++++++++++++++++++++++++++++++++++
if (isset($_GET['output']) && $_GET['output'] === 'html') {
    // Output HTML directly to browser
    echo $message;
    exit;
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// Initialize DomPDF
//+++++++++++++++++++++++++++++++++++++++++++++++++++++
use Dompdf\Dompdf;
use Dompdf\Options;

$options = new Options();
$options->set('isRemoteEnabled', true);
$dompdf = new Dompdf($options);

// Load HTML content
$dompdf->loadHtml($pdf);

// Setup paper size and orientation
$dompdf->setPaper('A4', 'portrait');

// Render the HTML as PDF
$dompdf->render();

$file_name = 'Factuur - ' . $order_id;


//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// Handle different actions
//+++++++++++++++++++++++++++++++++++++++++++++++++++++

// Email invoice to customer
if (isset($_POST['email_invoice'])) {
    $to = $customer_email;
    $subject = 'Factuur - ' . $order_id;
    $attachment = $dompdf->output();
    $attachment_name = $file_name . '.pdf';

    $header_redirect = 'Location: index.php?page=order&txn_id=' . $order_id . '&success=invoice_sent';
    
    // Send to PHPMailer
    send_mail($to, $subject, $message, $attachment, $attachment_name);
    
    header($header_redirect);
    exit;
}

// Email invoice to admin/bookkeeping
if (isset($_POST['email_invoice_to_admin'])) {
    $to = $customer_email;
    $subject = 'Factuur - ' . $order_id;
    $attachment = $dompdf->output();
    $attachment_name = $file_name . '.pdf';

    $header_redirect = 'Location: index.php?page=order&txn_id=' . $order_id . '&success=invoice_sent_admin';
    
    // Send to bookkeeping if configured
    if (invoice_bookkeeping && email_bookkeeping) {
        send_mail(email_bookkeeping, $subject, $message, $attachment, $attachment_name);
    }
    
    header($header_redirect);
    exit;
}

// Show invoice in browser
if (isset($_GET['show_invoice'])) {
    // Clean output buffer to prevent corrupted PDF
    if (ob_get_level()) {
        ob_end_clean();
    }
    
    // Stream PDF to browser
    $dompdf->stream($file_name . ".pdf", array("Attachment" => false));
    exit;
}

// If no action specified, redirect back
header('Location: index.php?page=order&txn_id=' . $order_number);
exit;

?>