// ✅ Handle AJAX ticket creation (guest + logged-in)
add_action('wp_ajax_nopriv_srt_submit_ticket', 'srt_create_ticket');
add_action('wp_ajax_srt_submit_ticket', 'srt_create_ticket');

function srt_create_ticket() {
    $admin_email = get_option('admin_email');

    if (!isset($_POST['srt_nonce']) || !wp_verify_nonce($_POST['srt_nonce'], 'srt_submit_ticket_nonce')) {
        wp_mail($admin_email, '❌ Support Ticket Error: Nonce Failed', print_r($_POST, true));
        wp_send_json_error(['message' => 'Security check failed']);
    }

    $is_guest     = isset($_POST['is_guest']) && $_POST['is_guest'] === '1';
    $user_id      = get_current_user_id();
    $order_id     = intval($_POST['srt_order'] ?? 0);
    $issue_type   = sanitize_text_field($_POST['srt_issue_type'] ?? '');
    $subject      = sanitize_text_field($_POST['srt_subject'] ?? '');
    $message      = wp_kses_post($_POST['srt_message'] ?? '');
    $new_address  = sanitize_textarea_field($_POST['srt_new_address'] ?? '');
    $guest_email  = $is_guest ? sanitize_email($_POST['srt_email'] ?? '') : '';
    $guest_name   = $is_guest ? sanitize_text_field($_POST['srt_name'] ?? '') : '';
    $guest_postcode = $is_guest ? sanitize_text_field($_POST['srt_postcode'] ?? '') : '';

    if (!$order_id || !$subject || !$message || ($is_guest && empty($guest_email))) {
        wp_mail($admin_email, '❌ Support Ticket Error: Missing Fields', print_r($_POST, true));
        wp_send_json_error(['message' => 'Missing required fields']);
    }

    $ticket_id = wp_insert_post([
        'post_type'    => 'support_ticket',
        'post_title'   => wp_strip_all_tags($subject),
        'post_content' => $message,
        'post_status'  => 'publish',
        'post_author'  => $user_id ?: 0,
    ]);

    if (is_wp_error($ticket_id)) {
        wp_mail($admin_email, '❌ Ticket Creation Failed', $ticket_id->get_error_message() . "\n\n" . print_r($_POST, true));
        wp_send_json_error(['message' => 'Ticket creation failed.']);
    }

    update_post_meta($ticket_id, '_srt_order', $order_id);
    update_post_meta($ticket_id, '_srt_issue_type', $issue_type);
    update_post_meta($ticket_id, '_srt_new_address', $new_address);
    update_post_meta($ticket_id, '_srt_status', 'open');
    update_post_meta($ticket_id, '_srt_ip', $_SERVER['REMOTE_ADDR'] ?? 'unknown');

    if ($is_guest) {
        update_post_meta($ticket_id, 'srt_guest', '1');
        update_post_meta($ticket_id, 'srt_email', $guest_email);
        update_post_meta($ticket_id, 'srt_name', $guest_name);
        update_post_meta($ticket_id, 'srt_postcode', $guest_postcode);
    }

    if (!empty($_FILES['srt_attachments']['name'][0])) {
        require_once ABSPATH . 'wp-admin/includes/file.php';
        require_once ABSPATH . 'wp-admin/includes/media.php';
        require_once ABSPATH . 'wp-admin/includes/image.php';

        $files = $_FILES['srt_attachments'];
        foreach ($files['name'] as $i => $name) {
            if (empty($name)) continue;
            $file = [
                'name'     => $files['name'][$i],
                'type'     => $files['type'][$i],
                'tmp_name' => $files['tmp_name'][$i],
                'error'    => $files['error'][$i],
                'size'     => $files['size'][$i]
            ];
            $upload = media_handle_sideload($file, $ticket_id);
            if (is_wp_error($upload)) {
                wp_mail($admin_email, '❌ File Upload Error', $upload->get_error_message());
            } else {
                add_post_meta($ticket_id, '_srt_attachment', $upload);
            }
        }
    }

    if (!$user_id && $is_guest && $guest_email && $order_id) {
        $order = wc_get_order($order_id);
        if ($order && strtolower($order->get_billing_email()) === strtolower($guest_email)) {
            update_post_meta($ticket_id, '_linked_to_guest_order', $order_id);
        }
    }

    wp_send_json_success([
        'redirect_url' => home_url("/support-ticket-view/?ticket={$ticket_id}")
    ]);
}
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