Add contact name to invoice

commerce_billy_pdf_add_contact_name_to_invoice.patch

diff --git a/modules/commerce_billy_pdf/commerce_billy_pdf.module b/modules/commerce_billy_pdf/commerce_billy_pdf.module
index 8af41b0..abe546d 100644
--- a/modules/commerce_billy_pdf/commerce_billy_pdf.module
+++ b/modules/commerce_billy_pdf/commerce_billy_pdf.module
@@ -200,6 +200,22 @@ function commerce_billy_pdf_commerce_order_view($order, $view_mode) {
     $order->content['invoice_logo'] = array(
       '#value' => variable_get('commerce_billy_pdf_logo', 'misc/druplicon.png'),
     );
+    // Get civicrm contact off of membership line item
+    $line_items = $order->commerce_line_items;
+    foreach ($line_items['und'] as $key => $value) {
+      $line_item = commerce_line_item_load($value['line_item_id']);
+      if ($line_item->type === 'membership') {
+        civicrm_initialize();
+        $contact_result = civicrm_api('contact', 'get', array(
+          'version' => 3,
+          'id' => $line_item->field_civicrm_contact['und'][0]['contact_id'],
+        ));
+        $contact = reset($contact_result['values']);
+        $order->content['contact_name'] = array(
+          '#markup' => t('Name: ' . $contact['display_name']),
+        );
+      }
+    }
   }
 }
 
diff --git a/modules/commerce_billy_pdf/templates/commerce_order--commerce_order--pdf.tpl.php b/modules/commerce_billy_pdf/templates/commerce_order--commerce_order--pdf.tpl.php
index a9f13e1..946fa94 100644
--- a/modules/commerce_billy_pdf/templates/commerce_order--commerce_order--pdf.tpl.php
+++ b/modules/commerce_billy_pdf/templates/commerce_order--commerce_order--pdf.tpl.php
@@ -22,6 +22,10 @@
   <div class="invoice-number"><?php print render($content['order_number']); ?></div>
   <div class="order-id"><?php print render($content['order_id']); ?></div>
 
+  <?php if (!empty($content['contact_name'])): ?>
+    <div class="contact-name"><?php print render($content['contact_name']); ?></div>
+  <?php endif; ?>
+
   <div class="line-items">
     <div class="line-items-view"><?php print render($content['commerce_line_items']); ?></div>
     <div class="order-total"><?php print render($content['commerce_order_total']); ?></div>