From 0812652ce244fcbf8b25c509734a8c9c16a80078 Mon Sep 17 00:00:00 2001
From: Kevin Kaland <kevin@wizonesolutions.com>
Date: Thu, 19 Nov 2015 09:04:33 +0100
Subject: [PATCH] Issue #2359213: Port image-filling support.

Now with real tokens again instead of the fake D7 token! We look at metdata
and stuff to figure out if it's an image field token! For great profit!
---
 src/Controller/HandlePdfController.php | 72 ++++++++++++++++++++++----
 1 file changed, 61 insertions(+), 11 deletions(-)

diff --git a/src/Controller/HandlePdfController.php b/src/Controller/HandlePdfController.php
index 10f2e12..a3e428d 100644
--- a/src/Controller/HandlePdfController.php
+++ b/src/Controller/HandlePdfController.php
@@ -7,7 +7,12 @@
 namespace Drupal\fillpdf\Controller;
 
 use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\file\Entity\File;
+use Drupal\file\FileInterface;
 use Drupal\fillpdf\Component\Helper\FillPdfMappingHelper;
 use Drupal\fillpdf\Entity\FillPdfForm;
 use Drupal\fillpdf\EntityHelper;
@@ -96,32 +101,77 @@ class HandlePdfController extends ControllerBase {
 
     $field_mapping = [
       'fields' => [],
-      // @todo: Image-filling support. Probably both the local and remote plugins could extend the same class.
       'images' => [],
     ];
 
     $mapped_fields = &$field_mapping['fields'];
-//    $image_data = &$field_mapping['images'];
+    $image_data = &$field_mapping['images'];
     foreach ($fields as $field) {
       $pdf_key = $field->pdf_key->value;
       if ($context['sample']) {
         $mapped_fields[$pdf_key] = $pdf_key;
       }
       else {
+        // Get image fields attached to the entity and derive their token names based on the entity types we are working with at the moment.
         $fill_pattern = $field->value->value;
-        $replaced_string = $this->tokenResolver->replace($fill_pattern, $entities);
-
-        // Apply field transformations.
-        // Replace <br /> occurrences with newlines
-        $replaced_string = preg_replace('|<br />|', '
+        $is_image_token = FALSE;
+        $transform_string = TRUE;
+        foreach ($entities as $entity_type => $entities_of_that_type) {
+          $lifo_entities = array_reverse($entities_of_that_type);
+          /**
+           * @var string $entity_id
+           * @var EntityInterface $entity
+           */
+          foreach ($lifo_entities as $entity_id => $entity) {
+            if (method_exists($entity, 'getFields')) {
+              /**
+               * @var ContentEntityInterface $entity
+               * @var string $field_name
+               * @var FieldDefinitionInterface $field_definition
+               */
+              foreach ($entity->getFields() as $field_name => $field_data) {
+                $field_definition = $field_data->getFieldDefinition();
+                if ($field_definition->getType() === 'image') {
+                  if ($fill_pattern === "[{$entity_type}:{$field_name}]") {
+                    // It's a match!
+                    $is_image_token = TRUE;
+                    if (count($entity->{$field_name})) {
+                      /** @var FileInterface $image_file */
+                      $image_file = File::load($entity->{$field_name}->target_id);
+                      $image_path = $image_file->getFileUri();
+                      $mapped_fields[$pdf_key] = "{image}{$image_path}";
+                      $image_path_info = pathinfo($image_path);
+                      // Store the image data to transmit to the remote service if necessary
+                      $file_data = file_get_contents($image_path);
+                      if ($file_data) {
+                        $image_data[$pdf_key] = [
+                          'data' => base64_encode($file_data),
+                          'filenamehash' => md5($image_path_info['filename']) . '.' . $image_path_info['extension'],
+                        ];
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+
+        if (!$is_image_token) {
+          $replaced_string = $this->tokenResolver->replace($fill_pattern, $entities);
+
+          // Apply field transformations.
+          // Replace <br /> occurrences with newlines
+          $replaced_string = preg_replace('|<br />|', '
 ', $replaced_string);
 
-        $form_replacements = FillPdfMappingHelper::parseReplacements($fillpdf_form->replacements->value);
-        $field_replacements = FillPdfMappingHelper::parseReplacements($field->replacements->value);
+          $form_replacements = FillPdfMappingHelper::parseReplacements($fillpdf_form->replacements->value);
+          $field_replacements = FillPdfMappingHelper::parseReplacements($field->replacements->value);
 
-        $replaced_string = FillPdfMappingHelper::transformString($replaced_string, $form_replacements, $field_replacements);
+          $replaced_string = FillPdfMappingHelper::transformString($replaced_string, $form_replacements, $field_replacements);
 
-        $mapped_fields[$pdf_key] = $replaced_string;
+          $mapped_fields[$pdf_key] = $replaced_string;
+        }
       }
     }
 
-- 
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