From 029bbcfe5dd6abe510bcda8717ed36d4fc61269e Mon Sep 17 00:00:00 2001
From: dannylamb <dlamb@islandora.ca>
Date: Wed, 1 Apr 2020 10:26:08 -0600
Subject: [PATCH] Reindexing parents of extracted text when updated (#767)

---
 .../islandora_text_extraction.module          | 22 +++++++
 .../islandora_text_extraction.services.yml    |  8 +++
 .../src/SearchReindexer.php                   | 65 +++++++++++++++++++
 3 files changed, 95 insertions(+)
 create mode 100644 modules/islandora_text_extraction/islandora_text_extraction.services.yml
 create mode 100644 modules/islandora_text_extraction/src/SearchReindexer.php

diff --git a/modules/islandora_text_extraction/islandora_text_extraction.module b/modules/islandora_text_extraction/islandora_text_extraction.module
index 2b2c1a5d..a9440c90 100644
--- a/modules/islandora_text_extraction/islandora_text_extraction.module
+++ b/modules/islandora_text_extraction/islandora_text_extraction.module
@@ -44,6 +44,28 @@ function islandora_text_extraction_media_presave(MediaInterface $media) {
   }
 }
 
+/**
+ * Implements hook_media_insert().
+ */
+function islandora_text_extraction_media_insert(MediaInterface $media) {
+  if ($media->bundle() != 'extracted_text') {
+    return;
+  }
+
+  \Drupal::service('islandora_text_extraction.search_reindexer')->reindexParent($media);
+}
+
+/**
+ * Implements hook_media_update().
+ */
+function islandora_text_extraction_media_update(MediaInterface $media) {
+  if ($media->bundle() != 'extracted_text') {
+    return;
+  }
+
+  \Drupal::service('islandora_text_extraction.search_reindexer')->reindexParent($media);
+}
+
 /**
  * Implements hook_form_form_id_alter().
  */
diff --git a/modules/islandora_text_extraction/islandora_text_extraction.services.yml b/modules/islandora_text_extraction/islandora_text_extraction.services.yml
new file mode 100644
index 00000000..72d63bdf
--- /dev/null
+++ b/modules/islandora_text_extraction/islandora_text_extraction.services.yml
@@ -0,0 +1,8 @@
+services:
+  logger.channel.islandora_text_extraction:
+      parent: logger.channel_base
+      arguments: ['islandora_text_extraction']
+  islandora_text_extraction.search_reindexer:
+    class: Drupal\islandora_text_extraction\SearchReindexer
+    arguments: ['@islandora.utils', '@logger.channel.islandora_text_extraction']
+
diff --git a/modules/islandora_text_extraction/src/SearchReindexer.php b/modules/islandora_text_extraction/src/SearchReindexer.php
new file mode 100644
index 00000000..791cf9e9
--- /dev/null
+++ b/modules/islandora_text_extraction/src/SearchReindexer.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace Drupal\islandora_text_extraction;
+
+use Drupal\islandora\IslandoraUtils;
+use Drupal\media\MediaInterface;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Creates a GeminiClient as a Drupal service.
+ *
+ * @package Drupal\islandora
+ */
+class SearchReindexer {
+
+  /**
+   * Islandora Utils.
+   *
+   * @var \Drupal\islandora\IslandoraUtils
+   */
+  protected $utils;
+
+  /**
+   * Logger.
+   *
+   * @var \Psr\Log\LoggerInterface
+   */
+  protected $logger;
+
+  /**
+   * Constructor.
+   *
+   * @param \Drupal\islandora\IslandoraUtils $utils
+   *   Islandora utils.
+   * @param \Psr\Log\LoggerInterface $logger
+   *   The logger channel.
+   */
+  public function __construct(IslandoraUtils $utils, LoggerInterface $logger) {
+    $this->utils = $utils;
+    $this->logger = $logger;
+  }
+
+  /**
+   * Reindexes parent node for a media. No-op if parent does not exist.
+   *
+   * @param Drupal\media\MediaInterface $media
+   *   Media whose parent you want to reindex.
+   */
+  public function reindexParent(MediaInterface $media) {
+    $parent = $this->utils->getParentNode($media);
+
+    if ($parent === NULL) {
+      return;
+    }
+
+    $this->logger->debug(
+      "Re-indexing parent node @nid for extracted text @mid using the search_api",
+      ['@nid' => $parent->id(), '@mid' => $media->id()]
+    );
+
+    $parent->original = $parent;
+    search_api_entity_update($parent);
+  }
+
+}