From f54a7676c5d9b49ff45e08753ee658ac07ac96a7 Mon Sep 17 00:00:00 2001
From: Mike Decker <pookmish@gmail.com>
Date: Tue, 14 Nov 2023 22:18:55 -0800
Subject: [PATCH] Add remove tags processor

---
 .../search_api/processor/RemoveTags.php       | 78 +++++++++++++++++++
 stanford_profile_helper.module                |  4 +-
 2 files changed, 81 insertions(+), 1 deletion(-)
 create mode 100644 src/Plugin/search_api/processor/RemoveTags.php

diff --git a/src/Plugin/search_api/processor/RemoveTags.php b/src/Plugin/search_api/processor/RemoveTags.php
new file mode 100644
index 00000000..a3024e2e
--- /dev/null
+++ b/src/Plugin/search_api/processor/RemoveTags.php
@@ -0,0 +1,78 @@
+<?php
+
+namespace Drupal\stanford_profile_helper\Plugin\search_api\processor;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\search_api\Processor\FieldsProcessorPluginBase;
+
+/**
+ * @SearchApiProcessor(
+ *    id = "remove_tags",
+ *    label = @Translation("Remove Specific HTML Tags"),
+ *    description = @Translation("Similiar to 'strip_tags', but choose only
+ *   which tags to strip from fields."), stages = {
+ *      "preprocess_index" = 0,
+ *    }
+ *  )
+ */
+class RemoveTags extends FieldsProcessorPluginBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    $config = parent::defaultConfiguration();
+    $config['all_fields'] = TRUE;
+    $config += [
+      'tags' => [
+        'div',
+        'span',
+      ],
+    ];
+    return $config;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    $form = parent::buildConfigurationForm($form, $form_state);
+    $form['tags'] = [
+      '#type' => 'textarea',
+      '#title' => $this->t('Tags to Remove'),
+      '#description' => $this->t('One tag per line'),
+      '#default_value' => implode("\n", $this->configuration['tags']),
+    ];
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
+    parent::validateConfigurationForm($form, $form_state);
+    $tags = explode("\n", $form_state->getValue('tags'));
+    foreach ($tags as &$tag) {
+      $tag = trim($tag);
+      if (!preg_match('/^(\w+)$/', $tag)) {
+        $form_state->setError($form['tags'], $this->t('Invalid tag.'));
+        return;
+      }
+    }
+    $form_state->setValue('tags', array_filter($tags));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function processFieldValue(&$value, $type) {
+    $text = str_replace('><', '> <', $value);
+    $text = trim(preg_replace('/<!--(.*)-->/Uis', '', $text));
+
+    preg_match_all('/<(\w+)/', $text, $tags_matched);
+    $text_tags = $tags_matched[1];
+    $keep_tags = array_diff($text_tags, $this->configuration['tags']);
+    $value = strip_tags($text, $keep_tags);
+  }
+
+}
diff --git a/stanford_profile_helper.module b/stanford_profile_helper.module
index 4898d1f1..4c20ea25 100644
--- a/stanford_profile_helper.module
+++ b/stanford_profile_helper.module
@@ -421,7 +421,9 @@ function stanford_profile_helper_help_section_info_alter(array &$info) {
 function stanford_profile_helper_preprocess_input__submit__paragraph_action(&$variables) {
   // Change the top banner field button from "Add @type" to "Add Top @type".
   if ($variables['element']['#name'] == 'su_page_banner_stanford_banner_add_more') {
-    $variables['attributes']['value'] = t('Add Top @type', $variables['attributes']['value']->getArguments());
+    if (!is_string($variables['attributes']['value'])) {
+      $variables['attributes']['value'] = t('Add Top @type', $variables['attributes']['value']->getArguments());
+    }
   }
 }