OEL-155: Add upper case processor & date parsing.

src/Plugin/search_api/backend/SearchApiEuropaSearchBackend.php

@@ -7,6 +7,7 @@
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Plugin\PluginFormInterface;
 use Drupal\Core\Site\Settings;
+use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
 use Drupal\search_api\Backend\BackendPluginBase;
 use Drupal\search_api\IndexInterface;
 use Drupal\search_api\Plugin\PluginFormTrait;
@@ -26,8 +27,6 @@
 /**
  * Europa Search backend for Search API.
  *
- * @SuppressWarnings(PHPMD.NPathComplexity)
- *
  * @SearchApiBackend(
  *   id = "search_api_europa_search",
  *   label = @Translation("Europa Search"),
@@ -496,7 +495,7 @@ protected function getDocuments(IndexInterface $index, array $items): array {
 
       /** @var \Drupal\search_api\Item\FieldInterface $field */
       foreach ($item_fields as $name => $field) {
-        $this->addIndexField($metadata, $name, $field->getValues(), $field->getType());
+        $this->prepareField($metadata, $name, $field->getValues(), $field->getType());
       }
 
       $document->setMetadata($metadata);
@@ -543,7 +542,7 @@ protected function destructReference(string $reference): array {
   /**
    * Helper method for indexing.
    *
-   * Adds $value with field name $key to the document $doc. The format of $value
+   * Adds $value with field name $key to the document. The format of $value
    * is the same as specified in
    * \Drupal\search_api\Backend\BackendSpecificInterface::indexItems().
    *
@@ -556,10 +555,17 @@ protected function destructReference(string $reference): array {
    * @param string $type
    *   The field type.
    */
-  protected function addIndexField(array &$metadata, string $key, array $values, $type): void {
+  protected function prepareField(array &$metadata, string $key, array $values, $type): void {
     foreach ($values as $value) {
       if (NULL !== $value) {
         switch ($type) {
+          case 'date':
+            $value = $this->formatDate($value);
+            if ($value === FALSE) {
+              continue(2);
+            }
+            break;
+
           case 'boolean':
             $value = (bool) $value;
             break;
@@ -588,4 +594,54 @@ protected function addIndexField(array &$metadata, string $key, array $values, $
     }
   }
 
+  /**
+   * Tries to format given date for ingestion.
+   *
+   * @param int|string $input
+   *   The date to format (timestamp or string).
+   *
+   * @return bool|string
+   *   The formatted date as string or FALSE in case of invalid input.
+   */
+  public function formatDate($input) {
+    try {
+      $input = is_numeric($input) ? (int) $input : new \DateTime($input, timezone_open(DateTimeItemInterface::STORAGE_TIMEZONE));
+    }
+    catch (\Exception $e) {
+      return FALSE;
+    }
+
+    switch (TRUE) {
+      case $input instanceof \DateTimeInterface:
+        $input = clone $input;
+        break;
+
+      case \is_string($input):
+      case is_numeric($input):
+        // If date/time string: convert to timestamp first.
+        if (\is_string($input)) {
+          $input = strtotime($input);
+        }
+        try {
+          $input = new \DateTime('@' . $input);
+        }
+        catch (\Exception $e) {
+          $input = FALSE;
+        }
+        break;
+
+      default:
+        $input = FALSE;
+        break;
+    }
+
+    if ($input) {
+      // When we get here the input is always a datetime object.
+      $input = $input->setTimezone(new \DateTimeZone('UTC'));
+      return $input->format(\DateTimeInterface::RFC3339_EXTENDED);
+    }
+
+    return FALSE;
+  }
+
 }

src/Plugin/search_api/processor/SearchApiEuropaSearchUpperProcessorUpperKeys.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Drupal\oe_search\Plugin\search_api\processor;
+
+use Drupal\search_api\Processor\FieldsProcessorPluginBase;
+
+/**
+ * Strips HTML tags from fulltext fields and decodes HTML entities.
+ *
+ * @SearchApiProcessor(
+ *   id = "search_api_europa_search_processor_upper_keys",
+ *   label = @Translation("Upper Case Field Keys"),
+ *   description = @Translation("Upper case the field keys."),
+ *   stages = {
+ *     "pre_index_save" = 0,
+ *     "preprocess_index" = 0,
+ *   }
+ * )
+ */
+class SearchApiEuropaSearchUpperProcessorUpperKeys extends FieldsProcessorPluginBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preprocessIndexItems(array $items) {
+    /** @var \Drupal\search_api\Item\ItemInterface $item */
+    foreach ($items as $item) {
+      $fields = $item->getFields();
+      $uppercase_fields = [];
+      foreach ($fields as $name => $field) {
+        $uppercase_fields[strtoupper($name)] = $field;
+      }
+      $item->setFields($uppercase_fields);
+    }
+  }
+
+}