+ /**
+ * Prepare the item array for an activity
+ *
+ * @param array $activity Activity array
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ * @throws \ImagickException
+ */
+ public static function addTag($activity)
+ {
+ if (empty($activity['object_content']) || empty($activity['object_id'])) {
+ return;
+ }
+
+ foreach ($activity['receiver'] as $receiver) {
+ $item = Item::selectFirst(['id', 'tag', 'origin', 'author-link'], ['uri' => $activity['target_id'], 'uid' => $receiver]);
+ if (!DBA::isResult($item)) {
+ // We don't fetch missing content for this purpose
+ continue;
+ }
+
+ if (($item['author-link'] != $activity['actor']) && !$item['origin']) {
+ Logger::info('Not origin, not from the author, skipping update', ['id' => $item['id'], 'author' => $item['author-link'], 'actor' => $activity['actor']]);
+ continue;
+ }
+
+ // To-Do:
+ // - Check if "blocktag" is set
+ // - Check if actor is a contact
+
+ if (!stristr($item['tag'], trim($activity['object_content']))) {
+ $tag = $item['tag'] . (strlen($item['tag']) ? ',' : '') . '#[url=' . $activity['object_id'] . ']'. $activity['object_content'] . '[/url]';
+ Item::update(['tag' => $tag], ['id' => $item['id']]);
+ Logger::info('Tagged item', ['id' => $item['id'], 'tag' => $activity['object_content'], 'uri' => $activity['target_id'], 'actor' => $activity['actor']]);
+ }
+ }
+ }
+