Create new Worker task to remove a contact's content from the database

diff --git a/src/Worker/Contact/RemoveContent.php b/src/Worker/Contact/RemoveContent.php
new file mode 100644 (file)
index 0000000..cc9139c
--- /dev/null
+++ b/src/Worker/Contact/RemoveContent.php
@@ -0,0 +1,90 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2021, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Worker\Contact;
+
+use Friendica\Core\Logger;
+use Friendica\Database\DBA;
+use Friendica\Database\DBStructure;
+use Friendica\Model\Photo;
+use Friendica\Model\Post;
+
+/**
+ * Removes all content related to the given contact id, doesn't remove the contact itself
+ */
+class RemoveContent
+{
+       public static function execute(int $id): array
+       {
+               if (empty($id)) {
+                       return [];
+               }
+
+               // Only delete if the contact is to be deleted
+               $contact = DBA::selectFirst('contact', ['id', 'uid', 'url', 'nick', 'name'], ['deleted' => true, 'id' => $id]);
+               if (!DBA::isResult($contact)) {
+                       return [];
+               }
+
+               Logger::info('Start deleting contact content', ['contact' => $contact]);
+
+               // Now we delete the contact and all depending tables
+               DBA::delete('post-tag', ['cid' => $id]);
+
+               if (DBStructure::existsTable('item')) {
+                       DBA::delete('item', ['author-id' => $id]);
+                       DBA::delete('item', ['owner-id' => $id]);
+                       DBA::delete('item', ['causer-id' => $id]);
+                       DBA::delete('item', ['contact-id' => $id]);
+               }
+
+               DBA::delete('mail', ['contact-id' => $id]);
+               DBA::delete('mail', ['author-id' => $id]);
+
+               Post\ThreadUser::delete(['author-id' => $id]);
+               Post\ThreadUser::delete(['owner-id' => $id]);
+               Post\ThreadUser::delete(['causer-id' => $id]);
+               Post\ThreadUser::delete(['contact-id' => $id]);
+               Post\Thread::delete(['author-id' => $id]);
+               Post\Thread::delete(['owner-id' => $id]);
+               Post\Thread::delete(['causer-id' => $id]);
+               Post\User::delete(['author-id' => $id]);
+               Post\User::delete(['owner-id' => $id]);
+               Post\User::delete(['causer-id' => $id]);
+               Post\User::delete(['contact-id' => $id]);
+               Post::delete(['author-id' => $id]);
+               Post::delete(['owner-id' => $id]);
+               Post::delete(['causer-id' => $id]);
+
+               Photo::delete(['contact-id' => $id]);
+
+               DBA::delete('contact-relation', ['contact-id = ? OR cid = ?', $id, $id]);
+               DBA::delete('event', ['cid' => $id]);
+               DBA::delete('fsuggest', ['cid' => $id]);
+               DBA::delete('post-tag', ['cid' => $id]);
+               DBA::delete('user-contact', ['cid' => $id]);
+
+               DBA::delete('group_member', ['contact-id' => $id]);
+               DBA::delete('intro', ['contact-id' => $id]);
+
+               return $contact;
+       }
+}