--Restore Unfollow.class.php

Author: BurntimeX

wcfsetup/install/files/lib/system/user/command/Unfollow.class.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace wcf\system\user\command;
+
+use wcf\data\user\follow\UserFollow;
+use wcf\data\user\follow\UserFollowEditor;
+use wcf\data\user\User;
+use wcf\system\user\activity\event\UserActivityEventHandler;
+use wcf\system\user\storage\UserStorageHandler;
+
+/**
+ * Saves that a user is unfollowing another user.
+ *
+ * @author      Marcel Werk
+ * @copyright   2001-2024 WoltLab GmbH
+ * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @since       6.1
+ */
+final class Unfollow
+{
+    public function __construct(private readonly User $user, private readonly User $target)
+    {
+    }
+
+    public function __invoke(): void
+    {
+        $follow = UserFollow::getFollow($this->user->userID, $this->target->userID);
+
+        if ($follow->followID) {
+            $followEditor = new UserFollowEditor($follow);
+            $followEditor->delete();
+
+            $this->removeActivityEvent();
+        }
+
+        $this->resetUserStorage();
+    }
+
+    private function removeActivityEvent(): void
+    {
+        UserActivityEventHandler::getInstance()->removeEvent(
+            'com.woltlab.wcf.user.recentActivityEvent.follow',
+            $this->target->userID
+        );
+    }
+
+    private function resetUserStorage(): void
+    {
+        UserStorageHandler::getInstance()->reset([$this->target->userID], 'followerUserIDs');
+        UserStorageHandler::getInstance()->reset([$this->user->userID], 'followingUserIDs');
+    }
+}