fix: use user Deleting event instead of Deleted to access user posts

src/Listener/UserEventSubscriber.php

@@ -2,37 +2,32 @@
 
 namespace ACPL\FlarumLSCache\Listener;
 
-use Flarum\User\Event\{AvatarChanged, Deleted, GroupsChanged, Renamed};
+use Flarum\User\Event\{AvatarChanged, Deleting, GroupsChanged, Renamed};
 use Illuminate\Contracts\Events\Dispatcher;
 
 class UserEventSubscriber extends AbstractCachePurgeSubscriber
 {
     public function subscribe(Dispatcher $events): void
     {
-        $shared = [AvatarChanged::class, Deleted::class, GroupsChanged::class, Renamed::class];
+        $shared = [AvatarChanged::class, Deleting::class, GroupsChanged::class, Renamed::class];
         foreach ($shared as $event) {
             $this->addPurgeListener($events, $event, [$this, 'handleUserWithPosts']);
         }
     }
 
     /** Purge discussions where user has posted. */
-    public function handleUserWithPosts(AvatarChanged|GroupsChanged|Renamed $event): void
+    public function handleUserWithPosts(AvatarChanged|Deleting|GroupsChanged|Renamed $event): void
     {
         $this->purger->addPurgeTags([
             "user_{$event->user->id}",
             "user_{$event->user->username}",
             'posts',
             'discussions',
-            ...array_map(fn ($id) => "discussion_$id", $discussions),
+            // TODO: If user has a lot of discussions chunk it and push to the queue job
+            ...array_map(
+                fn ($id) => "discussion_$id",
+                $event->user->posts()->pluck('discussion_id')->toArray(),
+            ),
         ]);
-
-        $discussionCount = $event->user->posts()->getRelation('discussion')->distinct()->count();
-        if ($discussionCount < 50) {
-            /** @phpstan-ignore-next-line Call to an undefined method Illuminate\Database\Eloquent\Relations\Relation::pluck(). */
-            $discussions = $event->user->posts()->getRelation('discussion')->pluck('id')->toArray();
-            $this->purger->addPurgeTags([
-
-            ]);
-        }
     }
 }