optimizations

app/Jobs/ScanCollectionDuplicateCandidatesJob.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Jobs;
+
+use App\Models\Collection;
+use App\Models\User;
+use App\Services\CollectionHealthService;
+use App\Services\CollectionMergeService;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Queue\SerializesModels;
+
+final class ScanCollectionDuplicateCandidatesJob implements ShouldQueue
+{
+    use Dispatchable;
+    use InteractsWithQueue;
+    use Queueable;
+    use SerializesModels;
+
+    public int $tries = 3;
+
+    /** @var array<int, int> */
+    public array $backoff = [30, 180, 600];
+
+    public function __construct(
+        public readonly int $collectionId,
+        public readonly ?int $actorUserId = null,
+        public readonly int $limit = 5,
+    ) {
+        $this->onQueue((string) config('collections.v5.queue.name', 'collections'));
+    }
+
+    public function handle(CollectionMergeService $merge, CollectionHealthService $health): void
+    {
+        $collection = Collection::query()->find($this->collectionId);
+
+        if (! $collection) {
+            return;
+        }
+
+        $actor = $this->actorUserId ? User::query()->find($this->actorUserId) : null;
+
+        $merge->syncSuggestedCandidates($collection, $actor, $this->limit);
+        $health->refresh($collection, $actor, 'duplicate-scan');
+    }
+}