optimizations

app/Services/CollectionPlacementService.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\CollectionSurfacePlacement;
+use Carbon\Carbon;
+
+class CollectionPlacementService
+{
+    public function activePlacementsForSurface(string $surfaceKey)
+    {
+        $now = Carbon::now();
+        return CollectionSurfacePlacement::where('surface_key', $surfaceKey)
+            ->where('is_active', true)
+            ->where(function ($q) use ($now) {
+                $q->whereNull('starts_at')->orWhere('starts_at', '<=', $now);
+            })
+            ->where(function ($q) use ($now) {
+                $q->whereNull('ends_at')->orWhere('ends_at', '>=', $now);
+            })
+            ->orderByDesc('priority')
+            ->get();
+    }
+}