Feature: Adding Facets, Updating Indexers

src/Catalog/Services/CollectionIndexer.php

@@ -5,6 +5,7 @@ namespace Modules\Core\Catalog\Services;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Lunar\Models\Collection;
+use Lunar\Models\Product;
 use Lunar\Search\CollectionIndexer as BaseCollectionIndexer;
 
 /**
@@ -20,6 +21,15 @@ use Lunar\Search\CollectionIndexer as BaseCollectionIndexer;
  *   - slugs (filterable) — every locale's Url::slug, so getBySlug() resolves from the
  *     index directly, no database read
  *   - thumbnail (display) — the collection's thumbnail image URL
+ *   - ancestors (display) — [{id, name}, ...] ordered root-first, so a breadcrumb can
+ *     render directly from a single indexed document with zero extra queries
+ *   - product_count (display) — how many products are in this collection or any of
+ *     its descendants, read from the *product* Meilisearch index at collection-index
+ *     time (via `collection_ids`, see Modules\Core\Catalog\Services\ProductIndexer) —
+ *     matches what ProductService::list(ProductFilters(collectionId: ...)) would
+ *     return, not just direct assignment. Reflects the product index's state as of
+ *     the last collection reindex, so re-run `lunar:search:index --refresh` after a
+ *     product reindex if this needs to be current.
  *
  * New fields aren't filterable/sortable in Meilisearch until `php artisan
  * lunar:meilisearch:setup` re-syncs index settings, and existing documents need
@@ -49,7 +59,7 @@ class CollectionIndexer extends BaseCollectionIndexer
 
     public function makeAllSearchableUsing(Builder $query): Builder
     {
-        return parent::makeAllSearchableUsing($query)->with(['urls', 'media']);
+        return parent::makeAllSearchableUsing($query)->with(['urls', 'media', 'ancestors']);
     }
 
     public function toSearchableArray(Model $model): array
@@ -63,6 +73,18 @@ class CollectionIndexer extends BaseCollectionIndexer
         $data['collection_group_id'] = $model->collection_group_id;
         $data['slugs'] = $model->urls->pluck('slug')->unique()->values()->all();
         $data['thumbnail'] = $model->getThumbnailImage() ?: null;
+        $data['ancestors'] = $model->ancestors
+            ->sortBy('_lft')
+            ->map(fn ($ancestor) => [
+                'id' => $ancestor->id,
+                'name' => $ancestor->translateAttribute('name'),
+            ])
+            ->values()
+            ->all();
+        $data['product_count'] = Product::search('')
+            ->options(['filter' => "collection_ids = \"{$model->id}\""])
+            ->paginateRaw(perPage: 1, page: 1)
+            ->total();
 
         return $data;
     }