WIP

app/Http/Controllers/Api/V1/Filters/FilterController.php

@@ -6,6 +6,7 @@ use App\Http\Controllers\Api\V1\Filters\Requests\FilterIndexRequest;
 use App\Http\Controllers\Controller;
 use App\Models\Ecommerce\Channel\Channel;
 use App\Models\Ecommerce\Product\Brand\Brand;
+use Illuminate\Support\Facades\DB;
 use App\Models\Ecommerce\Product\Category\Category;
 use App\Models\Ecommerce\Product\Collection\Collection;
 use Illuminate\Http\JsonResponse;
@@ -45,7 +46,7 @@ class FilterController extends Controller
         }
 
         if ($this->shouldFilterByCollection()) {
-            return $this->filterByCategoryResource(Collection::find($this->request->collection_id));
+            return $this->categoriesFor();
         }
 
         if ($this->shouldFilterByBrand()) {
@@ -111,6 +112,35 @@ class FilterController extends Controller
                 ->unique('categories.id');
     }
 
+    /**
+     * Categories for a resource
+     */
+    private function categoriesFor($resource)
+    {
+        return DB::table('categories as c')
+            ->select('c.id', 'c.parent_id', 'c.name')
+            ->where('c.is_visible', true)
+            ->whereExists(function ($query) {
+                $query->select(DB::raw(1))
+                    ->from('product_has_relations as phr_cat')
+                    ->join('products as p', 'p.id', '=', 'phr_cat.product_id')
+                    ->join('product_has_relations as phr_chan', 'phr_chan.product_id', '=', 'p.id')
+                    ->whereColumn('phr_cat.productable_id', 'c.id')
+                    ->where('phr_cat.productable_type', 'category')
+                    ->where('phr_chan.productable_type', 'channel')
+                    ->where('phr_chan.productable_id', 6)
+                    ->where('p.is_visible', true)
+                    ->whereNull('p.parent_id')
+                    ->where('p.stock', '>', 0);
+            })
+            ->get()
+            ->map(fn ($category) => [
+                'id' => $category->id,
+                'parent_id' => $category->parent_id,
+                'name' => $category->name,
+            ]);
+    }
+
     /**
      * Check if request should be filtered by category
      */