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 ($this->shouldFilterByBrand()) {
@@ -62,29 +63,29 @@ class FilterController extends Controller
     private function brands()
     {
         if ($this->shouldFilterByBrand()) {
-            return Brand::query()->where('id', $this->request->brand_id)->get(['id', 'name']);
+            return Brand::where('id', $this->request->brand_id)->get(['id', 'name']);
         }
 
         if ($this->shouldFilterByCategory()) {
-            $brands = Category::query()->find($this->request->category_id)->products()
+            $brands = Category::find($this->request->category_id)->products()
                 ->where('products.is_visible', true)
                 ->where('products.parent_id', null)
                 ->where('products.stock', '>', 0)
                 ->distinct('products.brand_id')
                 ->pluck('products.brand_id');
 
-            return Brand::query()->whereIntegerInRaw('id', $brands)->get(['id', 'name']);
+            return Brand::whereIntegerInRaw('id', $brands)->get(['id', 'name']);
         }
 
         if ($this->shouldFilterByCollection()) {
-            $brands = Collection::query()->find($this->request->collection_id)->products()
+            $brands = Collection::find($this->request->collection_id)->products()
                 ->where('products.is_visible', true)
                 ->where('products.parent_id', null)
                 ->where('products.stock', '>', 0)
                 ->distinct('products.brand_id')
                 ->pluck('products.brand_id');
 
-            return Brand::query()->whereIntegerInRaw('id', $brands)->get(['id', 'name']);
+            return Brand::whereIntegerInRaw('id', $brands)->get(['id', 'name']);
         }
 
         return Brand::query()->where('is_visible', true)->ordered()->get(['id', 'name']);
@@ -102,12 +103,36 @@ class FilterController extends Controller
             ->distinct('products.id')
             ->pluck('products.id');
 
-        return Category::query()
-            ->distinct('categories.id')
-            ->where('is_visible', true)
-            ->join('product_has_relations', 'categories.id', '=', 'product_has_relations.productable_id')
-            ->where('product_has_relations.productable_type', '=', 'category')
-            ->whereIntegerInRaw('product_has_relations.product_id', $products)
+        return Category::where('is_visible', true)
+                ->ordered()
+                ->join('product_has_relations', 'categories.id', '=', 'product_has_relations.productable_id')
+                ->where('product_has_relations.productable_type', '=', 'category')
+                ->whereIntegerInRaw('product_has_relations.product_id', $products)
+                ->get(['categories.id', 'categories.parent_id', 'categories.name'])
+                ->unique('categories.id');
+    }
+
+    /**
+     * Categories for a resource
+     */
+    private function categoriesFor($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,