refactor(catalog): Complete catalog refactor to simplify its data model and its querying.

source commits: refactor/catalog

app/Domains/Catalog/Models/BundleComponent.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Domains\Catalog\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+#[Fillable([
+    'bundle_catalog_item_id',
+    'component_catalog_item_id',
+    'component_variant_id',
+    'quantity',
+])]
+class BundleComponent extends Model
+{
+    use HasFactory;
+
+    public $timestamps = false;
+
+    protected function casts(): array
+    {
+        return [
+            'bundle_catalog_item_id' => 'integer',
+            'component_catalog_item_id' => 'integer',
+            'component_variant_id' => 'integer',
+            'quantity' => 'integer',
+        ];
+    }
+
+    /** @return BelongsTo<CatalogItem, $this> */
+    public function bundle(): BelongsTo
+    {
+        return $this->belongsTo(CatalogItem::class, 'bundle_catalog_item_id');
+    }
+
+    /** @return BelongsTo<CatalogItem, $this> */
+    public function catalogItem(): BelongsTo
+    {
+        return $this->belongsTo(CatalogItem::class, 'component_catalog_item_id');
+    }
+
+    /** @return BelongsTo<Variant, $this> */
+    public function variant(): BelongsTo
+    {
+        return $this->belongsTo(Variant::class, 'component_variant_id');
+    }
+}