feat: implement product creation workflow with variants, attribute definitions, and validation logic

app/Domains/Catalog/Models/Attribute.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace App\Domains\Catalog\Models;
+
+use App\Domains\Shared\Enums\FieldType;
+use App\Domains\Tenant\Models\Tenant;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+#[Fillable([
+    'tenant_codigo',
+    'codigo',
+    'nombre',
+    'is_required',
+    'metadata_schema',
+    'type',
+])]
+class Attribute extends Model
+{
+    use HasFactory;
+
+    protected $table = 'attribute';
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'is_required' => 'boolean',
+            'metadata_schema' => 'array',
+            'type' => FieldType::class,
+        ];
+    }
+
+    /**
+     * @return BelongsTo<Tenant, $this>
+     */
+    public function tenant(): BelongsTo
+    {
+        return $this->belongsTo(Tenant::class, 'tenant_codigo', 'codigo');
+    }
+
+    /**
+     * @return HasMany<AttributeOption, $this>
+     */
+    public function options(): HasMany
+    {
+        return $this->hasMany(AttributeOption::class, 'attribute_id')->orderBy('sort_order');
+    }
+
+    /**
+     * @return HasMany<ProductVariantDefinition, $this>
+     */
+    public function variantDefinitions(): HasMany
+    {
+        return $this->hasMany(ProductVariantDefinition::class, 'attribute_id');
+    }
+}