sfp_api_laravel_serprati/app/Http/Requests/StoreItemRequest.php

<?php

namespace App\Http\Requests;

use App\Enums\StoreItemStatusEnum;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class StoreItemRequest extends FormRequest
{
    public function rules(): array
    {
        $rules = [
            'name'            => 'sometimes|string|max:255',
            'description'     => 'sometimes|nullable|string',
            'category_id'     => 'sometimes|nullable|integer|exists:categories,id',
            'price'           => 'sometimes|nullable|numeric|min:0',
            'associate_price' => 'sometimes|nullable|numeric|min:0',
            'supplier_price'  => 'sometimes|nullable|numeric|min:0',
            'status'          => ['sometimes', Rule::enum(StoreItemStatusEnum::class)],

            'variations'                       => 'sometimes|array',
            'variations.*.variation_type'      => 'required_with:variations|string|in:tamanho,cor,modelo',
            'variations.*.variation_label'     => 'required_with:variations|string|max:100',
            'variations.*.variation_value'     => 'nullable|numeric|min:0',
            'variations.*.stock'               => 'nullable|integer|min:0',
        ];

        if ($this->isMethod('post')) {
            $rules['name'] = 'required|string|max:255';
        }

        return $rules;
    }
}