sfp_api_laravel_ginastica_cerebro/app/Http/Requests/UserRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use App\Enums\{
    UserTypeEnum,
    LanguageEnum
};
use Illuminate\Validation\Rule;

class UserRequest extends FormRequest
{
    public function rules(): array
    {
        $rules = [
            'avatar'    => 'sometimes|nullable|image|max:2048',
            'name'      => 'sometimes|string|nullable|max:255',
            'cpf'       => 'sometimes|nullable|string|max:14',
            'phone'     => 'sometimes|nullable|string|max:20',
            'email'     => 'sometimes|email',
            'password'  => 'sometimes|string|nullable|min:8',
            'user_type' => 'sometimes|nullable|string|exists:user_types,slug',
            'language'  => ['sometimes', Rule::enum(LanguageEnum::class)],
            'state_id'  => 'sometimes|nullable|integer|exists:states,id',
            'unit_id'   => 'sometimes|nullable|integer|exists:units,id',
        ];

        if ($this->isMethod('post')) {
            $rules['name']      = 'required|string|max:255';
            $rules['email']     = 'required|email|unique:users,email';
            $rules['password']  = 'required|string|min:8';
            $rules['user_type'] = 'required|string|exists:user_types,slug';

            if (!$this->has('language')) {
                $this->merge(['language' => LanguageEnum::PORTUGUESE->value]);
            }
        }

        return $rules;
    }
}