sfp_api_laravel_serprati/app/Http/Requests/UserRequest.php

<?php

namespace App\Http\Requests;

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

class UserRequest extends FormRequest
{
    public function rules(): array
    {
        $emailUnique        = 'unique:users,email';
        $cpfUnique          = 'unique:users,cpf';
        $registrationUnique = 'unique:users,registration';
        if ($this->isMethod('put') && $this->route('id')) {
            $emailUnique        = 'unique:users,email,' . $this->route('id');
            $cpfUnique          = 'unique:users,cpf,' . $this->route('id');
            $registrationUnique = 'unique:users,registration,' . $this->route('id');
        }

        $rules = [
            'avatar'         => 'sometimes|string|nullable',
            'name'           => 'sometimes|string|nullable',
            'email'          => ['sometimes', 'email', $emailUnique],
            'password'       => 'sometimes|string|nullable',
            'type'           => ['sometimes', Rule::enum(UserTypeEnum::class)],
            'language'       => ['sometimes', Rule::enum(LanguageEnum::class)],
            'cpf'            => ['sometimes', 'nullable', 'string', 'max:14', $cpfUnique],
            'registration'   => ['sometimes', 'nullable', 'string', 'max:50', $registrationUnique],
            'status'         => ['sometimes', Rule::enum(UserStatusEnum::class)],
            'admission_date' => 'sometimes|nullable|date',
            'expiry_date'    => 'sometimes|nullable|date',
            'position_id'    => 'sometimes|nullable|integer|exists:positions,id',
            'sector_id'      => 'sometimes|nullable|integer|exists:sectors,id',
        ];

        if ($this->isMethod('post')) {
            $rules['name']     = 'required|string|max:255';
            $rules['email']    = ['required', 'email', $emailUnique];
            $rules['password'] = 'required|string|min:6';

            if ($this->input('type') === UserTypeEnum::ASSOCIADO->value) {
                $rules['password']     = 'nullable|string|min:6';
                $rules['registration'] = ['required', 'string', 'max:50', $registrationUnique];
            }

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

        return $rules;
    }
}