<?php

declare(strict_types=1);

namespace App\Filament\Support;

use Closure;
use Illuminate\Database\Eloquent\Model;

/**
 * The label of a relationship option whose title is translatable.
 *
 * `->relationship('category', 'name->es')` builds the list fine — that path
 * goes through a query — but to validate a choice Filament reads the title
 * back off the record as a property, `$record->{'name->es'}`, which does not
 * exist. Every choice then came back without a label and was refused as "not
 * in the list of allowed values", whichever one it was. Given this, Filament
 * asks the record instead, in the language of whoever is using the panel.
 *
 * The JSON path stays in `relationship()`: it is still what the search box
 * queries and the list is ordered by.
 */
final class TranslatedOptionLabel
{
    public static function using(string $attribute): Closure
    {
        return fn (Model $record): ?string => $record->getTranslation($attribute, app()->getLocale());
    }
}