<?php

namespace App\Services\History\Converter;

use App\Models\User;
use Illuminate\Support\Collection;

class WhitelistConverter extends EagerLoadingConverter implements ConverterContact
{
    protected static Collection $items;

    public function handle(mixed $value)
    {
        $ids = array_filter(explode(",", $value));

        if (! $ids) {
            return null;
        }

        $names = [];
        foreach ($ids as $id) {
            if (self::$items->has($id)) {
                $names[] = self::$items->get($id);
            }
        }

        return implode(",", $names);
    }

    public static function eagerLoad(array $items): void
    {
        $ids = [];
        foreach ($items as $item) {
            $ids = [...$ids, ...array_filter(explode(",", $item))];
        }

        $ids = array_unique(array_filter($ids));

        self::$items = User::query()->whereIn("id", $ids)->pluck("name", "id");
    }
}