<?php

namespace App\Support;

use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Relations\Relation;

/**
 * Caps a listing to a small preview for unauthenticated visitors — always page 1,
 * always a short page, regardless of what page/perPage the request asks for — while
 * authenticated users get the real, full pagination. total() still reflects the true
 * match count either way, so guests see "N results, sign in to see all" rather than a
 * silently truncated list.
 */
class GuestPreview
{
    public const LIMIT = 5;

    public static function paginate(Builder|Relation $query, int $fullPerPage = 25, string $pageName = 'page'): LengthAwarePaginator
    {
        if (self::isLimited()) {
            return $query->paginate(self::LIMIT, ['*'], $pageName, 1);
        }

        return $query->paginate($fullPerPage, ['*'], $pageName);
    }

    public static function isLimited(): bool
    {
        return ! auth()->check();
    }
}