sls/app/DTOs/IceCandidatesDto.php

<?php

namespace App\DTOs;

use ArrayIterator;
use Countable;
use Illuminate\Contracts\Support\Arrayable;
use IteratorAggregate;
use JsonSerializable;
use Traversable;

class IceCandidatesDto implements Arrayable, Countable, IteratorAggregate, JsonSerializable
{
    /**
     * @param  array<IceCandidateDto>  $servers
     */
    public function __construct(
        public readonly array $servers = []
    ) {}

    public static function fromArray(array $items): self
    {
        $servers = [];
        foreach ($items as $item) {
            if ($item instanceof IceCandidateDto) {
                $servers[] = $item;
            } elseif (is_array($item)) {
                $servers[] = IceCandidateDto::fromArray($item);
            }
        }

        return new self($servers);
    }

    public static function defaultStun(): self
    {
        return new self([
            new IceCandidateDto(urls: [
                'stun:stun.l.google.com:19302',
                'stun:stun.cloudflare.com:3478',
            ]),
        ]);
    }

    public function toArray(): array
    {
        return array_map(fn (IceCandidateDto $server) => $server->toArray(), $this->servers);
    }

    public function jsonSerialize(): array
    {
        return $this->toArray();
    }

    public function count(): int
    {
        return count($this->servers);
    }

    public function isEmpty(): bool
    {
        return empty($this->servers);
    }

    public function getIterator(): Traversable
    {
        return new ArrayIterator($this->servers);
    }
}