<?php

namespace App\Net;

use Evenement\EventEmitter;
use JumPHP\Net\Tcp;
use JumPHP\Net\TcpConnection;

/**
 * A Link over $engine->tcp(): a plain socket on the desktop, the playground's TCP bridge in the browser
 * (the application must be approved for TCP by the administrator, docs/tcp.md).
 */
final class TcpLink extends EventEmitter implements Link
{
    private TcpConnection $connection;

    public function __construct(Tcp $tcp, string $host, int $port)
    {
        $this->connection = $tcp->connect($host, $port);
        foreach (['open', 'data', 'close', 'error'] as $event) {
            $this->connection->on($event, fn (...$args) => $this->emit($event, $args));
        }
    }

    public function write(string $bytes): void
    {
        $this->connection->write($bytes);
    }

    public function close(): void
    {
        $this->connection->close();
    }
}