<?php

namespace Coroutine\Server;

class Transport
{

	/**
	 * @var array<Struct>
	 */
	private array $clients = [];


	/**
	 * @param int    $fd
	 * @param Struct $data
	 * @return void
	 */
	public function add(int $fd, Struct $data): void
	{
		if (isset($this->clients[$fd])) {
			$this->clients[$fd]->ws->close();
		}
		$this->clients[$fd] = $data;
	}

	/**
	 * @param int   $fd
	 * @param mixed $data
	 * @return void
	 */
	public function send(int $fd, mixed $data): void
	{
		if (isset($this->clients[$fd])) {
			$this->clients[$fd]->ws->push($data);
		}
	}


	/**
	 * @param int $fd
	 * @return void
	 */
	public function close(int $fd): void
	{
		if (isset($this->clients[$fd])) {
			$this->clients[$fd]->ws->close();
		}
	}


	/**
	 * @param int      $fd
	 * @return void
	 */
	public function remove(int $fd): void
	{
		if ($this->clients[$fd]) {
			$this->clients[$fd]->ws->close();
		}
		unset($this->clients[$fd]);
	}


	/**
	 * @return array
	 */
	public function getLists(): array
	{
		$array = [];
		foreach ($this->clients as $fd => $client) {
			$array[] = [
				'userId'   => $fd,
				'nickname' => $client->user['nickname'],
			];
		}
		return $array;
	}


	/**
	 * @return int
	 */
	public function size(): int
	{
		return count($this->clients);
	}
}