<?php

	namespace kwebsocket\core;

	class wsinterop{


		private $socket;
		private $host;
		private $port;
		private $isOpened;

		public function __construct(String $host, int $port){

			$this->socket   = socket_create(AF_INET, SOCK_STREAM, 0);
			$this->isOpened = socket_connect($this->socket,$host,$port);
			$this->host     = $host;
			$this->port     = $port;

			socket_set_block($this->socket);

		}

		public function send(array $data) : bool{

			if( !$this->isOpened ) return false;

			$toSend = json_encode($data);
			$size   = strlen($toSend);

			socket_write($this->socket,pack('N',$size));
			$success = socket_write($this->socket,$toSend);

			return $success == $size;
		}

		public function receive() : array{
			$size = 0;
			while($size == 0){
				$size = unpack("N",socket_read($this->socket,4))[1];
			}
			$read = 0;
			$data = "";
			$tmp  = "";

			while($read != $size){

				$remaining = ($size - $read);
				$read     += socket_recv($this->socket,$tmp,$remaining,MSG_DONTWAIT);
				$data     .= $tmp;

			}

			return json_decode($data,true);
		}

		public function close(){
			socket_shutdown($this->socket);
			socket_close($this->socket);
		}

	}