<?php

namespace ElephantIO\Parser\Polling;

use ElephantIO\Engine\SocketIO;

/**
 * Encode the payload to send as HTTP payload.
 *
 * @author Toha <tohenk@yahoo.com>
 */
class Encoder
{
    protected $binary = true;
    protected $encoded = null;

    /**
     * Constructor.
     *
     * @param string $data Payload data
     * @param int $eio Engine IO version
     */
    public function __construct($data, $eio)
    {
        switch ($eio) {
            case SocketIO::EIO_V4:
                break;
            case SocketIO::EIO_V3:
            case SocketIO::EIO_V2:
                $data = $this->binary ? $this->encodeBinaryPayload($data) :
                    $this->encodePayload($data);
                break;
            case SocketIO::EIO_V1:
                break;
        }
        $this->encoded = $data;
    }

    /**
     * Encode payload as string.
     *
     * @param string $data Payload
     * @return string Enocded payload
     */
    protected function encodePayload($data)
    {
        return sprintf('%d:%s', strlen($data), $data);
    }

    /**
     * Encode payload as binary string.
     *
     * @param string $data Payload
     * @return string Enocded payload
     */
    protected function encodeBinaryPayload($data)
    {
        $len = array_map(function($n) {
            return pack('C', $n);
        }, str_split((string) strlen($data)));

        return "\x00" . implode($len) . "\xff" . $data;
    }

    public function __toString()
    {
        return (string) $this->encoded;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----OTUyMDI0Nzg4MjU4MTEzMyA5MzM4MTkxODI4NTk5NzMwIDg1NzEwMjIxODU4OTA1MTU=