<?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:----NzMyNzgzMzgzMTkzNTM5NSA0OTYzNzExODc5MjYzNTcyIDEzNzEwODk5MjIzNzk5NDY=