<?php

namespace Parse;

use Parse\Internal\Encodable;

/**

* ParseBytes - Representation of a Byte array for storage on a Parse Object.

*

* @author Fosco Marotto <fjm@fb.com>

*/

class ParseBytes implements Encodable

{

/**

* Byte array.

*

* @var array

*/

private $byteArray;

/**

* Create a ParseBytes object with a given byte array.

*

* @param array $byteArray

*

* @return ParseBytes

*/

public static function createFromByteArray(array $byteArray)

{

$bytes = new self();

$bytes->setByteArray($byteArray);

return $bytes;

}

/**

* Create a ParseBytes object with a given base 64 encoded data string.

*

* @param string $base64Data

*

* @return ParseBytes

*/

public static function createFromBase64Data($base64Data)

{

$bytes = new self();

$bytes->setBase64Data($base64Data);

return $bytes;

}

private function setBase64Data($base64Data)

{

$byteArray = unpack('C*', base64_decode($base64Data));

$this->setByteArray($byteArray);

}

private function setByteArray(array $byteArray)

{

$this->byteArray = $byteArray;

}

/**

* Encode to associative array representation.

*

* @return array

*/

public function _encode()

{

$data = '';

foreach ($this->byteArray as $byte) {

$data .= chr($byte);

}

return [

'__type' => 'Bytes',

'base64' => base64_encode($data),

];

}

}