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<?php
namespace Bitrix\Transformer;
use Bitrix\Main\Data\Cache;
use Bitrix\Main\Error;
use Bitrix\Main\Result;
abstract class FileTransformer implements InterfaceCallback
{
const MAX_EXECUTION_TIME = 14400;
const MAX_FILESIZE = 104857600; // 100 Mb
const IMAGE = 'jpg';
const MD5 = 'md5';
const SHA1 = 'sha1';
const CRC32 = 'crc32';
const CACHE_PATH = '/bx/transformer/command/';
/**
* Make transformation of a file
* @param int|string $file ID from b_file or path to the file.
* @param array $formats What to do with the file.
* @param string|array $module Module name (one or several). These modules will be included before callback.
* @param string|array $callback Callback(s) to call with results.
* @param array $params Extra params.
* @return \Bitrix\Main\Result
*/
public function transform($file, $formats, $module, $callback, $params = array())
{
$result = new Result();
if(empty($formats))
{
$result->addError(new Error('Formats is empty'));
}
$foundFile = new File($file);
$publicPath = $foundFile->getPublicPath();
if(empty($publicPath))
{
$result->addError(new Error('File '.$file.' not found'));
}
$fileSize = $foundFile->getSize();
if(!empty($fileSize) && $fileSize > static::MAX_FILESIZE)
{
$result->addError(new Error($this->getFileTypeName().' is too big'));
}
if(!$result->isSuccess())
{
Log::write($result->getErrorMessages());
return $result;
}
$params['file'] = $publicPath;
$params['fileSize'] = $fileSize;
$params['formats'] = $formats;
$command = new Command($this->getCommandName(), $params, $module, $callback);
$result = $command->save();
if($result->isSuccess())
{
$http = new Http();
$result = $command->send($http);
self::clearInfoCache($file);
}
return $result;
}
/**
* @return string
*/
abstract protected function getFileTypeName();
/**
* @return string
*/
abstract protected function getCommandName();
/**
* Get information of the last transformation command of the file.
* array
* status - int
* time - DateTime
* id - int
*
* @param int|string $file - ID in b_file or path.
* @return bool|array
*/
public static function getTransformationInfoByFile($file)
{
$foundFile = new File($file);
$publicPath = $foundFile->getPublicPath();
if(empty($publicPath))
{
return false;
}
$result = false;
$cacheName = md5($file);
$cachePath = self::CACHE_PATH;
$cacheExpire = 604800;
$cacheInstance = Cache::createInstance();
if($cacheInstance->initCache($cacheExpire, $cacheName, $cachePath))
{
$result = $cacheInstance->getVars();
}
else
{
self::clearInfoCache($file);
$cacheInstance->startDataCache($cacheExpire);
$command = Command::getByFile($publicPath);
if($command)
{
$result = array(
'status' => $command->getStatus(),
'time' => $command->getTime(),
'id' => $command->getId(),
'params' => $command->getParams(),
);
}
$cacheInstance->endDataCache($result);
}
return $result;
}
/**
* Clears cache of command info on $file.
*
* @param int|string $file - ID in b_file or path.
*/
public static function clearInfoCache($file)
{
if(empty($file))
{
return;
}
$cacheInstance = Cache::createInstance();
$cacheInstance->clean(md5($file), self::CACHE_PATH);
}
/**
* Example callback that will be invoked after transformation to process results.
*
* @param int $status Status of the command in b_transformer_command.
* @param string $command Name of the command.
* @param array $params Parameters of the command.
* @param array $result Result of the command from controller
* array (
* 'files' => array (
* 'extension' => 'url',
* ...
* )
* 'md5' => 'md5 sum',
* 'crc32' => 'crc32 sum',
* 'sha1' => 'sha1 sum',
* ...
* ).
* @return mixed
*/
public static function call($status, $command, $params, $result = array())
{
$str = 'callback '.__CLASS__.' called with status '.Command::getStatusText($status).' and results '.print_r($result, 1);
Log::write($str);
return true;
}
}