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<?php
/**
* Dropbox Files Downloader
*
* @package Inpsyde\BackWPup
*/
/**
* Class BackWPup_Destination_Dropbox_Downloader
*
* @since 3.5.0
* @package Inpsyde\BackWPup
*/
final class BackWPup_Destination_Dropbox_Downloader implements BackWPup_Destination_Downloader_Interface {
const OPTION_ROOT = 'dropboxroot';
const OPTION_TOKEN = 'dropboxtoken';
/**
* @var \BackWpUp_Destination_Downloader_Data
*/
private $data;
/**
* @var resource
*/
private $local_file_handler;
/**
* @var BackWPup_Destination_Dropbox_API
*/
private $dropbox_api;
/**
* BackWPup_Destination_Dropbox_Downloader constructor
*
* @param \BackWpUp_Destination_Downloader_Data $data
*
* @throws \BackWPup_Destination_Dropbox_API_Exception
*/
public function __construct( BackWpUp_Destination_Downloader_Data $data ) {
$this->data = $data;
$this->dropbox_api();
}
/**
* Clean up things
*/
public function __destruct() {
fclose( $this->local_file_handler );
}
/**
* @inheritdoc
*/
public function download_chunk( $start_byte, $end_byte ) {
$this->local_file_handler( $start_byte );
try {
$data = $this->dropbox_api->download(
array( 'path' => $this->data->source_file_path() ),
$start_byte,
$end_byte
);
$bytes = (int) fwrite( $this->local_file_handler, $data );
if ( $bytes === 0 ) {
throw new \RuntimeException( __( 'Could not write data to file.', 'backwpup' ) );
}
} catch ( \Exception $e ) {
BackWPup_Admin::message( 'Dropbox: ' . $e->getMessage() );
}
}
/**
* @inheritdoc
*/
public function calculate_size() {
$metadata = $this->dropbox_api->filesGetMetadata( array( 'path' => $this->data->source_file_path() ) );
return $metadata['size'];
}
/**
* Set local file hanlder
*
* @param int $start_byte
*/
private function local_file_handler( $start_byte ) {
if ( is_resource( $this->local_file_handler ) ) {
return;
}
// Open file; write mode if $start_byte is 0, else append
$this->local_file_handler = fopen( $this->data->local_file_path(), $start_byte == 0 ? 'wb' : 'ab' );
if ( ! is_resource( $this->local_file_handler ) ) {
throw new \RuntimeException( __( 'File could not be opened for writing.', 'backwpup' ) );
}
}
/**
* Set the dropbox api instance
*
* @return $this
* @throws \BackWPup_Destination_Dropbox_API_Exception
*/
private function dropbox_api() {
$this->dropbox_api = new \BackWPup_Destination_Dropbox_API(
\BackWPup_Option::get( $this->data->job_id(), self::OPTION_ROOT )
);
$this->dropbox_api->setOAuthTokens( \BackWPup_Option::get( $this->data->job_id(), self::OPTION_TOKEN ) );
}
}