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<?php
/**
* Copyright 2017 Facebook, Inc.
*
* You are hereby granted a non-exclusive, worldwide, royalty-free license to
* use, copy, modify, and distribute this software in source code or binary
* form for use in connection with the web services and APIs provided by
* Facebook.
*
* As with any software that integrates with the Facebook platform, your use
* of this software is subject to the Facebook Developer Principles and
* Policies [http://developers.facebook.com/policy/]. This copyright notice
* shall be included in all copies or substantial portions of the software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
namespace Facebook\FileUpload;
use Facebook\Authentication\AccessToken;
use Facebook\Exceptions\FacebookResponseException;
use Facebook\Exceptions\FacebookResumableUploadException;
use Facebook\Exceptions\FacebookSDKException;
use Facebook\FacebookApp;
use Facebook\FacebookClient;
use Facebook\FacebookRequest;
/**
* Class FacebookResumableUploader
*
* @package Facebook
*/
class FacebookResumableUploader
{
/**
* @var FacebookApp
*/
protected $app;
/**
* @var string
*/
protected $accessToken;
/**
* @var FacebookClient The Facebook client service.
*/
protected $client;
/**
* @var string Graph version to use for this request.
*/
protected $graphVersion;
/**
* @param FacebookApp $app
* @param FacebookClient $client
* @param AccessToken|string|null $accessToken
* @param string $graphVersion
*/
public function __construct(FacebookApp $app, FacebookClient $client, $accessToken, $graphVersion)
{
$this->app = $app;
$this->client = $client;
$this->accessToken = $accessToken;
$this->graphVersion = $graphVersion;
}
/**
* Upload by chunks - start phase
*
* @param string $endpoint
* @param FacebookFile $file
*
* @return FacebookTransferChunk
*
* @throws FacebookSDKException
*/
public function start($endpoint, FacebookFile $file)
{
$params = [
'upload_phase' => 'start',
'file_size' => $file->getSize(),
];
$response = $this->sendUploadRequest($endpoint, $params);
return new FacebookTransferChunk($file, $response['upload_session_id'], $response['video_id'], $response['start_offset'], $response['end_offset']);
}
/**
* Upload by chunks - transfer phase
*
* @param string $endpoint
* @param FacebookTransferChunk $chunk
* @param boolean $allowToThrow
*
* @return FacebookTransferChunk
*
* @throws FacebookResponseException
*/
public function transfer($endpoint, FacebookTransferChunk $chunk, $allowToThrow = false)
{
$params = [
'upload_phase' => 'transfer',
'upload_session_id' => $chunk->getUploadSessionId(),
'start_offset' => $chunk->getStartOffset(),
'video_file_chunk' => $chunk->getPartialFile(),
];
try {
$response = $this->sendUploadRequest($endpoint, $params);
} catch (FacebookResponseException $e) {
$preException = $e->getPrevious();
if ($allowToThrow || !$preException instanceof FacebookResumableUploadException) {
throw $e;
}
if (null !== $preException->getStartOffset() && null !== $preException->getEndOffset()) {
return new FacebookTransferChunk(
$chunk->getFile(),
$chunk->getUploadSessionId(),
$chunk->getVideoId(),
$preException->getStartOffset(),
$preException->getEndOffset()
);
}
// Return the same chunk entity so it can be retried.
return $chunk;
}
return new FacebookTransferChunk($chunk->getFile(), $chunk->getUploadSessionId(), $chunk->getVideoId(), $response['start_offset'], $response['end_offset']);
}
/**
* Upload by chunks - finish phase
*
* @param string $endpoint
* @param string $uploadSessionId
* @param array $metadata The metadata associated with the file.
*
* @return boolean
*
* @throws FacebookSDKException
*/
public function finish($endpoint, $uploadSessionId, $metadata = [])
{
$params = array_merge($metadata, [
'upload_phase' => 'finish',
'upload_session_id' => $uploadSessionId,
]);
$response = $this->sendUploadRequest($endpoint, $params);
return $response['success'];
}
/**
* Helper to make a FacebookRequest and send it.
*
* @param string $endpoint The endpoint to POST to.
* @param array $params The params to send with the request.
*
* @return array
*/
private function sendUploadRequest($endpoint, $params = [])
{
$request = new FacebookRequest($this->app, $this->accessToken, 'POST', $endpoint, $params, null, $this->graphVersion);
return $this->client->sendRequest($request)->getDecodedBody();
}
}
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