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<?php
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/**
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 * Copyright 2017 Facebook, Inc.
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 *
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 * You are hereby granted a non-exclusive, worldwide, royalty-free license to
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 * use, copy, modify, and distribute this software in source code or binary
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 * form for use in connection with the web services and APIs provided by
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 * Facebook.
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 *
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 * As with any software that integrates with the Facebook platform, your use
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 * of this software is subject to the Facebook Developer Principles and
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 * Policies [http://developers.facebook.com/policy/]. This copyright notice
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 * shall be included in all copies or substantial portions of the software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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 * DEALINGS IN THE SOFTWARE.
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 *
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 */
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namespace Facebook\FileUpload;
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/**
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 * Class FacebookTransferChunk
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 *
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 * @package Facebook
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 */
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class FacebookTransferChunk
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{
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    /**
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     * @var FacebookFile The file to chunk during upload.
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     */
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    private $file;
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    /**
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     * @var int The ID of the upload session.
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     */
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    private $uploadSessionId;
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    /**
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     * @var int Start byte position of the next file chunk.
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     */
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    private $startOffset;
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    /**
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     * @var int End byte position of the next file chunk.
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     */
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    private $endOffset;
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    /**
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     * @var int The ID of the video.
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     */
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    private $videoId;
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    /**
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     * @param FacebookFile $file
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     * @param int $uploadSessionId
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     * @param int $videoId
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     * @param int $startOffset
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     * @param int $endOffset
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     */
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    public function __construct(FacebookFile $file, $uploadSessionId, $videoId, $startOffset, $endOffset)
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    {
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        $this->file = $file;
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        $this->uploadSessionId = $uploadSessionId;
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        $this->videoId = $videoId;
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        $this->startOffset = $startOffset;
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        $this->endOffset = $endOffset;
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    }
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    /**
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     * Return the file entity.
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     *
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     * @return FacebookFile
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     */
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    public function getFile()
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    {
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        return $this->file;
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    }
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    /**
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     * Return a FacebookFile entity with partial content.
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     *
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     * @return FacebookFile
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     */
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    public function getPartialFile()
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    {
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        $maxLength = $this->endOffset - $this->startOffset;
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        return new FacebookFile($this->file->getFilePath(), $maxLength, $this->startOffset);
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    }
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    /**
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     * Return upload session Id
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     *
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     * @return int
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     */
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    public function getUploadSessionId()
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    {
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        return $this->uploadSessionId;
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    }
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    /**
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     * Check whether is the last chunk
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     *
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     * @return bool
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     */
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    public function isLastChunk()
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    {
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        return $this->startOffset === $this->endOffset;
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    }
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    /**
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     * @return int
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     */
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    public function getStartOffset()
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    {
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        return $this->startOffset;
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    }
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    /**
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     * Get uploaded video Id
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     *
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     * @return int
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     */
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    public function getVideoId()
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    {
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        return $this->videoId;
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    }
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}