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<?php

/**
 * We won't have any videos less than sixty pixels wide. That would be silly.
 */
defined( 'VIDEOPRESS_MIN_WIDTH' ) or define( 'VIDEOPRESS_MIN_WIDTH', 60 );

/**
 * Validate user-supplied guid values against expected inputs
 *
 * @since 1.1
 * @param string $guid video identifier
 * @return bool true if passes validation test
 */
function videopress_is_valid_guid( $guid ) {
	if ( ! empty( $guid ) && is_string( $guid ) && strlen( $guid ) === 8 && ctype_alnum( $guid ) ) {
		return true;
	}
	return false;
}

/**
 * Get details about a specific video by GUID:
 *
 * @param $guid string
 * @return object
 */
function videopress_get_video_details( $guid ) {
	if ( ! videopress_is_valid_guid( $guid ) ) {
		return new WP_Error( 'bad-guid-format', __( 'Invalid Video GUID!', 'jetpack' ) );
	}

$version  = '1.1';
	$endpoint = sprintf( '/videos/%1$s', $guid );
	$query_url = sprintf(
		'https://public-api.wordpress.com/rest/v%1$s%2$s',
		$version,
		$endpoint
	);

// Look for data in our transient. If nothing, let's make a new query.
	$data_from_cache = get_transient( 'jetpack_videopress_' . $guid );
	if ( false === $data_from_cache ) {
		$response = wp_remote_get( esc_url_raw( $query_url ) );
		$data     = json_decode( wp_remote_retrieve_body( $response ) );

// Cache the response for an hour.
		set_transient( 'jetpack_videopress_' . $guid, $data, HOUR_IN_SECONDS );
	} else {
		$data = $data_from_cache;
	}

/**
	 * Allow functions to modify fetched video details.
	 *
	 * This filter allows third-party code to modify the return data
	 * about a given video.  It may involve swapping some data out or
	 * adding new parameters.
	 *
	 * @since 4.0.0
	 *
	 * @param object $data The data returned by the WPCOM API. See: https://developer.wordpress.com/docs/api/1.1/get/videos/%24guid/
	 * @param string $guid The GUID of the VideoPress video in question.
	 */
	return apply_filters( 'videopress_get_video_details', $data, $guid );
}

/**
 * Get an attachment ID given a URL.
 *
 * Modified from http://wpscholar.com/blog/get-attachment-id-from-wp-image-url/
 *
 * @todo: Add some caching in here.
 *
 * @param string $url
 *
 * @return int|bool Attachment ID on success, false on failure
 */
function videopress_get_attachment_id_by_url( $url ) {
	$wp_upload_dir = wp_upload_dir();
	// Strip out protocols, so it doesn't fail because searching for http: in https: dir.
	$dir = set_url_scheme( trailingslashit( $wp_upload_dir['baseurl'] ), 'relative' );

// Is URL in uploads directory?
	if ( false !== strpos( $url, $dir ) ) {

$file = basename( $url );

$query_args = array(
			'post_type'   => 'attachment',
			'post_status' => 'inherit',
			'fields'      => 'ids',
			'meta_query'  => array(
				array(
					'key'     => '_wp_attachment_metadata',
					'compare' => 'LIKE',
					'value'   => $file,
				),
			)
		);

$query = new WP_Query( $query_args );

if ( $query->have_posts() ) {
			foreach ( $query->posts as $attachment_id ) {
				$meta          = wp_get_attachment_metadata( $attachment_id );
				$original_file = basename( $meta['file'] );
				$cropped_files = wp_list_pluck( $meta['sizes'], 'file' );

if ( $original_file === $file || in_array( $file, $cropped_files ) ) {
					return (int) $attachment_id;
				}
			}
		}

}

return false;
}

/**
 * Similar to `media_sideload_image` -- but returns an ID.
 *
 * @param $url
 * @param $attachment_id
 *
 * @return int|mixed|object|WP_Error
 */
function videopress_download_poster_image( $url, $attachment_id ) {
	// Set variables for storage, fix file filename for query strings.
	preg_match( '/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $url, $matches );
	if ( ! $matches ) {
		return new WP_Error( 'image_sideload_failed', __( 'Invalid image URL', 'jetpack' ) );
	}

$file_array = array();
	$file_array['name']     = basename( $matches[0] );
	$file_array['tmp_name'] = download_url( $url );

// If error storing temporarily, return the error.
	if ( is_wp_error( $file_array['tmp_name'] ) ) {
		return $file_array['tmp_name'];
	}

// Do the validation and storage stuff.
	$thumbnail_id = media_handle_sideload( $file_array, $attachment_id, null );

// Flag it as poster image, so we can exclude it from display.
	update_post_meta( $thumbnail_id, 'videopress_poster_image', 1 );

return $thumbnail_id;
}

/**
 * Creates a local media library item of a remote VideoPress video.
 *
 * @param $guid
 * @param int $parent_id
 *
 * @return int|object
 */
function create_local_media_library_for_videopress_guid( $guid, $parent_id = 0 ) {
	$vp_data = videopress_get_video_details( $guid );
	if ( ! $vp_data || is_wp_error( $vp_data ) ) {
		return $vp_data;
	}

$args = array(
		'post_date'      => $vp_data->upload_date,
		'post_title'     => wp_kses( $vp_data->title, array() ),
		'post_content'   => wp_kses( $vp_data->description, array() ),
		'post_mime_type' => 'video/videopress',
		'guid'           => sprintf( 'https://videopress.com/v/%s', $guid ),
	);

$attachment_id = wp_insert_attachment( $args, null, $parent_id );

if ( ! is_wp_error( $attachment_id ) ) {
		update_post_meta( $attachment_id, 'videopress_guid', $guid );
		wp_update_attachment_metadata( $attachment_id, array(
			'width'  => $vp_data->width,
			'height' => $vp_data->height,
		) );

$thumbnail_id = videopress_download_poster_image( $vp_data->poster, $attachment_id );
		update_post_meta( $attachment_id, '_thumbnail_id', $thumbnail_id );
	}

return $attachment_id;
}

/**
 * Helper that will look for VideoPress media items that are more than 30 minutes old,
 * that have not had anything attached to them by a wpcom upload and deletes the ghost
 * attachment.
 *
 * These happen primarily because of failed upload attempts.
 *
 * @return int The number of items that were cleaned up.
 */
function videopress_cleanup_media_library() {

// Disable this job for now.
	return 0;
	$query_args = array(
		'post_type'      => 'attachment',
		'post_status'    => 'inherit',
		'post_mime_type' => 'video/videopress',
		'meta_query'     => array(
			array(
				'key'   => 'videopress_status',
				'value' => 'new',
			),
		)
	);

$query = new WP_Query( $query_args );

$cleaned = 0;

$now = current_time( 'timestamp' );

if ( $query->have_posts() ) {
		foreach ( $query->posts as $post ) {
			$post_time = strtotime( $post->post_date_gmt );

// If the post is older than 30 minutes, it is safe to delete it.
			if ( $now - $post_time > MINUTE_IN_SECONDS * 30 ) {
				// Force delete the attachment, because we don't want it appearing in the trash.
				wp_delete_attachment( $post->ID, true );

$cleaned++;
			}
		}
	}

return $cleaned;
}

/**
 * Return an absolute URI for a given filename and guid on the CDN.
 * No check is performed to ensure the guid exists or the file is present. Simple centralized string builder.
 *
 * @param string $guid     VideoPress identifier
 * @param string $filename name of file associated with the guid (video file name or thumbnail file name)
 *
 * @return string Absolute URL of VideoPress file for the given guid.
 */
function videopress_cdn_file_url( $guid, $filename ) {
	return "https://videos.files.wordpress.com/{$guid}/{$filename}";
}

/**
 * Get an array of the transcoding status for the given video post.
 *
 * @since 4.4
 * @param int $post_id
 * @return array|bool Returns an array of statuses if this is a VideoPress post, otherwise it returns false.
 */
function videopress_get_transcoding_status( $post_id ) {
	$meta = wp_get_attachment_metadata( $post_id );

// If this has not been processed by videopress, we can skip the rest.
	if ( ! $meta || ! isset( $meta['file_statuses'] ) ) {
		return false;
	}

$info = (object) $meta['file_statuses'];

$status = array(
		'std_mp4' => isset( $info->mp4 ) ? $info->mp4 : null,
		'std_ogg' => isset( $info->ogg ) ? $info->ogg : null,
		'dvd_mp4' => isset( $info->dvd ) ? $info->dvd : null,
		'hd_mp4'  => isset( $info->hd )  ? $info->hd : null,
	);

return $status;
}

/**
 * Get the direct url to the video.
 *
 * @since 4.4
 * @param string $guid
 * @return string
 */
function videopress_build_url( $guid ) {

// No guid, no videopress url.
	if ( ! $guid ) {
		return '';
	}

return 'https://videopress.com/v/' . $guid;
}

/**
 * Create an empty videopress media item that will be filled out later by an xmlrpc
 * callback from the VideoPress servers.
 *
 * @since 4.4
 * @param string $title
 * @return int|WP_Error
 */
function videopress_create_new_media_item( $title, $guid = null ) {
	$post = array(
		'post_type'      => 'attachment',
		'post_mime_type' => 'video/videopress',
		'post_title'     => $title,
		'post_content'   => '',
		'guid'           => videopress_build_url( $guid ),
	);

$media_id = wp_insert_post( $post );

add_post_meta( $media_id, 'videopress_status', 'initiated' );

add_post_meta( $media_id, 'videopress_guid', $guid );

return $media_id;
}

/**
 * @param array $current_status
 * @param array $new_meta
 * @return array
 */
function videopress_merge_file_status( $current_status, $new_meta ) {
	$new_statuses = array();

if ( isset( $new_meta['videopress']['files_status']['hd'] ) ) {
		$new_statuses['hd'] = $new_meta['videopress']['files_status']['hd'];
	}

if ( isset( $new_meta['videopress']['files_status']['dvd'] ) ) {
		$new_statuses['dvd'] = $new_meta['videopress']['files_status']['dvd'];
	}

if ( isset( $new_meta['videopress']['files_status']['std']['mp4'] ) ) {
		$new_statuses['mp4'] = $new_meta['videopress']['files_status']['std']['mp4'];
	}

if ( isset( $new_meta['videopress']['files_status']['std']['ogg'] ) ) {
		$new_statuses['ogg'] = $new_meta['videopress']['files_status']['std']['ogg'];
	}

foreach ( $new_statuses as $format => $status ) {
		if ( ! isset( $current_status[ $format ] ) ) {
			$current_status[ $format ] = $status;
			continue;
		}

if ( $current_status[ $format ] !== 'DONE' ) {
			$current_status[ $format ] = $status;
		}
	}

return $current_status;
}

/**
 * Check to see if a video has completed processing.
 *
 * @since 4.4
 * @param int $post_id
 * @return bool
 */
function videopress_is_finished_processing( $post_id ) {
	$post = get_post( $post_id );

if ( is_wp_error( $post ) ) {
		return false;
	}

$meta = wp_get_attachment_metadata( $post->ID );

if ( ! isset( $meta['file_statuses'] ) || ! is_array( $meta['file_statuses'] ) ) {
		return false;
	}

$check_statuses = array( 'hd', 'dvd', 'mp4', 'ogg' );

foreach ( $check_statuses as $status ) {
		if ( ! isset( $meta['file_statuses'][ $status ] ) || $meta['file_statuses'][ $status ] != 'DONE' ) {
			return false;
		}
	}

return true;
}

/**
 * Update the meta information  status for the given video post.
 *
 * @since 4.4
 * @param int $post_id
 * @return bool
 */
function videopress_update_meta_data( $post_id ) {

$meta = wp_get_attachment_metadata( $post_id );

// If this has not been processed by VideoPress, we can skip the rest.
	if ( ! $meta || ! isset( $meta['videopress'] ) ) {
		return false;
	}

$info = (object) $meta['videopress'];

$args = array(
		// 'sslverify' => false,
	);

$result = wp_remote_get( videopress_make_video_get_path( $info->guid ), $args );

if ( is_wp_error( $result ) ) {
		return false;
	}

$response = json_decode( $result['body'], true );

// Update the attachment metadata.
	$meta['videopress'] = $response;

wp_update_attachment_metadata( $post_id, $meta );

return true;
}

/**
 * Check to see if this is a VideoPress post that hasn't had a guid set yet.
 *
 * @param int $post_id
 * @return bool
 */
function videopress_is_attachment_without_guid( $post_id ) {
	$post = get_post( $post_id );

if ( is_wp_error( $post ) ) {
		return false;
	}

if ( $post->post_mime_type !== 'video/videopress' ) {
		return false;
	}

$videopress_guid = get_post_meta( $post_id, 'videopress_guid', true );

if ( $videopress_guid ) {
		return false;
	}

return true;
}

/**
 * Check to see if this is a VideoPress attachment.
 *
 * @param int $post_id
 * @return bool
 */
function is_videopress_attachment( $post_id ) {
	$post = get_post( $post_id );

if ( is_wp_error( $post ) ) {
		return false;
	}

if ( $post->post_mime_type !== 'video/videopress' ) {
		return false;
	}

return true;
}

/**
 * Get the video update path
 *
 * @since 4.4
 * @param string $guid
 * @return string
 */
function videopress_make_video_get_path( $guid ) {
	return sprintf(
		'%s://%s/rest/v%s/videos/%s',
		'https',
		JETPACK__WPCOM_JSON_API_HOST,
		Jetpack_Client::WPCOM_JSON_API_VERSION,
		$guid
	);
}

/**
 * Get the upload api path.
 *
 * @since 4.4
 * @param int $blog_id The id of the blog we're uploading to.
 * @return string
 */
function videopress_make_media_upload_path( $blog_id ) {
	return sprintf(
		'https://public-api.wordpress.com/rest/v1.1/sites/%s/media/new',
		$blog_id
	);
}

/**
 * This is a mock of the internal VideoPress method, which is meant to duplicate the functionality
 * of the WPCOM API, so that the Jetpack REST API returns the same data with no modifications.
 *
 * @param int $blog_id Blog ID.
 * @param int $post_id Post ID.
 * @return bool|stdClass
 */
function video_get_info_by_blogpostid( $blog_id, $post_id ) {
	$post = get_post( $post_id );

$video_info = new stdClass();
	$video_info->post_id = $post_id;
	$video_info->blog_id = $blog_id;
	$video_info->guid = null;
	$video_info->finish_date_gmt = '0000-00-00 00:00:00';

if ( is_wp_error( $post ) ) {
		return $video_info;
	}

if ( 'video/videopress' !== $post->post_mime_type ) {
		return $video_info;
	}

// Since this is a VideoPress post, lt's fill out the rest of the object.
	$video_info->guid = get_post_meta( $post_id, 'videopress_guid', true );

if ( videopress_is_finished_processing( $post_id ) ) {
		$video_info->finish_date_gmt = date( 'Y-m-d H:i:s' );
	}

return $video_info;
}

/**
 * Check that a VideoPress video format has finished processing.
 *
 * This uses the info object, because that is what the WPCOM endpoint
 * uses, however we don't have a complete info object in the same way
 * WPCOM does, so we pull the meta information out of the post
 * options instead.
 *
 * Note: This mimics the WPCOM function of the same name and helps the media
 * API endpoint add all needed VideoPress data.
 *
 * @param stdClass $info
 * @param string $format
 * @return bool
 */
function video_format_done( $info, $format ) {

// Avoids notice when a non-videopress item is found.
	if ( ! is_object( $info ) ) {
		return false;
	}

$post_id = $info->post_id;

if ( get_post_mime_type( $post_id ) !== 'video/videopress' ) {
		return false;
	}

$post = get_post( $post_id );

if ( is_wp_error( $post ) ) {
		return false;
	}

$meta = wp_get_attachment_metadata( $post->ID );

switch ( $format ) {
		case 'fmt_hd':
			return isset( $meta['videopress']['files']['hd']['mp4'] );
			break;

case 'fmt_dvd':
			return isset( $meta['videopress']['files']['dvd']['mp4'] );
			break;

case 'fmt_std':
			return isset( $meta['videopress']['files']['std']['mp4'] );
			break;

case 'fmt_ogg':
			return isset( $meta['videopress']['files']['std']['ogg'] );
			break;
	}

return false;
}

/**
 * Get the image URL for the given VideoPress GUID
 *
 * We look up by GUID, because that is what WPCOM does and this needs to be
 * parameter compatible with that.
 *
 * Note: This mimics the WPCOM function of the same name and helps the media
 * API endpoint add all needed VideoPress data.
 *
 * @param string $guid
 * @param string $format
 * @return string
 */
function video_image_url_by_guid( $guid, $format ) {

$post = video_get_post_by_guid( $guid );

if ( is_wp_error( $post ) ) {
		return null;
	}

$meta = wp_get_attachment_metadata( $post->ID );

// We add ssl => 1 to make sure that the videos.files.wordpress.com domain is parsed as photon.
	$poster = apply_filters( 'jetpack_photon_url', $meta['videopress']['poster'], array( 'ssl' => 1 ), 'https' );

return $poster;
}

/**
 * Using a GUID, find a post.
 *
 * @param string $guid
 * @return WP_Post
 */
function video_get_post_by_guid( $guid ) {
	$args = array(
		'post_type' 	 => 'attachment',
		'post_mime_type' => 'video/videopress',
		'post_status' 	 => 'inherit',
		'meta_query' 	 => array(
			array(
				'key' 	  => 'videopress_guid',
				'value'   => $guid,
				'compare' => '=',
			)
		)
	);

$query = new WP_Query( $args );

$post = $query->next_post();

return $post;
}

/**
 * From the given VideoPress post_id, return back the appropriate attachment URL.
 *
 * When the MP4 hasn't been processed yet or this is not a VideoPress video, this will return null.
 *
 * @param int $post_id
 * @return string|null
 */
function videopress_get_attachment_url( $post_id ) {

// We only handle VideoPress attachments.
	if ( get_post_mime_type( $post_id ) !== 'video/videopress' ) {
		return null;
	}

$meta = wp_get_attachment_metadata( $post_id );

if ( ! isset( $meta['videopress']['files']['hd']['mp4'] ) ) {
		// Use the original file as the url if it isn't transcoded yet.
		if ( isset( $meta['original'] ) ) {
			return $meta['original'];
		}

// Otherwise, there isn't much we can do.
		return null;
	}

return $meta['videopress']['file_url_base']['https'] . $meta['videopress']['files']['hd']['mp4'];
}

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