bp_media_activity_update_media_privacy( BP_Activity_Activity $activity )

function bp_media_activity_update_media_privacy( $activity ) {
	$media_ids = bp_activity_get_meta( $activity->id, 'bp_media_ids', true );

	if ( ! empty( $media_ids ) ) {
		$media_ids = explode( ',', $media_ids );

		foreach ( $media_ids as $media_id ) {
			$media = new BP_Media( $media_id );
			// Do not update the privacy if the media is added to forum.
			if ( ! in_array( $media->privacy, array( 'forums', 'message', 'media', 'document', 'grouponly') ) ) {
				$media->privacy = $activity->privacy;
				$media->save();
			}

		}
	}
}