Sibyx/phpGPX

<?php
/**
 * Created            16/02/2017 22:20
 * @author            Jakub Dubec <jakub.dubec@gmail.com>
 */

namespace phpGPX\Models;

use phpGPX\Helpers\SerializationHelper;

/**
 * Class Copyright
 * Information about the copyright holder and any license governing use of this file.
 * By linking to an appropriate license, you may place your data into the public domain or grant additional usage rights.
 * @package phpGPX\Models
 */
class Copyright implements Summarizable
{

    /**
     * Copyright holder (TopoSoft, Inc.)
     * @var string
     */
    public $author;

    /**
     * Year of copyright.
     * @var string
     */
    public $year;

    /**
     * Link to external file containing license text.
     * @var string
     */
    public $license;

    /**
     * Copyright constructor.
     */
    public function __construct()
    {
        $this->author = null;
        $this->year = null;
        $this->license = null;
    }


    /**
     * Serialize object to array
     * @return array
     */
    public function toArray()
    {
        return [
            'author' => $this->author,
            'year' => SerializationHelper::stringOrNull($this->year),
            'license' => SerializationHelper::stringOrNull($this->license)
        ];
    }
}