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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace Magento\Fedex\Model\Source;

/**
 * Fedex generic source implementation
 */
class Generic implements \Magento\Framework\Data\OptionSourceInterface
{
    /**
     * @var \Magento\Fedex\Model\Carrier
     */
    protected $_shippingFedex;

    /**
     * Carrier code
     *
     * @var string
     */
    protected $_code = '';

    /**
     * @param \Magento\Fedex\Model\Carrier $shippingFedex
     */
    public function __construct(\Magento\Fedex\Model\Carrier $shippingFedex)
    {
        $this->_shippingFedex = $shippingFedex;
    }

    /**
     * Returns array to be used in multiselect on back-end
     *
     * @return array
     */
    public function toOptionArray()
    {
        $configData = $this->_shippingFedex->getCode($this->_code);
        $arr = [];
        if ($configData) {
            $arr = array_map(
                function ($code, $title) {
                    return [
                        'value' => $code,
                        'label' => $title
                    ];
                },
                array_keys($configData),
                $configData
            );
        }

        return $arr;
    }
}