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

namespace Magento\Sales\Api;

/**
 * Credit memo add comment interface.
 *
 * After a customer places and pays for an order and an invoice has been issued, the merchant can create a credit memo
 * to refund all or part of the amount paid for any returned or undelivered items. The memo restores funds to the
 * customer account so that the customer can make future purchases.
 * @api
 * @since 100.0.2
 */
interface CreditmemoManagementInterface
{
    /**
     * Cancels a specified credit memo.
     *
     * @param int $id The credit memo ID.
     * @return bool
     * @throws \Magento\Framework\Exception\LocalizedException
     */
    public function cancel($id);

    /**
     * Lists comments for a specified credit memo.
     *
     * @param int $id The credit memo ID.
     * @return \Magento\Sales\Api\Data\CreditmemoCommentSearchResultInterface Credit memo comment search
     * results interface.
     */
    public function getCommentsList($id);

    /**
     * Emails a user a specified credit memo.
     *
     * @param int $id The credit memo ID.
     * @return bool
     */
    public function notify($id);

    /**
     * Prepare creditmemo to refund and save it.
     *
     * @param \Magento\Sales\Api\Data\CreditmemoInterface $creditmemo
     * @param bool $offlineRequested
     * @return \Magento\Sales\Api\Data\CreditmemoInterface
     */
    public function refund(
        \Magento\Sales\Api\Data\CreditmemoInterface $creditmemo,
        $offlineRequested = false
    );
}