woothemes/woocommerce

<?php
/**
 * Class WC_Order_Item_Coupon_Data_Store file.
 *
 * @package WooCommerce\DataStores
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * WC Order Item Coupon Data Store
 *
 * @version  3.0.0
 */
class WC_Order_Item_Coupon_Data_Store extends Abstract_WC_Order_Item_Type_Data_Store implements WC_Object_Data_Store_Interface, WC_Order_Item_Type_Data_Store_Interface {

    /**
     * Data stored in meta keys.
     *
     * @since 3.0.0
     * @var array
     */
    protected $internal_meta_keys = array( 'discount_amount', 'discount_amount_tax' );

    /**
     * Read/populate data properties specific to this order item.
     *
     * @since 3.0.0
     * @param WC_Order_Item_Coupon $item Coupon order item.
     */
    public function read( &$item ) {
        parent::read( $item );
        $id = $item->get_id();
        $item->set_props(
            array(
                'discount'     => get_metadata( 'order_item', $id, 'discount_amount', true ),
                'discount_tax' => get_metadata( 'order_item', $id, 'discount_amount_tax', true ),
            )
        );
        $item->set_object_read( true );
    }

    /**
     * Saves an item's data to the database / item meta.
     * Ran after both create and update, so $item->get_id() will be set.
     *
     * @since 3.0.0
     * @param WC_Order_Item_Coupon $item Coupon order item.
     */
    public function save_item_data( &$item ) {
        $id          = $item->get_id();
        $save_values = array(
            'discount_amount'     => $item->get_discount( 'edit' ),
            'discount_amount_tax' => $item->get_discount_tax( 'edit' ),
        );
        foreach ( $save_values as $key => $value ) {
            update_metadata( 'order_item', $id, $key, $value );
        }
    }
}