woothemes/woocommerce

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

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

/**
 * WC Order Item Tax Data Store
 *
 * @version  3.0.0
 */
class WC_Order_Item_Tax_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( 'rate_id', 'label', 'compound', 'tax_amount', 'shipping_tax_amount', 'rate_percent' );

    /**
     * Read/populate data properties specific to this order item.
     *
     * @since 3.0.0
     * @param WC_Order_Item_Tax $item Tax order item object.
     * @throws Exception If invalid order item.
     */
    public function read( &$item ) {
        parent::read( $item );
        $id = $item->get_id();
        $item->set_props(
            array(
                'rate_id'            => get_metadata( 'order_item', $id, 'rate_id', true ),
                'label'              => get_metadata( 'order_item', $id, 'label', true ),
                'compound'           => get_metadata( 'order_item', $id, 'compound', true ),
                'tax_total'          => get_metadata( 'order_item', $id, 'tax_amount', true ),
                'shipping_tax_total' => get_metadata( 'order_item', $id, 'shipping_tax_amount', true ),
                'rate_percent'       => get_metadata( 'order_item', $id, 'rate_percent', true ),
            )
        );
        $item->set_object_read( true );
    }

    /**
     * Saves an item's data to the database / item meta.
     * Ran after both create and update, so $id will be set.
     *
     * @since 3.0.0
     * @param WC_Order_Item_Tax $item Tax order item object.
     */
    public function save_item_data( &$item ) {
        $id                = $item->get_id();
        $changes           = $item->get_changes();
        $meta_key_to_props = array(
            'rate_id'             => 'rate_id',
            'label'               => 'label',
            'compound'            => 'compound',
            'tax_amount'          => 'tax_total',
            'shipping_tax_amount' => 'shipping_tax_total',
            'rate_percent'        => 'rate_percent',
        );
        $props_to_update   = $this->get_props_to_update( $item, $meta_key_to_props, 'order_item' );

        foreach ( $props_to_update as $meta_key => $prop ) {
            update_metadata( 'order_item', $id, $meta_key, $item->{"get_$prop"}( 'edit' ) );
        }
    }
}