woocommerce/woocommerce

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includes/legacy/api/v2/class-wc-api-orders.php

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<?php
/**
 * WooCommerce API Orders Class
 *
 * Handles requests to the /orders endpoint
 *
 * @author      WooThemes
 * @category    API
 * @package     WooCommerce\RestApi
 * @since       2.1
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

class WC_API_Orders extends WC_API_Resource {

    /** @var string $base the route base */
    protected $base = '/orders';

    /** @var string $post_type the custom post type */
    protected $post_type = 'shop_order';

    /**
     * Register the routes for this class
     *
     * GET|POST /orders
     * GET /orders/count
     * GET|PUT|DELETE /orders/<id>
     * GET /orders/<id>/notes
     *
     * @since 2.1
     * @param array $routes
     * @return array
     */
    public function register_routes( $routes ) {

        # GET|POST /orders
        $routes[ $this->base ] = array(
            array( array( $this, 'get_orders' ),     WC_API_Server::READABLE ),
            array( array( $this, 'create_order' ),   WC_API_Server::CREATABLE | WC_API_Server::ACCEPT_DATA ),
        );

        # GET /orders/count
        $routes[ $this->base . '/count' ] = array(
            array( array( $this, 'get_orders_count' ), WC_API_Server::READABLE ),
        );

        # GET /orders/statuses
        $routes[ $this->base . '/statuses' ] = array(
            array( array( $this, 'get_order_statuses' ), WC_API_Server::READABLE ),
        );

        # GET|PUT|DELETE /orders/<id>
        $routes[ $this->base . '/(?P<id>\d+)' ] = array(
            array( array( $this, 'get_order' ),  WC_API_Server::READABLE ),
            array( array( $this, 'edit_order' ), WC_API_Server::EDITABLE | WC_API_Server::ACCEPT_DATA ),
            array( array( $this, 'delete_order' ), WC_API_Server::DELETABLE ),
        );

        # GET|POST /orders/<id>/notes
        $routes[ $this->base . '/(?P<order_id>\d+)/notes' ] = array(
            array( array( $this, 'get_order_notes' ), WC_API_Server::READABLE ),
            array( array( $this, 'create_order_note' ), WC_API_SERVER::CREATABLE | WC_API_Server::ACCEPT_DATA ),
        );

        # GET|PUT|DELETE /orders/<order_id>/notes/<id>
        $routes[ $this->base . '/(?P<order_id>\d+)/notes/(?P<id>\d+)' ] = array(
            array( array( $this, 'get_order_note' ), WC_API_Server::READABLE ),
            array( array( $this, 'edit_order_note' ), WC_API_SERVER::EDITABLE | WC_API_Server::ACCEPT_DATA ),
            array( array( $this, 'delete_order_note' ), WC_API_SERVER::DELETABLE ),
        );

        # GET|POST /orders/<order_id>/refunds
        $routes[ $this->base . '/(?P<order_id>\d+)/refunds' ] = array(
            array( array( $this, 'get_order_refunds' ), WC_API_Server::READABLE ),
            array( array( $this, 'create_order_refund' ), WC_API_SERVER::CREATABLE | WC_API_Server::ACCEPT_DATA ),
        );

        # GET|PUT|DELETE /orders/<order_id>/refunds/<id>
        $routes[ $this->base . '/(?P<order_id>\d+)/refunds/(?P<id>\d+)' ] = array(
            array( array( $this, 'get_order_refund' ), WC_API_Server::READABLE ),
            array( array( $this, 'edit_order_refund' ), WC_API_SERVER::EDITABLE | WC_API_Server::ACCEPT_DATA ),
            array( array( $this, 'delete_order_refund' ), WC_API_SERVER::DELETABLE ),
        );

        # POST|PUT /orders/bulk
        $routes[ $this->base . '/bulk' ] = array(
            array( array( $this, 'bulk' ), WC_API_Server::EDITABLE | WC_API_Server::ACCEPT_DATA ),
        );

        return $routes;
    }

    /**
     * Get all orders
     *
     * @since 2.1
     * @param string $fields
     * @param array $filter
     * @param string $status
     * @param int $page
     * @return array
     */
    public function get_orders( $fields = null, $filter = array(), $status = null, $page = 1 ) {

        if ( ! empty( $status ) ) {
            $filter['status'] = $status;
        }

        $filter['page'] = $page;

        $query = $this->query_orders( $filter );

        $orders = array();

        foreach ( $query->posts as $order_id ) {

            if ( ! $this->is_readable( $order_id ) ) {
                continue;
            }

            $orders[] = current( $this->get_order( $order_id, $fields, $filter ) );
        }

        $this->server->add_pagination_headers( $query );

        return array( 'orders' => $orders );
    }


    /**
     * Get the order for the given ID
     *
     * @since 2.1
     * @param int $id the order ID
     * @param array $fields
     * @param array $filter
     * @return array|WP_Error
     */
    public function get_order( $id, $fields = null, $filter = array() ) {

        // ensure order ID is valid & user has permission to read
        $id = $this->validate_request( $id, $this->post_type, 'read' );

        if ( is_wp_error( $id ) ) {
            return $id;
        }

        // Get the decimal precession
        $dp         = ( isset( $filter['dp'] ) ? intval( $filter['dp'] ) : 2 );
        $order      = wc_get_order( $id );
        $order_data = array(
            'id'                        => $order->get_id(),
            'order_number'              => $order->get_order_number(),
            'created_at'                => $this->server->format_datetime( $order->get_date_created() ? $order->get_date_created()->getTimestamp() : 0, false, false ), // API gives UTC times.
            'updated_at'                => $this->server->format_datetime( $order->get_date_modified() ? $order->get_date_modified()->getTimestamp() : 0, false, false ), // API gives UTC times.
            'completed_at'              => $this->server->format_datetime( $order->get_date_completed() ? $order->get_date_completed()->getTimestamp() : 0, false, false ), // API gives UTC times.
            'status'                    => $order->get_status(),
            'currency'                  => $order->get_currency(),
            'total'                     => wc_format_decimal( $order->get_total(), $dp ),
            'subtotal'                  => wc_format_decimal( $order->get_subtotal(), $dp ),
            'total_line_items_quantity' => $order->get_item_count(),
            'total_tax'                 => wc_format_decimal( $order->get_total_tax(), $dp ),
            'total_shipping'            => wc_format_decimal( $order->get_shipping_total(), $dp ),
            'cart_tax'                  => wc_format_decimal( $order->get_cart_tax(), $dp ),
            'shipping_tax'              => wc_format_decimal( $order->get_shipping_tax(), $dp ),
            'total_discount'            => wc_format_decimal( $order->get_total_discount(), $dp ),
            'shipping_methods'          => $order->get_shipping_method(),
            'payment_details' => array(
                'method_id'    => $order->get_payment_method(),
                'method_title' => $order->get_payment_method_title(),
                'paid'         => ! is_null( $order->get_date_paid() ),
            ),
            'billing_address' => array(
                'first_name' => $order->get_billing_first_name(),
                'last_name'  => $order->get_billing_last_name(),
                'company'    => $order->get_billing_company(),
                'address_1'  => $order->get_billing_address_1(),
                'address_2'  => $order->get_billing_address_2(),
                'city'       => $order->get_billing_city(),
                'state'      => $order->get_billing_state(),
                'postcode'   => $order->get_billing_postcode(),
                'country'    => $order->get_billing_country(),
                'email'      => $order->get_billing_email(),
                'phone'      => $order->get_billing_phone(),
            ),
            'shipping_address' => array(
                'first_name' => $order->get_shipping_first_name(),
                'last_name'  => $order->get_shipping_last_name(),
                'company'    => $order->get_shipping_company(),
                'address_1'  => $order->get_shipping_address_1(),
                'address_2'  => $order->get_shipping_address_2(),
                'city'       => $order->get_shipping_city(),
                'state'      => $order->get_shipping_state(),
                'postcode'   => $order->get_shipping_postcode(),
                'country'    => $order->get_shipping_country(),
            ),
            'note'                      => $order->get_customer_note(),
            'customer_ip'               => $order->get_customer_ip_address(),
            'customer_user_agent'       => $order->get_customer_user_agent(),
            'customer_id'               => $order->get_user_id(),
            'view_order_url'            => $order->get_view_order_url(),
            'line_items'                => array(),
            'shipping_lines'            => array(),
            'tax_lines'                 => array(),
            'fee_lines'                 => array(),
            'coupon_lines'              => array(),
        );

        // add line items
        foreach ( $order->get_items() as $item_id => $item ) {
            $product    = $item->get_product();
            $hideprefix = ( isset( $filter['all_item_meta'] ) && 'true' === $filter['all_item_meta'] ) ? null : '_';
            $item_meta  = $item->get_formatted_meta_data( $hideprefix );

            foreach ( $item_meta as $key => $values ) {
                $item_meta[ $key ]->label = $values->display_key;
                unset( $item_meta[ $key ]->display_key );
                unset( $item_meta[ $key ]->display_value );
            }

            $order_data['line_items'][] = array(
                'id'           => $item_id,
                'subtotal'     => wc_format_decimal( $order->get_line_subtotal( $item, false, false ), $dp ),
                'subtotal_tax' => wc_format_decimal( $item->get_subtotal_tax(), $dp ),
                'total'        => wc_format_decimal( $order->get_line_total( $item, false, false ), $dp ),
                'total_tax'    => wc_format_decimal( $item->get_total_tax(), $dp ),
                'price'        => wc_format_decimal( $order->get_item_total( $item, false, false ), $dp ),
                'quantity'     => $item->get_quantity(),
                'tax_class'    => $item->get_tax_class(),
                'name'         => $item->get_name(),
                'product_id'   => $item->get_variation_id() ? $item->get_variation_id() : $item->get_product_id(),
                'sku'          => is_object( $product ) ? $product->get_sku() : null,
                'meta'         => array_values( $item_meta ),
            );
        }

        // add shipping
        foreach ( $order->get_shipping_methods() as $shipping_item_id => $shipping_item ) {
            $order_data['shipping_lines'][] = array(
                'id'           => $shipping_item_id,
                'method_id'    => $shipping_item->get_method_id(),
                'method_title' => $shipping_item->get_name(),
                'total'        => wc_format_decimal( $shipping_item->get_total(), $dp ),
            );
        }

        // add taxes
        foreach ( $order->get_tax_totals() as $tax_code => $tax ) {
            $order_data['tax_lines'][] = array(
                'id'       => $tax->id,
                'rate_id'  => $tax->rate_id,
                'code'     => $tax_code,
                'title'    => $tax->label,
                'total'    => wc_format_decimal( $tax->amount, $dp ),
                'compound' => (bool) $tax->is_compound,
            );
        }

        // add fees
        foreach ( $order->get_fees() as $fee_item_id => $fee_item ) {
            $order_data['fee_lines'][] = array(
                'id'        => $fee_item_id,
                'title'     => $fee_item->get_name(),
                'tax_class' => $fee_item->get_tax_class(),
                'total'     => wc_format_decimal( $order->get_line_total( $fee_item ), $dp ),
                'total_tax' => wc_format_decimal( $order->get_line_tax( $fee_item ), $dp ),
            );
        }

        // add coupons
        foreach ( $order->get_items( 'coupon' ) as $coupon_item_id => $coupon_item ) {
            $order_data['coupon_lines'][] = array(
                'id'     => $coupon_item_id,
                'code'   => $coupon_item->get_code(),
                'amount' => wc_format_decimal( $coupon_item->get_discount(), $dp ),
            );
        }

        return array( 'order' => apply_filters( 'woocommerce_api_order_response', $order_data, $order, $fields, $this->server ) );
    }

    /**
     * Get the total number of orders
     *
     * @since 2.4
     *
     * @param string $status
     * @param array $filter
     *
     * @return array|WP_Error
     */
    public function get_orders_count( $status = null, $filter = array() ) {

        try {
            if ( ! current_user_can( 'read_private_shop_orders' ) ) {
                throw new WC_API_Exception( 'woocommerce_api_user_cannot_read_orders_count', __( 'You do not have permission to read the orders count', 'woocommerce' ), 401 );
            }

            if ( ! empty( $status ) ) {

                if ( 'any' === $status ) {

                    $order_statuses = array();

                    foreach ( wc_get_order_statuses() as $slug => $name ) {
                        $filter['status'] = str_replace( 'wc-', '', $slug );
                        $query = $this->query_orders( $filter );
                        $order_statuses[ str_replace( 'wc-', '', $slug ) ] = (int) $query->found_posts;
                    }

                    return array( 'count' => $order_statuses );

                } else {
                    $filter['status'] = $status;
                }
            }

            $query = $this->query_orders( $filter );

            return array( 'count' => (int) $query->found_posts );

        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Get a list of valid order statuses
     *
     * Note this requires no specific permissions other than being an authenticated
     * API user. Order statuses (particularly custom statuses) could be considered
     * private information which is why it's not in the API index.
     *
     * @since 2.1
     * @return array
     */
    public function get_order_statuses() {

        $order_statuses = array();

        foreach ( wc_get_order_statuses() as $slug => $name ) {
            $order_statuses[ str_replace( 'wc-', '', $slug ) ] = $name;
        }

        return array( 'order_statuses' => apply_filters( 'woocommerce_api_order_statuses_response', $order_statuses, $this ) );
    }

    /**
     * Create an order
     *
     * @since 2.2
     *
     * @param array $data raw order data
     *
     * @return array|WP_Error
     */
    public function create_order( $data ) {
        global $wpdb;

        try {
            if ( ! isset( $data['order'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_order_data', sprintf( __( 'No %1$s data specified to create %1$s', 'woocommerce' ), 'order' ), 400 );
            }

            $data = $data['order'];

            // permission check
            if ( ! current_user_can( 'publish_shop_orders' ) ) {
                throw new WC_API_Exception( 'woocommerce_api_user_cannot_create_order', __( 'You do not have permission to create orders', 'woocommerce' ), 401 );
            }

            $data = apply_filters( 'woocommerce_api_create_order_data', $data, $this );

            // default order args, note that status is checked for validity in wc_create_order()
            $default_order_args = array(
                'status'        => isset( $data['status'] ) ? $data['status'] : '',
                'customer_note' => isset( $data['note'] ) ? $data['note'] : null,
            );

            // if creating order for existing customer
            if ( ! empty( $data['customer_id'] ) ) {

                // make sure customer exists
                if ( false === get_user_by( 'id', $data['customer_id'] ) ) {
                    throw new WC_API_Exception( 'woocommerce_api_invalid_customer_id', __( 'Customer ID is invalid.', 'woocommerce' ), 400 );
                }

                $default_order_args['customer_id'] = $data['customer_id'];
            }

            // create the pending order
            $order = $this->create_base_order( $default_order_args, $data );

            if ( is_wp_error( $order ) ) {
                throw new WC_API_Exception( 'woocommerce_api_cannot_create_order', sprintf( __( 'Cannot create order: %s', 'woocommerce' ), implode( ', ', $order->get_error_messages() ) ), 400 );
            }

            // billing/shipping addresses
            $this->set_order_addresses( $order, $data );

            $lines = array(
                'line_item' => 'line_items',
                'shipping'  => 'shipping_lines',
                'fee'       => 'fee_lines',
                'coupon'    => 'coupon_lines',
            );

            foreach ( $lines as $line_type => $line ) {

                if ( isset( $data[ $line ] ) && is_array( $data[ $line ] ) ) {

                    $set_item = "set_{$line_type}";

                    foreach ( $data[ $line ] as $item ) {

                        $this->$set_item( $order, $item, 'create' );
                    }
                }
            }

            // calculate totals and set them
            $order->calculate_totals();

            // payment method (and payment_complete() if `paid` == true)
            if ( isset( $data['payment_details'] ) && is_array( $data['payment_details'] ) ) {

                // method ID & title are required
                if ( empty( $data['payment_details']['method_id'] ) || empty( $data['payment_details']['method_title'] ) ) {
                    throw new WC_API_Exception( 'woocommerce_invalid_payment_details', __( 'Payment method ID and title are required', 'woocommerce' ), 400 );
                }

                update_post_meta( $order->get_id(), '_payment_method', $data['payment_details']['method_id'] );
                update_post_meta( $order->get_id(), '_payment_method_title', sanitize_text_field( $data['payment_details']['method_title'] ) );

                // mark as paid if set
                if ( isset( $data['payment_details']['paid'] ) && true === $data['payment_details']['paid'] ) {
                    $order->payment_complete( isset( $data['payment_details']['transaction_id'] ) ? $data['payment_details']['transaction_id'] : '' );
                }
            }

            // set order currency
            if ( isset( $data['currency'] ) ) {

                if ( ! array_key_exists( $data['currency'], get_woocommerce_currencies() ) ) {
                    throw new WC_API_Exception( 'woocommerce_invalid_order_currency', __( 'Provided order currency is invalid.', 'woocommerce' ), 400 );
                }

                update_post_meta( $order->get_id(), '_order_currency', $data['currency'] );
            }

            // set order meta
            if ( isset( $data['order_meta'] ) && is_array( $data['order_meta'] ) ) {
                $this->set_order_meta( $order->get_id(), $data['order_meta'] );
            }

            // HTTP 201 Created
            $this->server->send_status( 201 );

            wc_delete_shop_order_transients( $order );

            do_action( 'woocommerce_api_create_order', $order->get_id(), $data, $this );
            do_action( 'woocommerce_new_order', $order->get_id() );

            return $this->get_order( $order->get_id() );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Creates new WC_Order.
     *
     * Requires a separate function for classes that extend WC_API_Orders.
     *
     * @since 2.3
     *
     * @param $args array
     * @param $data
     *
     * @return WC_Order
     */
    protected function create_base_order( $args, $data ) {
        return wc_create_order( $args );
    }

    /**
     * Edit an order
     *
     * @since 2.2
     *
     * @param int $id the order ID
     * @param array $data
     *
     * @return array|WP_Error
     */
    public function edit_order( $id, $data ) {
        try {
            if ( ! isset( $data['order'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_order_data', sprintf( __( 'No %1$s data specified to edit %1$s', 'woocommerce' ), 'order' ), 400 );
            }

            $data = $data['order'];

            $update_totals = false;

            $id = $this->validate_request( $id, $this->post_type, 'edit' );

            if ( is_wp_error( $id ) ) {
                return $id;
            }

            $data  = apply_filters( 'woocommerce_api_edit_order_data', $data, $id, $this );
            $order = wc_get_order( $id );

            if ( empty( $order ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_id', __( 'Order ID is invalid', 'woocommerce' ), 400 );
            }

            $order_args = array( 'order_id' => $order->get_id() );

            // Customer note.
            if ( isset( $data['note'] ) ) {
                $order_args['customer_note'] = $data['note'];
            }

            // Customer ID.
            if ( isset( $data['customer_id'] ) && $data['customer_id'] != $order->get_user_id() ) {
                // Make sure customer exists.
                if ( false === get_user_by( 'id', $data['customer_id'] ) ) {
                    throw new WC_API_Exception( 'woocommerce_api_invalid_customer_id', __( 'Customer ID is invalid.', 'woocommerce' ), 400 );
                }

                update_post_meta( $order->get_id(), '_customer_user', $data['customer_id'] );
            }

            // Billing/shipping address.
            $this->set_order_addresses( $order, $data );

            $lines = array(
                'line_item' => 'line_items',
                'shipping'  => 'shipping_lines',
                'fee'       => 'fee_lines',
                'coupon'    => 'coupon_lines',
            );

            foreach ( $lines as $line_type => $line ) {

                if ( isset( $data[ $line ] ) && is_array( $data[ $line ] ) ) {

                    $update_totals = true;

                    foreach ( $data[ $line ] as $item ) {

                        // Item ID is always required.
                        if ( ! array_key_exists( 'id', $item ) ) {
                            $item['id'] = null;
                        }

                        // Create item.
                        if ( is_null( $item['id'] ) ) {
                            $this->set_item( $order, $line_type, $item, 'create' );
                        } elseif ( $this->item_is_null( $item ) ) {
                            // Delete item.
                            wc_delete_order_item( $item['id'] );
                        } else {
                            // Update item.
                            $this->set_item( $order, $line_type, $item, 'update' );
                        }
                    }
                }
            }

            // Payment method (and payment_complete() if `paid` == true and order needs payment).
            if ( isset( $data['payment_details'] ) && is_array( $data['payment_details'] ) ) {

                // Method ID.
                if ( isset( $data['payment_details']['method_id'] ) ) {
                    update_post_meta( $order->get_id(), '_payment_method', $data['payment_details']['method_id'] );
                }

                // Method title.
                if ( isset( $data['payment_details']['method_title'] ) ) {
                    update_post_meta( $order->get_id(), '_payment_method_title', sanitize_text_field( $data['payment_details']['method_title'] ) );
                }

                // Mark as paid if set.
                if ( $order->needs_payment() && isset( $data['payment_details']['paid'] ) && true === $data['payment_details']['paid'] ) {
                    $order->payment_complete( isset( $data['payment_details']['transaction_id'] ) ? $data['payment_details']['transaction_id'] : '' );
                }
            }

            // Set order currency.
            if ( isset( $data['currency'] ) ) {
                if ( ! array_key_exists( $data['currency'], get_woocommerce_currencies() ) ) {
                    throw new WC_API_Exception( 'woocommerce_invalid_order_currency', __( 'Provided order currency is invalid.', 'woocommerce' ), 400 );
                }

                update_post_meta( $order->get_id(), '_order_currency', $data['currency'] );
            }

            // If items have changed, recalculate order totals.
            if ( $update_totals ) {
                $order->calculate_totals();
            }

            // Update order meta.
            if ( isset( $data['order_meta'] ) && is_array( $data['order_meta'] ) ) {
                $this->set_order_meta( $order->get_id(), $data['order_meta'] );
            }

            // Update the order post to set customer note/modified date.
            wc_update_order( $order_args );

            // Order status.
            if ( ! empty( $data['status'] ) ) {
                // Refresh the order instance.
                $order = wc_get_order( $order->get_id() );
                $order->update_status( $data['status'], isset( $data['status_note'] ) ? $data['status_note'] : '', true );
            }

            wc_delete_shop_order_transients( $order );

            do_action( 'woocommerce_api_edit_order', $order->get_id(), $data, $this );
            do_action( 'woocommerce_update_order', $order->get_id() );

            return $this->get_order( $id );

        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Delete an order
     *
     * @param int $id the order ID
     * @param bool $force true to permanently delete order, false to move to trash
     * @return array|WP_Error
     */
    public function delete_order( $id, $force = false ) {

        $id = $this->validate_request( $id, $this->post_type, 'delete' );

        if ( is_wp_error( $id ) ) {
            return $id;
        }

        wc_delete_shop_order_transients( $id );

        do_action( 'woocommerce_api_delete_order', $id, $this );

        return $this->delete( $id, 'order',  ( 'true' === $force ) );
    }

    /**
     * Helper method to get order post objects
     *
     * @since 2.1
     * @param array $args request arguments for filtering query
     * @return WP_Query
     */
    protected function query_orders( $args ) {

        // set base query arguments
        $query_args = array(
            'fields'      => 'ids',
            'post_type'   => $this->post_type,
            'post_status' => array_keys( wc_get_order_statuses() ),
        );

        // add status argument
        if ( ! empty( $args['status'] ) ) {

            $statuses                  = 'wc-' . str_replace( ',', ',wc-', $args['status'] );
            $statuses                  = explode( ',', $statuses );
            $query_args['post_status'] = $statuses;

            unset( $args['status'] );

        }

        $query_args = $this->merge_query_args( $query_args, $args );

        return new WP_Query( $query_args );
    }

    /**
     * Helper method to set/update the billing & shipping addresses for
     * an order
     *
     * @since 2.1
     * @param \WC_Order $order
     * @param array $data
     */
    protected function set_order_addresses( $order, $data ) {

        $address_fields = array(
            'first_name',
            'last_name',
            'company',
            'email',
            'phone',
            'address_1',
            'address_2',
            'city',
            'state',
            'postcode',
            'country',
        );

        $billing_address = $shipping_address = array();

        // billing address
        if ( isset( $data['billing_address'] ) && is_array( $data['billing_address'] ) ) {

            foreach ( $address_fields as $field ) {

                if ( isset( $data['billing_address'][ $field ] ) ) {
                    $billing_address[ $field ] = wc_clean( $data['billing_address'][ $field ] );
                }
            }

            unset( $address_fields['email'] );
            unset( $address_fields['phone'] );
        }

        // shipping address
        if ( isset( $data['shipping_address'] ) && is_array( $data['shipping_address'] ) ) {

            foreach ( $address_fields as $field ) {

                if ( isset( $data['shipping_address'][ $field ] ) ) {
                    $shipping_address[ $field ] = wc_clean( $data['shipping_address'][ $field ] );
                }
            }
        }

        $this->update_address( $order, $billing_address, 'billing' );
        $this->update_address( $order, $shipping_address, 'shipping' );

        // update user meta
        if ( $order->get_user_id() ) {
            foreach ( $billing_address as $key => $value ) {
                update_user_meta( $order->get_user_id(), 'billing_' . $key, $value );
            }
            foreach ( $shipping_address as $key => $value ) {
                update_user_meta( $order->get_user_id(), 'shipping_' . $key, $value );
            }
        }
    }

    /**
     * Update address.
     *
     * @param WC_Order $order
     * @param array $posted
     * @param string $type
     */
    protected function update_address( $order, $posted, $type = 'billing' ) {
        foreach ( $posted as $key => $value ) {
            if ( is_callable( array( $order, "set_{$type}_{$key}" ) ) ) {
                $order->{"set_{$type}_{$key}"}( $value );
            }
        }
    }

    /**
     * Helper method to add/update order meta, with two restrictions:
     *
     * 1) Only non-protected meta (no leading underscore) can be set
     * 2) Meta values must be scalar (int, string, bool)
     *
     * @since 2.2
     * @param int $order_id valid order ID
     * @param array $order_meta order meta in array( 'meta_key' => 'meta_value' ) format
     */
    protected function set_order_meta( $order_id, $order_meta ) {

        foreach ( $order_meta as $meta_key => $meta_value ) {

            if ( is_string( $meta_key ) && ! is_protected_meta( $meta_key ) && is_scalar( $meta_value ) ) {
                update_post_meta( $order_id, $meta_key, $meta_value );
            }
        }
    }

    /**
     * Helper method to check if the resource ID associated with the provided item is null
     *
     * Items can be deleted by setting the resource ID to null
     *
     * @since 2.2
     * @param array $item item provided in the request body
     * @return bool true if the item resource ID is null, false otherwise
     */
    protected function item_is_null( $item ) {

        $keys = array( 'product_id', 'method_id', 'title', 'code' );

        foreach ( $keys as $key ) {
            if ( array_key_exists( $key, $item ) && is_null( $item[ $key ] ) ) {
                return true;
            }
        }

        return false;
    }

    /**
     * Wrapper method to create/update order items
     *
     * When updating, the item ID provided is checked to ensure it is associated
     * with the order.
     *
     * @since 2.2
     * @param \WC_Order $order order
     * @param string $item_type
     * @param array $item item provided in the request body
     * @param string $action either 'create' or 'update'
     * @throws WC_API_Exception if item ID is not associated with order
     */
    protected function set_item( $order, $item_type, $item, $action ) {
        global $wpdb;

        $set_method = "set_{$item_type}";

        // verify provided line item ID is associated with order
        if ( 'update' === $action ) {

            $result = $wpdb->get_row(
                $wpdb->prepare( "SELECT * FROM {$wpdb->prefix}woocommerce_order_items WHERE order_item_id = %d AND order_id = %d",
                absint( $item['id'] ),
                absint( $order->get_id() )
            ) );

            if ( is_null( $result ) ) {
                throw new WC_API_Exception( 'woocommerce_invalid_item_id', __( 'Order item ID provided is not associated with order.', 'woocommerce' ), 400 );
            }
        }

        $this->$set_method( $order, $item, $action );
    }

    /**
     * Create or update a line item
     *
     * @since 2.2
     * @param \WC_Order $order
     * @param array $item line item data
     * @param string $action 'create' to add line item or 'update' to update it
     * @throws WC_API_Exception invalid data, server error
     */
    protected function set_line_item( $order, $item, $action ) {
        $creating  = ( 'create' === $action );

        // product is always required
        if ( ! isset( $item['product_id'] ) && ! isset( $item['sku'] ) ) {
            throw new WC_API_Exception( 'woocommerce_api_invalid_product_id', __( 'Product ID or SKU is required', 'woocommerce' ), 400 );
        }

        // when updating, ensure product ID provided matches
        if ( 'update' === $action ) {

            $item_product_id   = wc_get_order_item_meta( $item['id'], '_product_id' );
            $item_variation_id = wc_get_order_item_meta( $item['id'], '_variation_id' );

            if ( $item['product_id'] != $item_product_id && $item['product_id'] != $item_variation_id ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_product_id', __( 'Product ID provided does not match this line item', 'woocommerce' ), 400 );
            }
        }

        if ( isset( $item['product_id'] ) ) {
            $product_id = $item['product_id'];
        } elseif ( isset( $item['sku'] ) ) {
            $product_id = wc_get_product_id_by_sku( $item['sku'] );
        }

        // variations must each have a key & value
        $variation_id = 0;
        if ( isset( $item['variations'] ) && is_array( $item['variations'] ) ) {
            foreach ( $item['variations'] as $key => $value ) {
                if ( ! $key || ! $value ) {
                    throw new WC_API_Exception( 'woocommerce_api_invalid_product_variation', __( 'The product variation is invalid', 'woocommerce' ), 400 );
                }
            }
            $variation_id = $this->get_variation_id( wc_get_product( $product_id ), $item['variations'] );
        }

        $product = wc_get_product( $variation_id ? $variation_id : $product_id );

        // must be a valid WC_Product
        if ( ! is_object( $product ) ) {
            throw new WC_API_Exception( 'woocommerce_api_invalid_product', __( 'Product is invalid.', 'woocommerce' ), 400 );
        }

        // quantity must be positive float
        if ( isset( $item['quantity'] ) && floatval( $item['quantity'] ) <= 0 ) {
            throw new WC_API_Exception( 'woocommerce_api_invalid_product_quantity', __( 'Product quantity must be a positive float.', 'woocommerce' ), 400 );
        }

        // quantity is required when creating
        if ( $creating && ! isset( $item['quantity'] ) ) {
            throw new WC_API_Exception( 'woocommerce_api_invalid_product_quantity', __( 'Product quantity is required.', 'woocommerce' ), 400 );
        }

        if ( $creating ) {
            $line_item = new WC_Order_Item_Product();
        } else {
            $line_item = new WC_Order_Item_Product( $item['id'] );
        }

        $line_item->set_product( $product );
        $line_item->set_order_id( $order->get_id() );

        if ( isset( $item['quantity'] ) ) {
            $line_item->set_quantity( $item['quantity'] );
        }
        if ( isset( $item['total'] ) ) {
            $line_item->set_total( floatval( $item['total'] ) );
        } elseif ( $creating ) {
            $total = wc_get_price_excluding_tax( $product, array( 'qty' => $line_item->get_quantity() ) );
            $line_item->set_total( $total );
            $line_item->set_subtotal( $total );
        }
        if ( isset( $item['total_tax'] ) ) {
            $line_item->set_total_tax( floatval( $item['total_tax'] ) );
        }
        if ( isset( $item['subtotal'] ) ) {
            $line_item->set_subtotal( floatval( $item['subtotal'] ) );
        }
        if ( isset( $item['subtotal_tax'] ) ) {
            $line_item->set_subtotal_tax( floatval( $item['subtotal_tax'] ) );
        }
        if ( $variation_id ) {
            $line_item->set_variation_id( $variation_id );
            $line_item->set_variation( $item['variations'] );
        }

        // Save or add to order.
        if ( $creating ) {
            $order->add_item( $line_item );
        } else {
            $item_id = $line_item->save();

            if ( ! $item_id ) {
                throw new WC_API_Exception( 'woocommerce_cannot_create_line_item', __( 'Cannot create line item, try again.', 'woocommerce' ), 500 );
            }
        }
    }

    /**
     * Given a product ID & API provided variations, find the correct variation ID to use for calculation
     * We can't just trust input from the API to pass a variation_id manually, otherwise you could pass
     * the cheapest variation ID but provide other information so we have to look up the variation ID.
     *
     * @param WC_Product $product
     * @param array $variations
     *
     * @return int returns an ID if a valid variation was found for this product
     */
    function get_variation_id( $product, $variations = array() ) {
        $variation_id = null;
        $variations_normalized = array();

        if ( $product->is_type( 'variable' ) && $product->has_child() ) {
            if ( isset( $variations ) && is_array( $variations ) ) {
                // start by normalizing the passed variations
                foreach ( $variations as $key => $value ) {
                    $key = str_replace( 'attribute_', '', wc_attribute_taxonomy_slug( $key ) ); // from get_attributes in class-wc-api-products.php
                    $variations_normalized[ $key ] = strtolower( $value );
                }
                // now search through each product child and see if our passed variations match anything
                foreach ( $product->get_children() as $variation ) {
                    $meta = array();
                    foreach ( get_post_meta( $variation ) as $key => $value ) {
                        $value = $value[0];
                        $key = str_replace( 'attribute_', '', wc_attribute_taxonomy_slug( $key ) );
                        $meta[ $key ] = strtolower( $value );
                    }
                    // if the variation array is a part of the $meta array, we found our match
                    if ( $this->array_contains( $variations_normalized, $meta ) ) {
                        $variation_id = $variation;
                        break;
                    }
                }
            }
        }

        return $variation_id;
    }

    /**
     * Utility function to see if the meta array contains data from variations
     *
     * @param array $needles
     * @param array $haystack
     *
     * @return bool
     */
    protected function array_contains( $needles, $haystack ) {
        foreach ( $needles as $key => $value ) {
            if ( $haystack[ $key ] !== $value ) {
                return false;
            }
        }
        return true;
    }

    /**
     * Create or update an order shipping method
     *
     * @since 2.2
     * @param \WC_Order $order
     * @param array $shipping item data
     * @param string $action 'create' to add shipping or 'update' to update it
     * @throws WC_API_Exception invalid data, server error
     */
    protected function set_shipping( $order, $shipping, $action ) {

        // total must be a positive float
        if ( isset( $shipping['total'] ) && floatval( $shipping['total'] ) < 0 ) {
            throw new WC_API_Exception( 'woocommerce_invalid_shipping_total', __( 'Shipping total must be a positive amount.', 'woocommerce' ), 400 );
        }

        if ( 'create' === $action ) {

            // method ID is required
            if ( ! isset( $shipping['method_id'] ) ) {
                throw new WC_API_Exception( 'woocommerce_invalid_shipping_item', __( 'Shipping method ID is required.', 'woocommerce' ), 400 );
            }

            $rate = new WC_Shipping_Rate( $shipping['method_id'], isset( $shipping['method_title'] ) ? $shipping['method_title'] : '', isset( $shipping['total'] ) ? floatval( $shipping['total'] ) : 0, array(), $shipping['method_id'] );
            $item = new WC_Order_Item_Shipping();
            $item->set_order_id( $order->get_id() );
            $item->set_shipping_rate( $rate );
            $order->add_item( $item );
        } else {

            $item = new WC_Order_Item_Shipping( $shipping['id'] );

            if ( isset( $shipping['method_id'] ) ) {
                $item->set_method_id( $shipping['method_id'] );
            }

            if ( isset( $shipping['method_title'] ) ) {
                $item->set_method_title( $shipping['method_title'] );
            }

            if ( isset( $shipping['total'] ) ) {
                $item->set_total( floatval( $shipping['total'] ) );
            }

            $shipping_id = $item->save();

            if ( ! $shipping_id ) {
                throw new WC_API_Exception( 'woocommerce_cannot_update_shipping', __( 'Cannot update shipping method, try again.', 'woocommerce' ), 500 );
            }
        }
    }

    /**
     * Create or update an order fee
     *
     * @since 2.2
     * @param \WC_Order $order
     * @param array $fee item data
     * @param string $action 'create' to add fee or 'update' to update it
     * @throws WC_API_Exception invalid data, server error
     */
    protected function set_fee( $order, $fee, $action ) {

        if ( 'create' === $action ) {

            // fee title is required
            if ( ! isset( $fee['title'] ) ) {
                throw new WC_API_Exception( 'woocommerce_invalid_fee_item', __( 'Fee title is required', 'woocommerce' ), 400 );
            }

            $item = new WC_Order_Item_Fee();
            $item->set_order_id( $order->get_id() );
            $item->set_name( wc_clean( $fee['title'] ) );
            $item->set_total( isset( $fee['total'] ) ? floatval( $fee['total'] ) : 0 );

            // if taxable, tax class and total are required
            if ( ! empty( $fee['taxable'] ) ) {
                if ( ! isset( $fee['tax_class'] ) ) {
                    throw new WC_API_Exception( 'woocommerce_invalid_fee_item', __( 'Fee tax class is required when fee is taxable.', 'woocommerce' ), 400 );
                }

                $item->set_tax_status( 'taxable' );
                $item->set_tax_class( $fee['tax_class'] );

                if ( isset( $fee['total_tax'] ) ) {
                    $item->set_total_tax( isset( $fee['total_tax'] ) ? wc_format_refund_total( $fee['total_tax'] ) : 0 );
                }

                if ( isset( $fee['tax_data'] ) ) {
                    $item->set_total_tax( wc_format_refund_total( array_sum( $fee['tax_data'] ) ) );
                    $item->set_taxes( array_map( 'wc_format_refund_total', $fee['tax_data'] ) );
                }
            }

            $order->add_item( $item );
        } else {

            $item = new WC_Order_Item_Fee( $fee['id'] );

            if ( isset( $fee['title'] ) ) {
                $item->set_name( wc_clean( $fee['title'] ) );
            }

            if ( isset( $fee['tax_class'] ) ) {
                $item->set_tax_class( $fee['tax_class'] );
            }

            if ( isset( $fee['total'] ) ) {
                $item->set_total( floatval( $fee['total'] ) );
            }

            if ( isset( $fee['total_tax'] ) ) {
                $item->set_total_tax( floatval( $fee['total_tax'] ) );
            }

            $fee_id = $item->save();

            if ( ! $fee_id ) {
                throw new WC_API_Exception( 'woocommerce_cannot_update_fee', __( 'Cannot update fee, try again.', 'woocommerce' ), 500 );
            }
        }
    }

    /**
     * Create or update an order coupon
     *
     * @since 2.2
     * @param \WC_Order $order
     * @param array $coupon item data
     * @param string $action 'create' to add coupon or 'update' to update it
     * @throws WC_API_Exception invalid data, server error
     */
    protected function set_coupon( $order, $coupon, $action ) {

        // coupon amount must be positive float
        if ( isset( $coupon['amount'] ) && floatval( $coupon['amount'] ) < 0 ) {
            throw new WC_API_Exception( 'woocommerce_invalid_coupon_total', __( 'Coupon discount total must be a positive amount.', 'woocommerce' ), 400 );
        }

        if ( 'create' === $action ) {

            // coupon code is required
            if ( empty( $coupon['code'] ) ) {
                throw new WC_API_Exception( 'woocommerce_invalid_coupon_coupon', __( 'Coupon code is required.', 'woocommerce' ), 400 );
            }

            $item = new WC_Order_Item_Coupon();
            $item->set_props( array(
                'code'         => $coupon['code'],
                'discount'     => isset( $coupon['amount'] ) ? floatval( $coupon['amount'] ) : 0,
                'discount_tax' => 0,
                'order_id'     => $order->get_id(),
            ) );
            $order->add_item( $item );
        } else {

            $item = new WC_Order_Item_Coupon( $coupon['id'] );

            if ( isset( $coupon['code'] ) ) {
                $item->set_code( $coupon['code'] );
            }

            if ( isset( $coupon['amount'] ) ) {
                $item->set_discount( floatval( $coupon['amount'] ) );
            }

            $coupon_id = $item->save();

            if ( ! $coupon_id ) {
                throw new WC_API_Exception( 'woocommerce_cannot_update_order_coupon', __( 'Cannot update coupon, try again.', 'woocommerce' ), 500 );
            }
        }
    }

    /**
     * Get the admin order notes for an order
     *
     * @since 2.1
     * @param string $order_id order ID
     * @param string|null $fields fields to include in response
     * @return array|WP_Error
     */
    public function get_order_notes( $order_id, $fields = null ) {

        // ensure ID is valid order ID
        $order_id = $this->validate_request( $order_id, $this->post_type, 'read' );

        if ( is_wp_error( $order_id ) ) {
            return $order_id;
        }

        $args = array(
            'post_id' => $order_id,
            'approve' => 'approve',
            'type'    => 'order_note',
        );

        remove_filter( 'comments_clauses', array( 'WC_Comments', 'exclude_order_comments' ), 10, 1 );

        $notes = get_comments( $args );

        add_filter( 'comments_clauses', array( 'WC_Comments', 'exclude_order_comments' ), 10, 1 );

        $order_notes = array();

        foreach ( $notes as $note ) {

            $order_notes[] = current( $this->get_order_note( $order_id, $note->comment_ID, $fields ) );
        }

        return array( 'order_notes' => apply_filters( 'woocommerce_api_order_notes_response', $order_notes, $order_id, $fields, $notes, $this->server ) );
    }

    /**
     * Get an order note for the given order ID and ID
     *
     * @since 2.2
     *
     * @param string $order_id order ID
     * @param string $id order note ID
     * @param string|null $fields fields to limit response to
     *
     * @return array|WP_Error
     */
    public function get_order_note( $order_id, $id, $fields = null ) {
        try {
            // Validate order ID
            $order_id = $this->validate_request( $order_id, $this->post_type, 'read' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            $id = absint( $id );

            if ( empty( $id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'Invalid order note ID', 'woocommerce' ), 400 );
            }

            $note = get_comment( $id );

            if ( is_null( $note ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'An order note with the provided ID could not be found', 'woocommerce' ), 404 );
            }

            $order_note = array(
                'id'            => $note->comment_ID,
                'created_at'    => $this->server->format_datetime( $note->comment_date_gmt ),
                'note'          => $note->comment_content,
                'customer_note' => (bool) get_comment_meta( $note->comment_ID, 'is_customer_note', true ),
            );

            return array( 'order_note' => apply_filters( 'woocommerce_api_order_note_response', $order_note, $id, $fields, $note, $order_id, $this ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Create a new order note for the given order
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param array $data raw request data
     * @return WP_Error|array error or created note response data
     */
    public function create_order_note( $order_id, $data ) {
        try {
            if ( ! isset( $data['order_note'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_order_note_data', sprintf( __( 'No %1$s data specified to create %1$s', 'woocommerce' ), 'order_note' ), 400 );
            }

            $data = $data['order_note'];

            // permission check
            if ( ! current_user_can( 'publish_shop_orders' ) ) {
                throw new WC_API_Exception( 'woocommerce_api_user_cannot_create_order_note', __( 'You do not have permission to create order notes', 'woocommerce' ), 401 );
            }

            $order_id = $this->validate_request( $order_id, $this->post_type, 'edit' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            $order = wc_get_order( $order_id );

            $data = apply_filters( 'woocommerce_api_create_order_note_data', $data, $order_id, $this );

            // note content is required
            if ( ! isset( $data['note'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note', __( 'Order note is required', 'woocommerce' ), 400 );
            }

            $is_customer_note = ( isset( $data['customer_note'] ) && true === $data['customer_note'] );

            // create the note
            $note_id = $order->add_order_note( $data['note'], $is_customer_note );

            if ( ! $note_id ) {
                throw new WC_API_Exception( 'woocommerce_api_cannot_create_order_note', __( 'Cannot create order note, please try again.', 'woocommerce' ), 500 );
            }

            // HTTP 201 Created
            $this->server->send_status( 201 );

            do_action( 'woocommerce_api_create_order_note', $note_id, $order_id, $this );

            return $this->get_order_note( $order->get_id(), $note_id );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Edit the order note
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param string $id note ID
     * @param array $data parsed request data
     * @return WP_Error|array error or edited note response data
     */
    public function edit_order_note( $order_id, $id, $data ) {
        try {
            if ( ! isset( $data['order_note'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_order_note_data', sprintf( __( 'No %1$s data specified to edit %1$s', 'woocommerce' ), 'order_note' ), 400 );
            }

            $data = $data['order_note'];

            // Validate order ID
            $order_id = $this->validate_request( $order_id, $this->post_type, 'edit' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            $order = wc_get_order( $order_id );

            // Validate note ID
            $id = absint( $id );

            if ( empty( $id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'Invalid order note ID', 'woocommerce' ), 400 );
            }

            // Ensure note ID is valid
            $note = get_comment( $id );

            if ( is_null( $note ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'An order note with the provided ID could not be found', 'woocommerce' ), 404 );
            }

            // Ensure note ID is associated with given order
            if ( $note->comment_post_ID != $order->get_id() ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'The order note ID provided is not associated with the order', 'woocommerce' ), 400 );
            }

            $data = apply_filters( 'woocommerce_api_edit_order_note_data', $data, $note->comment_ID, $order->get_id(), $this );

            // Note content
            if ( isset( $data['note'] ) ) {

                wp_update_comment(
                    array(
                        'comment_ID'      => $note->comment_ID,
                        'comment_content' => $data['note'],
                    )
                );
            }

            // Customer note
            if ( isset( $data['customer_note'] ) ) {

                update_comment_meta( $note->comment_ID, 'is_customer_note', true === $data['customer_note'] ? 1 : 0 );
            }

            do_action( 'woocommerce_api_edit_order_note', $note->comment_ID, $order->get_id(), $this );

            return $this->get_order_note( $order->get_id(), $note->comment_ID );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Delete order note
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param string $id note ID
     * @return WP_Error|array error or deleted message
     */
    public function delete_order_note( $order_id, $id ) {
        try {
            $order_id = $this->validate_request( $order_id, $this->post_type, 'delete' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            // Validate note ID
            $id = absint( $id );

            if ( empty( $id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'Invalid order note ID', 'woocommerce' ), 400 );
            }

            // Ensure note ID is valid
            $note = get_comment( $id );

            if ( is_null( $note ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'An order note with the provided ID could not be found', 'woocommerce' ), 404 );
            }

            // Ensure note ID is associated with given order
            if ( $note->comment_post_ID != $order_id ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_note_id', __( 'The order note ID provided is not associated with the order', 'woocommerce' ), 400 );
            }

            // Force delete since trashed order notes could not be managed through comments list table
            $result = wc_delete_order_note( $note->comment_ID );

            if ( ! $result ) {
                throw new WC_API_Exception( 'woocommerce_api_cannot_delete_order_note', __( 'This order note cannot be deleted', 'woocommerce' ), 500 );
            }

            do_action( 'woocommerce_api_delete_order_note', $note->comment_ID, $order_id, $this );

            return array( 'message' => __( 'Permanently deleted order note', 'woocommerce' ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Get the order refunds for an order
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param string|null $fields fields to include in response
     * @return array|WP_Error
     */
    public function get_order_refunds( $order_id, $fields = null ) {

        // Ensure ID is valid order ID
        $order_id = $this->validate_request( $order_id, $this->post_type, 'read' );

        if ( is_wp_error( $order_id ) ) {
            return $order_id;
        }

        $refund_items = wc_get_orders( array(
            'type'   => 'shop_order_refund',
            'parent' => $order_id,
            'limit'  => -1,
            'return' => 'ids',
        ) );
        $order_refunds = array();

        foreach ( $refund_items as $refund_id ) {
            $order_refunds[] = current( $this->get_order_refund( $order_id, $refund_id, $fields ) );
        }

        return array( 'order_refunds' => apply_filters( 'woocommerce_api_order_refunds_response', $order_refunds, $order_id, $fields, $refund_items, $this ) );
    }

    /**
     * Get an order refund for the given order ID and ID
     *
     * @since 2.2
     *
     * @param string $order_id order ID
     * @param int $id
     * @param string|null $fields fields to limit response to
     * @param array $filter
     *
     * @return array|WP_Error
     */
    public function get_order_refund( $order_id, $id, $fields = null, $filter = array() ) {
        try {
            // Validate order ID
            $order_id = $this->validate_request( $order_id, $this->post_type, 'read' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            $id = absint( $id );

            if ( empty( $id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'Invalid order refund ID.', 'woocommerce' ), 400 );
            }

            $order  = wc_get_order( $order_id );
            $refund = wc_get_order( $id );

            if ( ! $refund ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'An order refund with the provided ID could not be found.', 'woocommerce' ), 404 );
            }

            $line_items = array();

            // Add line items
            foreach ( $refund->get_items( 'line_item' ) as $item_id => $item ) {
                $product    = $item->get_product();
                $hideprefix = ( isset( $filter['all_item_meta'] ) && 'true' === $filter['all_item_meta'] ) ? null : '_';
                $item_meta  = $item->get_formatted_meta_data( $hideprefix );

                foreach ( $item_meta as $key => $values ) {
                    $item_meta[ $key ]->label = $values->display_key;
                    unset( $item_meta[ $key ]->display_key );
                    unset( $item_meta[ $key ]->display_value );
                }

                $line_items[] = array(
                    'id'               => $item_id,
                    'subtotal'         => wc_format_decimal( $order->get_line_subtotal( $item ), 2 ),
                    'subtotal_tax'     => wc_format_decimal( $item->get_subtotal_tax(), 2 ),
                    'total'            => wc_format_decimal( $order->get_line_total( $item ), 2 ),
                    'total_tax'        => wc_format_decimal( $order->get_line_tax( $item ), 2 ),
                    'price'            => wc_format_decimal( $order->get_item_total( $item ), 2 ),
                    'quantity'         => $item->get_quantity(),
                    'tax_class'        => $item->get_tax_class(),
                    'name'             => $item->get_name(),
                    'product_id'       => $item->get_variation_id() ? $item->get_variation_id() : $item->get_product_id(),
                    'sku'              => is_object( $product ) ? $product->get_sku() : null,
                    'meta'             => array_values( $item_meta ),
                    'refunded_item_id' => (int) $item->get_meta( 'refunded_item_id' ),
                );
            }

            $order_refund = array(
                'id'         => $refund->get_id(),
                'created_at' => $this->server->format_datetime( $refund->get_date_created() ? $refund->get_date_created()->getTimestamp() : 0, false, false ),
                'amount'     => wc_format_decimal( $refund->get_amount(), 2 ),
                'reason'     => $refund->get_reason(),
                'line_items' => $line_items,
            );

            return array( 'order_refund' => apply_filters( 'woocommerce_api_order_refund_response', $order_refund, $id, $fields, $refund, $order_id, $this ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Create a new order refund for the given order
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param array $data raw request data
     * @param bool $api_refund do refund using a payment gateway API
     * @return WP_Error|array error or created refund response data
     */
    public function create_order_refund( $order_id, $data, $api_refund = true ) {
        try {
            if ( ! isset( $data['order_refund'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_order_refund_data', sprintf( __( 'No %1$s data specified to create %1$s', 'woocommerce' ), 'order_refund' ), 400 );
            }

            $data = $data['order_refund'];

            // Permission check
            if ( ! current_user_can( 'publish_shop_orders' ) ) {
                throw new WC_API_Exception( 'woocommerce_api_user_cannot_create_order_refund', __( 'You do not have permission to create order refunds', 'woocommerce' ), 401 );
            }

            $order_id = absint( $order_id );

            if ( empty( $order_id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_id', __( 'Order ID is invalid', 'woocommerce' ), 400 );
            }

            $data = apply_filters( 'woocommerce_api_create_order_refund_data', $data, $order_id, $this );

            // Refund amount is required
            if ( ! isset( $data['amount'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund', __( 'Refund amount is required.', 'woocommerce' ), 400 );
            } elseif ( 0 > $data['amount'] ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund', __( 'Refund amount must be positive.', 'woocommerce' ), 400 );
            }

            $data['order_id']  = $order_id;
            $data['refund_id'] = 0;

            // Create the refund
            $refund = wc_create_refund( $data );

            if ( ! $refund ) {
                throw new WC_API_Exception( 'woocommerce_api_cannot_create_order_refund', __( 'Cannot create order refund, please try again.', 'woocommerce' ), 500 );
            }

            // Refund via API
            if ( $api_refund ) {
                if ( WC()->payment_gateways() ) {
                    $payment_gateways = WC()->payment_gateways->payment_gateways();
                }

                $order = wc_get_order( $order_id );

                if ( isset( $payment_gateways[ $order->get_payment_method() ] ) && $payment_gateways[ $order->get_payment_method() ]->supports( 'refunds' ) ) {
                    $result = $payment_gateways[ $order->get_payment_method() ]->process_refund( $order_id, $refund->get_amount(), $refund->get_reason() );

                    if ( is_wp_error( $result ) ) {
                        return $result;
                    } elseif ( ! $result ) {
                        throw new WC_API_Exception( 'woocommerce_api_create_order_refund_api_failed', __( 'An error occurred while attempting to create the refund using the payment gateway API.', 'woocommerce' ), 500 );
                    }
                }
            }

            // HTTP 201 Created
            $this->server->send_status( 201 );

            do_action( 'woocommerce_api_create_order_refund', $refund->get_id(), $order_id, $this );

            return $this->get_order_refund( $order_id, $refund->get_id() );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Edit an order refund
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param string $id refund ID
     * @param array $data parsed request data
     * @return WP_Error|array error or edited refund response data
     */
    public function edit_order_refund( $order_id, $id, $data ) {
        try {
            if ( ! isset( $data['order_refund'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_order_refund_data', sprintf( __( 'No %1$s data specified to edit %1$s', 'woocommerce' ), 'order_refund' ), 400 );
            }

            $data = $data['order_refund'];

            // Validate order ID
            $order_id = $this->validate_request( $order_id, $this->post_type, 'edit' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            // Validate refund ID
            $id = absint( $id );

            if ( empty( $id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'Invalid order refund ID.', 'woocommerce' ), 400 );
            }

            // Ensure order ID is valid
            $refund = get_post( $id );

            if ( ! $refund ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'An order refund with the provided ID could not be found.', 'woocommerce' ), 404 );
            }

            // Ensure refund ID is associated with given order
            if ( $refund->post_parent != $order_id ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'The order refund ID provided is not associated with the order.', 'woocommerce' ), 400 );
            }

            $data = apply_filters( 'woocommerce_api_edit_order_refund_data', $data, $refund->ID, $order_id, $this );

            // Update reason
            if ( isset( $data['reason'] ) ) {
                $updated_refund = wp_update_post( array( 'ID' => $refund->ID, 'post_excerpt' => $data['reason'] ) );

                if ( is_wp_error( $updated_refund ) ) {
                    return $updated_refund;
                }
            }

            // Update refund amount
            if ( isset( $data['amount'] ) && 0 < $data['amount'] ) {
                update_post_meta( $refund->ID, '_refund_amount', wc_format_decimal( $data['amount'] ) );
            }

            do_action( 'woocommerce_api_edit_order_refund', $refund->ID, $order_id, $this );

            return $this->get_order_refund( $order_id, $refund->ID );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Delete order refund
     *
     * @since 2.2
     * @param string $order_id order ID
     * @param string $id refund ID
     * @return WP_Error|array error or deleted message
     */
    public function delete_order_refund( $order_id, $id ) {
        try {
            $order_id = $this->validate_request( $order_id, $this->post_type, 'delete' );

            if ( is_wp_error( $order_id ) ) {
                return $order_id;
            }

            // Validate refund ID
            $id = absint( $id );

            if ( empty( $id ) ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'Invalid order refund ID.', 'woocommerce' ), 400 );
            }

            // Ensure refund ID is valid
            $refund = get_post( $id );

            if ( ! $refund ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'An order refund with the provided ID could not be found.', 'woocommerce' ), 404 );
            }

            // Ensure refund ID is associated with given order
            if ( $refund->post_parent != $order_id ) {
                throw new WC_API_Exception( 'woocommerce_api_invalid_order_refund_id', __( 'The order refund ID provided is not associated with the order.', 'woocommerce' ), 400 );
            }

            wc_delete_shop_order_transients( $order_id );

            do_action( 'woocommerce_api_delete_order_refund', $refund->ID, $order_id, $this );

            return $this->delete( $refund->ID, 'refund', true );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Bulk update or insert orders
     * Accepts an array with orders in the formats supported by
     * WC_API_Orders->create_order() and WC_API_Orders->edit_order()
     *
     * @since 2.4.0
     *
     * @param array $data
     *
     * @return array|WP_Error
     */
    public function bulk( $data ) {

        try {
            if ( ! isset( $data['orders'] ) ) {
                throw new WC_API_Exception( 'woocommerce_api_missing_orders_data', sprintf( __( 'No %1$s data specified to create/edit %1$s', 'woocommerce' ), 'orders' ), 400 );
            }

            $data  = $data['orders'];
            $limit = apply_filters( 'woocommerce_api_bulk_limit', 100, 'orders' );

            // Limit bulk operation
            if ( count( $data ) > $limit ) {
                throw new WC_API_Exception( 'woocommerce_api_orders_request_entity_too_large', sprintf( __( 'Unable to accept more than %s items for this request.', 'woocommerce' ), $limit ), 413 );
            }

            $orders = array();

            foreach ( $data as $_order ) {
                $order_id = 0;

                // Try to get the order ID
                if ( isset( $_order['id'] ) ) {
                    $order_id = intval( $_order['id'] );
                }

                // Order exists / edit order
                if ( $order_id ) {
                    $edit = $this->edit_order( $order_id, array( 'order' => $_order ) );

                    if ( is_wp_error( $edit ) ) {
                        $orders[] = array(
                            'id'    => $order_id,
                            'error' => array( 'code' => $edit->get_error_code(), 'message' => $edit->get_error_message() ),
                        );
                    } else {
                        $orders[] = $edit['order'];
                    }
                } else {
                    // Order don't exists / create order
                    $new = $this->create_order( array( 'order' => $_order ) );

                    if ( is_wp_error( $new ) ) {
                        $orders[] = array(
                            'id'    => $order_id,
                            'error' => array( 'code' => $new->get_error_code(), 'message' => $new->get_error_message() ),
                        );
                    } else {
                        $orders[] = $new['order'];
                    }
                }
            }

            return array( 'orders' => apply_filters( 'woocommerce_api_orders_bulk_response', $orders, $this ) );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => 400 ) );
        } catch ( WC_API_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }
}