woocommerce/woocommerce

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includes/rest-api/Controllers/Version1/class-wc-rest-products-v1-controller.php

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<?php
/**
 * REST API Products controller
 *
 * Handles requests to the /products endpoint.
 *
 * @author   WooThemes
 * @category API
 * @package WooCommerce\RestApi
 * @since    3.0.0
 */

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

/**
 * REST API Products controller class.
 *
 * @package WooCommerce\RestApi
 * @extends WC_REST_Posts_Controller
 */
class WC_REST_Products_V1_Controller extends WC_REST_Posts_Controller {

    /**
     * Endpoint namespace.
     *
     * @var string
     */
    protected $namespace = 'wc/v1';

    /**
     * Route base.
     *
     * @var string
     */
    protected $rest_base = 'products';

    /**
     * Post type.
     *
     * @var string
     */
    protected $post_type = 'product';

    /**
     * Initialize product actions.
     */
    public function __construct() {
        add_filter( "woocommerce_rest_{$this->post_type}_query", array( $this, 'query_args' ), 10, 2 );
        add_action( "woocommerce_rest_insert_{$this->post_type}", array( $this, 'clear_transients' ) );
    }

    /**
     * Register the routes for products.
     */
    public function register_routes() {
        register_rest_route( $this->namespace, '/' . $this->rest_base, array(
            array(
                'methods'             => WP_REST_Server::READABLE,
                'callback'            => array( $this, 'get_items' ),
                'permission_callback' => array( $this, 'get_items_permissions_check' ),
                'args'                => $this->get_collection_params(),
            ),
            array(
                'methods'             => WP_REST_Server::CREATABLE,
                'callback'            => array( $this, 'create_item' ),
                'permission_callback' => array( $this, 'create_item_permissions_check' ),
                'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ),
            ),
            'schema' => array( $this, 'get_public_item_schema' ),
        ) );

        register_rest_route( $this->namespace, '/' . $this->rest_base . '/(?P<id>[\d]+)', array(
            'args' => array(
                'id' => array(
                    'description' => __( 'Unique identifier for the resource.', 'woocommerce' ),
                    'type'        => 'integer',
                ),
            ),
            array(
                'methods'             => WP_REST_Server::READABLE,
                'callback'            => array( $this, 'get_item' ),
                'permission_callback' => array( $this, 'get_item_permissions_check' ),
                'args'                => array(
                    'context' => $this->get_context_param( array( 'default' => 'view' ) ),
                ),
            ),
            array(
                'methods'             => WP_REST_Server::EDITABLE,
                'callback'            => array( $this, 'update_item' ),
                'permission_callback' => array( $this, 'update_item_permissions_check' ),
                'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
            ),
            array(
                'methods'             => WP_REST_Server::DELETABLE,
                'callback'            => array( $this, 'delete_item' ),
                'permission_callback' => array( $this, 'delete_item_permissions_check' ),
                'args'                => array(
                    'force' => array(
                        'default'     => false,
                        'description' => __( 'Whether to bypass trash and force deletion.', 'woocommerce' ),
                        'type'        => 'boolean',
                    ),
                ),
            ),
            'schema' => array( $this, 'get_public_item_schema' ),
        ) );

        register_rest_route( $this->namespace, '/' . $this->rest_base . '/batch', array(
            array(
                'methods'             => WP_REST_Server::EDITABLE,
                'callback'            => array( $this, 'batch_items' ),
                'permission_callback' => array( $this, 'batch_items_permissions_check' ),
                'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
            ),
            'schema' => array( $this, 'get_public_batch_schema' ),
        ) );
    }

    /**
     * Get post types.
     *
     * @return array
     */
    protected function get_post_types() {
        return array( 'product', 'product_variation' );
    }

    /**
     * Query args.
     *
     * @param array           $args    Request args.
     * @param WP_REST_Request $request Request data.
     * @return array
     */
    public function query_args( $args, $request ) {
        // Set post_status.
        $args['post_status'] = $request['status'];

        // Taxonomy query to filter products by type, category,
        // tag, shipping class, and attribute.
        $tax_query = array();

        // Map between taxonomy name and arg's key.
        $taxonomies = array(
            'product_cat'            => 'category',
            'product_tag'            => 'tag',
            'product_shipping_class' => 'shipping_class',
        );

        // Set tax_query for each passed arg.
        foreach ( $taxonomies as $taxonomy => $key ) {
            if ( ! empty( $request[ $key ] ) && is_array( $request[ $key ] ) ) {
                $request[ $key ] = array_filter( $request[ $key ] );
            }

            if ( ! empty( $request[ $key ] ) ) {
                $tax_query[] = array(
                    'taxonomy' => $taxonomy,
                    'field'    => 'term_id',
                    'terms'    => $request[ $key ],
                );
            }
        }

        // Filter product type by slug.
        if ( ! empty( $request['type'] ) ) {
            $tax_query[] = array(
                'taxonomy' => 'product_type',
                'field'    => 'slug',
                'terms'    => $request['type'],
            );
        }

        // Filter by attribute and term.
        if ( ! empty( $request['attribute'] ) && ! empty( $request['attribute_term'] ) ) {
            if ( in_array( $request['attribute'], wc_get_attribute_taxonomy_names(), true ) ) {
                $tax_query[] = array(
                    'taxonomy' => $request['attribute'],
                    'field'    => 'term_id',
                    'terms'    => $request['attribute_term'],
                );
            }
        }

        if ( ! empty( $tax_query ) ) {
            $args['tax_query'] = $tax_query;
        }

        // Filter by sku.
        if ( ! empty( $request['sku'] ) ) {
            $skus = explode( ',', $request['sku'] );
            // Include the current string as a SKU too.
            if ( 1 < count( $skus ) ) {
                $skus[] = $request['sku'];
            }

            $args['meta_query'] = $this->add_meta_query( $args, array(
                'key'     => '_sku',
                'value'   => $skus,
                'compare' => 'IN',
            ) );
        }

        // Apply all WP_Query filters again.
        if ( is_array( $request['filter'] ) ) {
            $args = array_merge( $args, $request['filter'] );
            unset( $args['filter'] );
        }

        // Force the post_type argument, since it's not a user input variable.
        if ( ! empty( $request['sku'] ) ) {
            $args['post_type'] = array( 'product', 'product_variation' );
        } else {
            $args['post_type'] = $this->post_type;
        }

        return $args;
    }

    /**
     * Get the downloads for a product or product variation.
     *
     * @param WC_Product|WC_Product_Variation $product Product instance.
     * @return array
     */
    protected function get_downloads( $product ) {
        $downloads = array();

        if ( $product->is_downloadable() ) {
            foreach ( $product->get_downloads() as $file_id => $file ) {
                $downloads[] = array(
                    'id'   => $file_id, // MD5 hash.
                    'name' => $file['name'],
                    'file' => $file['file'],
                );
            }
        }

        return $downloads;
    }

    /**
     * Get taxonomy terms.
     *
     * @param WC_Product $product  Product instance.
     * @param string     $taxonomy Taxonomy slug.
     * @return array
     */
    protected function get_taxonomy_terms( $product, $taxonomy = 'cat' ) {
        $terms = array();

        foreach ( wc_get_object_terms( $product->get_id(), 'product_' . $taxonomy ) as $term ) {
            $terms[] = array(
                'id'   => $term->term_id,
                'name' => $term->name,
                'slug' => $term->slug,
            );
        }

        return $terms;
    }

    /**
     * Get the images for a product or product variation.
     *
     * @param WC_Product|WC_Product_Variation $product Product instance.
     * @return array
     */
    protected function get_images( $product ) {
        $images = array();
        $attachment_ids = array();

        // Add featured image.
        if ( $product->get_image_id() ) {
            $attachment_ids[] = $product->get_image_id();
        }

        // Add gallery images.
        $attachment_ids = array_merge( $attachment_ids, $product->get_gallery_image_ids() );

        // Build image data.
        foreach ( $attachment_ids as $position => $attachment_id ) {
            $attachment_post = get_post( $attachment_id );
            if ( is_null( $attachment_post ) ) {
                continue;
            }

            $attachment = wp_get_attachment_image_src( $attachment_id, 'full' );
            if ( ! is_array( $attachment ) ) {
                continue;
            }

            $images[] = array(
                'id'            => (int) $attachment_id,
                'date_created'  => wc_rest_prepare_date_response( $attachment_post->post_date_gmt ),
                'date_modified' => wc_rest_prepare_date_response( $attachment_post->post_modified_gmt ),
                'src'           => current( $attachment ),
                'name'          => get_the_title( $attachment_id ),
                'alt'           => get_post_meta( $attachment_id, '_wp_attachment_image_alt', true ),
                'position'      => (int) $position,
            );
        }

        // Set a placeholder image if the product has no images set.
        if ( empty( $images ) ) {
            $images[] = array(
                'id'            => 0,
                'date_created'  => wc_rest_prepare_date_response( current_time( 'mysql' ) ), // Default to now.
                'date_modified' => wc_rest_prepare_date_response( current_time( 'mysql' ) ),
                'src'           => wc_placeholder_img_src(),
                'name'          => __( 'Placeholder', 'woocommerce' ),
                'alt'           => __( 'Placeholder', 'woocommerce' ),
                'position'      => 0,
            );
        }

        return $images;
    }

    /**
     * Get attribute taxonomy label.
     *
     * @param  string $name Taxonomy name.
     * @return string
     */
    protected function get_attribute_taxonomy_label( $name ) {
        $tax    = get_taxonomy( $name );
        $labels = get_taxonomy_labels( $tax );

        return $labels->singular_name;
    }

    /**
     * Get default attributes.
     *
     * @param WC_Product $product Product instance.
     * @return array
     */
    protected function get_default_attributes( $product ) {
        $default = array();

        if ( $product->is_type( 'variable' ) ) {
            foreach ( array_filter( (array) $product->get_default_attributes(), 'strlen' ) as $key => $value ) {
                if ( 0 === strpos( $key, 'pa_' ) ) {
                    $default[] = array(
                        'id'     => wc_attribute_taxonomy_id_by_name( $key ),
                        'name'   => $this->get_attribute_taxonomy_label( $key ),
                        'option' => $value,
                    );
                } else {
                    $default[] = array(
                        'id'     => 0,
                        'name'   => wc_attribute_taxonomy_slug( $key ),
                        'option' => $value,
                    );
                }
            }
        }

        return $default;
    }

    /**
     * Get attribute options.
     *
     * @param int   $product_id Product ID.
     * @param array $attribute  Attribute data.
     * @return array
     */
    protected function get_attribute_options( $product_id, $attribute ) {
        if ( isset( $attribute['is_taxonomy'] ) && $attribute['is_taxonomy'] ) {
            return wc_get_product_terms( $product_id, $attribute['name'], array( 'fields' => 'names' ) );
        } elseif ( isset( $attribute['value'] ) ) {
            return array_map( 'trim', explode( '|', $attribute['value'] ) );
        }

        return array();
    }

    /**
     * Get the attributes for a product or product variation.
     *
     * @param WC_Product|WC_Product_Variation $product Product instance.
     * @return array
     */
    protected function get_attributes( $product ) {
        $attributes = array();

        if ( $product->is_type( 'variation' ) ) {
            // Variation attributes.
            foreach ( $product->get_variation_attributes() as $attribute_name => $attribute ) {
                $name = str_replace( 'attribute_', '', $attribute_name );

                if ( ! $attribute ) {
                    continue;
                }

                // Taxonomy-based attributes are prefixed with `pa_`, otherwise simply `attribute_`.
                if ( 0 === strpos( $attribute_name, 'attribute_pa_' ) ) {
                    $option_term = get_term_by( 'slug', $attribute, $name );
                    $attributes[] = array(
                        'id'     => wc_attribute_taxonomy_id_by_name( $name ),
                        'name'   => $this->get_attribute_taxonomy_label( $name ),
                        'option' => $option_term && ! is_wp_error( $option_term ) ? $option_term->name : $attribute,
                    );
                } else {
                    $attributes[] = array(
                        'id'     => 0,
                        'name'   => $name,
                        'option' => $attribute,
                    );
                }
            }
        } else {
            foreach ( $product->get_attributes() as $attribute ) {
                if ( $attribute['is_taxonomy'] ) {
                    $attributes[] = array(
                        'id'        => wc_attribute_taxonomy_id_by_name( $attribute['name'] ),
                        'name'      => $this->get_attribute_taxonomy_label( $attribute['name'] ),
                        'position'  => (int) $attribute['position'],
                        'visible'   => (bool) $attribute['is_visible'],
                        'variation' => (bool) $attribute['is_variation'],
                        'options'   => $this->get_attribute_options( $product->get_id(), $attribute ),
                    );
                } else {
                    $attributes[] = array(
                        'id'        => 0,
                        'name'      => $attribute['name'],
                        'position'  => (int) $attribute['position'],
                        'visible'   => (bool) $attribute['is_visible'],
                        'variation' => (bool) $attribute['is_variation'],
                        'options'   => $this->get_attribute_options( $product->get_id(), $attribute ),
                    );
                }
            }
        }

        return $attributes;
    }

    /**
     * Get product menu order.
     *
     * @deprecated 3.0.0
     * @param WC_Product $product Product instance.
     * @return int
     */
    protected function get_product_menu_order( $product ) {
        return $product->get_menu_order();
    }

    /**
     * Get product data.
     *
     * @param WC_Product $product Product instance.
     * @return array
     */
    protected function get_product_data( $product ) {
        $data = array(
            'id'                    => $product->get_id(),
            'name'                  => $product->get_name(),
            'slug'                  => $product->get_slug(),
            'permalink'             => $product->get_permalink(),
            'date_created'          => wc_rest_prepare_date_response( $product->get_date_created() ),
            'date_modified'         => wc_rest_prepare_date_response( $product->get_date_modified() ),
            'type'                  => $product->get_type(),
            'status'                => $product->get_status(),
            'featured'              => $product->is_featured(),
            'catalog_visibility'    => $product->get_catalog_visibility(),
            'description'           => wpautop( do_shortcode( $product->get_description() ) ),
            'short_description'     => apply_filters( 'woocommerce_short_description', $product->get_short_description() ),
            'sku'                   => $product->get_sku(),
            'price'                 => $product->get_price(),
            'regular_price'         => $product->get_regular_price(),
            'sale_price'            => $product->get_sale_price() ? $product->get_sale_price() : '',
            'date_on_sale_from'     => $product->get_date_on_sale_from() ? date( 'Y-m-d', $product->get_date_on_sale_from()->getTimestamp() ) : '',
            'date_on_sale_to'       => $product->get_date_on_sale_to() ? date( 'Y-m-d', $product->get_date_on_sale_to()->getTimestamp() ) : '',
            'price_html'            => $product->get_price_html(),
            'on_sale'               => $product->is_on_sale(),
            'purchasable'           => $product->is_purchasable(),
            'total_sales'           => $product->get_total_sales(),
            'virtual'               => $product->is_virtual(),
            'downloadable'          => $product->is_downloadable(),
            'downloads'             => $this->get_downloads( $product ),
            'download_limit'        => $product->get_download_limit(),
            'download_expiry'       => $product->get_download_expiry(),
            'download_type'         => 'standard',
            'external_url'          => $product->is_type( 'external' ) ? $product->get_product_url() : '',
            'button_text'           => $product->is_type( 'external' ) ? $product->get_button_text() : '',
            'tax_status'            => $product->get_tax_status(),
            'tax_class'             => $product->get_tax_class(),
            'manage_stock'          => $product->managing_stock(),
            'stock_quantity'        => $product->get_stock_quantity(),
            'in_stock'              => $product->is_in_stock(),
            'backorders'            => $product->get_backorders(),
            'backorders_allowed'    => $product->backorders_allowed(),
            'backordered'           => $product->is_on_backorder(),
            'sold_individually'     => $product->is_sold_individually(),
            'weight'                => $product->get_weight(),
            'dimensions'            => array(
                'length' => $product->get_length(),
                'width'  => $product->get_width(),
                'height' => $product->get_height(),
            ),
            'shipping_required'     => $product->needs_shipping(),
            'shipping_taxable'      => $product->is_shipping_taxable(),
            'shipping_class'        => $product->get_shipping_class(),
            'shipping_class_id'     => $product->get_shipping_class_id(),
            'reviews_allowed'       => $product->get_reviews_allowed(),
            'average_rating'        => wc_format_decimal( $product->get_average_rating(), 2 ),
            'rating_count'          => $product->get_rating_count(),
            'related_ids'           => array_map( 'absint', array_values( wc_get_related_products( $product->get_id() ) ) ),
            'upsell_ids'            => array_map( 'absint', $product->get_upsell_ids() ),
            'cross_sell_ids'        => array_map( 'absint', $product->get_cross_sell_ids() ),
            'parent_id'             => $product->get_parent_id(),
            'purchase_note'         => wpautop( do_shortcode( wp_kses_post( $product->get_purchase_note() ) ) ),
            'categories'            => $this->get_taxonomy_terms( $product ),
            'tags'                  => $this->get_taxonomy_terms( $product, 'tag' ),
            'images'                => $this->get_images( $product ),
            'attributes'            => $this->get_attributes( $product ),
            'default_attributes'    => $this->get_default_attributes( $product ),
            'variations'            => array(),
            'grouped_products'      => array(),
            'menu_order'            => $product->get_menu_order(),
        );

        return $data;
    }

    /**
     * Get an individual variation's data.
     *
     * @param WC_Product $product Product instance.
     * @return array
     */
    protected function get_variation_data( $product ) {
        $variations = array();

        foreach ( $product->get_children() as $child_id ) {
            $variation = wc_get_product( $child_id );
            if ( ! $variation || ! $variation->exists() ) {
                continue;
            }

            $variations[] = array(
                'id'                 => $variation->get_id(),
                'date_created'       => wc_rest_prepare_date_response( $variation->get_date_created() ),
                'date_modified'      => wc_rest_prepare_date_response( $variation->get_date_modified() ),
                'permalink'          => $variation->get_permalink(),
                'sku'                => $variation->get_sku(),
                'price'              => $variation->get_price(),
                'regular_price'      => $variation->get_regular_price(),
                'sale_price'         => $variation->get_sale_price(),
                'date_on_sale_from'  => $variation->get_date_on_sale_from() ? date( 'Y-m-d', $variation->get_date_on_sale_from()->getTimestamp() ) : '',
                'date_on_sale_to'    => $variation->get_date_on_sale_to() ? date( 'Y-m-d', $variation->get_date_on_sale_to()->getTimestamp() ) : '',
                'on_sale'            => $variation->is_on_sale(),
                'purchasable'        => $variation->is_purchasable(),
                'visible'            => $variation->is_visible(),
                'virtual'            => $variation->is_virtual(),
                'downloadable'       => $variation->is_downloadable(),
                'downloads'          => $this->get_downloads( $variation ),
                'download_limit'     => '' !== $variation->get_download_limit() ? (int) $variation->get_download_limit() : -1,
                'download_expiry'    => '' !== $variation->get_download_expiry() ? (int) $variation->get_download_expiry() : -1,
                'tax_status'         => $variation->get_tax_status(),
                'tax_class'          => $variation->get_tax_class(),
                'manage_stock'       => $variation->managing_stock(),
                'stock_quantity'     => $variation->get_stock_quantity(),
                'in_stock'           => $variation->is_in_stock(),
                'backorders'         => $variation->get_backorders(),
                'backorders_allowed' => $variation->backorders_allowed(),
                'backordered'        => $variation->is_on_backorder(),
                'weight'             => $variation->get_weight(),
                'dimensions'         => array(
                    'length' => $variation->get_length(),
                    'width'  => $variation->get_width(),
                    'height' => $variation->get_height(),
                ),
                'shipping_class'     => $variation->get_shipping_class(),
                'shipping_class_id'  => $variation->get_shipping_class_id(),
                'image'              => $this->get_images( $variation ),
                'attributes'         => $this->get_attributes( $variation ),
            );
        }

        return $variations;
    }

    /**
     * Prepare a single product output for response.
     *
     * @param WP_Post         $post    Post object.
     * @param WP_REST_Request $request Request object.
     * @return WP_REST_Response
     */
    public function prepare_item_for_response( $post, $request ) {
        $product = wc_get_product( $post );
        $data    = $this->get_product_data( $product );

        // Add variations to variable products.
        if ( $product->is_type( 'variable' ) && $product->has_child() ) {
            $data['variations'] = $this->get_variation_data( $product );
        }

        // Add grouped products data.
        if ( $product->is_type( 'grouped' ) && $product->has_child() ) {
            $data['grouped_products'] = $product->get_children();
        }

        $context = ! empty( $request['context'] ) ? $request['context'] : 'view';
        $data    = $this->add_additional_fields_to_object( $data, $request );
        $data    = $this->filter_response_by_context( $data, $context );

        // Wrap the data in a response object.
        $response = rest_ensure_response( $data );

        $response->add_links( $this->prepare_links( $product, $request ) );

        /**
         * Filter the data for a response.
         *
         * The dynamic portion of the hook name, $this->post_type, refers to post_type of the post being
         * prepared for the response.
         *
         * @param WP_REST_Response   $response   The response object.
         * @param WP_Post            $post       Post object.
         * @param WP_REST_Request    $request    Request object.
         */
        return apply_filters( "woocommerce_rest_prepare_{$this->post_type}", $response, $post, $request );
    }

    /**
     * Prepare links for the request.
     *
     * @param WC_Product      $product Product object.
     * @param WP_REST_Request $request Request object.
     * @return array Links for the given product.
     */
    protected function prepare_links( $product, $request ) {
        $links = array(
            'self' => array(
                'href' => rest_url( sprintf( '/%s/%s/%d', $this->namespace, $this->rest_base, $product->get_id() ) ),
            ),
            'collection' => array(
                'href' => rest_url( sprintf( '/%s/%s', $this->namespace, $this->rest_base ) ),
            ),
        );

        if ( $product->get_parent_id() ) {
            $links['up'] = array(
                'href' => rest_url( sprintf( '/%s/products/%d', $this->namespace, $product->get_parent_id() ) ),
            );
        }

        return $links;
    }

    /**
     * Prepare a single product for create or update.
     *
     * @param WP_REST_Request $request Request object.
     * @return WP_Error|stdClass $data Post object.
     */
    protected function prepare_item_for_database( $request ) {
        $id = isset( $request['id'] ) ? absint( $request['id'] ) : 0;

        // Type is the most important part here because we need to be using the correct class and methods.
        if ( isset( $request['type'] ) ) {
            $classname = WC_Product_Factory::get_classname_from_product_type( $request['type'] );

            if ( ! class_exists( $classname ) ) {
                $classname = 'WC_Product_Simple';
            }

            $product = new $classname( $id );
        } elseif ( isset( $request['id'] ) ) {
            $product = wc_get_product( $id );
        } else {
            $product = new WC_Product_Simple();
        }

        // Post title.
        if ( isset( $request['name'] ) ) {
            $product->set_name( wp_filter_post_kses( $request['name'] ) );
        }

        // Post content.
        if ( isset( $request['description'] ) ) {
            $product->set_description( wp_filter_post_kses( $request['description'] ) );
        }

        // Post excerpt.
        if ( isset( $request['short_description'] ) ) {
            $product->set_short_description( wp_filter_post_kses( $request['short_description'] ) );
        }

        // Post status.
        if ( isset( $request['status'] ) ) {
            $product->set_status( get_post_status_object( $request['status'] ) ? $request['status'] : 'draft' );
        }

        // Post slug.
        if ( isset( $request['slug'] ) ) {
            $product->set_slug( $request['slug'] );
        }

        // Menu order.
        if ( isset( $request['menu_order'] ) ) {
            $product->set_menu_order( $request['menu_order'] );
        }

        // Comment status.
        if ( isset( $request['reviews_allowed'] ) ) {
            $product->set_reviews_allowed( $request['reviews_allowed'] );
        }

        /**
         * Filter the query_vars used in `get_items` for the constructed query.
         *
         * The dynamic portion of the hook name, $this->post_type, refers to post_type of the post being
         * prepared for insertion.
         *
         * @param WC_Product       $product An object representing a single item prepared
         *                                       for inserting or updating the database.
         * @param WP_REST_Request $request       Request object.
         */
        return apply_filters( "woocommerce_rest_pre_insert_{$this->post_type}", $product, $request );
    }

    /**
     * Create a single product.
     *
     * @param WP_REST_Request $request Full details about the request.
     * @return WP_Error|WP_REST_Response
     */
    public function create_item( $request ) {
        if ( ! empty( $request['id'] ) ) {
            return new WP_Error( "woocommerce_rest_{$this->post_type}_exists", sprintf( __( 'Cannot create existing %s.', 'woocommerce' ), $this->post_type ), array( 'status' => 400 ) );
        }

        $product_id = 0;

        try {
            $product_id = $this->save_product( $request );
            $post       = get_post( $product_id );
            $this->update_additional_fields_for_object( $post, $request );
            $this->update_post_meta_fields( $post, $request );

            /**
             * Fires after a single item is created or updated via the REST API.
             *
             * @param WP_Post         $post      Post data.
             * @param WP_REST_Request $request   Request object.
             * @param boolean         $creating  True when creating item, false when updating.
             */
            do_action( 'woocommerce_rest_insert_product', $post, $request, true );
            $request->set_param( 'context', 'edit' );
            $response = $this->prepare_item_for_response( $post, $request );
            $response = rest_ensure_response( $response );
            $response->set_status( 201 );
            $response->header( 'Location', rest_url( sprintf( '/%s/%s/%d', $this->namespace, $this->rest_base, $post->ID ) ) );

            return $response;
        } catch ( WC_Data_Exception $e ) {
            $this->delete_post( $product_id );
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), $e->getErrorData() );
        } catch ( WC_REST_Exception $e ) {
            $this->delete_post( $product_id );
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Update a single product.
     *
     * @param WP_REST_Request $request Full details about the request.
     * @return WP_Error|WP_REST_Response
     */
    public function update_item( $request ) {
        $post_id = (int) $request['id'];

        if ( empty( $post_id ) || get_post_type( $post_id ) !== $this->post_type ) {
            return new WP_Error( "woocommerce_rest_{$this->post_type}_invalid_id", __( 'ID is invalid.', 'woocommerce' ), array( 'status' => 400 ) );
        }

        try {
            $product_id = $this->save_product( $request );
            $post       = get_post( $product_id );
            $this->update_additional_fields_for_object( $post, $request );
            $this->update_post_meta_fields( $post, $request );

            /**
             * Fires after a single item is created or updated via the REST API.
             *
             * @param WP_Post         $post      Post data.
             * @param WP_REST_Request $request   Request object.
             * @param boolean         $creating  True when creating item, false when updating.
             */
            do_action( 'woocommerce_rest_insert_product', $post, $request, false );
            $request->set_param( 'context', 'edit' );
            $response = $this->prepare_item_for_response( $post, $request );

            return rest_ensure_response( $response );
        } catch ( WC_Data_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), $e->getErrorData() );
        } catch ( WC_REST_Exception $e ) {
            return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
        }
    }

    /**
     * Saves a product to the database.
     *
     * @param WP_REST_Request $request Full details about the request.
     * @return int
     */
    public function save_product( $request ) {
        $product = $this->prepare_item_for_database( $request );
        return $product->save();
    }

    /**
     * Save product images.
     *
     * @deprecated 3.0.0
     * @param int $product_id
     * @param array $images
     * @throws WC_REST_Exception
     */
    protected function save_product_images( $product_id, $images ) {
        $product = wc_get_product( $product_id );

        return set_product_images( $product, $images );
    }

    /**
     * Set product images.
     *
     * @throws WC_REST_Exception REST API exceptions.
     * @param WC_Product $product Product instance.
     * @param array      $images  Images data.
     * @return WC_Product
     */
    protected function set_product_images( $product, $images ) {
        if ( is_array( $images ) ) {
            $gallery = array();

            foreach ( $images as $image ) {
                $attachment_id = isset( $image['id'] ) ? absint( $image['id'] ) : 0;

                if ( 0 === $attachment_id && isset( $image['src'] ) ) {
                    $upload = wc_rest_upload_image_from_url( esc_url_raw( $image['src'] ) );

                    if ( is_wp_error( $upload ) ) {
                        if ( ! apply_filters( 'woocommerce_rest_suppress_image_upload_error', false, $upload, $product->get_id(), $images ) ) {
                            throw new WC_REST_Exception( 'woocommerce_product_image_upload_error', $upload->get_error_message(), 400 );
                        } else {
                            continue;
                        }
                    }

                    $attachment_id = wc_rest_set_uploaded_image_as_attachment( $upload, $product->get_id() );
                }

                if ( ! wp_attachment_is_image( $attachment_id ) ) {
                    throw new WC_REST_Exception( 'woocommerce_product_invalid_image_id', sprintf( __( '#%s is an invalid image ID.', 'woocommerce' ), $attachment_id ), 400 );
                }

                if ( isset( $image['position'] ) && 0 === absint( $image['position'] ) ) {
                    $product->set_image_id( $attachment_id );
                } else {
                    $gallery[] = $attachment_id;
                }

                // Set the image alt if present.
                if ( ! empty( $image['alt'] ) ) {
                    update_post_meta( $attachment_id, '_wp_attachment_image_alt', wc_clean( $image['alt'] ) );
                }

                // Set the image name if present.
                if ( ! empty( $image['name'] ) ) {
                    wp_update_post( array( 'ID' => $attachment_id, 'post_title' => $image['name'] ) );
                }
            }

            if ( ! empty( $gallery ) ) {
                $product->set_gallery_image_ids( $gallery );
            }
        } else {
            $product->set_image_id( '' );
            $product->set_gallery_image_ids( array() );
        }

        return $product;
    }

    /**
     * Save product shipping data.
     *
     * @param WC_Product $product Product instance.
     * @param array      $data    Shipping data.
     * @return WC_Product
     */
    protected function save_product_shipping_data( $product, $data ) {
        // Virtual.
        if ( isset( $data['virtual'] ) && true === $data['virtual'] ) {
            $product->set_weight( '' );
            $product->set_height( '' );
            $product->set_length( '' );
            $product->set_width( '' );
        } else {
            if ( isset( $data['weight'] ) ) {
                $product->set_weight( $data['weight'] );
            }

            // Height.
            if ( isset( $data['dimensions']['height'] ) ) {
                $product->set_height( $data['dimensions']['height'] );
            }

            // Width.
            if ( isset( $data['dimensions']['width'] ) ) {
                $product->set_width( $data['dimensions']['width'] );
            }

            // Length.
            if ( isset( $data['dimensions']['length'] ) ) {
                $product->set_length( $data['dimensions']['length'] );
            }
        }

        // Shipping class.
        if ( isset( $data['shipping_class'] ) ) {
            $data_store        = $product->get_data_store();
            $shipping_class_id = $data_store->get_shipping_class_id_by_slug( wc_clean( $data['shipping_class'] ) );
            $product->set_shipping_class_id( $shipping_class_id );
        }

        return $product;
    }

    /**
     * Save downloadable files.
     *
     * @param WC_Product $product    Product instance.
     * @param array      $downloads  Downloads data.
     * @param int        $deprecated Deprecated since 3.0.
     * @return WC_Product
     */
    protected function save_downloadable_files( $product, $downloads, $deprecated = 0 ) {
        if ( $deprecated ) {
            wc_deprecated_argument( 'variation_id', '3.0', 'save_downloadable_files() not requires a variation_id anymore.' );
        }

        $files = array();
        foreach ( $downloads as $key => $file ) {
            if ( empty( $file['file'] ) ) {
                continue;
            }

            $download = new WC_Product_Download();
            $download->set_id( ! empty( $file['id'] ) ? $file['id'] : wp_generate_uuid4() );
            $download->set_name( $file['name'] ? $file['name'] : wc_get_filename_from_url( $file['file'] ) );
            $download->set_file( apply_filters( 'woocommerce_file_download_path', $file['file'], $product, $key ) );
            $files[]  = $download;
        }
        $product->set_downloads( $files );

        return $product;
    }

    /**
     * Save taxonomy terms.
     *
     * @param WC_Product $product  Product instance.
     * @param array      $terms    Terms data.
     * @param string     $taxonomy Taxonomy name.
     * @return WC_Product
     */
    protected function save_taxonomy_terms( $product, $terms, $taxonomy = 'cat' ) {
        $term_ids = wp_list_pluck( $terms, 'id' );

        if ( 'cat' === $taxonomy ) {
            $product->set_category_ids( $term_ids );
        } elseif ( 'tag' === $taxonomy ) {
            $product->set_tag_ids( $term_ids );
        }

        return $product;
    }

    /**
     * Save default attributes.
     *
     * @since 3.0.0
     *
     * @param WC_Product      $product Product instance.
     * @param WP_REST_Request $request Request data.
     * @return WC_Product
     */
    protected function save_default_attributes( $product, $request ) {
        if ( isset( $request['default_attributes'] ) && is_array( $request['default_attributes'] ) ) {
            $attributes         = $product->get_attributes();
            $default_attributes = array();

            foreach ( $request['default_attributes'] as $attribute ) {
                $attribute_id   = 0;
                $attribute_name = '';

                // Check ID for global attributes or name for product attributes.
                if ( ! empty( $attribute['id'] ) ) {
                    $attribute_id   = absint( $attribute['id'] );
                    $attribute_name = wc_attribute_taxonomy_name_by_id( $attribute_id );
                } elseif ( ! empty( $attribute['name'] ) ) {
                    $attribute_name = sanitize_title( $attribute['name'] );
                }

                if ( ! $attribute_id && ! $attribute_name ) {
                    continue;
                }

                if ( isset( $attributes[ $attribute_name ] ) ) {
                    $_attribute = $attributes[ $attribute_name ];

                    if ( $_attribute['is_variation'] ) {
                        $value = isset( $attribute['option'] ) ? wc_clean( stripslashes( $attribute['option'] ) ) : '';

                        if ( ! empty( $_attribute['is_taxonomy'] ) ) {
                            // If dealing with a taxonomy, we need to get the slug from the name posted to the API.
                            $term = get_term_by( 'name', $value, $attribute_name );

                            if ( $term && ! is_wp_error( $term ) ) {
                                $value = $term->slug;
                            } else {
                                $value = sanitize_title( $value );
                            }
                        }

                        if ( $value ) {
                            $default_attributes[ $attribute_name ] = $value;
                        }
                    }
                }
            }

            $product->set_default_attributes( $default_attributes );
        }

        return $product;
    }

    /**
     * Save product meta.
     *
     * @deprecated 3.0.0
     * @param WC_Product $product
     * @param WP_REST_Request $request
     * @return bool
     * @throws WC_REST_Exception
     */
    protected function save_product_meta( $product, $request ) {
        $product = $this->set_product_meta( $product, $request );
        $product->save();

        return true;
    }

    /**
     * Set product meta.
     *
     * @throws WC_REST_Exception REST API exceptions.
     * @param WC_Product      $product Product instance.
     * @param WP_REST_Request $request Request data.
     * @return WC_Product
     */
    protected function set_product_meta( $product, $request ) {
        // Virtual.
        if ( isset( $request['virtual'] ) ) {
            $product->set_virtual( $request['virtual'] );
        }

        // Tax status.
        if ( isset( $request['tax_status'] ) ) {
            $product->set_tax_status( $request['tax_status'] );
        }

        // Tax Class.
        if ( isset( $request['tax_class'] ) ) {
            $product->set_tax_class( $request['tax_class'] );
        }

        // Catalog Visibility.
        if ( isset( $request['catalog_visibility'] ) ) {
            $product->set_catalog_visibility( $request['catalog_visibility'] );
        }

        // Purchase Note.
        if ( isset( $request['purchase_note'] ) ) {
            $product->set_purchase_note( wp_kses_post( wp_unslash( $request['purchase_note'] ) ) );
        }

        // Featured Product.
        if ( isset( $request['featured'] ) ) {
            $product->set_featured( $request['featured'] );
        }

        // Shipping data.
        $product = $this->save_product_shipping_data( $product, $request );

        // SKU.
        if ( isset( $request['sku'] ) ) {
            $product->set_sku( wc_clean( $request['sku'] ) );
        }

        // Attributes.
        if ( isset( $request['attributes'] ) ) {
            $attributes = array();

            foreach ( $request['attributes'] as $attribute ) {
                $attribute_id   = 0;
                $attribute_name = '';

                // Check ID for global attributes or name for product attributes.
                if ( ! empty( $attribute['id'] ) ) {
                    $attribute_id   = absint( $attribute['id'] );
                    $attribute_name = wc_attribute_taxonomy_name_by_id( $attribute_id );
                } elseif ( ! empty( $attribute['name'] ) ) {
                    $attribute_name = wc_clean( $attribute['name'] );
                }

                if ( ! $attribute_id && ! $attribute_name ) {
                    continue;
                }

                if ( $attribute_id ) {

                    if ( isset( $attribute['options'] ) ) {
                        $options = $attribute['options'];

                        if ( ! is_array( $attribute['options'] ) ) {
                            // Text based attributes - Posted values are term names.
                            $options = explode( WC_DELIMITER, $options );
                        }

                        $values = array_map( 'wc_sanitize_term_text_based', $options );
                        $values = array_filter( $values, 'strlen' );
                    } else {
                        $values = array();
                    }

                    if ( ! empty( $values ) ) {
                        // Add attribute to array, but don't set values.
                        $attribute_object = new WC_Product_Attribute();
                        $attribute_object->set_id( $attribute_id );
                        $attribute_object->set_name( $attribute_name );
                        $attribute_object->set_options( $values );
                        $attribute_object->set_position( isset( $attribute['position'] ) ? (string) absint( $attribute['position'] ) : '0' );
                        $attribute_object->set_visible( ( isset( $attribute['visible'] ) && $attribute['visible'] ) ? 1 : 0 );
                        $attribute_object->set_variation( ( isset( $attribute['variation'] ) && $attribute['variation'] ) ? 1 : 0 );
                        $attributes[] = $attribute_object;
                    }
                } elseif ( isset( $attribute['options'] ) ) {
                    // Custom attribute - Add attribute to array and set the values.
                    if ( is_array( $attribute['options'] ) ) {
                        $values = $attribute['options'];
                    } else {
                        $values = explode( WC_DELIMITER, $attribute['options'] );
                    }
                    $attribute_object = new WC_Product_Attribute();
                    $attribute_object->set_name( $attribute_name );
                    $attribute_object->set_options( $values );
                    $attribute_object->set_position( isset( $attribute['position'] ) ? (string) absint( $attribute['position'] ) : '0' );
                    $attribute_object->set_visible( ( isset( $attribute['visible'] ) && $attribute['visible'] ) ? 1 : 0 );
                    $attribute_object->set_variation( ( isset( $attribute['variation'] ) && $attribute['variation'] ) ? 1 : 0 );
                    $attributes[] = $attribute_object;
                }
            }
            $product->set_attributes( $attributes );
        }

        // Sales and prices.
        if ( in_array( $product->get_type(), array( 'variable', 'grouped' ), true ) ) {
            $product->set_regular_price( '' );
            $product->set_sale_price( '' );
            $product->set_date_on_sale_to( '' );
            $product->set_date_on_sale_from( '' );
            $product->set_price( '' );
        } else {
            // Regular Price.
            if ( isset( $request['regular_price'] ) ) {
                $product->set_regular_price( $request['regular_price'] );
            }

            // Sale Price.
            if ( isset( $request['sale_price'] ) ) {
                $product->set_sale_price( $request['sale_price'] );
            }

            if ( isset( $request['date_on_sale_from'] ) ) {
                $product->set_date_on_sale_from( $request['date_on_sale_from'] );
            }

            if ( isset( $request['date_on_sale_to'] ) ) {
                $product->set_date_on_sale_to( $request['date_on_sale_to'] );
            }
        }

        // Product parent ID for groups.
        if ( isset( $request['parent_id'] ) ) {
            $product->set_parent_id( $request['parent_id'] );
        }

        // Sold individually.
        if ( isset( $request['sold_individually'] ) ) {
            $product->set_sold_individually( $request['sold_individually'] );
        }

        // Stock status.
        if ( isset( $request['in_stock'] ) ) {
            $stock_status = true === $request['in_stock'] ? 'instock' : 'outofstock';
        } else {
            $stock_status = $product->get_stock_status();
        }

        // Stock data.
        if ( 'yes' === get_option( 'woocommerce_manage_stock' ) ) {
            // Manage stock.
            if ( isset( $request['manage_stock'] ) ) {
                $product->set_manage_stock( $request['manage_stock'] );
            }

            // Backorders.
            if ( isset( $request['backorders'] ) ) {
                $product->set_backorders( $request['backorders'] );
            }

            if ( $product->is_type( 'grouped' ) ) {
                $product->set_manage_stock( 'no' );
                $product->set_backorders( 'no' );
                $product->set_stock_quantity( '' );
                $product->set_stock_status( $stock_status );
            } elseif ( $product->is_type( 'external' ) ) {
                $product->set_manage_stock( 'no' );
                $product->set_backorders( 'no' );
                $product->set_stock_quantity( '' );
                $product->set_stock_status( 'instock' );
            } elseif ( $product->get_manage_stock() ) {
                // Stock status is always determined by children so sync later.
                if ( ! $product->is_type( 'variable' ) ) {
                    $product->set_stock_status( $stock_status );
                }

                // Stock quantity.
                if ( isset( $request['stock_quantity'] ) ) {
                    $product->set_stock_quantity( wc_stock_amount( $request['stock_quantity'] ) );
                } elseif ( isset( $request['inventory_delta'] ) ) {
                    $stock_quantity  = wc_stock_amount( $product->get_stock_quantity() );
                    $stock_quantity += wc_stock_amount( $request['inventory_delta'] );
                    $product->set_stock_quantity( wc_stock_amount( $stock_quantity ) );
                }
            } else {
                // Don't manage stock.
                $product->set_manage_stock( 'no' );
                $product->set_stock_quantity( '' );
                $product->set_stock_status( $stock_status );
            }
        } elseif ( ! $product->is_type( 'variable' ) ) {
            $product->set_stock_status( $stock_status );
        }

        // Upsells.
        if ( isset( $request['upsell_ids'] ) ) {
            $upsells = array();
            $ids     = $request['upsell_ids'];

            if ( ! empty( $ids ) ) {
                foreach ( $ids as $id ) {
                    if ( $id && $id > 0 ) {
                        $upsells[] = $id;
                    }
                }
            }

            $product->set_upsell_ids( $upsells );
        }

        // Cross sells.
        if ( isset( $request['cross_sell_ids'] ) ) {
            $crosssells = array();
            $ids        = $request['cross_sell_ids'];

            if ( ! empty( $ids ) ) {
                foreach ( $ids as $id ) {
                    if ( $id && $id > 0 ) {
                        $crosssells[] = $id;
                    }
                }
            }

            $product->set_cross_sell_ids( $crosssells );
        }

        // Product categories.
        if ( isset( $request['categories'] ) && is_array( $request['categories'] ) ) {
            $product = $this->save_taxonomy_terms( $product, $request['categories'] );
        }

        // Product tags.
        if ( isset( $request['tags'] ) && is_array( $request['tags'] ) ) {
            $product = $this->save_taxonomy_terms( $product, $request['tags'], 'tag' );
        }

        // Downloadable.
        if ( isset( $request['downloadable'] ) ) {
            $product->set_downloadable( $request['downloadable'] );
        }

        // Downloadable options.
        if ( $product->get_downloadable() ) {

            // Downloadable files.
            if ( isset( $request['downloads'] ) && is_array( $request['downloads'] ) ) {
                $product = $this->save_downloadable_files( $product, $request['downloads'] );
            }

            // Download limit.
            if ( isset( $request['download_limit'] ) ) {
                $product->set_download_limit( $request['download_limit'] );
            }

            // Download expiry.
            if ( isset( $request['download_expiry'] ) ) {
                $product->set_download_expiry( $request['download_expiry'] );
            }
        }

        // Product url and button text for external products.
        if ( $product->is_type( 'external' ) ) {
            if ( isset( $request['external_url'] ) ) {
                $product->set_product_url( $request['external_url'] );
            }

            if ( isset( $request['button_text'] ) ) {
                $product->set_button_text( $request['button_text'] );
            }
        }

        // Save default attributes for variable products.
        if ( $product->is_type( 'variable' ) ) {
            $product = $this->save_default_attributes( $product, $request );
        }

        return $product;
    }

    /**
     * Save variations.
     *
     * @throws WC_REST_Exception REST API exceptions.
     * @param WC_Product      $product          Product instance.
     * @param WP_REST_Request $request          Request data.
     * @return bool
     */
    protected function save_variations_data( $product, $request ) {
        foreach ( $request['variations'] as $menu_order => $data ) {
            $variation = new WC_Product_Variation( isset( $data['id'] ) ? absint( $data['id'] ) : 0 );

            // Create initial name and status.
            if ( ! $variation->get_slug() ) {
                /* translators: 1: variation id 2: product name */
                $variation->set_name( sprintf( __( 'Variation #%1$s of %2$s', 'woocommerce' ), $variation->get_id(), $product->get_name() ) );
                $variation->set_status( isset( $data['visible'] ) && false === $data['visible'] ? 'private' : 'publish' );
            }

            // Parent ID.
            $variation->set_parent_id( $product->get_id() );

            // Menu order.
            $variation->set_menu_order( $menu_order );

            // Status.
            if ( isset( $data['visible'] ) ) {
                $variation->set_status( false === $data['visible'] ? 'private' : 'publish' );
            }

            // SKU.
            if ( isset( $data['sku'] ) ) {
                $variation->set_sku( wc_clean( $data['sku'] ) );
            }

            // Thumbnail.
            if ( isset( $data['image'] ) && is_array( $data['image'] ) ) {
                $image = $data['image'];
                $image = current( $image );
                if ( is_array( $image ) ) {
                    $image['position'] = 0;
                }

                $variation = $this->set_product_images( $variation, array( $image ) );
            }

            // Virtual variation.
            if ( isset( $data['virtual'] ) ) {
                $variation->set_virtual( $data['virtual'] );
            }

            // Downloadable variation.
            if ( isset( $data['downloadable'] ) ) {
                $variation->set_downloadable( $data['downloadable'] );
            }

            // Downloads.
            if ( $variation->get_downloadable() ) {
                // Downloadable files.
                if ( isset( $data['downloads'] ) && is_array( $data['downloads'] ) ) {
                    $variation = $this->save_downloadable_files( $variation, $data['downloads'] );
                }

                // Download limit.
                if ( isset( $data['download_limit'] ) ) {
                    $variation->set_download_limit( $data['download_limit'] );
                }

                // Download expiry.
                if ( isset( $data['download_expiry'] ) ) {
                    $variation->set_download_expiry( $data['download_expiry'] );
                }
            }

            // Shipping data.
            $variation = $this->save_product_shipping_data( $variation, $data );

            // Stock handling.
            if ( isset( $data['manage_stock'] ) ) {
                $variation->set_manage_stock( $data['manage_stock'] );
            }

            if ( isset( $data['in_stock'] ) ) {
                $variation->set_stock_status( true === $data['in_stock'] ? 'instock' : 'outofstock' );
            }

            if ( isset( $data['backorders'] ) ) {
                $variation->set_backorders( $data['backorders'] );
            }

            if ( $variation->get_manage_stock() ) {
                if ( isset( $data['stock_quantity'] ) ) {
                    $variation->set_stock_quantity( $data['stock_quantity'] );
                } elseif ( isset( $data['inventory_delta'] ) ) {
                    $stock_quantity  = wc_stock_amount( $variation->get_stock_quantity() );
                    $stock_quantity += wc_stock_amount( $data['inventory_delta'] );
                    $variation->set_stock_quantity( $stock_quantity );
                }
            } else {
                $variation->set_backorders( 'no' );
                $variation->set_stock_quantity( '' );
            }

            // Regular Price.
            if ( isset( $data['regular_price'] ) ) {
                $variation->set_regular_price( $data['regular_price'] );
            }

            // Sale Price.
            if ( isset( $data['sale_price'] ) ) {
                $variation->set_sale_price( $data['sale_price'] );
            }

            if ( isset( $data['date_on_sale_from'] ) ) {
                $variation->set_date_on_sale_from( $data['date_on_sale_from'] );
            }

            if ( isset( $data['date_on_sale_to'] ) ) {
                $variation->set_date_on_sale_to( $data['date_on_sale_to'] );
            }

            // Tax class.
            if ( isset( $data['tax_class'] ) ) {
                $variation->set_tax_class( $data['tax_class'] );
            }

            // Description.
            if ( isset( $data['description'] ) ) {
                $variation->set_description( wp_kses_post( $data['description'] ) );
            }

            // Update taxonomies.
            if ( isset( $data['attributes'] ) ) {
                $attributes = array();
                $parent_attributes = $product->get_attributes();

                foreach ( $data['attributes'] as $attribute ) {
                    $attribute_id   = 0;
                    $attribute_name = '';

                    // Check ID for global attributes or name for product attributes.
                    if ( ! empty( $attribute['id'] ) ) {
                        $attribute_id   = absint( $attribute['id'] );
                        $attribute_name = wc_attribute_taxonomy_name_by_id( $attribute_id );
                    } elseif ( ! empty( $attribute['name'] ) ) {
                        $attribute_name = sanitize_title( $attribute['name'] );
                    }

                    if ( ! $attribute_id && ! $attribute_name ) {
                        continue;
                    }

                    if ( ! isset( $parent_attributes[ $attribute_name ] ) || ! $parent_attributes[ $attribute_name ]->get_variation() ) {
                        continue;
                    }

                    $attribute_key   = sanitize_title( $parent_attributes[ $attribute_name ]->get_name() );
                    $attribute_value = isset( $attribute['option'] ) ? wc_clean( stripslashes( $attribute['option'] ) ) : '';

                    if ( $parent_attributes[ $attribute_name ]->is_taxonomy() ) {
                        // If dealing with a taxonomy, we need to get the slug from the name posted to the API.
                        $term = get_term_by( 'name', $attribute_value, $attribute_name );

                        if ( $term && ! is_wp_error( $term ) ) {
                            $attribute_value = $term->slug;
                        } else {
                            $attribute_value = sanitize_title( $attribute_value );
                        }
                    }

                    $attributes[ $attribute_key ] = $attribute_value;
                }

                $variation->set_attributes( $attributes );
            }

            $variation->save();

            do_action( 'woocommerce_rest_save_product_variation', $variation->get_id(), $menu_order, $data );
        }

        return true;
    }

    /**
     * Add post meta fields.
     *
     * @param WP_Post         $post    Post data.
     * @param WP_REST_Request $request Request data.
     * @return bool|WP_Error
     */
    protected function add_post_meta_fields( $post, $request ) {
        return $this->update_post_meta_fields( $post, $request );
    }

    /**
     * Update post meta fields.
     *
     * @param WP_Post         $post    Post data.
     * @param WP_REST_Request $request Request data.
     * @return bool|WP_Error
     */
    protected function update_post_meta_fields( $post, $request ) {
        $product = wc_get_product( $post );

        // Check for featured/gallery images, upload it and set it.
        if ( isset( $request['images'] ) ) {
            $product = $this->set_product_images( $product, $request['images'] );
        }

        // Save product meta fields.
        $product = $this->set_product_meta( $product, $request );

        // Save the product data.
        $product->save();

        // Save variations.
        if ( $product->is_type( 'variable' ) ) {
            if ( isset( $request['variations'] ) && is_array( $request['variations'] ) ) {
                $this->save_variations_data( $product, $request );
            }
        }

        // Clear caches here so in sync with any new variations/children.
        wc_delete_product_transients( $product->get_id() );
        wp_cache_delete( 'product-' . $product->get_id(), 'products' );

        return true;
    }

    /**
     * Clear cache/transients.
     *
     * @param WP_Post $post Post data.
     */
    public function clear_transients( $post ) {
        wc_delete_product_transients( $post->ID );
    }

    /**
     * Delete post.
     *
     * @param int|WP_Post $id Post ID or WP_Post instance.
     */
    protected function delete_post( $id ) {
        if ( ! empty( $id->ID ) ) {
            $id = $id->ID;
        } elseif ( ! is_numeric( $id ) || 0 >= $id ) {
            return;
        }

        // Delete product attachments.
        $attachments = get_posts( array(
            'post_parent' => $id,
            'post_status' => 'any',
            'post_type'   => 'attachment',
        ) );

        foreach ( (array) $attachments as $attachment ) {
            wp_delete_attachment( $attachment->ID, true );
        }

        // Delete product.
        $product = wc_get_product( $id );
        $product->delete( true );
    }

    /**
     * Delete a single item.
     *
     * @param WP_REST_Request $request Full details about the request.
     * @return WP_REST_Response|WP_Error
     */
    public function delete_item( $request ) {
        $id      = (int) $request['id'];
        $force   = (bool) $request['force'];
        $post    = get_post( $id );
        $product = wc_get_product( $id );

        if ( ! empty( $post->post_type ) && 'product_variation' === $post->post_type && 'product' === $this->post_type ) {
            return new WP_Error( "woocommerce_rest_invalid_{$this->post_type}_id", __( 'To manipulate product variations you should use the /products/&lt;product_id&gt;/variations/&lt;id&gt; endpoint.', 'woocommerce' ), array( 'status' => 404 ) );
        } elseif ( empty( $id ) || empty( $post->ID ) || $post->post_type !== $this->post_type ) {
            return new WP_Error( "woocommerce_rest_{$this->post_type}_invalid_id", __( 'Invalid post ID.', 'woocommerce' ), array( 'status' => 404 ) );
        }

        $supports_trash = EMPTY_TRASH_DAYS > 0;

        /**
         * Filter whether an item is trashable.
         *
         * Return false to disable trash support for the item.
         *
         * @param boolean $supports_trash Whether the item type support trashing.
         * @param WP_Post $post           The Post object being considered for trashing support.
         */
        $supports_trash = apply_filters( "woocommerce_rest_{$this->post_type}_trashable", $supports_trash, $post );

        if ( ! wc_rest_check_post_permissions( $this->post_type, 'delete', $post->ID ) ) {
            /* translators: %s: post type */
            return new WP_Error( "woocommerce_rest_user_cannot_delete_{$this->post_type}", sprintf( __( 'Sorry, you are not allowed to delete %s.', 'woocommerce' ), $this->post_type ), array( 'status' => rest_authorization_required_code() ) );
        }

        $request->set_param( 'context', 'edit' );
        $response = $this->prepare_item_for_response( $post, $request );

        // If we're forcing, then delete permanently.
        if ( $force ) {
            if ( $product->is_type( 'variable' ) ) {
                foreach ( $product->get_children() as $child_id ) {
                    $child = wc_get_product( $child_id );
                    if ( ! empty( $child ) ) {
                        $child->delete( true );
                    }
                }
            } else {
                // For other product types, if the product has children, remove the relationship.
                foreach ( $product->get_children() as $child_id ) {
                    $child = wc_get_product( $child_id );
                    if ( ! empty( $child ) ) {
                        $child->set_parent_id( 0 );
                        $child->save();
                    }
                }
            }

            $product->delete( true );
            $result = ! ( $product->get_id() > 0 );
        } else {
            // If we don't support trashing for this type, error out.
            if ( ! $supports_trash ) {
                /* translators: %s: post type */
                return new WP_Error( 'woocommerce_rest_trash_not_supported', sprintf( __( 'The %s does not support trashing.', 'woocommerce' ), $this->post_type ), array( 'status' => 501 ) );
            }

            // Otherwise, only trash if we haven't already.
            if ( 'trash' === $post->post_status ) {
                /* translators: %s: post type */
                return new WP_Error( 'woocommerce_rest_already_trashed', sprintf( __( 'The %s has already been deleted.', 'woocommerce' ), $this->post_type ), array( 'status' => 410 ) );
            }

            // (Note that internally this falls through to `wp_delete_post` if
            // the trash is disabled.)
            $product->delete();
            $result = 'trash' === $product->get_status();
        }

        if ( ! $result ) {
            /* translators: %s: post type */
            return new WP_Error( 'woocommerce_rest_cannot_delete', sprintf( __( 'The %s cannot be deleted.', 'woocommerce' ), $this->post_type ), array( 'status' => 500 ) );
        }

        // Delete parent product transients.
        if ( $parent_id = wp_get_post_parent_id( $id ) ) {
            wc_delete_product_transients( $parent_id );
        }

        /**
         * Fires after a single item is deleted or trashed via the REST API.
         *
         * @param object           $post     The deleted or trashed item.
         * @param WP_REST_Response $response The response data.
         * @param WP_REST_Request  $request  The request sent to the API.
         */
        do_action( "woocommerce_rest_delete_{$this->post_type}", $post, $response, $request );

        return $response;
    }

    /**
     * Get the Product's schema, conforming to JSON Schema.
     *
     * @return array
     */
    public function get_item_schema() {
        $weight_unit    = get_option( 'woocommerce_weight_unit' );
        $dimension_unit = get_option( 'woocommerce_dimension_unit' );
        $schema         = array(
            '$schema'    => 'http://json-schema.org/draft-04/schema#',
            'title'      => $this->post_type,
            'type'       => 'object',
            'properties' => array(
                'id' => array(
                    'description' => __( 'Unique identifier for the resource.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'name' => array(
                    'description' => __( 'Product name.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'slug' => array(
                    'description' => __( 'Product slug.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'permalink' => array(
                    'description' => __( 'Product URL.', 'woocommerce' ),
                    'type'        => 'string',
                    'format'      => 'uri',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'date_created' => array(
                    'description' => __( "The date the product was created, in the site's timezone.", 'woocommerce' ),
                    'type'        => 'date-time',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'date_modified' => array(
                    'description' => __( "The date the product was last modified, in the site's timezone.", 'woocommerce' ),
                    'type'        => 'date-time',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'type' => array(
                    'description' => __( 'Product type.', 'woocommerce' ),
                    'type'        => 'string',
                    'default'     => 'simple',
                    'enum'        => array_keys( wc_get_product_types() ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'status' => array(
                    'description' => __( 'Product status (post status).', 'woocommerce' ),
                    'type'        => 'string',
                    'default'     => 'publish',
                    'enum'        => array_merge( array_keys( get_post_statuses() ), array( 'future' ) ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'featured' => array(
                    'description' => __( 'Featured product.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => false,
                    'context'     => array( 'view', 'edit' ),
                ),
                'catalog_visibility' => array(
                    'description' => __( 'Catalog visibility.', 'woocommerce' ),
                    'type'        => 'string',
                    'default'     => 'visible',
                    'enum'        => array( 'visible', 'catalog', 'search', 'hidden' ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'description' => array(
                    'description' => __( 'Product description.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'short_description' => array(
                    'description' => __( 'Product short description.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'sku' => array(
                    'description' => __( 'Unique identifier.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'price' => array(
                    'description' => __( 'Current product price.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'regular_price' => array(
                    'description' => __( 'Product regular price.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'sale_price' => array(
                    'description' => __( 'Product sale price.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'date_on_sale_from' => array(
                    'description' => __( 'Start date of sale price.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'date_on_sale_to' => array(
                    'description' => __( 'End date of sale price.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'price_html' => array(
                    'description' => __( 'Price formatted in HTML.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'on_sale' => array(
                    'description' => __( 'Shows if the product is on sale.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'purchasable' => array(
                    'description' => __( 'Shows if the product can be bought.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'total_sales' => array(
                    'description' => __( 'Amount of sales.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'virtual' => array(
                    'description' => __( 'If the product is virtual.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => false,
                    'context'     => array( 'view', 'edit' ),
                ),
                'downloadable' => array(
                    'description' => __( 'If the product is downloadable.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => false,
                    'context'     => array( 'view', 'edit' ),
                ),
                'downloads' => array(
                    'description' => __( 'List of downloadable files.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'File ID.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'name' => array(
                                'description' => __( 'File name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'file' => array(
                                'description' => __( 'File URL.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                        ),
                    ),
                ),
                'download_limit' => array(
                    'description' => __( 'Number of times downloadable files can be downloaded after purchase.', 'woocommerce' ),
                    'type'        => 'integer',
                    'default'     => -1,
                    'context'     => array( 'view', 'edit' ),
                ),
                'download_expiry' => array(
                    'description' => __( 'Number of days until access to downloadable files expires.', 'woocommerce' ),
                    'type'        => 'integer',
                    'default'     => -1,
                    'context'     => array( 'view', 'edit' ),
                ),
                'download_type' => array(
                    'description' => __( 'Download type, this controls the schema on the front-end.', 'woocommerce' ),
                    'type'        => 'string',
                    'default'     => 'standard',
                    'enum'        => array( 'standard' ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'external_url' => array(
                    'description' => __( 'Product external URL. Only for external products.', 'woocommerce' ),
                    'type'        => 'string',
                    'format'      => 'uri',
                    'context'     => array( 'view', 'edit' ),
                ),
                'button_text' => array(
                    'description' => __( 'Product external button text. Only for external products.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'tax_status' => array(
                    'description' => __( 'Tax status.', 'woocommerce' ),
                    'type'        => 'string',
                    'default'     => 'taxable',
                    'enum'        => array( 'taxable', 'shipping', 'none' ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'tax_class' => array(
                    'description' => __( 'Tax class.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'manage_stock' => array(
                    'description' => __( 'Stock management at product level.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => false,
                    'context'     => array( 'view', 'edit' ),
                ),
                'stock_quantity' => array(
                    'description' => __( 'Stock quantity.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                ),
                'in_stock' => array(
                    'description' => __( 'Controls whether or not the product is listed as "in stock" or "out of stock" on the frontend.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => true,
                    'context'     => array( 'view', 'edit' ),
                ),
                'backorders' => array(
                    'description' => __( 'If managing stock, this controls if backorders are allowed.', 'woocommerce' ),
                    'type'        => 'string',
                    'default'     => 'no',
                    'enum'        => array( 'no', 'notify', 'yes' ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'backorders_allowed' => array(
                    'description' => __( 'Shows if backorders are allowed.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'backordered' => array(
                    'description' => __( 'Shows if the product is on backordered.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'sold_individually' => array(
                    'description' => __( 'Allow one item to be bought in a single order.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => false,
                    'context'     => array( 'view', 'edit' ),
                ),
                'weight' => array(
                    /* translators: %s: weight unit */
                    'description' => sprintf( __( 'Product weight (%s).', 'woocommerce' ), $weight_unit ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'dimensions' => array(
                    'description' => __( 'Product dimensions.', 'woocommerce' ),
                    'type'        => 'object',
                    'context'     => array( 'view', 'edit' ),
                    'properties'  => array(
                        'length' => array(
                            /* translators: %s: dimension unit */
                            'description' => sprintf( __( 'Product length (%s).', 'woocommerce' ), $dimension_unit ),
                            'type'        => 'string',
                            'context'     => array( 'view', 'edit' ),
                        ),
                        'width' => array(
                            /* translators: %s: dimension unit */
                            'description' => sprintf( __( 'Product width (%s).', 'woocommerce' ), $dimension_unit ),
                            'type'        => 'string',
                            'context'     => array( 'view', 'edit' ),
                        ),
                        'height' => array(
                            /* translators: %s: dimension unit */
                            'description' => sprintf( __( 'Product height (%s).', 'woocommerce' ), $dimension_unit ),
                            'type'        => 'string',
                            'context'     => array( 'view', 'edit' ),
                        ),
                    ),
                ),
                'shipping_required' => array(
                    'description' => __( 'Shows if the product need to be shipped.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'shipping_taxable' => array(
                    'description' => __( 'Shows whether or not the product shipping is taxable.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'shipping_class' => array(
                    'description' => __( 'Shipping class slug.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'shipping_class_id' => array(
                    'description' => __( 'Shipping class ID.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'reviews_allowed' => array(
                    'description' => __( 'Allow reviews.', 'woocommerce' ),
                    'type'        => 'boolean',
                    'default'     => true,
                    'context'     => array( 'view', 'edit' ),
                ),
                'average_rating' => array(
                    'description' => __( 'Reviews average rating.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'rating_count' => array(
                    'description' => __( 'Amount of reviews that the product have.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'related_ids' => array(
                    'description' => __( 'List of related products IDs.', 'woocommerce' ),
                    'type'        => 'array',
                    'items'       => array(
                        'type'    => 'integer',
                    ),
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'upsell_ids' => array(
                    'description' => __( 'List of upsell products IDs.', 'woocommerce' ),
                    'type'        => 'array',
                    'items'       => array(
                        'type'    => 'integer',
                    ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'cross_sell_ids' => array(
                    'description' => __( 'List of cross-sell products IDs.', 'woocommerce' ),
                    'type'        => 'array',
                    'items'       => array(
                        'type'    => 'integer',
                    ),
                    'context'     => array( 'view', 'edit' ),
                ),
                'parent_id' => array(
                    'description' => __( 'Product parent ID.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                ),
                'purchase_note' => array(
                    'description' => __( 'Optional note to send the customer after purchase.', 'woocommerce' ),
                    'type'        => 'string',
                    'context'     => array( 'view', 'edit' ),
                ),
                'categories' => array(
                    'description' => __( 'List of categories.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'Category ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'name' => array(
                                'description' => __( 'Category name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'slug' => array(
                                'description' => __( 'Category slug.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                        ),
                    ),
                ),
                'tags' => array(
                    'description' => __( 'List of tags.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'Tag ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'name' => array(
                                'description' => __( 'Tag name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'slug' => array(
                                'description' => __( 'Tag slug.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                        ),
                    ),
                ),
                'images' => array(
                    'description' => __( 'List of images.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'Image ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'date_created' => array(
                                'description' => __( "The date the image was created, in the site's timezone.", 'woocommerce' ),
                                'type'        => 'date-time',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'date_modified' => array(
                                'description' => __( "The date the image was last modified, in the site's timezone.", 'woocommerce' ),
                                'type'        => 'date-time',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'src' => array(
                                'description' => __( 'Image URL.', 'woocommerce' ),
                                'type'        => 'string',
                                'format'      => 'uri',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'name' => array(
                                'description' => __( 'Image name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'alt' => array(
                                'description' => __( 'Image alternative text.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'position' => array(
                                'description' => __( 'Image position. 0 means that the image is featured.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                        ),
                    ),
                ),
                'attributes' => array(
                    'description' => __( 'List of attributes.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'Attribute ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'name' => array(
                                'description' => __( 'Attribute name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'position' => array(
                                'description' => __( 'Attribute position.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'visible' => array(
                                'description' => __( "Define if the attribute is visible on the \"Additional information\" tab in the product's page.", 'woocommerce' ),
                                'type'        => 'boolean',
                                'default'     => false,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'variation' => array(
                                'description' => __( 'Define if the attribute can be used as variation.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'default'     => false,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'options' => array(
                                'description' => __( 'List of available term names of the attribute.', 'woocommerce' ),
                                'type'        => 'array',
                                'context'     => array( 'view', 'edit' ),
                            ),
                        ),
                    ),
                ),
                'default_attributes' => array(
                    'description' => __( 'Defaults variation attributes.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'Attribute ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'name' => array(
                                'description' => __( 'Attribute name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'option' => array(
                                'description' => __( 'Selected attribute term name.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                        ),
                    ),
                ),
                'variations' => array(
                    'description' => __( 'List of variations.', 'woocommerce' ),
                    'type'        => 'array',
                    'context'     => array( 'view', 'edit' ),
                    'items'       => array(
                        'type'       => 'object',
                        'properties' => array(
                            'id' => array(
                                'description' => __( 'Variation ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'date_created' => array(
                                'description' => __( "The date the variation was created, in the site's timezone.", 'woocommerce' ),
                                'type'        => 'date-time',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'date_modified' => array(
                                'description' => __( "The date the variation was last modified, in the site's timezone.", 'woocommerce' ),
                                'type'        => 'date-time',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'permalink' => array(
                                'description' => __( 'Variation URL.', 'woocommerce' ),
                                'type'        => 'string',
                                'format'      => 'uri',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'sku' => array(
                                'description' => __( 'Unique identifier.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'price' => array(
                                'description' => __( 'Current variation price.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'regular_price' => array(
                                'description' => __( 'Variation regular price.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'sale_price' => array(
                                'description' => __( 'Variation sale price.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'date_on_sale_from' => array(
                                'description' => __( 'Start date of sale price.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'date_on_sale_to' => array(
                                'description' => __( 'End date of sale price.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'on_sale' => array(
                                'description' => __( 'Shows if the variation is on sale.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'purchasable' => array(
                                'description' => __( 'Shows if the variation can be bought.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'visible' => array(
                                'description' => __( 'If the variation is visible.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'virtual' => array(
                                'description' => __( 'If the variation is virtual.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'default'     => false,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'downloadable' => array(
                                'description' => __( 'If the variation is downloadable.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'default'     => false,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'downloads' => array(
                                'description' => __( 'List of downloadable files.', 'woocommerce' ),
                                'type'        => 'array',
                                'context'     => array( 'view', 'edit' ),
                                'items'       => array(
                                    'type'       => 'object',
                                    'properties' => array(
                                        'id' => array(
                                            'description' => __( 'File ID.', 'woocommerce' ),
                                            'type'        => 'string',
                                            'context'     => array( 'view', 'edit' ),
                                        ),
                                        'name' => array(
                                            'description' => __( 'File name.', 'woocommerce' ),
                                            'type'        => 'string',
                                            'context'     => array( 'view', 'edit' ),
                                        ),
                                        'file' => array(
                                            'description' => __( 'File URL.', 'woocommerce' ),
                                            'type'        => 'string',
                                            'context'     => array( 'view', 'edit' ),
                                        ),
                                    ),
                                ),
                            ),
                            'download_limit' => array(
                                'description' => __( 'Number of times downloadable files can be downloaded after purchase.', 'woocommerce' ),
                                'type'        => 'integer',
                                'default'     => null,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'download_expiry' => array(
                                'description' => __( 'Number of days until access to downloadable files expires.', 'woocommerce' ),
                                'type'        => 'integer',
                                'default'     => null,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'tax_status' => array(
                                'description' => __( 'Tax status.', 'woocommerce' ),
                                'type'        => 'string',
                                'default'     => 'taxable',
                                'enum'        => array( 'taxable', 'shipping', 'none' ),
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'tax_class' => array(
                                'description' => __( 'Tax class.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'manage_stock' => array(
                                'description' => __( 'Stock management at variation level.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'default'     => false,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'stock_quantity' => array(
                                'description' => __( 'Stock quantity.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'in_stock' => array(
                                'description' => __( 'Controls whether or not the variation is listed as "in stock" or "out of stock" on the frontend.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'default'     => true,
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'backorders' => array(
                                'description' => __( 'If managing stock, this controls if backorders are allowed.', 'woocommerce' ),
                                'type'        => 'string',
                                'default'     => 'no',
                                'enum'        => array( 'no', 'notify', 'yes' ),
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'backorders_allowed' => array(
                                'description' => __( 'Shows if backorders are allowed.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'backordered' => array(
                                'description' => __( 'Shows if the variation is on backordered.', 'woocommerce' ),
                                'type'        => 'boolean',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'weight' => array(
                                /* translators: %s: weight unit */
                                'description' => sprintf( __( 'Variation weight (%s).', 'woocommerce' ), $weight_unit ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'dimensions' => array(
                                'description' => __( 'Variation dimensions.', 'woocommerce' ),
                                'type'        => 'object',
                                'context'     => array( 'view', 'edit' ),
                                'properties'  => array(
                                    'length' => array(
                                        /* translators: %s: dimension unit */
                                        'description' => sprintf( __( 'Variation length (%s).', 'woocommerce' ), $dimension_unit ),
                                        'type'        => 'string',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                    'width' => array(
                                        /* translators: %s: dimension unit */
                                        'description' => sprintf( __( 'Variation width (%s).', 'woocommerce' ), $dimension_unit ),
                                        'type'        => 'string',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                    'height' => array(
                                        /* translators: %s: dimension unit */
                                        'description' => sprintf( __( 'Variation height (%s).', 'woocommerce' ), $dimension_unit ),
                                        'type'        => 'string',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                ),
                            ),
                            'shipping_class' => array(
                                'description' => __( 'Shipping class slug.', 'woocommerce' ),
                                'type'        => 'string',
                                'context'     => array( 'view', 'edit' ),
                            ),
                            'shipping_class_id' => array(
                                'description' => __( 'Shipping class ID.', 'woocommerce' ),
                                'type'        => 'integer',
                                'context'     => array( 'view', 'edit' ),
                                'readonly'    => true,
                            ),
                            'image' => array(
                                'description' => __( 'Variation image data.', 'woocommerce' ),
                                'type'        => 'object',
                                'context'     => array( 'view', 'edit' ),
                                'properties'  => array(
                                    'id' => array(
                                        'description' => __( 'Image ID.', 'woocommerce' ),
                                        'type'        => 'integer',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                    'date_created' => array(
                                        'description' => __( "The date the image was created, in the site's timezone.", 'woocommerce' ),
                                        'type'        => 'date-time',
                                        'context'     => array( 'view', 'edit' ),
                                        'readonly'    => true,
                                    ),
                                    'date_modified' => array(
                                        'description' => __( "The date the image was last modified, in the site's timezone.", 'woocommerce' ),
                                        'type'        => 'date-time',
                                        'context'     => array( 'view', 'edit' ),
                                        'readonly'    => true,
                                    ),
                                    'src' => array(
                                        'description' => __( 'Image URL.', 'woocommerce' ),
                                        'type'        => 'string',
                                        'format'      => 'uri',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                    'name' => array(
                                        'description' => __( 'Image name.', 'woocommerce' ),
                                        'type'        => 'string',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                    'alt' => array(
                                        'description' => __( 'Image alternative text.', 'woocommerce' ),
                                        'type'        => 'string',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                    'position' => array(
                                        'description' => __( 'Image position. 0 means that the image is featured.', 'woocommerce' ),
                                        'type'        => 'integer',
                                        'context'     => array( 'view', 'edit' ),
                                    ),
                                ),
                            ),
                            'attributes' => array(
                                'description' => __( 'List of attributes.', 'woocommerce' ),
                                'type'        => 'array',
                                'context'     => array( 'view', 'edit' ),
                                'items'       => array(
                                    'type'       => 'object',
                                    'properties' => array(
                                        'id' => array(
                                            'description' => __( 'Attribute ID.', 'woocommerce' ),
                                            'type'        => 'integer',
                                            'context'     => array( 'view', 'edit' ),
                                        ),
                                        'name' => array(
                                            'description' => __( 'Attribute name.', 'woocommerce' ),
                                            'type'        => 'string',
                                            'context'     => array( 'view', 'edit' ),
                                        ),
                                        'option' => array(
                                            'description' => __( 'Selected attribute term name.', 'woocommerce' ),
                                            'type'        => 'string',
                                            'context'     => array( 'view', 'edit' ),
                                        ),
                                    ),
                                ),
                            ),
                        ),
                    ),
                ),
                'grouped_products' => array(
                    'description' => __( 'List of grouped products ID.', 'woocommerce' ),
                    'type'        => 'array',
                    'items'       => array(
                        'type'    => 'integer',
                    ),
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'menu_order' => array(
                    'description' => __( 'Menu order, used to custom sort products.', 'woocommerce' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit' ),
                ),
            ),
        );

        return $this->add_additional_fields_schema( $schema );
    }

    /**
     * Get the query params for collections of attachments.
     *
     * @return array
     */
    public function get_collection_params() {
        $params = parent::get_collection_params();

        $params['slug'] = array(
            'description'       => __( 'Limit result set to products with a specific slug.', 'woocommerce' ),
            'type'              => 'string',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['status'] = array(
            'default'           => 'any',
            'description'       => __( 'Limit result set to products assigned a specific status.', 'woocommerce' ),
            'type'              => 'string',
            'enum'              => array_merge( array( 'any', 'future' ), array_keys( get_post_statuses() ) ),
            'sanitize_callback' => 'sanitize_key',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['type'] = array(
            'description'       => __( 'Limit result set to products assigned a specific type.', 'woocommerce' ),
            'type'              => 'string',
            'enum'              => array_keys( wc_get_product_types() ),
            'sanitize_callback' => 'sanitize_key',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['category'] = array(
            'description'       => __( 'Limit result set to products assigned a specific category ID.', 'woocommerce' ),
            'type'              => 'string',
            'sanitize_callback' => 'wp_parse_id_list',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['tag'] = array(
            'description'       => __( 'Limit result set to products assigned a specific tag ID.', 'woocommerce' ),
            'type'              => 'string',
            'sanitize_callback' => 'wp_parse_id_list',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['shipping_class'] = array(
            'description'       => __( 'Limit result set to products assigned a specific shipping class ID.', 'woocommerce' ),
            'type'              => 'string',
            'sanitize_callback' => 'wp_parse_id_list',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['attribute'] = array(
            'description'       => __( 'Limit result set to products with a specific attribute.', 'woocommerce' ),
            'type'              => 'string',
            'sanitize_callback' => 'sanitize_text_field',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['attribute_term'] = array(
            'description'       => __( 'Limit result set to products with a specific attribute term ID (required an assigned attribute).', 'woocommerce' ),
            'type'              => 'string',
            'sanitize_callback' => 'wp_parse_id_list',
            'validate_callback' => 'rest_validate_request_arg',
        );
        $params['sku'] = array(
            'description'       => __( 'Limit result set to products with a specific SKU.', 'woocommerce' ),
            'type'              => 'string',
            'sanitize_callback' => 'sanitize_text_field',
            'validate_callback' => 'rest_validate_request_arg',
        );

        return $params;
    }
}