<?php
/**
 * REST API Products controller
 *
 * Handles requests to the /products endpoint.
 *
 * @author   WooThemes
 * @category API
 * @package  ClassicCommerce/API
 * @since    WC-3.0.0
 */

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

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

		return $params;
	}
}
