woocommerce/includes/api/class-wc-rest-products-controller.php

<?php
/**
 * REST API Products controller
 *
 * Handles requests to the /products endpoint.
 *
 * @author   WooThemes
 * @category API
 * @package  WooCommerce/API
 * @since    2.6.0
 */

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

/**
 * REST API Products controller class.
 *
 * @package WooCommerce/API
 * @extends WC_REST_Products_V1_Controller
 */
class WC_REST_Products_Controller extends WC_REST_Products_V1_Controller {

	/**
	 * Endpoint namespace.
	 *
	 * @var string
	 */
	protected $namespace = 'wc/v2';

	/**
	 * 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 ] ) ) {
				$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 featured.
		if ( is_bool( $request['featured'] ) ) {
			$args['tax_query'][] = array(
				'taxonomy' => 'product_visibility',
				'field'    => 'name',
				'terms'    => 'featured',
			);
		}

		// 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',
			) );
		}

		// Filter by tax class.
		if ( ! empty( $request['tax_class'] ) ) {
			$args['meta_query'] = $this->add_meta_query( $args, array(
				'key'   => '_tax_class',
				'value' => 'standard' !== $request['tax_class'] ? $request['tax_class'] : '',
			) );
		}

		// Price filter.
		if ( ! empty( $request['min_price'] ) || ! empty( $request['max_price'] ) ) {
			$args['meta_query'] = $this->add_meta_query( $args, wc_get_min_max_price_meta_query( $request ) );
		}

		// Filter product in stock or out of stock.
		if ( is_bool( $request['in_stock'] ) ) {
			$args['meta_query'] = $this->add_meta_query( $args, array(
				'key'   => '_stock_status',
				'value' => true === $request['in_stock'] ? 'instock' : 'outofstock',
			) );
		}

		// Filter by on sale products.
		if ( is_bool( $request['on_sale'] ) ) {
			$on_sale_key           = $request['on_sale'] ? 'post__in' : 'post__not_in';
			$args[ $on_sale_key ] += wc_get_product_ids_on_sale();
		}

		// 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 an individual variation's data.
	 *
	 * @todo Remove in future version of the API. We have variations endpoints now.
	 *
	 * @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->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(),
				'description'        => $variation->get_description(),
				'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() ) : '',
				'date_on_sale_to'    => $variation->get_date_on_sale_to() ? date( 'Y-m-d', $variation->get_date_on_sale_to() ) : '',
				'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;
	}

	/**
	 * 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_keys( get_post_statuses() ),
					'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 data 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 MD5 hash.', 'woocommerce' ),
								'type'        => 'string',
								'context'     => array( 'view', 'edit' ),
								'readonly'    => true,
							),
							'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' => __( 'Amount of times the product can be downloaded.', 'woocommerce' ),
					'type'        => 'integer',
					'default'     => -1,
					'context'     => array( 'view', 'edit' ),
				),
				'download_expiry' => array(
					'description' => __( 'Number of days that the customer has up to be able to download the product.', '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' ),
				),
				'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'        => 'string',
					'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 up-sell 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'        => 'object',
					'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,
							),
							'description' => array(
								'description' => __( 'Product description.', 'woocommerce' ),
								'type'        => 'string',
								'context'     => array( 'view', 'edit' ),
							),
							'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 data 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 MD5 hash.', 'woocommerce' ),
											'type'        => 'string',
											'context'     => array( 'view', 'edit' ),
											'readonly'    => true,
										),
										'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' => __( 'Amount of times the variation can be downloaded.', 'woocommerce' ),
								'type'        => 'integer',
								'default'     => null,
								'context'     => array( 'view', 'edit' ),
							),
							'download_expiry' => array(
								'description' => __( 'Number of days that the customer has up to be able to download the variation.', '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'        => 'string',
								'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' ),
								'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' ), 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['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',
		);
		$params['featured'] = array(
			'description'       => __( 'Limit result set to featured products.', 'woocommerce' ),
			'type'              => 'boolean',
			'sanitize_callback' => 'wc_string_to_bool',
			'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',
		);

		if ( wc_tax_enabled() ) {
			$params['tax_class'] = array(
				'description'       => __( 'Limit result set to products with a specific tax class.', 'woocommerce' ),
				'type'              => 'string',
				'enum'              => array_merge( array( 'standard' ), WC_Tax::get_tax_class_slugs() ),
				'sanitize_callback' => 'sanitize_text_field',
				'validate_callback' => 'rest_validate_request_arg',
			);
		}

		$params['in_stock'] = array(
			'description'       => __( 'Limit result set to products in stock or out of stock.', 'woocommerce' ),
			'type'              => 'boolean',
			'sanitize_callback' => 'wc_string_to_bool',
			'validate_callback' => 'rest_validate_request_arg',
		);
		$params['on_sale'] = array(
			'description'       => __( 'Limit result set to products on sale.', 'woocommerce' ),
			'type'              => 'boolean',
			'sanitize_callback' => 'wc_string_to_bool',
			'validate_callback' => 'rest_validate_request_arg',
		);
		$params['min_price'] = array(
			'description'       => __( 'Limit result set to products based on a minimum price.', 'woocommerce' ),
			'type'              => 'string',
			'sanitize_callback' => 'sanitize_text_field',
			'validate_callback' => 'rest_validate_request_arg',
		);
		$params['max_price'] = array(
			'description'       => __( 'Limit result set to products based on a maximum price.', 'woocommerce' ),
			'type'              => 'string',
			'sanitize_callback' => 'sanitize_text_field',
			'validate_callback' => 'rest_validate_request_arg',
		);

		return $params;
	}
}