Default -1.
 *     @type string   $category       Comma-separated list of category IDs to include links from.
 *                                    Default empty.
 *     @type string   $category_name  Category to retrieve links for by name. Default empty.
 *     @type int|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts
 *                                    1|true or 0|false. Default 1|true.
 *     @type int|bool $show_updated   Whether to display the time the bookmark was last updated.
 *                                    Accepts 1|true or 0|false. Default 0|false.
 *     @type string   $include        Comma-separated list of bookmark IDs to include. Default empty.
 *     @type string   $exclude        Comma-separated list of bookmark IDs to exclude. Default empty.
 *     @type string   $search         Search terms. Will be SQL-formatted with wildcards before and after
 *                                    and searched in 'link_url', 'link_name' and 'link_description'.
 *                                    Default empty.
 * }
 * @return object[] List of bookmark row objects.
 */
function get_bookmarks( $args = '' ) {
	global $wpdb;

	$defaults = array(
		'orderby'        => 'name',
		'order'          => 'ASC',
		'limit'          => -1,
		'category'       => '',
		'category_name'  => '',
		'hide_invisible' => 1,
		'show_updated'   => 0,
		'include'        => '',
		'exclude'        => '',
		'search'         => '',
	);

	$parsed_args = wp_parse_args( $args, $defaults );

	$key   = md5( serialize( $parsed_args ) );
	$cache = wp_cache_get( 'get_bookmarks', 'bookmark' );

	if ( 'rand' !== $parsed_args['orderby'] && $cache ) {
		if ( is_array( $cache ) && isset( $cache[ $key ] ) ) {
			$bookmarks = $cache[ $key ];
			/**
			 * Filters the returned list of bookmarks.
			 *
			 * The first time the hook is evaluated in this file, it returns the cached
			 * bookmarks list. The second evaluation returns a cached bookmarks list if the
			 * link category is passed but does not exist. The third evaluation returns
			 * the full cached results.
			 *
			 * @since 2.1.0
			 *
			 * @see get_bookmarks()
			 *
			 * @param array $bookmarks   List of the cached bookmarks.
			 * @param array $parsed_args An array of bookmark query arguments.
			 */
			return apply_filters( 'get_bookmarks', $bookmarks, $parsed_args );
		}
	}

	if ( ! is_array( $cache ) ) {
		$cache = array();
	}

	$inclusions = '';
	if ( ! empty( $parsed_args['include'] ) ) {
		$parsed_args['exclude']       = '';  // Ignore exclude, category, and category_name params if using include.
		$parsed_args['category']      = '';
		$parsed_args['category_name'] = '';

		$inclinks = wp_parse_id_list( $parsed_args['include'] );
		if ( count( $inclinks ) ) {
			foreach ( $inclinks as $inclink ) {
				if ( empty( $inclusions ) ) {
					$inclusions = ' AND ( link_id = ' . $inclink . ' ';
				} else {
					$inclusions .= ' OR link_id = ' . $inclink . ' ';
				}
			}
		}
	}
	if ( ! empty( $inclusions ) ) {
		$inclusions .= ')';
	}

	$exclusions = '';
	if ( ! empty( $parsed_args['exclude'] ) ) {
		$exlinks = wp_parse_id_list( $parsed_args['exclude'] );
		if ( count( $exlinks ) ) {
			foreach ( $exlinks as $exlink ) {
				if ( empty( $exclusions ) ) {
					$exclusions = ' AND ( link_id <> ' . $exlink . ' ';
				} else {
					$exclusions .= ' AND link_id <> ' . $exlink . ' ';
				}
			}
		}
	}
	if ( ! empty( $exclusions ) ) {
		$exclusions .= ')';
	}

	if ( ! empty( $parsed_args['category_name'] ) ) {
		$parsed_args['category'] = get_term_by( 'name', $parsed_args['category_name'], 'link_category' );
		if ( $parsed_args['category'] ) {
			$parsed_args['category'] = $parsed_args['category']->term_id;
		} else {
			$cache[ $key ] = array();
			wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
			/** This filter is documented in wp-includes/bookmark.php */
			return apply_filters( 'get_bookmarks', array(), $parsed_args );
		}
	}

	$search = '';
	if ( ! empty( $parsed_args['search'] ) ) {
		$like   = '%' . $wpdb->esc_like( $parsed_args['search'] ) . '%';
		$search = $wpdb->prepare( ' AND ( (link_url LIKE %s) OR (link_name LIKE %s) OR (link_description LIKE %s) ) ', $like, $like, $like );
	}

	$category_query = '';
	$join           = '';
	if ( ! empty( $parsed_args['category'] ) ) {
		$incategories = wp_parse_id_list( $parsed_args['category'] );
		if ( count( $incategories ) ) {
			foreach ( $incategories as $incat ) {
				if ( empty( $category_query ) ) {
					$category_query = ' AND ( tt.term_id = ' . $incat . ' ';
				} else {
					$category_query .= ' OR tt.term_id = ' . $incat . ' ';
				}
			}
		}
	}
	if ( ! empty( $category_query ) ) {
		$category_query .= ") AND taxonomy = 'link_category'";
		$join            = " INNER JOIN $wpdb->term_relationships AS tr ON ($wpdb->links.link_id = tr.object_id) INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id";
	}

	if ( $parsed_args['show_updated'] ) {
		$recently_updated_test = ', IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated ';
	} else {
		$recently_updated_test = '';
	}

	$get_updated = ( $parsed_args['show_updated'] ) ? ', UNIX_TIMESTAMP(link_updated) AS link_updated_f ' : '';

	$orderby = strtolower( $parsed_args['orderby'] );
	$length  = '';
	switch ( $orderby ) {
		case 'length':
			$length = ', CHAR_LENGTH(link_name) AS length';
			break;
		case 'rand':
			$orderby = 'rand()';
			break;
		case 'link_id':
			$orderby = "$wpdb->links.link_id";
			break;
		default:
			$orderparams = array();
			$keys        = array( 'link_id', 'link_name', 'link_url', 'link_visible', 'link_rating', 'link_owner', 'link_updated', 'link_notes', 'link_description' );
			foreach ( explode( ',', $orderby ) as $ordparam ) {
				$ordparam = trim( $ordparam );

				if ( in_array( 'link_' . $ordparam, $keys, true ) ) {
					$orderparams[] = 'link_' . $ordparam;
				} elseif ( in_array( $ordparam, $keys, true ) ) {
					$orderparams[] = $ordparam;
				}
			}
			$orderby = implode( ',', $orderparams );
	}

	if ( empty( $orderby ) ) {
		$orderby = 'link_name';
	}

	$order = strtoupper( $parsed_args['order'] );
	if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ), true ) ) {
		$order = 'ASC';
	}

	$visible = '';
	if ( $parsed_args['hide_invisible'] ) {
		$visible = "AND link_visible = 'Y'";
	}

	$query  = "SELECT * $length $recently_updated_test $get_updated FROM $wpdb->links $join WHERE 1=1 $visible $category_query";
	$query .= " $exclusions $inclusions $search";
	$query .= " ORDER BY $orderby $order";
	if ( -1 != $parsed_args['limit'] ) {
		$query .= ' LIMIT ' . absint( $parsed_args['limit'] );
	}

	$results = $wpdb->get_results( $query );

	if ( 'rand()' !== $orderby ) {
		$cache[ $key ] = $results;
		wp_cache_set( 'get_bookmarks', $cache, 'bookmark' );
	}

	/** This filter is documented in wp-includes/bookmark.php */
	return apply_filters( 'get_bookmarks', $results, $parsed_args );
}

/**
 * Sanitizes all bookmark fields.
 *
 * @since 2.3.0
 *
 * @param stdClass|array $bookmark Bookmark row.
 * @param string         $context  Optional. How to filter the fields. Default 'display'.
 * @return stdClass|array Same type as $bookmark but with fields sanitized.
 */
function sanitize_bookmark( $bookmark, $context = 'display' ) {
	$fields = array(
		'link_id',
		'link_url',
		'link_name',
		'link_image',
		'link_target',
		'link_category',
		'link_description',
		'link_visible',
		'link_owner',
		'link_rating',
		'link_updated',
		'link_rel',
		'link_notes',
		'link_rss',
	);

	if ( is_object( $bookmark ) ) {
		$do_object = true;
		$link_id   = $bookmark->link_id;
	} else {
		$do_object = false;
		$link_id   = $bookmark['link_id'];
	}

	foreach ( $fields as $field ) {
		if ( $do_object ) {
			if ( isset( $bookmark->$field ) ) {
				$bookmark->$field = sanitize_bookmark_field( $field, $bookmark->$field, $link_id, $context );
			}
		} else {
			if ( isset( $bookmark[ $field ] ) ) {
				$bookmark[ $field ] = sanitize_bookmark_field( $field, $bookmark[ $field ], $link_id, $context );
			}
		}
	}

	return $bookmark;
}

/**
 * Sanitizes a bookmark field.
 *
 * Sanitizes the bookmark fields based on what the field name is. If the field
 * has a strict value set, then it will be tested for that, else a more generic
 * filtering is applied. After the more strict filter is applied, if the `$context`
 * is 'raw' then the value is immediately return.
 *
 * Hooks exist for the more generic cases. With the 'edit' context, the {@see 'edit_$field'}
 * filter will be called and passed the `$value` and `$bookmark_id` respectively.
 *
 * With the 'db' context, the {@see 'pre_$field'} filter is called and passed the value.
 * The 'display' context is the final context and has the `$field` has the filter name
 * and is passed the `$value`, `$bookmark_id`, and `$context`, respectively.
 *
 * @since 2.3.0
 *
 * @param string $field       The bookmark field.
 * @param mixed  $value       The bookmark field value.
 * @param int    $bookmark_id Bookmark ID.
 * @param string $context     How to filter the field value. Accepts 'raw', 'edit', 'db',
 *                            'display', 'attribute', or 'js'. Default 'display'.
 * @return mixed The filtered value.
 */
function sanitize_bookmark_field( $field, $value, $bookmark_id, $context ) {
	$int_fields = array( 'link_id', 'link_rating' );
	if ( in_array( $field, $int_fields, true ) ) {
		$value = (int) $value;
	}

	switch ( $field ) {
		case 'link_category': // array( ints )
			$value = array_map( 'absint', (array) $value );
			/*
			 * We return here so that the categories aren't filtered.
			 * The 'link_category' filter is for the name of a link category, not an array of a link's link categories.
			 */
			return $value;

		case 'link_visible': // bool stored as Y|N
			$value = preg_replace( '/[^YNyn]/', '', $value );
			break;
		case 'link_target': // "enum"
			$targets = array( '_top', '_blank' );
			if ( ! in_array( $value, $targets, true ) ) {
				$value = '';
			}
			break;
	}

	if ( 'raw' === $context ) {
		return $value;
	}

	if ( 'edit' === $context ) {
		/** This filter is documented in wp-includes/post.php */
		$value = apply_filters( "edit_{$field}", $value, $bookmark_id );

		if ( 'link_notes' === $field ) {
			$value = esc_html( $value ); // textarea_escaped
		} else {
			$value = esc_attr( $value );
		}
	} elseif ( 'db' === $context ) {
		/** This filter is documented in wp-includes/post.php */
		$value = apply_filters( "pre_{$field}", $value );
	} else {
		/** This filter is documented in wp-includes/post.php */
		$value = apply_filters( "{$field}", $value, $bookmark_id, $context );

		if ( 'attribute' === $context ) {
			$value = esc_attr( $value );
		} elseif ( 'js' === $context ) {
			$value = esc_js( $value );
		}
	}

	// Restore the type for integer fields after esc_attr().
	if ( in_array( $field, $int_fields, true ) ) {
		$value = (int) $value;
	}

	return $value;
}

/**
 * Deletes the bookmark cache.
 *
 * @since 2.7.0
 *
 * @param int $bookmark_id Bookmark ID.
 */
function clean_bookmark_cache( $bookmark_id ) {
	wp_cache_delete( $bookmark_id, 'bookmark' );
	wp_cache_delete( 'get_bookmarks', 'bookmark' );
	clean_object_term_cache( $bookmark_id, 'link' );
}
ck?', 'woocommerce' ),
				'type'        => 'boolean',
				'context'     => [ 'view', 'edit' ],
				'readonly'    => true,
			],
			'is_on_backorder'     => [
				'description' => __( 'Is the product stock backordered? This will also return false if backorder notifications are turned off.', 'woocommerce' ),
				'type'        => 'boolean',
				'context'     => [ 'view', 'edit' ],
				'readonly'    => true,
			],
			'low_stock_remaining' => [
				'description' => __( 'Quantity left in stock if stock is low, or null if not applicable.', 'woocommerce' ),
				'type'        => [ 'integer', 'null' ],
				'context'     => [ 'view', 'edit' ],
				'readonly'    => true,
			],
			'sold_individually'   => [
				'description' => __( 'If true, only one item of this product is allowed for purchase in a single order.', 'woocommerce' ),
				'type'        => 'boolean',
				'context'     => [ 'view', 'edit' ],
				'readonly'    => true,
			],
			'add_to_cart'         => [
				'description' => __( 'Add to cart button parameters.', 'woocommerce' ),
				'type'        => 'object',
				'context'     => [ 'view', 'edit' ],
				'readonly'    => true,
				'properties'  => [
					'text'        => [
						'description' => __( 'Button text.', 'woocommerce' ),
						'type'        => 'string',
						'context'     => [ 'view', 'edit' ],
						'readonly'    => true,
					],
					'description' => [
						'description' => __( 'Button description.', 'woocommerce' ),
						'type'        => 'string',
						'context'     => [ 'view', 'edit' ],
						'readonly'    => true,
					],
					'url'         => [
						'description' => __( 'Add to cart URL.', 'woocommerce' ),
						'type'        => 'string',
						'context'     => [ 'view', 'edit' ],
						'readonly'    => true,
					],
					'minimum'     => [
						'description' => __( 'The minimum quantity that can be added to the cart.', 'woocommerce' ),
						'type'        => 'integer',
						'context'     => [ 'view', 'edit' ],
						'readonly'    => true,
					],
					'maximum'     => [
						'description' => __( 'The maximum quantity that can be added to the cart.', 'woocommerce' ),
						'type'        => 'integer',
						'context'     => [ 'view', 'edit' ],
						'readonly'    => true,
					],
					'multiple_of' => [
						'description' => __( 'The amount that quantities increment by. Quantity must be an multiple of this value.', 'woocommerce' ),
						'type'        => 'integer',
						'context'     => [ 'view', 'edit' ],
						'readonly'    => true,
						'default'     => 1,
					],
				],
			],
			self::EXTENDING_KEY   => $this->get_extended_schema( self::IDENTIFIER ),
		];
	}

	/**
	 * Convert a WooCommerce product into an object suitable for the response.
	 *
	 * @param \WC_Product $product Product instance.
	 * @return array
	 */
	public function get_item_response( $product ) {
		return [
			'id'                  => $product->get_id(),
			'name'                => $this->prepare_html_response( $product->get_title() ),
			'parent'              => $product->get_parent_id(),
			'type'                => $product->get_type(),
			'variation'           => $this->prepare_html_response( $product->is_type( 'variation' ) ? wc_get_formatted_variation( $product, true, true, false ) : '' ),
			'permalink'           => $product->get_permalink(),
			'sku'                 => $this->prepare_html_response( $product->get_sku() ),
			'short_description'   => $this->prepare_html_response( wc_format_content( wp_kses_post( $product->get_short_description() ) ) ),
			'description'         => $this->prepare_html_response( wc_format_content( wp_kses_post( $product->get_description() ) ) ),
			'on_sale'             => $product->is_on_sale(),
			'prices'              => (object) $this->prepare_product_price_response( $product ),
			'price_html'          => $this->prepare_html_response( $product->get_price_html() ),
			'average_rating'      => (string) $product->get_average_rating(),
			'review_count'        => $product->get_review_count(),
			'images'              => $this->get_images( $product ),
			'categories'          => $this->get_term_list( $product, 'product_cat' ),
			'tags'                => $this->get_term_list( $product, 'product_tag' ),
			'attributes'          => $this->get_attributes( $product ),
			'variations'          => $this->get_variations( $product ),
			'has_options'         => $product->has_options(),
			'is_purchasable'      => $product->is_purchasable(),
			'is_in_stock'         => $product->is_in_stock(),
			'is_on_backorder'     => 'onbackorder' === $product->get_stock_status(),
			'low_stock_remaining' => $this->get_low_stock_remaining( $product ),
			'sold_individually'   => $product->is_sold_individually(),
			'add_to_cart'         => (object) array_merge(
				[
					'text'        => $this->prepare_html_response( $product->add_to_cart_text() ),
					'description' => $this->prepare_html_response( $product->add_to_cart_description() ),
					'url'         => $this->prepare_html_response( $product->add_to_cart_url() ),
				],
				( new QuantityLimits() )->get_add_to_cart_limits( $product )
			),
			self::EXTENDING_KEY   => $this->get_extended_data( self::IDENTIFIER, $product ),

		];
	}

	/**
	 * Get list of product images.
	 *
	 * @param \WC_Product $product Product instance.
	 * @return array
	 */
	protected function get_images( \WC_Product $product ) {
		$attachment_ids = array_merge( [ $product->get_image_id() ], $product->get_gallery_image_ids() );

		return array_filter( array_map( [ $this->image_attachment_schema, 'get_item_response' ], $attachment_ids ) );
	}

	/**
	 * Gets remaining stock amount for a product.
	 *
	 * @param \WC_Product $product Product instance.
	 * @return integer|null
	 */
	protected function get_remaining_stock( \WC_Product $product ) {
		if ( is_null( $product->get_stock_quantity() ) ) {
			return null;
		}
		return $product->get_stock_quantity();
	}

	/**
	 * If a product has low stock, return the remaining stock amount for display.
	 *
	 * @param \WC_Product $product Product instance.
	 * @return integer|null
	 */
	protected function get_low_stock_remaining( \WC_Product $product ) {
		$remaining_stock = $this->get_remaining_stock( $product );
		$stock_format    = get_option( 'woocommerce_stock_format' );

		// Don't show the low stock badge if the settings doesn't allow it.
		if ( 'no_amount' === $stock_format ) {
			return null;
		}

		// Show the low stock badge if the remaining stock is below or equal to the threshold.
		if ( ! is_null( $remaining_stock ) && $remaining_stock <= wc_get_low_stock_amount( $product ) ) {
			return max( $remaining_stock, 0 );
		}

		return null;
	}

	/**
	 * Returns true if the given attribute is valid.
	 *
	 * @param mixed $attribute Object or variable to check.
	 * @return boolean
	 */
	protected function filter_valid_attribute( $attribute ) {
		return is_a( $attribute, '\WC_Product_Attribute' );
	}

	/**
	 * Returns true if the given attribute is valid and used for variations.
	 *
	 * @param mixed $attribute Object or variable to check.
	 * @return boolean
	 */
	protected function filter_variation_attribute( $attribute ) {
		return $this->filter_valid_attribute( $attribute ) && $attribute->get_variation();
	}

	/**
	 * Get variation IDs and attributes from the DB.
	 *
	 * @param \WC_Product $product Product instance.
	 * @returns array
	 */
	protected function get_variations( \WC_Product $product ) {
		$variation_ids = $product->is_type( 'variable' ) ? $product->get_visible_children() : [];

		if ( ! count( $variation_ids ) ) {
			return [];
		}

		/**
		 * Gets default variation data which applies to all of this products variations.
		 */
		$attributes                  = array_filter( $product->get_attributes(), [ $this, 'filter_variation_attribute' ] );
		$default_variation_meta_data = array_reduce(
			$attributes,
			function( $defaults, $attribute ) use ( $product ) {
				$meta_key              = wc_variation_attribute_name( $attribute->get_name() );
				$defaults[ $meta_key ] = [
					'name'  => wc_attribute_label( $attribute->get_name(), $product ),
					'value' => null,
				];
				return $defaults;
			},
			[]
		);
		$default_variation_meta_keys = array_keys( $default_variation_meta_data );

		/**
		 * Gets individual variation data from the database, using cache where possible.
		 */
		$cache_group   = 'product_variation_meta_data';
		$cache_value   = wp_cache_get( $product->get_id(), $cache_group );
		$last_modified = get_the_modified_date( 'U', $product->get_id() );

		if ( false === $cache_value || $last_modified !== $cache_value['last_modified'] ) {
			global $wpdb;
			// phpcs:disable WordPress.DB.PreparedSQL.NotPrepared
			$variation_meta_data = $wpdb->get_results(
				"
				SELECT post_id as variation_id, meta_key as attribute_key, meta_value as attribute_value
				FROM {$wpdb->postmeta}
				WHERE post_id IN (" . implode( ',', array_map( 'esc_sql', $variation_ids ) ) . ")
				AND meta_key IN ('" . implode( "','", array_map( 'esc_sql', $default_variation_meta_keys ) ) . "')
			"
			);
			// phpcs:enable

			wp_cache_set(
				$product->get_id(),
				[
					'last_modified' => $last_modified,
					'data'          => $variation_meta_data,
				],
				$cache_group
			);
		} else {
			$variation_meta_data = $cache_value['data'];
		}

		/**
		 * Merges and formats default variation data with individual variation data.
		 */
		$attributes_by_variation = array_reduce(
			$variation_meta_data,
			function( $values, $data ) use ( $default_variation_meta_keys ) {
				// The query above only includes the keys of $default_variation_meta_data so we know all of the attributes
				// being processed here apply to this product. However, we need an additional check here because the
				// cache may have been primed elsewhere and include keys from other products.
				// @see AbstractProductGrid::prime_product_variations.
				if ( in_array( $data->attribute_key, $default_variation_meta_keys, true ) ) {
					$values[ $data->variation_id ][ $data->attribute_key ] = $data->attribute_value;
				}
				return $values;
			},
			array_fill_keys( $variation_ids, [] )
		);

		$variations = [];

		foreach ( $variation_ids as $variation_id ) {
			$attribute_data = $default_variation_meta_data;

			foreach ( $attributes_by_variation[ $variation_id ] as $meta_key => $meta_value ) {
				if ( '' !== $meta_value ) {
					$attribute_data[ $meta_key ]['value'] = $meta_value;
				}
			}

			$variations[] = (object) [
				'id'         => $variation_id,
				'attributes' => array_values( $attribute_data ),
			];
		}

		return $variations;
	}

	/**
	 * Get list of product attributes and attribute terms.
	 *
	 * @param \WC_Product $product Product instance.
	 * @return array
	 */
	protected function get_attributes( \WC_Product $product ) {
		$attributes         = array_filter( $product->get_attributes(), [ $this, 'filter_valid_attribute' ] );
		$default_attributes = $product->get_default_attributes();
		$return             = [];

		foreach ( $attributes as $attribute_slug => $attribute ) {
			// Only visible or variation attributes will be exposed by this API.
			if ( ! $attribute->get_visible() && ! $attribute->get_variation() ) {
				continue;
			}

			$terms = $attribute->is_taxonomy() ? array_map( [ $this, 'prepare_product_attribute_taxonomy_value' ], $attribute->get_terms() ) : array_map( [ $this, 'prepare_product_attribute_value' ], $attribute->get_options() );
			// Custom attribute names are sanitized to be the array keys.
			// So when we do the array_key_exists check below we also need to sanitize the attribute names.

			$sanitized_attribute_name = sanitize_key( $attribute->get_name() );

			if ( array_key_exists( $sanitized_attribute_name, $default_attributes ) ) {
				foreach ( $terms as $term ) {
					$term->default = $term->slug === $default_attributes[ $sanitized_attribute_name ];
				}
			}

			$return[] = (object) [
				'id'             => $attribute->get_id(),
				'name'           => wc_attribute_label( $attribute->get_name(), $product ),
				'taxonomy'       => $attribute->is_taxonomy() ? $attribute->get_name() : null,
				'has_variations' => true === $attribute->get_variation(),
				'terms'          => $terms,
			];
		}

		return $return;
	}

	/**
	 * Prepare an attribute term for the response.
	 *
	 * @param \WP_Term $term Term object.
	 * @return object
	 */
	protected function prepare_product_attribute_taxonomy_value( \WP_Term $term ) {
		return $this->prepare_product_attribute_value( $term->name, $term->term_id, $term->slug );
	}

	/**
	 * Prepare an attribute term for the response.
	 *
	 * @param string $name Attribute term name.
	 * @param int    $id Attribute term ID.
	 * @param string $slug Attribute term slug.
	 * @return object
	 */
	protected function prepare_product_attribute_value( $name, $id = 0, $slug = '' ) {
		return (object) [
			'id'   => (int) $id,
			'name' => $name,
			'slug' => $slug ? $slug : $name,
		];
	}

	/**
	 * Get an array of pricing data.
	 *
	 * @param \WC_Product $product Product instance.
	 * @param string      $tax_display_mode If returned prices are incl or excl of tax.
	 * @return array
	 */
	protected function prepare_product_price_response( \WC_Product $product, $tax_display_mode = '' ) {
		$prices           = [];
		$tax_display_mode = $this->get_tax_display_mode( $tax_display_mode );
		$price_function   = $this->get_price_function_from_tax_display_mode( $tax_display_mode );

		// If we have a variable product, get the price from the variations (this will use the min value).
		if ( $product->is_type( 'variable' ) ) {
			$regular_price = $product->get_variation_regular_price();
			$sale_price    = $product->get_variation_sale_price();
		} else {
			$regular_price = $product->get_regular_price();
			$sale_price    = $product->get_sale_price();
		}

		$prices['price']         = $this->prepare_money_response( $price_function( $product ), wc_get_price_decimals() );
		$prices['regular_price'] = $this->prepare_money_response( $price_function( $product, [ 'price' => $regular_price ] ), wc_get_price_decimals() );
		$prices['sale_price']    = $this->prepare_money_response( $price_function( $product, [ 'price' => $sale_price ] ), wc_get_price_decimals() );
		$prices['price_range']   = $this->get_price_range( $product, $tax_display_mode );

		return $this->prepare_currency_response( $prices );
	}

	/**
	 * WooCommerce can return prices including or excluding tax; choose the correct method based on tax display mode.
	 *
	 * @param string $tax_display_mode Provided tax display mode.
	 * @return string Valid tax display mode.
	 */
	protected function get_tax_display_mode( $tax_display_mode = '' ) {
		return in_array( $tax_display_mode, [ 'incl', 'excl' ], true ) ? $tax_display_mode : get_option( 'woocommerce_tax_display_shop' );
	}

	/**
	 * WooCommerce can return prices including or excluding tax; choose the correct method based on tax display mode.
	 *
	 * @param string $tax_display_mode If returned prices are incl or excl of tax.
	 * @return string Function name.
	 */
	protected function get_price_function_from_tax_display_mode( $tax_display_mode ) {
		return 'incl' === $tax_display_mode ? 'wc_get_price_including_tax' : 'wc_get_price_excluding_tax';
	}

	/**
	 * Get price range from certain product types.
	 *
	 * @param \WC_Product $product Product instance.
	 * @param string      $tax_display_mode If returned prices are incl or excl of tax.
	 * @return object|null
	 */
	protected function get_price_range( \WC_Product $product, $tax_display_mode = '' ) {
		$tax_display_mode = $this->get_tax_display_mode( $tax_display_mode );

		if ( $product->is_type( 'variable' ) ) {
			$prices = $product->get_variation_prices( true );

			if ( ! empty( $prices['price'] ) && ( min( $prices['price'] ) !== max( $prices['price'] ) ) ) {
				return (object) [
					'min_amount' => $this->prepare_money_response( min( $prices['price'] ), wc_get_price_decimals() ),
					'max_amount' => $this->prepare_money_response( max( $prices['price'] ), wc_get_price_decimals() ),
				];
			}
		}

		if ( $product->is_type( 'grouped' ) ) {
			$children       = array_filter( array_map( 'wc_get_product', $product->get_children() ), 'wc_products_array_filter_visible_grouped' );
			$price_function = 'incl' === $tax_display_mode ? 'wc_get_price_including_tax' : 'wc_get_price_excluding_tax';

			foreach ( $children as $child ) {
				if ( '' !== $child->get_price() ) {
					$child_prices[] = $price_function( $child );
				}
			}

			if ( ! empty( $child_prices ) ) {
				return (object) [
					'min_amount' => $this->prepare_money_response( min( $child_prices ), wc_get_price_decimals() ),
					'max_amount' => $this->prepare_money_response( max( $child_prices ), wc_get_price_decimals() ),
				];
			}
		}

		return null;
	}

	/**
	 * Returns a list of terms assigned to the product.
	 *
	 * @param \WC_Product $product Product object.
	 * @param string      $taxonomy Taxonomy name.
	 * @return array Array of terms (id, name, slug).
	 */
	protected function get_term_list( \WC_Product $product, $taxonomy = '' ) {
		if ( ! $taxonomy ) {
			return [];
		}

		$terms = get_the_terms( $product->get_id(), $taxonomy );

		if ( ! $terms || is_wp_error( $terms ) ) {
			return [];
		}

		$return           = [];
		$default_category = (int) get_option( 'default_product_cat', 0 );

		foreach ( $terms as $term ) {
			$link = get_term_link( $term, $taxonomy );

			if ( is_wp_error( $link ) ) {
				continue;
			}

			if ( $term->term_id === $default_category ) {
				continue;
			}

			$return[] = (object) [
				'id'   => $term->term_id,
				'name' => $term->name,
				'slug' => $term->slug,
				'link' => $link,
			];
		}

		return $return;
	}
}