<?php
namespace Automattic\WooCommerce\StoreApi\Utilities;
use WC_Tax;
/**
* Product Query class.
*
* Helper class to handle product queries for the API.
*/
class ProductQuery {
/**
* Prepare query args to pass to WP_Query for a REST API request.
*
* @param \WP_REST_Request $request Request data.
* @return array
*/
public function prepare_objects_query( $request ) {
$args = [
'offset' => $request['offset'],
'order' => $request['order'],
'orderby' => $request['orderby'],
'paged' => $request['page'],
'post__in' => $request['include'],
'post__not_in' => $request['exclude'],
'posts_per_page' => $request['per_page'] ? $request['per_page'] : -1,
'post_parent__in' => $request['parent'],
'post_parent__not_in' => $request['parent_exclude'],
'search' => $request['search'], // This uses search rather than s intentionally to handle searches internally.
'slug' => $request['slug'],
'fields' => 'ids',
'ignore_sticky_posts' => true,
'post_status' => 'publish',
'date_query' => [],
'post_type' => 'product',
];
// If searching for a specific SKU or slug, allow any post type.
if ( ! empty( $request['sku'] ) || ! empty( $request['slug'] ) ) {
$args['post_type'] = [ 'product', 'product_variation' ];
}
// Taxonomy query to filter products by type, category, tag, shipping class, and attribute.
$tax_query = [];
// Filter product type by slug.
if ( ! empty( $request['type'] ) ) {
if ( 'variation' === $request['type'] ) {
$args['post_type'] = 'product_variation';
} else {
$args['post_type'] = 'product';
$tax_query[] = [
'taxonomy' => 'product_type',
'field' => 'slug',
'terms' => $request['type'],
];
}
}
if ( 'date' === $args['orderby'] ) {
$args['orderby'] = 'date ID';
}
// Set before into date query. Date query must be specified as an array of an array.
if ( isset( $request['before'] ) ) {
$args['date_query'][0]['before'] = $request['before'];
}
// Set after into date query. Date query must be specified as an array of an array.
if ( isset( $request['after'] ) ) {
$args['date_query'][0]['after'] = $request['after'];
}
// Set date query column. Defaults to post_date.
if ( isset( $request['date_column'] ) && ! empty( $args['date_query'][0] ) ) {
$args['date_query'][0]['column'] = 'post_' . $request['date_column'];
}
// Set custom args to handle later during clauses.
$custom_keys = [
'sku',
'min_price',
'max_price',
'stock_status',
];
foreach ( $custom_keys as $key ) {
if ( ! empty( $request[ $key ] ) ) {
$args[ $key ] = $request[ $key ];
}
}
$operator_mapping = [
'in' => 'IN',
'not_in' => 'NOT IN',
'and' => 'AND',
];
// Gets all registered product taxonomies and prefixes them with `tax_`.
// This is needed to avoid situations where a user registers a new product taxonomy with the same name as default field.
// eg an `sku` taxonomy will be mapped to `tax_sku`.
$all_product_taxonomies = array_map(
function ( $value ) {
return '_unstable_tax_' . $value;
},
get_taxonomies( array( 'object_type' => array( 'product' ) ), 'names' )
);
// Map between taxonomy name and arg key.
$default_taxonomies = [
'product_cat' => 'category',
'product_tag' => 'tag',
];
$taxonomies = array_merge( $all_product_taxonomies, $default_taxonomies );
// Set tax_query for each passed arg.
foreach ( $taxonomies as $taxonomy => $key ) {
if ( ! empty( $request[ $key ] ) ) {
$operator = $request->get_param( $key . '_operator' ) && isset( $operator_mapping[ $request->get_param( $key . '_operator' ) ] ) ? $operator_mapping[ $request->get_param( $key . '_operator' ) ] : 'IN';
$tax_query[] = [
'taxonomy' => $taxonomy,
'field' => 'term_id',
'terms' => $request[ $key ],
'operator' => $operator,
];
}
}
// Filter by attributes.
if ( ! empty( $request['attributes'] ) ) {
$att_queries = [];
foreach ( $request['attributes'] as $attribute ) {
if ( empty( $attribute['term_id'] ) && empty( $attribute['slug'] ) ) {
continue;
}
if ( in_array( $attribute['attribute'], wc_get_attribute_taxonomy_names(), true ) ) {
$operator = isset( $attribute['operator'], $operator_mapping[ $attribute['operator'] ] ) ? $operator_mapping[ $attribute['operator'] ] : 'IN';
$att_queries[] = [
'taxonomy' => $attribute['attribute'],
'field' => ! empty( $attribute['term_id'] ) ? 'term_id' : 'slug',
'terms' => ! empty( $attribute['term_id'] ) ? $attribute['term_id'] : $attribute['slug'],
'operator' => $operator,
];
}
}
if ( 1 < count( $att_queries ) ) {
// Add relation arg when using multiple attributes.
$relation = $request->get_param( 'attribute_relation' ) && isset( $operator_mapping[ $request->get_param( 'attribute_relation' ) ] ) ? $operator_mapping[ $request->get_param( 'attribute_relation' ) ] : 'IN';
$tax_query[] = [
'relation' => $relation,
$att_queries,
];
} else {
$tax_query = array_merge( $tax_query, $att_queries );
}
}
// Build tax_query if taxonomies are set.
if ( ! empty( $tax_query ) && 'product_variation' !== $args['post_type'] ) {
if ( ! empty( $args['tax_query'] ) ) {
$args['tax_query'] = array_merge( $tax_query, $args['tax_query'] ); // phpcs:ignore
} else {
$args['tax_query'] = $tax_query; // phpcs:ignore
}
} else {
// For product_variantions we need to convert the tax_query to a meta_query.
if ( ! empty( $args['tax_query'] ) ) {
$args['meta_query'] = $this->convert_tax_query_to_meta_query( array_merge( $tax_query, $args['tax_query'] ) ); // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
} else {
$args['meta_query'] = $this->convert_tax_query_to_meta_query( $tax_query ); // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
}
}
// Filter featured.
if ( is_bool( $request['featured'] ) ) {
$args['tax_query'][] = [
'taxonomy' => 'product_visibility',
'field' => 'name',
'terms' => 'featured',
'operator' => true === $request['featured'] ? 'IN' : 'NOT IN',
];
}
// Filter by on sale products.
if ( is_bool( $request['on_sale'] ) ) {
$on_sale_key = $request['on_sale'] ? 'post__in' : 'post__not_in';
$on_sale_ids = wc_get_product_ids_on_sale();
// Use 0 when there's no on sale products to avoid return all products.
$on_sale_ids = empty( $on_sale_ids ) ? [ 0 ] : $on_sale_ids;
$args[ $on_sale_key ] += $on_sale_ids;
}
$catalog_visibility = $request->get_param( 'catalog_visibility' );
$rating = $request->get_param( 'rating' );
$visibility_options = wc_get_product_visibility_options();
if ( in_array( $catalog_visibility, array_keys( $visibility_options ), true ) ) {
$exclude_from_catalog = 'search' === $catalog_visibility ? '' : 'exclude-from-catalog';
$exclude_from_search = 'catalog' === $catalog_visibility ? '' : 'exclude-from-search';
$args['tax_query'][] = [
'taxonomy' => 'product_visibility',
'field' => 'name',
'terms' => [ $exclude_from_catalog, $exclude_from_search ],
'operator' => 'hidden' === $catalog_visibility ? 'AND' : 'NOT IN',
'rating_filter' => true,
];
}
if ( $rating ) {
$rating_terms = [];
foreach ( $rating as $value ) {
$rating_terms[] = 'rated-' . $value;
}
$args['tax_query'][] = [
'taxonomy' => 'product_visibility',
'field' => 'name',
'terms' => $rating_terms,
];
}
$orderby = $request->get_param( 'orderby' );
$order = $request->get_param( 'order' );
$ordering_args = wc()->query->get_catalog_ordering_args( $orderby, $order );
$args['orderby'] = $ordering_args['orderby'];
$args['order'] = $ordering_args['order'];
if ( 'include' === $orderby ) {
$args['orderby'] = 'post__in';
} elseif ( 'id' === $orderby ) {
$args['orderby'] = 'ID'; // ID must be capitalized.
} elseif ( 'slug' === $orderby ) {
$args['orderby'] = 'name';
}
if ( $ordering_args['meta_key'] ) {
$args['meta_key'] = $ordering_args['meta_key']; // phpcs:ignore
}
return $args;
}
/**
* Convert the tax_query to a meta_query which is needed to support filtering by attributes for variations.
*
* @param array $tax_query The tax_query to convert.
* @return array
*/
public function convert_tax_query_to_meta_query( $tax_query ) {
$meta_query = array();
foreach ( $tax_query as $tax_query_item ) {
$taxonomy = $tax_query_item['taxonomy'];
$terms = $tax_query_item['terms'];
$meta_key = 'attribute_' . $taxonomy;
$meta_query[] = array(
'key' => $meta_key,
'value' => $terms,
);
if ( isset( $tax_query_item['operator'] ) ) {
$meta_query[0]['compare'] = $tax_query_item['operator'];
}
}
return $meta_query;
}
/**
* Get results of query.
*
* @param \WP_REST_Request $request Request data.
* @return array
*/
public function get_results( $request ) {
$query_args = $this->prepare_objects_query( $request );
add_filter( 'posts_clauses', [ $this, 'add_query_clauses' ], 10, 2 );
$query = new \WP_Query();
$results = $query->query( $query_args );
$total_posts = $query->found_posts;
// Out-of-bounds, run the query again without LIMIT for total count.
if ( $total_posts < 1 && $query_args['paged'] > 1 ) {
unset( $query_args['paged'] );
$count_query = new \WP_Query();
$count_query->query( $query_args );
$total_posts = $count_query->found_posts;
}
remove_filter( 'posts_clauses', [ $this, 'add_query_clauses' ], 10 );
return [
'results' => $results,
'total' => (int) $total_posts,
'pages' => $query->query_vars['posts_per_page'] > 0 ? (int) ceil( $total_posts / (int) $query->query_vars['posts_per_page'] ) : 1,
];
}
/**
* Get objects.
*
* @param \WP_REST_Request $request Request data.
* @return array
*/
public function get_objects( $request ) {
$results = $this->get_results( $request );
return [
'objects' => array_map( 'wc_get_product', $results['results'] ),
'total' => $results['total'],
'pages' => $results['pages'],
];
}
/**
* Get last modified date for all products.
*
* @return int timestamp.
*/
public function get_last_modified() {
global $wpdb;
return strtotime( $wpdb->get_var( "SELECT MAX( post_modified_gmt ) FROM {$wpdb->posts} WHERE post_type IN ( 'product', 'product_variation' );" ) );
}
/**
* Add in conditional search filters for products.
*
* @param array $args Query args.
* @param \WC_Query $wp_query WC_Query object.
* @return array
*/
public function add_query_clauses( $args, $wp_query ) {
global $wpdb;
if ( $wp_query->get( 'search' ) ) {
$search = '%' . $wpdb->esc_like( $wp_query->get( 'search' ) ) . '%';
$search_query = wc_product_sku_enabled()
? $wpdb->prepare( " AND ( $wpdb->posts.post_title LIKE %s OR wc_product_meta_lookup.sku LIKE %s ) ", $search, $search )
: $wpdb->prepare( " AND $wpdb->posts.post_title LIKE %s ", $search );
$args['where'] .= $search_query;
$args['join'] = $this->append_product_sorting_table_join( $args['join'] );
}
if ( $wp_query->get( 'sku' ) ) {
$skus = explode( ',', $wp_query->get( 'sku' ) );
// Include the current string as a SKU too.
if ( 1 < count( $skus ) ) {
$skus[] = $wp_query->get( 'sku' );
}
$args['join'] = $this->append_product_sorting_table_join( $args['join'] );
$args['where'] .= ' AND wc_product_meta_lookup.sku IN ("' . implode( '","', array_map( 'esc_sql', $skus ) ) . '")';
}
if ( $wp_query->get( 'slug' ) ) {
$slugs = explode( ',', $wp_query->get( 'slug' ) );
// Include the current string as a slug too.
if ( 1 < count( $slugs ) ) {
$slugs[] = $wp_query->get( 'slug' );
}
$args['join'] = $this->append_product_sorting_table_join( $args['join'] );
$post_name__in = implode( '","', array_map( 'esc_sql', $slugs ) );
$args['where'] .= " AND $wpdb->posts.post_name IN (\"$post_name__in\")";
}
if ( $wp_query->get( 'stock_status' ) ) {
$args['join'] = $this->append_product_sorting_table_join( $args['join'] );
$args['where'] .= ' AND wc_product_meta_lookup.stock_status IN ("' . implode( '","', array_map( 'esc_sql', $wp_query->get( 'stock_status' ) ) ) . '")';
} elseif ( 'yes' === get_option( 'woocommerce_hide_out_of_stock_items' ) ) {
$args['join'] = $this->append_product_sorting_table_join( $args['join'] );
$args['where'] .= ' AND wc_product_meta_lookup.stock_status NOT IN ("outofstock")';
}
if ( $wp_query->get( 'min_price' ) || $wp_query->get( 'max_price' ) ) {
$args = $this->add_price_filter_clauses( $args, $wp_query );
}
return $args;
}
/**
* Add in conditional price filters.
*
* @param array $args Query args.
* @param \WC_Query $wp_query WC_Query object.
* @return array
*/
protected function add_price_filter_clauses( $args, $wp_query ) {
global $wpdb;
$adjust_for_taxes = $this->adjust_price_filters_for_displayed_taxes();
$args['join'] = $this->append_product_sorting_table_join( $args['join'] );
if ( $wp_query->get( 'min_price' ) ) {
$min_price_filter = $this->prepare_price_filter( $wp_query->get( 'min_price' ) );
if ( $adjust_for_taxes ) {
$args['where'] .= $this->get_price_filter_query_for_displayed_taxes( $min_price_filter, 'max_price', '>=' );
} else {
$args['where'] .= $wpdb->prepare( ' AND wc_product_meta_lookup.max_price >= %f ', $min_price_filter );
}
}
if ( $wp_query->get( 'max_price' ) ) {
$max_price_filter = $this->prepare_price_filter( $wp_query->get( 'max_price' ) );
if ( $adjust_for_taxes ) {
$args['where'] .= $this->get_price_filter_query_for_displayed_taxes( $max_price_filter, 'min_price', '<=' );
} else {
$args['where'] .= $wpdb->prepare( ' AND wc_product_meta_lookup.min_price <= %f ', $max_price_filter );
}
}
return $args;
}
/**
* Get query for price filters when dealing with displayed taxes.
*
* @param float $price_filter Price filter to apply.
* @param string $column Price being filtered (min or max).
* @param string $operator Comparison operator for column.
* @return string Constructed query.
*/
protected function get_price_filter_query_for_displayed_taxes( $price_filter, $column = 'min_price', $operator = '>=' ) {
global $wpdb;
// Select only used tax classes to avoid unwanted calculations.
$product_tax_classes = $wpdb->get_col( "SELECT DISTINCT tax_class FROM {$wpdb->wc_product_meta_lookup};" );
if ( empty( $product_tax_classes ) ) {
return '';
}
$or_queries = [];
// We need to adjust the filter for each possible tax class and combine the queries into one.
foreach ( $product_tax_classes as $tax_class ) {
$adjusted_price_filter = $this->adjust_price_filter_for_tax_class( $price_filter, $tax_class );
$or_queries[] = $wpdb->prepare(
'( wc_product_meta_lookup.tax_class = %s AND wc_product_meta_lookup.`' . esc_sql( $column ) . '` ' . esc_sql( $operator ) . ' %f )',
$tax_class,
$adjusted_price_filter
);
}
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQL.NotPrepared
return $wpdb->prepare(
' AND (
wc_product_meta_lookup.tax_status = "taxable" AND ( 0=1 OR ' . implode( ' OR ', $or_queries ) . ')
OR ( wc_product_meta_lookup.tax_status != "taxable" AND wc_product_meta_lookup.`' . esc_sql( $column ) . '` ' . esc_sql( $operator ) . ' %f )
) ',
$price_filter
);
// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQL.NotPrepared
}
/**
* If price filters need adjustment to work with displayed taxes, this returns true.
*
* This logic is used when prices are stored in the database differently to how they are being displayed, with regards
* to taxes.
*
* @return boolean
*/
protected function adjust_price_filters_for_displayed_taxes() {
$display = get_option( 'woocommerce_tax_display_shop' );
$database = wc_prices_include_tax() ? 'incl' : 'excl';
return $display !== $database;
}
/**
* Converts price filter from subunits to decimal.
*
* @param string|int $price_filter Raw price filter in subunit format.
* @return float Price filter in decimal format.
*/
protected function prepare_price_filter( $price_filter ) {
return floatval( $price_filter / ( 10 ** wc_get_price_decimals() ) );
}
/**
* Adjusts a price filter based on a tax class and whether or not the amount includes or excludes taxes.
*
* This calculation logic is based on `wc_get_price_excluding_tax` and `wc_get_price_including_tax` in core.
*
* @param float $price_filter Price filter amount as entered.
* @param string $tax_class Tax class for adjustment.
* @return float
*/
protected function adjust_price_filter_for_tax_class( $price_filter, $tax_class ) {
$tax_display = get_option( 'woocommerce_tax_display_shop' );
$tax_rates = WC_Tax::get_rates( $tax_class );
$base_tax_rates = WC_Tax::get_base_tax_rates( $tax_class );
// If prices are shown incl. tax, we want to remove the taxes from the filter amount to match prices stored excl. tax.
if ( 'incl' === $tax_display ) {
/**
* Filters if taxes should be removed from locations outside the store base location.
*
* The woocommerce_adjust_non_base_location_prices filter can stop base taxes being taken off when dealing
* with out of base locations. e.g. If a product costs 10 including tax, all users will pay 10
* regardless of location and taxes.
*
* @since 2.6.0
*
* @internal Matches filter name in WooCommerce core.
*
* @param boolean $adjust_non_base_location_prices True by default.
* @return boolean
*/
$taxes = apply_filters( 'woocommerce_adjust_non_base_location_prices', true ) ? WC_Tax::calc_tax( $price_filter, $base_tax_rates, true ) : WC_Tax::calc_tax( $price_filter, $tax_rates, true );
return $price_filter - array_sum( $taxes );
}
// If prices are shown excl. tax, add taxes to match the prices stored in the DB.
$taxes = WC_Tax::calc_tax( $price_filter, $tax_rates, false );
return $price_filter + array_sum( $taxes );
}
/**
* Join wc_product_meta_lookup to posts if not already joined.
*
* @param string $sql SQL join.
* @return string
*/
protected function append_product_sorting_table_join( $sql ) {
global $wpdb;
if ( ! strstr( $sql, 'wc_product_meta_lookup' ) ) {
$sql .= " LEFT JOIN {$wpdb->wc_product_meta_lookup} wc_product_meta_lookup ON $wpdb->posts.ID = wc_product_meta_lookup.product_id ";
}
return $sql;
}
}