woocommerce - get minimum and maximum price for current products

woocommerce - minimum and maximum price

function get_filtered_price() {
	global $wpdb;

	$args       = wc()->query->get_main_query();

	$tax_query  = isset( $args->tax_query->queries ) ? $args->tax_query->queries : array();
	$meta_query = isset( $args->query_vars['meta_query'] ) ? $args->query_vars['meta_query'] : array();

	foreach ( $meta_query + $tax_query as $key => $query ) {
		if ( ! empty( $query['price_filter'] ) || ! empty( $query['rating_filter'] ) ) {
			unset( $meta_query[ $key ] );
		}
	}

	$meta_query = new \WP_Meta_Query( $meta_query );
	$tax_query  = new \WP_Tax_Query( $tax_query );

	$meta_query_sql = $meta_query->get_sql( 'post', $wpdb->posts, 'ID' );
	$tax_query_sql  = $tax_query->get_sql( $wpdb->posts, 'ID' );

	$sql  = "SELECT min( FLOOR( price_meta.meta_value ) ) as min_price, max( CEILING( price_meta.meta_value ) ) as max_price FROM {$wpdb->posts} ";
	$sql .= " LEFT JOIN {$wpdb->postmeta} as price_meta ON {$wpdb->posts}.ID = price_meta.post_id " . $tax_query_sql['join'] . $meta_query_sql['join'];
	$sql .= " 	WHERE {$wpdb->posts}.post_type IN ('product')
			AND {$wpdb->posts}.post_status = 'publish'
			AND price_meta.meta_key IN ('_price')
			AND price_meta.meta_value > '' ";
	$sql .= $tax_query_sql['where'] . $meta_query_sql['where'];

	$search = \WC_Query::get_main_search_query_sql();
	if ( $search ) {
		$sql .= ' AND ' . $search;
	}

	$prices = $wpdb->get_row( $sql ); // WPCS: unprepared SQL ok.

	return [
		'min' => floor( $prices->min_price ),
		'max' => ceil( $prices->max_price )
	];
}