365 lines
11 KiB
PHP
365 lines
11 KiB
PHP
<?php
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/**
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* WooCommerce Shipping Class
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*
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* Handles shipping and loads shipping methods via hooks.
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*
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* @class WC_Shipping
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* @version 2.6.0
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* @package WooCommerce/Classes/Shipping
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* @category Class
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* @author WooThemes
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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/**
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* WC_Shipping
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*/
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class WC_Shipping {
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/** @var bool True if shipping is enabled. */
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public $enabled = false;
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/** @var array Stores methods loaded into woocommerce. */
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public $shipping_methods = null;
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/** @var float Stores the cost of shipping */
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public $shipping_total = 0;
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/** @var array Stores an array of shipping taxes. */
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public $shipping_taxes = array();
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/** @var array Stores the shipping classes. */
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public $shipping_classes = array();
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/** @var array Stores packages to ship and to get quotes for. */
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public $packages = array();
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/**
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* @var WC_Shipping The single instance of the class
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* @since 2.1
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*/
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protected static $_instance = null;
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/**
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* Main WC_Shipping Instance.
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*
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* Ensures only one instance of WC_Shipping is loaded or can be loaded.
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*
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* @since 2.1
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* @static
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* @return WC_Shipping Main instance
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*/
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public static function instance() {
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if ( is_null( self::$_instance ) ) {
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self::$_instance = new self();
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}
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return self::$_instance;
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}
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/**
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* Cloning is forbidden.
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*
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* @since 2.1
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*/
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public function __clone() {
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_doing_it_wrong( __FUNCTION__, __( 'Cheatin’ huh?', 'woocommerce' ), '2.1' );
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}
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/**
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* Unserializing instances of this class is forbidden.
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*
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* @since 2.1
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*/
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public function __wakeup() {
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_doing_it_wrong( __FUNCTION__, __( 'Cheatin’ huh?', 'woocommerce' ), '2.1' );
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}
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/**
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* Initialize shipping.
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*/
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public function __construct() {
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$this->enabled = wc_shipping_enabled();
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if ( $this->enabled ) {
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$this->init();
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}
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}
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/**
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* Initialize shipping.
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*/
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public function init() {
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do_action( 'woocommerce_shipping_init' );
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}
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/**
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* Shipping methods register themselves by returning their main class name through the woocommerce_shipping_methods filter.
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* @return array
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*/
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public function get_shipping_method_class_names() {
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// Unique Method ID => Method Class name
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$shipping_methods = apply_filters( 'woocommerce_shipping_methods', array(
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'flat_rate' => 'WC_Shipping_Flat_Rate',
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'free_shipping' => 'WC_Shipping_Free_Shipping',
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'local_pickup' => 'WC_Shipping_Local_Pickup'
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) );
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// For backwards compatibility with 2.5.x we load any ENABLED legacy shipping methods here
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$maybe_load_legacy_methods = array( 'flat_rate', 'free_shipping', 'international_delivery', 'local_delivery', 'local_pickup' );
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foreach ( $maybe_load_legacy_methods as $method ) {
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$options = get_option( 'woocommerce_' . $method . '_settings' );
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if ( $options && isset( $options['enabled'] ) && 'yes' === $options['enabled'] ) {
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$shipping_methods[ 'legacy_' . $method ] = 'WC_Shipping_Legacy_' . $method;
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}
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}
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return $shipping_methods;
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}
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/**
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* Loads all shipping methods which are hooked in. If a $package is passed some methods may add themselves conditionally.
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*
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* Loads all shipping methods which are hooked in.
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* If a $package is passed some methods may add themselves conditionally and zones will be used.
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*
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* @param array $package
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* @return array
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*/
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public function load_shipping_methods( $package = array() ) {
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if ( $package ) {
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$shipping_zone = WC_Shipping_Zones::get_zone_matching_package( $package );
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$this->shipping_methods = $shipping_zone->get_shipping_methods();
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} else {
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$this->shipping_methods = array();
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}
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// For the settings in the backend, and for non-shipping zone methods, we still need to load any registered classes here.
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foreach ( $this->get_shipping_method_class_names() as $method_id => $method_class ) {
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$this->register_shipping_method( $method_class );
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}
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// Methods can register themselves manually through this hook if necessary.
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do_action( 'woocommerce_load_shipping_methods', $package );
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// Return loaded methods
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return $this->get_shipping_methods();
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}
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/**
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* Register a shipping method.
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*
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* @param object|string $method Either the name of the method's class, or an instance of the method's class.
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*/
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public function register_shipping_method( $method ) {
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if ( ! is_object( $method ) ) {
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if ( ! class_exists( $method ) ) {
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return false;
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}
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$method = new $method();
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}
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$this->shipping_methods[ $method->id ] = $method;
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}
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/**
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* Unregister shipping methods.
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*/
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public function unregister_shipping_methods() {
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$this->shipping_methods = array();
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}
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/**
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* Returns all registered shipping methods for usage.
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*
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* @access public
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* @return array
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*/
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public function get_shipping_methods() {
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if ( is_null( $this->shipping_methods ) ) {
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$this->load_shipping_methods();
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}
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return $this->shipping_methods;
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}
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/**
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* Get an array of shipping classes.
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*
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* @access public
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* @return array
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*/
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public function get_shipping_classes() {
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if ( empty( $this->shipping_classes ) ) {
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$classes = get_terms( 'product_shipping_class', array( 'hide_empty' => '0', 'orderby' => 'name' ) );
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$this->shipping_classes = ! is_wp_error( $classes ) ? $classes : array();
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}
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return $this->shipping_classes;
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}
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/**
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* Get the default method.
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* @param array $available_methods
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* @param boolean $current_chosen_method
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* @return string
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*/
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private function get_default_method( $available_methods, $current_chosen_method = false ) {
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if ( ! empty( $available_methods ) ) {
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if ( ! empty( $current_chosen_method ) ) {
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if ( isset( $available_methods[ $current_chosen_method ] ) ) {
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return $available_methods[ $current_chosen_method ]->id;
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} else {
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foreach ( $available_methods as $method_key => $method ) {
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if ( strpos( $method->id, $current_chosen_method ) === 0 ) {
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return $method->id;
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}
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}
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}
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}
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return current( $available_methods )->id;
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}
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return '';
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}
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/**
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* Calculate shipping for (multiple) packages of cart items.
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*
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* @param array $packages multi-dimensional array of cart items to calc shipping for
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*/
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public function calculate_shipping( $packages = array() ) {
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$this->shipping_total = null;
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$this->shipping_taxes = array();
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$this->packages = array();
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if ( ! $this->enabled || empty( $packages ) ) {
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return;
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}
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// Calculate costs for passed packages
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foreach ( $packages as $package_key => $package ) {
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$this->packages[ $package_key ] = $this->calculate_shipping_for_package( $package );
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}
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// Get all chosen methods
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$chosen_methods = WC()->session->get( 'chosen_shipping_methods' );
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$method_counts = WC()->session->get( 'shipping_method_counts' );
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// Get chosen methods for each package
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foreach ( $this->packages as $i => $package ) {
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$chosen_method = false;
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$method_count = false;
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if ( ! empty( $chosen_methods[ $i ] ) ) {
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$chosen_method = $chosen_methods[ $i ];
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}
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if ( ! empty( $method_counts[ $i ] ) ) {
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$method_count = absint( $method_counts[ $i ] );
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}
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if ( sizeof( $package['rates'] ) > 0 ) {
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// If not set, not available, or available methods have changed, set to the DEFAULT option
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if ( empty( $chosen_method ) || ! isset( $package['rates'][ $chosen_method ] ) || $method_count !== sizeof( $package['rates'] ) ) {
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$chosen_method = apply_filters( 'woocommerce_shipping_chosen_method', $this->get_default_method( $package['rates'], $chosen_method ), $package['rates'] );
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$chosen_methods[ $i ] = $chosen_method;
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$method_counts[ $i ] = sizeof( $package['rates'] );
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do_action( 'woocommerce_shipping_method_chosen', $chosen_method );
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}
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// Store total costs
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if ( $chosen_method ) {
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$rate = $package['rates'][ $chosen_method ];
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// Merge cost and taxes - label and ID will be the same
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$this->shipping_total += $rate->cost;
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if ( ! empty( $rate->taxes ) && is_array( $rate->taxes ) ) {
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foreach ( array_keys( $this->shipping_taxes + $rate->taxes ) as $key ) {
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$this->shipping_taxes[ $key ] = ( isset( $rate->taxes[$key] ) ? $rate->taxes[$key] : 0 ) + ( isset( $this->shipping_taxes[$key] ) ? $this->shipping_taxes[$key] : 0 );
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}
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}
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}
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}
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}
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// Save all chosen methods (array)
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WC()->session->set( 'chosen_shipping_methods', $chosen_methods );
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WC()->session->set( 'shipping_method_counts', $method_counts );
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}
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/**
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* Calculate shipping rates for a package,
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*
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* Calculates each shipping methods cost. Rates are stored in the session based on the package hash to avoid re-calculation every page load.
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*
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* @param array $package cart items
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* @return array
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*/
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public function calculate_shipping_for_package( $package = array() ) {
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if ( ! $this->enabled || ! $package ) {
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return false;
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}
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// Check if we need to recalculate shipping for this package
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$package_hash = 'wc_ship_' . md5( json_encode( $package ) . WC_Cache_Helper::get_transient_version( 'shipping' ) );
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$status_options = get_option( 'woocommerce_status_options', array() );
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$stored_rates = WC()->session->get( 'shipping_for_package' );
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if ( ! is_array( $stored_rates ) || $package_hash !== $stored_rates['package_hash'] || ! empty( $status_options['shipping_debug_mode'] ) ) {
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// Calculate shipping method rates
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$package['rates'] = array();
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foreach ( $this->load_shipping_methods( $package ) as $shipping_method ) {
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// Shipping instances need an ID
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if ( ! $shipping_method->supports( 'shipping-zones' ) || $shipping_method->get_instance_id() ) {
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$package['rates'] = $package['rates'] + $shipping_method->get_rates_for_package( $package ); // + instead of array_merge maintains numeric keys
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}
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}
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// Filter the calculated rates
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$package['rates'] = apply_filters( 'woocommerce_package_rates', $package['rates'], $package );
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// Store in session to avoid recalculation
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WC()->session->set( 'shipping_for_package', array(
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'package_hash' => $package_hash,
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'rates' => $package['rates']
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) );
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} else {
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$package['rates'] = $stored_rates['rates'];
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}
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return $package;
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}
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/**
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* Get packages.
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* @return array
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*/
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public function get_packages() {
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return $this->packages;
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}
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/**
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* Reset shipping.
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*
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* Reset the totals for shipping as a whole.
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*/
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public function reset_shipping() {
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unset( WC()->session->chosen_shipping_methods );
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$this->shipping_total = null;
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$this->shipping_taxes = array();
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$this->packages = array();
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}
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/**
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* @deprecated 2.6.0 Was previously used to determine sort order of methods, but this is now controlled by zones and thus unused.
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*/
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public function sort_shipping_methods() {
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_deprecated_function( 'sort_shipping_methods', '2.6', '' );
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return $this->shipping_methods;
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}
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}
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