464 lines
13 KiB
PHP
464 lines
13 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 2.3.0
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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; // Exit if accessed directly
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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;
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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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$this->init();
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}
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/**
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* init function.
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*/
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public function init() {
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do_action( 'woocommerce_shipping_init' );
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$this->enabled = ( get_option('woocommerce_calc_shipping') == 'no' ) ? false : true;
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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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return 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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'international_delivery' => 'WC_Shipping_International_Delivery',
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'local_delivery' => 'WC_Shipping_Local_Delivery',
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'local_pickup' => 'WC_Shipping_Local_Pickup'
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) );
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}
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/**
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* load_shipping_methods function.
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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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* Methods are sorted into their user-defined order after being loaded.
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*
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* @access public
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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( $package = array() ) {
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$this->unregister_shipping_methods();
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// Methods can register themselves through this hook
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do_action( 'woocommerce_load_shipping_methods', $package );
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// Register methods through a filter
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$shipping_methods_to_load = $this->get_shipping_method_class_names();
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foreach ( $shipping_methods_to_load as $method ) {
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$this->register_shipping_method( $method );
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}
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$this->sort_shipping_methods();
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return $this->shipping_methods;
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}
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/**
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* Register a shipping method for use in calculations.
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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( $method ) ) {
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$method = new $method();
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}
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$id = empty( $method->instance_id ) ? $method->id : $method->instance_id;
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$this->shipping_methods[ $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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* Sort shipping methods.
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*
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* Sorts shipping methods into the user defined order.
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*
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* @return array
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*/
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public function sort_shipping_methods() {
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$sorted_shipping_methods = array();
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// Get order option
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$ordering = (array) get_option('woocommerce_shipping_method_order');
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$order_end = 999;
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// Load shipping methods in order
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foreach ( $this->shipping_methods as $method ) {
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if ( isset( $ordering[ $method->id ] ) && is_numeric( $ordering[ $method->id ] ) ) {
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// Add in position
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$sorted_shipping_methods[ $ordering[ $method->id ] ][] = $method;
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} else {
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// Add to end of the array
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$sorted_shipping_methods[ $order_end ][] = $method;
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}
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}
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ksort( $sorted_shipping_methods );
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$this->shipping_methods = array();
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foreach ( $sorted_shipping_methods as $methods )
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foreach ( $methods as $method ) {
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$id = empty( $method->instance_id ) ? $method->id : $method->instance_id;
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$this->shipping_methods[ $id ] = $method;
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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_shipping_methods function.
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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_shipping_classes function.
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*
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* Load shipping classes taxonomy terms.
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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' ) );
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$this->shipping_classes = $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, $current_chosen_method = false ) {
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$selection_priority = get_option( 'woocommerce_shipping_method_selection_priority', array() );
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if ( ! empty( $available_methods ) ) {
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// Is a method already chosen?
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if ( ! empty( $current_chosen_method ) && ! isset( $available_methods[ $current_chosen_method ] ) ) {
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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 $method->id;
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}
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}
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}
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// Order by priorities and costs
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$prioritized_methods = array();
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foreach ( $available_methods as $method_key => $method ) {
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// Some IDs contain : if they have multiple rates so use $method->method_id
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$priority = isset( $selection_priority[ $method->method_id ] ) ? absint( $selection_priority[ $method->method_id ] ): 1;
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if ( empty( $prioritized_methods[ $priority ] ) ) {
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$prioritized_methods[ $priority ] = array();
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}
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$prioritized_methods[ $priority ][ $method_key ] = $method->cost;
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}
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ksort( $prioritized_methods );
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$prioritized_methods = current( $prioritized_methods );
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asort( $prioritized_methods );
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return current( array_keys( $prioritized_methods ) );
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}
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return false;
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}
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/**
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* calculate_shipping function.
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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( $packages ) ) {
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return;
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}
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// Calculate costs for passed packages
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$package_keys = array_keys( $packages );
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$package_keys_size = sizeof( $package_keys );
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for ( $i = 0; $i < $package_keys_size; $i ++ ) {
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$this->packages[ $package_keys[ $i ] ] = $this->calculate_shipping_for_package( $packages[ $package_keys[ $i ] ] );
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}
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// Get all chosen methods
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$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 = $method_counts[ $i ];
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}
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// Get available methods for package
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$available_methods = $package['rates'];
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if ( sizeof( $available_methods ) > 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( $available_methods[ $chosen_method ] ) || $method_count != sizeof( $available_methods ) ) {
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$chosen_method = apply_filters( 'woocommerce_shipping_chosen_method', $this->get_default_method( $available_methods, $chosen_method ), $available_methods );
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$chosen_methods[ $i ] = $chosen_method;
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$method_counts[ $i ] = sizeof( $available_methods );
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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 = $available_methods[ $chosen_method ];
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// Merge cost and taxes - label and ID will be the same
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$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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if ( $shipping_method->is_available( $package ) && ( empty( $package['ship_via'] ) || in_array( $shipping_method->id, $package['ship_via'] ) ) ) {
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// Reset Rates
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$shipping_method->rates = array();
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// Calculate Shipping for package
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$shipping_method->calculate_shipping( $package );
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// Place rates in package array
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if ( ! empty( $shipping_method->rates ) && is_array( $shipping_method->rates ) ) {
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foreach ( $shipping_method->rates as $rate ) {
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$package['rates'][ $rate->id ] = $rate;
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}
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}
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}
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}
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// Filter the calculated rates
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$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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*
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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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* Process admin options.
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*
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* Saves options on the shipping setting page.
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*/
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public function process_admin_options() {
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$method_order = isset( $_POST['method_order'] ) ? $_POST['method_order'] : '';
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$method_priority = isset( $_POST['method_priority'] ) ? $_POST['method_priority'] : '';
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$order = array();
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$selection_priority = array();
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if ( is_array( $method_order ) && sizeof( $method_order ) > 0 ) {
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$loop = 0;
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foreach ( $method_order as $method_id ) {
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$order[ $method_id ] = $loop;
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$selection_priority[ $method_id ] = absint( $method_priority[ $method_id ] );
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$loop ++;
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}
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}
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update_option( 'woocommerce_shipping_method_selection_priority', $selection_priority );
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update_option( 'woocommerce_shipping_method_order', $order );
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}
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}
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/**
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* Register a shipping method.
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*
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* Registers a shipping method ready to be loaded. Accepts a class name (string) or a class object.
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*
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* @package WooCommerce/Classes/Shipping
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* @since 1.5.7
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*/
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function woocommerce_register_shipping_method( $shipping_method ) {
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WC()->shipping->register_shipping_method( $shipping_method );
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}
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