412 lines
12 KiB
PHP
412 lines
12 KiB
PHP
<?php
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/**
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* Class WC_Shipping_Legacy_Flat_Rate file.
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*
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* @package WooCommerce\Shipping
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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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* Flat Rate Shipping Method.
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*
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* This class is here for backwards compatibility for methods existing before zones existed.
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*
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* @deprecated 2.6.0
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* @version 2.4.0
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* @package WooCommerce\Classes\Shipping
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*/
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class WC_Shipping_Legacy_Flat_Rate extends WC_Shipping_Method {
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/**
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* Cost passed to [fee] shortcode.
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*
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* @var string
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*/
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protected $fee_cost = '';
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/**
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* Constructor.
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*/
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public function __construct() {
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$this->id = 'legacy_flat_rate';
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$this->method_title = __( 'Flat rate (legacy)', 'woocommerce' );
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/* translators: %s: Admin shipping settings URL */
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$this->method_description = '<strong>' . sprintf( __( 'This method is deprecated in 2.6.0 and will be removed in future versions - we recommend disabling it and instead setting up a new rate within your <a href="%s">Shipping zones</a>.', 'woocommerce' ), admin_url( 'admin.php?page=wc-settings&tab=shipping' ) ) . '</strong>';
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$this->init();
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add_action( 'woocommerce_update_options_shipping_' . $this->id, array( $this, 'process_admin_options' ) );
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add_action( 'woocommerce_flat_rate_shipping_add_rate', array( $this, 'calculate_extra_shipping' ), 10, 2 );
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}
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/**
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* Process and redirect if disabled.
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*/
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public function process_admin_options() {
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parent::process_admin_options();
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if ( 'no' === $this->settings['enabled'] ) {
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wp_redirect( admin_url( 'admin.php?page=wc-settings&tab=shipping§ion=options' ) );
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exit;
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}
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}
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/**
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* Return the name of the option in the WP DB.
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*
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* @since 2.6.0
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* @return string
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*/
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public function get_option_key() {
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return $this->plugin_id . 'flat_rate_settings';
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}
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/**
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* Init function.
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*/
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public function init() {
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// Load the settings.
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$this->init_form_fields();
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$this->init_settings();
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// Define user set variables.
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$this->title = $this->get_option( 'title' );
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$this->availability = $this->get_option( 'availability' );
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$this->countries = $this->get_option( 'countries' );
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$this->tax_status = $this->get_option( 'tax_status' );
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$this->cost = $this->get_option( 'cost' );
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$this->type = $this->get_option( 'type', 'class' );
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$this->options = $this->get_option( 'options', false ); // @deprecated 2.4.0
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}
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/**
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* Initialise Settings Form Fields.
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*/
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public function init_form_fields() {
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$this->form_fields = include __DIR__ . '/includes/settings-flat-rate.php';
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}
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/**
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* Evaluate a cost from a sum/string.
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*
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* @param string $sum Sum to evaluate.
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* @param array $args Arguments.
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* @return string
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*/
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protected function evaluate_cost( $sum, $args = array() ) {
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include_once WC()->plugin_path() . '/includes/libraries/class-wc-eval-math.php';
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$locale = localeconv();
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$decimals = array( wc_get_price_decimal_separator(), $locale['decimal_point'], $locale['mon_decimal_point'] );
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$this->fee_cost = $args['cost'];
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// Expand shortcodes.
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add_shortcode( 'fee', array( $this, 'fee' ) );
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$sum = do_shortcode(
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str_replace(
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array(
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'[qty]',
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'[cost]',
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),
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array(
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$args['qty'],
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$args['cost'],
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),
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$sum
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)
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);
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remove_shortcode( 'fee', array( $this, 'fee' ) );
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// Remove whitespace from string.
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$sum = preg_replace( '/\s+/', '', $sum );
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// Remove locale from string.
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$sum = str_replace( $decimals, '.', $sum );
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// Trim invalid start/end characters.
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$sum = rtrim( ltrim( $sum, "\t\n\r\0\x0B+*/" ), "\t\n\r\0\x0B+-*/" );
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// Do the math.
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return $sum ? WC_Eval_Math::evaluate( $sum ) : 0;
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}
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/**
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* Work out fee (shortcode).
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*
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* @param array $atts Shortcode attributes.
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* @return string
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*/
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public function fee( $atts ) {
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$atts = shortcode_atts(
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array(
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'percent' => '',
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'min_fee' => '',
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),
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$atts,
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'fee'
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);
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$calculated_fee = 0;
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if ( $atts['percent'] ) {
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$calculated_fee = $this->fee_cost * ( floatval( $atts['percent'] ) / 100 );
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}
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if ( $atts['min_fee'] && $calculated_fee < $atts['min_fee'] ) {
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$calculated_fee = $atts['min_fee'];
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}
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return $calculated_fee;
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}
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/**
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* Calculate shipping.
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*
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* @param array $package (default: array()).
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*/
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public function calculate_shipping( $package = array() ) {
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$rate = array(
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'id' => $this->id,
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'label' => $this->title,
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'cost' => 0,
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'package' => $package,
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);
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// Calculate the costs.
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$has_costs = false; // True when a cost is set. False if all costs are blank strings.
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$cost = $this->get_option( 'cost' );
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if ( '' !== $cost ) {
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$has_costs = true;
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$rate['cost'] = $this->evaluate_cost(
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$cost,
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array(
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'qty' => $this->get_package_item_qty( $package ),
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'cost' => $package['contents_cost'],
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)
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);
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}
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// Add shipping class costs.
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$found_shipping_classes = $this->find_shipping_classes( $package );
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$highest_class_cost = 0;
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foreach ( $found_shipping_classes as $shipping_class => $products ) {
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// Also handles BW compatibility when slugs were used instead of ids.
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$shipping_class_term = get_term_by( 'slug', $shipping_class, 'product_shipping_class' );
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$class_cost_string = $shipping_class_term && $shipping_class_term->term_id ? $this->get_option( 'class_cost_' . $shipping_class_term->term_id, $this->get_option( 'class_cost_' . $shipping_class, '' ) ) : $this->get_option( 'no_class_cost', '' );
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if ( '' === $class_cost_string ) {
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continue;
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}
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$has_costs = true;
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$class_cost = $this->evaluate_cost(
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$class_cost_string,
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array(
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'qty' => array_sum( wp_list_pluck( $products, 'quantity' ) ),
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'cost' => array_sum( wp_list_pluck( $products, 'line_total' ) ),
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)
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);
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if ( 'class' === $this->type ) {
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$rate['cost'] += $class_cost;
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} else {
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$highest_class_cost = $class_cost > $highest_class_cost ? $class_cost : $highest_class_cost;
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}
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}
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if ( 'order' === $this->type && $highest_class_cost ) {
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$rate['cost'] += $highest_class_cost;
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}
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$rate['package'] = $package;
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// Add the rate.
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if ( $has_costs ) {
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$this->add_rate( $rate );
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}
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/**
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* Developers can add additional flat rates based on this one via this action since @version 2.4.
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*
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* Previously there were (overly complex) options to add additional rates however this was not user.
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* friendly and goes against what Flat Rate Shipping was originally intended for.
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*
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* This example shows how you can add an extra rate based on this flat rate via custom function:
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*
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* add_action( 'woocommerce_flat_rate_shipping_add_rate', 'add_another_custom_flat_rate', 10, 2 );
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*
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* function add_another_custom_flat_rate( $method, $rate ) {
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* $new_rate = $rate;
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* $new_rate['id'] .= ':' . 'custom_rate_name'; // Append a custom ID.
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* $new_rate['label'] = 'Rushed Shipping'; // Rename to 'Rushed Shipping'.
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* $new_rate['cost'] += 2; // Add $2 to the cost.
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*
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* // Add it to WC.
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* $method->add_rate( $new_rate );
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* }.
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*/
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do_action( 'woocommerce_flat_rate_shipping_add_rate', $this, $rate );
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}
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/**
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* Get items in package.
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*
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* @param array $package Package information.
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* @return int
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*/
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public function get_package_item_qty( $package ) {
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$total_quantity = 0;
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foreach ( $package['contents'] as $item_id => $values ) {
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if ( $values['quantity'] > 0 && $values['data']->needs_shipping() ) {
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$total_quantity += $values['quantity'];
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}
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}
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return $total_quantity;
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}
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/**
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* Finds and returns shipping classes and the products with said class.
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*
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* @param mixed $package Package information.
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* @return array
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*/
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public function find_shipping_classes( $package ) {
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$found_shipping_classes = array();
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foreach ( $package['contents'] as $item_id => $values ) {
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if ( $values['data']->needs_shipping() ) {
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$found_class = $values['data']->get_shipping_class();
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if ( ! isset( $found_shipping_classes[ $found_class ] ) ) {
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$found_shipping_classes[ $found_class ] = array();
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}
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$found_shipping_classes[ $found_class ][ $item_id ] = $values;
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}
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}
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return $found_shipping_classes;
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}
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/**
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* Adds extra calculated flat rates.
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*
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* @deprecated 2.4.0
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*
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* Additional rates defined like this:
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* Option Name | Additional Cost [+- Percents%] | Per Cost Type (order, class, or item).
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*
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* @param null $method Deprecated.
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* @param array $rate Rate information.
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*/
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public function calculate_extra_shipping( $method, $rate ) {
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if ( $this->options ) {
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$options = array_filter( (array) explode( "\n", $this->options ) );
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foreach ( $options as $option ) {
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$this_option = array_map( 'trim', explode( WC_DELIMITER, $option ) );
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if ( count( $this_option ) !== 3 ) {
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continue;
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}
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$extra_rate = $rate;
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$extra_rate['id'] = $this->id . ':' . urldecode( sanitize_title( $this_option[0] ) );
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$extra_rate['label'] = $this_option[0];
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$extra_cost = $this->get_extra_cost( $this_option[1], $this_option[2], $rate['package'] );
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if ( is_array( $extra_rate['cost'] ) ) {
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$extra_rate['cost']['order'] = $extra_rate['cost']['order'] + $extra_cost;
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} else {
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$extra_rate['cost'] += $extra_cost;
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}
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$this->add_rate( $extra_rate );
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}
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}
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}
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/**
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* Calculate the percentage adjustment for each shipping rate.
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*
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* @deprecated 2.4.0
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* @param float $cost Cost.
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* @param float $percent_adjustment Percent adjusment.
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* @param string $percent_operator Percent operator.
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* @param float $base_price Base price.
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* @return float
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*/
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public function calc_percentage_adjustment( $cost, $percent_adjustment, $percent_operator, $base_price ) {
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if ( '+' === $percent_operator ) {
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$cost += $percent_adjustment * $base_price;
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} else {
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$cost -= $percent_adjustment * $base_price;
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}
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return $cost;
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}
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/**
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* Get extra cost.
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*
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* @deprecated 2.4.0
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* @param string $cost_string Cost string.
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* @param string $type Type.
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* @param array $package Package information.
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* @return float
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*/
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public function get_extra_cost( $cost_string, $type, $package ) {
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$cost = $cost_string;
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$cost_percent = false;
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// @codingStandardsIgnoreStart
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$pattern =
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'/' . // Start regex.
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'(\d+\.?\d*)' . // Capture digits, optionally capture a `.` and more digits.
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'\s*' . // Match whitespace.
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'(\+|-)' . // Capture the operand.
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'\s*' . // Match whitespace.
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'(\d+\.?\d*)' . // Capture digits, optionally capture a `.` and more digits.
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'\%/'; // Match the percent sign & end regex.
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// @codingStandardsIgnoreEnd
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if ( preg_match( $pattern, $cost_string, $this_cost_matches ) ) {
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$cost_operator = $this_cost_matches[2];
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$cost_percent = $this_cost_matches[3] / 100;
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$cost = $this_cost_matches[1];
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}
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switch ( $type ) {
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case 'class':
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$cost = $cost * count( $this->find_shipping_classes( $package ) );
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break;
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case 'item':
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$cost = $cost * $this->get_package_item_qty( $package );
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break;
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}
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if ( $cost_percent ) {
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switch ( $type ) {
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case 'class':
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$shipping_classes = $this->find_shipping_classes( $package );
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foreach ( $shipping_classes as $shipping_class => $items ) {
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foreach ( $items as $item_id => $values ) {
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$cost = $this->calc_percentage_adjustment( $cost, $cost_percent, $cost_operator, $values['line_total'] );
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}
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}
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break;
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case 'item':
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foreach ( $package['contents'] as $item_id => $values ) {
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if ( $values['data']->needs_shipping() ) {
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$cost = $this->calc_percentage_adjustment( $cost, $cost_percent, $cost_operator, $values['line_total'] );
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}
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}
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break;
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case 'order':
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$cost = $this->calc_percentage_adjustment( $cost, $cost_percent, $cost_operator, $package['contents_cost'] );
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break;
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}
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}
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return $cost;
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}
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}
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