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