woocommerce/classes/tax.class.php

268 lines
6.4 KiB
PHP

<?php
/**
* Performs tax calculations
*
* @class woocommerce_tax
* @package WooCommerce
* @category Class
* @author WooThemes
*/
class woocommerce_tax {
var $rates;
/**
* Get the current tax class
*
* @return array
*/
function woocommerce_tax() {
$this->rates = $this->get_tax_rates();
}
/**
* Get an array of tax classes
*
* @return array
*/
function get_tax_classes() {
$classes = get_option('woocommerce_tax_classes');
$classes = explode("\n", $classes);
$classes = array_map('trim', $classes);
$classes_array = array();
if (sizeof($classes)>0) foreach ($classes as $class) :
if ($class) $classes_array[] = $class;
endforeach;
return $classes_array;
}
/**
* Get the tax rates as an array
*
* @return array
*/
function get_tax_rates() {
$tax_rates = get_option('woocommerce_tax_rates');
$tax_rates_array = array();
if ($tax_rates && is_array($tax_rates) && sizeof($tax_rates)>0) foreach( $tax_rates as $rate ) :
// Standard Rate?
if (!$rate['class']) $rate['class'] = '*';
// Add entry for each country
if ($rate['countries']) foreach ($rate['countries'] as $country => $states) :
if ($states) :
foreach ($states as $state) :
$tax_rates_array[$country][$state][$rate['class']] = array( 'rate' => $rate['rate'], 'shipping' => $rate['shipping'] );
endforeach;
endif;
endforeach;
endforeach;
return $tax_rates_array;
}
/**
* Searches for a country / state tax rate
*
* @param string country
* @param string state
* @param object Tax Class
* @return int
*/
function find_rate( $country, $state = '*', $tax_class = '' ) {
$rate['rate'] = 0;
if (isset($this->rates[ $country ][ $state ])) :
if ($tax_class) :
if (isset($this->rates[ $country ][ $state ][$tax_class])) :
$rate = $this->rates[ $country ][ $state ][$tax_class];
endif;
else :
$rate = $this->rates[ $country ][ $state ][ '*' ];
endif;
elseif (isset($this->rates[ $country ][ '*' ])) :
if ($tax_class) :
if (isset($this->rates[ $country ][ '*' ][$tax_class])) :
$rate = $this->rates[ $country ][ '*' ][$tax_class];
endif;
else :
$rate = $this->rates[ $country ][ '*' ][ '*' ];
endif;
endif;
return $rate;
}
/**
* Get the current taxation rate using find_rate()
*
* @param object Tax Class
* @return int
*/
function get_rate( $tax_class = '' ) {
global $woocommerce;
/* Checkout uses customer location, otherwise use store base rate */
if ( defined('WOOCOMMERCE_CHECKOUT') && WOOCOMMERCE_CHECKOUT ) :
$country = $woocommerce->customer->get_country();
$state = $woocommerce->customer->get_state();
$rate = $this->find_rate( $country, $state, $tax_class );
return $rate['rate'];
else :
return $this->get_shop_base_rate( $tax_class );
endif;
}
/**
* Get the shop's taxation rate using find_rate()
*
* @param object Tax Class
* @return int
*/
function get_shop_base_rate( $tax_class = '' ) {
global $woocommerce;
$country = $woocommerce->countries->get_base_country();
$state = $woocommerce->countries->get_base_state();
$rate = $this->find_rate( $country, $state, $tax_class );
return $rate['rate'];
}
/**
* Get the tax rate based on the country and state
*
* @param object Tax Class
* @return mixed
*/
function get_shipping_tax_rate( $tax_class = '' ) {
global $woocommerce;
if (defined('WOOCOMMERCE_CHECKOUT') && WOOCOMMERCE_CHECKOUT) :
$country = $woocommerce->customer->get_country();
$state = $woocommerce->customer->get_state();
else :
$country = $woocommerce->countries->get_base_country();
$state = $woocommerce->countries->get_base_state();
endif;
// If we are here then shipping is taxable - work it out
if ($tax_class) :
// This will be per item shipping
$rate = $this->find_rate( $country, $state, $tax_class );
if (isset($rate['shipping']) && $rate['shipping']=='yes') :
return $rate['rate'];
else :
// Get standard rate
$rate = $this->find_rate( $country, $state );
if (isset($rate['shipping']) && $rate['shipping']=='yes') return $rate['rate'];
endif;
else :
// This will be per order shipping - loop through the order and find the highest tax class rate
$found_rates = array();
$found_shipping_rates = array();
// Loop cart and find the highest tax band
if (sizeof($woocommerce->cart->cart_contents)>0) : foreach ($woocommerce->cart->cart_contents as $item) :
if ($item['data']->tax_class) :
$found_rate = $this->find_rate( $country, $state, $item['data']->tax_class );
$found_rates[] = $found_rate['rate'];
if (isset($found_rate['shipping']) && $found_rate['shipping']=='yes') $found_shipping_rates[] = $found_rate['rate'];
endif;
endforeach; endif;
if (sizeof($found_rates) > 0 && sizeof($found_shipping_rates) > 0) :
rsort($found_rates);
rsort($found_shipping_rates);
if ($found_rates[0] == $found_shipping_rates[0]) :
return $found_shipping_rates[0];
else :
// Use standard rate
$rate = $this->find_rate( $country, $state );
if (isset($rate['shipping']) && $rate['shipping']=='yes') return $rate['rate'];
endif;
else :
// Use standard rate
$rate = $this->find_rate( $country, $state );
if (isset($rate['shipping']) && $rate['shipping']=='yes') return $rate['rate'];
endif;
endif;
return 0; // return false
}
/**
* Calculate the tax using the final value
*
* @param int Price
* @param int Taxation Rate
* @return int
*/
function calc_tax( $price, $rate, $price_includes_tax = true ) {
$price = round($price * 100, 0); // To avoid float rounding errors, work with integers (pence)
if ($price_includes_tax) :
$rate = ($rate / 100) + 1;
$tax_amount = $price - ( $price / $rate);
else :
$tax_amount = $price * ($rate/100);
endif;
$tax_amount = round($tax_amount); // Round to the nearest pence
$tax_amount = $tax_amount / 100; // Back to pounds
return number_format($tax_amount, 2, '.', '');
}
/**
* Calculate the shipping tax using the final value
*
* @param int Price
* @param int Taxation Rate
* @return int
*/
function calc_shipping_tax( $price, $rate ) {
$rate = round($rate, 4);
$tax_amount = $price * ($rate/100);
return round($tax_amount, 2);
}
}