155 lines
3.6 KiB
PHP
Executable File
155 lines
3.6 KiB
PHP
Executable File
<?php
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/*
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* 2007-2014 PrestaShop
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*
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* NOTICE OF LICENSE
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*
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* This source file is subject to the Open Software License (OSL 3.0)
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* that is bundled with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://opensource.org/licenses/osl-3.0.php
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@prestashop.com so we can send you a copy immediately.
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*
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* DISCLAIMER
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*
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* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
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* versions in the future. If you wish to customize PrestaShop for your
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* needs please refer to http://www.prestashop.com for more information.
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*
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* @author PrestaShop SA <contact@prestashop.com>
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* @copyright 2007-2014 PrestaShop SA
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
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* International Registered Trademark & Property of PrestaShop SA
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*/
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/**
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* @since 1.5.0
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*
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* TaxCaculator is responsible of the tax computation
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*/
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class TaxCalculatorCore
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{
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/**
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* COMBINE_METHOD sum taxes
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* eg: 100€ * (10% + 15%)
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*/
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const COMBINE_METHOD = 1;
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/**
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* ONE_AFTER_ANOTHER_METHOD apply taxes one after another
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* eg: (100€ * 10%) * 15%
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*/
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const ONE_AFTER_ANOTHER_METHOD = 2;
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/**
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* @var array $taxes
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*/
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public $taxes;
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/**
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* @var int $computation_method (COMBINE_METHOD | ONE_AFTER_ANOTHER_METHOD)
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*/
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public $computation_method;
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/**
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* @param array $taxes
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* @param int $computation_method (COMBINE_METHOD | ONE_AFTER_ANOTHER_METHOD)
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*/
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public function __construct(array $taxes = array(), $computation_method = TaxCalculator::COMBINE_METHOD)
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{
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// sanity check
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foreach ($taxes as $tax)
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if (!($tax instanceof Tax))
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throw new Exception('Invalid Tax Object');
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$this->taxes = $taxes;
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$this->computation_method = (int)$computation_method;
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}
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/**
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* Compute and add the taxes to the specified price
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*
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* @param float $price_te price tax excluded
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* @return float price with taxes
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*/
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public function addTaxes($price_te)
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{
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return $price_te * (1 + ($this->getTotalRate() / 100));
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}
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/**
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* Compute and remove the taxes to the specified price
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*
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* @param float $price_ti price tax inclusive
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* @return float price without taxes
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*/
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public function removeTaxes($price_ti)
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{
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return $price_ti / (1 + $this->getTotalRate() / 100);
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}
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/**
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* @return float total taxes rate
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*/
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public function getTotalRate()
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{
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$taxes = 0;
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if ($this->computation_method == TaxCalculator::ONE_AFTER_ANOTHER_METHOD)
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{
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$taxes = 1;
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foreach ($this->taxes as $tax)
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$taxes *= (1 + (abs($tax->rate) / 100));
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$taxes = $taxes - 1;
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$taxes = $taxes * 100;
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}
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else
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{
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foreach ($this->taxes as $tax)
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$taxes += abs($tax->rate);
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}
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return (float)$taxes;
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}
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public function getTaxesName()
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{
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$name = '';
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foreach ($this->taxes as $tax)
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$name .= $tax->name[(int)Context::getContext()->language->id].' - ';
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$name = rtrim($name, ' - ');
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return $name;
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}
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/**
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* Return the tax amount associated to each taxes of the TaxCalculator
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*
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* @param float $price_te
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* @return array $taxes_amount
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*/
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public function getTaxesAmount($price_te)
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{
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$taxes_amounts = array();
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foreach ($this->taxes as $tax)
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{
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if ($this->computation_method == TaxCalculator::ONE_AFTER_ANOTHER_METHOD)
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{
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$taxes_amounts[$tax->id] = $price_te * (abs($tax->rate) / 100);
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$price_te = $price_te + $taxes_amounts[$tax->id];
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}
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else
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$taxes_amounts[$tax->id] = ($price_te * (abs($tax->rate) / 100));
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}
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return $taxes_amounts;
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}
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}
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