<?php
/*
* 2007-2014 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2014 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

function generate_tax_rules()
{
	$res = true;
	$taxes = Db::getInstance()->executeS('SELECT * from `'._DB_PREFIX_.'tax` WHERE active = 1');

	// if no tax found, nothing to do, return true
	if (!is_array($taxes))
		return true;

	foreach ($taxes AS $tax)
	{
		$id_tax = $tax['id_tax'];
		$row = array(
			'active' => 1,
			'id_tax_rules_group' => $id_tax,
			'name' => 'Rule '.$tax['rate'].'%',
		);
		$res &= Db::getInstance()->insert('tax_rules_group', $row);
		$id_tax_rules_group = Db::getInstance()->insert_id();


		$countries = Db::getInstance()->executeS('
		SELECT * FROM `'._DB_PREFIX_.'country` c
		LEFT JOIN `'._DB_PREFIX_.'zone` z ON (c.`id_zone` = z.`id_zone`)
		LEFT JOIN `'._DB_PREFIX_.'tax_zone` tz ON (tz.`id_zone` = z.`id_zone`)
		WHERE `id_tax` = '.(int)$id_tax
		);
		if ($countries)
		{
			foreach ($countries AS $country)
			{
				$res &= Db::getInstance()->execute('INSERT INTO `'._DB_PREFIX_.'tax_rule` 
					(`id_tax_rules_group`, `id_country`, `id_state`, `state_behavior`, `id_tax`)
					VALUES 
					('.$id_tax_rules_group.', '.(int)$country['id_country'].', 0, 0, '.(int)$id_tax. ')');
			}
		}

		$states = Db::getInstance()->executeS('
		SELECT * FROM `'._DB_PREFIX_.'states` s
		LEFT JOIN `'._DB_PREFIX_.'tax_state` ts ON (ts.`id_state` = s.`id_state`)
		WHERE `id_tax` = '.(int)$id_tax);

		if ($states)
		{
			foreach ($states AS $state)
			{
				if (!in_array($state['tax_behavior'], array(PS_PRODUCT_TAX, PS_STATE_TAX, PS_BOTH_TAX)))
					$tax_behavior = PS_PRODUCT_TAX;
				else
					$tax_behavior = $state['tax_behavior'];
				$res &= Db::getInstance()->execute('
					INSERT INTO `'._DB_PREFIX_.'tax_rule`
					(`id_tax_rules_group`, `id_country`, `id_state`, `state_behavior`, `id_tax`)
					VALUES (
					'.$id_tax_rules_group.',
				 	'.(int)$state['id_country'].',
	 					'.(int)$state['id_state'].',
				 '.(int)$tax_behavior.',
				 '.(int)$id_tax.
				 ')');
			}
		}

		$res &= Db::getInstance()->execute('
		UPDATE `'._DB_PREFIX_.'product`
		SET `id_tax_rules_group` = '.$id_tax_rules_group.'
		WHERE `id_tax` = '.(int)$id_tax
		);

		$res &= Db::getInstance()->execute('
		UPDATE `'._DB_PREFIX_.'carrier`
		SET `id_tax_rules_group` = '.$id_tax_rules_group.'
		WHERE `id_tax` = '.(int)$id_tax
		);

		$socolissimo_overcost_tax = Db::getInstance()->getValue('SELECT value 
			FROM `'._DB_PREFIX_.'configuration`
			WHERE name="SOCOLISSIMO_OVERCOST_TAX"');
		if ($socolissimo_overcost_tax == $id_tax)
			$res &= Db::getInstance()->getValue('UPDATE `'._DB_PREFIX_.'configuration`
			set value="'.$id_tax_rules_group.'" WHERE name="SOCOLISSIMO_OVERCOST_TAX"');
	}
	return $res;
}