<?php
/*
* 2007-2016 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  2007-2016 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/


class TaxCore extends ObjectModel
{
    /** @var string Name */
    public $name;

    /** @var float Rate (%) */
    public $rate;

    /** @var bool active state */
    public $active;

    /** @var bool true if the tax has been historized */
    public $deleted = 0;

    /**
     * @see ObjectModel::$definition
     */
    public static $definition = array(
        'table' => 'tax',
        'primary' => 'id_tax',
        'multilang' => true,
        'fields' => array(
            'rate' =>            array('type' => self::TYPE_FLOAT, 'validate' => 'isFloat', 'required' => true),
            'active' =>        array('type' => self::TYPE_BOOL),
            'deleted' =>        array('type' => self::TYPE_BOOL),
            /* Lang fields */
            'name' =>            array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'required' => true, 'size' => 32),
        ),
    );


    protected static $_product_country_tax = array();
    protected static $_product_tax_via_rules = array();

    protected $webserviceParameters = array(
        'objectsNodeName' => 'taxes',
    );

    public function delete()
    {
        /* Clean associations */
        TaxRule::deleteTaxRuleByIdTax((int)$this->id);

        if ($this->isUsed()) {
            return $this->historize();
        } else {
            return parent::delete();
        }
    }

    /**
     * Save the object with the field deleted to true
     *
     *  @return bool
     */
    public function historize()
    {
        $this->deleted = true;
        return parent::update();
    }

    public function toggleStatus()
    {
        if (parent::toggleStatus()) {
            return $this->_onStatusChange();
        }

        return false;
    }

    public function update($null_values = false)
    {
        if (!$this->deleted && $this->isUsed()) {
            $historized_tax = new Tax($this->id);
            $historized_tax->historize();

            // remove the id in order to create a new object
            $this->id = 0;
            $res = $this->add();

            // change tax id in the tax rule table
            $res &= TaxRule::swapTaxId($historized_tax->id, $this->id);
            return $res;
        } elseif (parent::update($null_values)) {
            return $this->_onStatusChange();
        }

        return false;
    }

    protected function _onStatusChange()
    {
        if (!$this->active) {
            return TaxRule::deleteTaxRuleByIdTax($this->id);
        }

        return true;
    }

    /**
     * Returns true if the tax is used in an order details
     *
     * @return bool
     */
    public function isUsed()
    {
        return Db::getInstance()->getValue('
		SELECT `id_tax`
		FROM `'._DB_PREFIX_.'order_detail_tax`
		WHERE `id_tax` = '.(int)$this->id
        );
    }

    /**
    * Get all available taxes
    *
    * @return array Taxes
    */
    public static function getTaxes($id_lang = false, $active_only = true)
    {
        $sql = new DbQuery();
        $sql->select('t.id_tax, t.rate');
        $sql->from('tax', 't');
        $sql->where('t.`deleted` != 1');

        if ($id_lang) {
            $sql->select('tl.name, tl.id_lang');
            $sql->leftJoin('tax_lang', 'tl', 't.`id_tax` = tl.`id_tax` AND tl.`id_lang` = '.(int)$id_lang);
            $sql->orderBy('`name` ASC');
        }

        if ($active_only) {
            $sql->where('t.`active` = 1');
        }

        return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql);
    }

    public static function excludeTaxeOption()
    {
        return !Configuration::get('PS_TAX');
    }

    /**
    * Return the tax id associated to the specified name
    *
    * @param string $tax_name
    * @param bool $active (true by default)
    */
    public static function getTaxIdByName($tax_name, $active = 1)
    {
        $tax = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
			SELECT t.`id_tax`
			FROM `'._DB_PREFIX_.'tax` t
			LEFT JOIN `'._DB_PREFIX_.'tax_lang` tl ON (tl.id_tax = t.id_tax)
			WHERE tl.`name` = \''.pSQL($tax_name).'\' '.
            ($active == 1 ? ' AND t.`active` = 1' : ''));

        return $tax ? (int)$tax['id_tax'] : false;
    }

    /**
    * Returns the ecotax tax rate
    *
    * @param id_address
    * @return float $tax_rate
    */
    public static function getProductEcotaxRate($id_address = null)
    {
        $address = Address::initialize($id_address);

        $tax_manager = TaxManagerFactory::getManager($address, (int)Configuration::get('PS_ECOTAX_TAX_RULES_GROUP_ID'));
        $tax_calculator = $tax_manager->getTaxCalculator();

        return $tax_calculator->getTotalRate();
    }

    /**
    * Returns the carrier tax rate
    *
    * @param id_address
    * @return float $tax_rate
    */
    public static function getCarrierTaxRate($id_carrier, $id_address = null)
    {
        $address = Address::initialize($id_address);
        $id_tax_rules = (int)Carrier::getIdTaxRulesGroupByIdCarrier((int)$id_carrier);

        $tax_manager = TaxManagerFactory::getManager($address, $id_tax_rules);
        $tax_calculator = $tax_manager->getTaxCalculator();

        return $tax_calculator->getTotalRate();
    }

    /**
     * Return the product tax rate using the tax rules system
     *
     * @param int $id_product
     * @param int $id_country
     * @return Tax
     *
     * @deprecated since 1.5
     */
    public static function getProductTaxRateViaRules($id_product, $id_country, $id_state, $zipcode)
    {
        Tools::displayAsDeprecated();

        if (!isset(self::$_product_tax_via_rules[$id_product.'-'.$id_country.'-'.$id_state.'-'.$zipcode])) {
            $tax_rate = TaxRulesGroup::getTaxesRate((int)Product::getIdTaxRulesGroupByIdProduct((int)$id_product), (int)$id_country, (int)$id_state, $zipcode);
            self::$_product_tax_via_rules[$id_product.'-'.$id_country.'-'.$zipcode] = $tax_rate;
        }

        return self::$_product_tax_via_rules[$id_product.'-'.$id_country.'-'.$zipcode];
    }

    /**
     * Returns the product tax
     *
     * @param int $id_product
     * @param int $id_country
     * @return Tax
     */
    public static function getProductTaxRate($id_product, $id_address = null, Context $context = null)
    {
        if ($context == null) {
            $context = Context::getContext();
        }

        $address = Address::initialize($id_address);
        $id_tax_rules = (int)Product::getIdTaxRulesGroupByIdProduct($id_product, $context);

        $tax_manager = TaxManagerFactory::getManager($address, $id_tax_rules);
        $tax_calculator = $tax_manager->getTaxCalculator();

        return $tax_calculator->getTotalRate();
    }
}
