<?php
/*************************************************************************************/
/*                                                                                   */
/*      Thelia	                                                                     */
/*                                                                                   */
/*      Copyright (c) OpenStudio                                                     */
/*      email : info@thelia.net                                                      */
/*      web : http://www.thelia.net                                                  */
/*                                                                                   */
/*      This program is free software; you can redistribute it and/or modify         */
/*      it under the terms of the GNU General Public License as published by         */
/*      the Free Software Foundation; either version 3 of the License                */
/*                                                                                   */
/*      This program is distributed in the hope that it will be useful,              */
/*      but WITHOUT ANY WARRANTY; without even the implied warranty of               */
/*      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                */
/*      GNU General Public License for more details.                                 */
/*                                                                                   */
/*      You should have received a copy of the GNU General Public License            */
/*	    along with this program. If not, see <http://www.gnu.org/licenses/>.         */
/*                                                                                   */
/*************************************************************************************/

namespace Colissimo;

use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\Request;
use Thelia\Exception\OrderException;
use Thelia\Model\Country;
use Thelia\Module\BaseModule;
use Thelia\Module\DeliveryModuleInterface;

class Colissimo extends BaseModule implements DeliveryModuleInterface
{
    protected $request;
    protected $dispatcher;

    private static $prices = null;

    const JSON_PRICE_RESOURCE = "prices.json";

    public static function getPrices()
    {
        if(null === self::$prices) {
            self::$prices = json_decode(file_get_contents(sprintf('%s/Config/%s', __DIR__, self::JSON_PRICE_RESOURCE)), true);
        }

        return self::$prices;
    }

    /**
     * @param $areaId
     * @param $weight
     *
     * @return mixed
     * @throws \Thelia\Exception\OrderException
     */
    public static function getPostageAmount($areaId, $weight)
    {
        $prices = self::getPrices();

        /* check if Colissimo delivers the asked area */
        if(!isset($prices[$areaId]) || !isset($prices[$areaId]["slices"])) {
            throw new OrderException("Colissimo delivery unavailable for the chosen delivery country", OrderException::DELIVERY_MODULE_UNAVAILABLE);
        }

        $areaPrices = $prices[$areaId]["slices"];
        ksort($areaPrices);

        /* check this weight is not too much */
        end($areaPrices);
        $maxWeight = key($areaPrices);
        if($weight > $maxWeight) {
            throw new OrderException(sprintf("Colissimo delivery unavailable for this cart weight (%s kg)", $weight), OrderException::DELIVERY_MODULE_UNAVAILABLE);
        }

        $postage = current($areaPrices);

        while(prev($areaPrices)) {
            if($weight > key($areaPrices)) {
                break;
            }

            $postage = current($areaPrices);
        }

        return $postage;
    }

    public function setRequest(Request $request)
    {
        $this->request = $request;
    }

    public function getRequest()
    {
        return $this->request;
    }

    public function setDispatcher(EventDispatcherInterface $dispatcher)
    {
        $this->dispatcher = $dispatcher;
    }

    public function getDispatcher()
    {
        return $this->dispatcher;
    }

    /**
     *
     * calculate and return delivery price
     *
     * @param Country $country
     * @return mixed
     * @throws \Thelia\Exception\OrderException
     */
    public function getPostage(Country $country)
    {
        $cartWeight = $this->getContainer()->get('request')->getSession()->getCart()->getWeight();

        $postage = self::getPostageAmount(
            $country->getAreaId(),
            $cartWeight
        );

        return $postage;
    }

    public function getCode()
    {
        return 'Colissimo';
    }

}