<?php

namespace FedEx;

use FedEx\Model\Config\FedExConfigValue;
use Propel\Runtime\Connection\ConnectionInterface;
use Thelia\Core\Translation\Translator;
use Thelia\Install\Database;
use Thelia\Model\Country;
use Thelia\Model\State;
use Thelia\Module\AbstractDeliveryModule;
use Thelia\Module\Exception\DeliveryException;

class FedEx extends AbstractDeliveryModule
{
    const DOMAIN_NAME = 'fedex';

    protected $request;
    protected $dispatcher;

    const TRACKING_URL_PARAMETER = 'tracking_url';
    const DEFAULT_TRACKING_URL = "https://www.fedex.com/apps/fedextrack/?action=track&trackingnumber=";
    private static $prices = null;
    const JSON_PRICE_RESOURCE = "/Config/prices.json";

    public static function getPrices()
    {
        if (null === self::$prices) {
            self::$prices = json_decode(FedEx::getConfigValue(FedExConfigValue::PRICES, null), true);
        }

        return self::$prices;
    }

    public function postActivation(ConnectionInterface $con = null)
    {
        self::setConfigValue(FedEx::TRACKING_URL_PARAMETER, FedEx::DEFAULT_TRACKING_URL);

        $database = new Database($con);
        $database->insertSql(null, array(__DIR__ . '/Config/thelia.sql'));
    }


    public function isValidDelivery(Country $country, State $state = null)
    {
        if (null !== $area = $this->getAreaForCountry($country, $state)) {
            $areaId = $area->getId();

            $prices = self::getPrices();

            /* Check if FedEx delivers the area */
            if (isset($prices[$areaId]) && isset($prices[$areaId]["slices"])) {
                // Yes ! Check if the cart weight is below slice limit
                $areaPrices = $prices[$areaId]["slices"];
                ksort($areaPrices);

                /* Check cart weight is below the maximum weight */
                end($areaPrices);
                $maxWeight = key($areaPrices);

                $cartWeight = $this->getRequest()->getSession()->getSessionCart($this->getDispatcher())->getWeight();

                if ($cartWeight <= $maxWeight) {
                    return true;
                }
            }
        }

        return false;
    }

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

        /* check if FedEx delivers the asked area */
        if (!isset($prices[$areaId]) || !isset($prices[$areaId]["slices"])) {
            throw new DeliveryException(
                Translator::getInstance()->trans(
                    "FedEx delivery unavailable for the delivery country",
                    [],
                    self::DOMAIN_NAME
                )
            );
        }

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

        /* Check cart weight is below the maximum weight */
        end($areaPrices);
        $maxWeight = key($areaPrices);
        if ($weight > $maxWeight) {
            throw new DeliveryException(
                Translator::getInstance()->trans(
                    "FedEx delivery unavailable for this cart weight (%weight kg)",
                    array("%weight" => $weight),
                    self::DOMAIN_NAME
                )
            );
        }

        $postage = current($areaPrices);

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

            $postage = current($areaPrices);
        }

        return $postage;
    }

    /**
     *
     * calculate and return delivery price
     *
     * @param Country $country
     * @param State $state
     * @return mixed
     */
    public function getPostage(Country $country, State $state = null)
    {
        $cartWeight = $this->getRequest()->getSession()->getSessionCart($this->getDispatcher())->getWeight();

        $postage = self::getPostageAmount(
            $this->getAreaForCountry($country, $state)->getId(),
            $cartWeight
        );

        return $postage;
    }

}