<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

require_once 'lib/shipping/shippinglib.php';

class ShippingProvider_Ups implements ShippingProvider
{
    private $username;
    private $password;
    private $license;

    public function __construct(array $config)
    {
        $this->username = $config['username'];
        $this->password = $config['password'];
        $this->license = $config['license'];
    }

    public function getRates(array $from, array $to, array $packages)
    {
        if ($dom = $this->obtain($from, $to, $packages)) {
            $rates = [];

            foreach ($dom->getElementsByTagName('RatedShipment') as $node) {
                $rates[] = $this->readShipment($node);
            }

            return $rates;
        } else {
            return [];
        }
    }

    private function obtain($from, $to, $packages, $service)
    {
        try {
            $auth = $this->getAuth();
            $request = $this->getRequest($from, $to, $packages, $service);

            $client = TikiLib::lib('tiki')->get_http_client();
            $client->setUri('https://www.ups.com/ups.app/xml/Rate');
            $client->setRawBody($auth . $request);

            $client->setMethod(Laminas\Http\Request::METHOD_POST);
            $response = $client->send();
            $body = $response->getBody();

            $dom = new DOMDocument();
            $dom->loadXML($body);

            return $dom;
        } catch (Laminas\Http\Exception\ExceptionInterface $e) {
            return null;
        }
    }

    private function readShipment($node)
    {
        $xp = new DOMXPath($node->ownerDocument);
        return [
            'provider' => 'UPS',
            'service' => 'UPS_CODE_' . $xp->query('Service/Code', $node)->item(0)->textContent,
            'readable' => tr('UPS_CODE_%0', $xp->query('Service/Code', $node)->item(0)->textContent),
            'cost' => $xp->query('TotalCharges/MonetaryValue', $node)->item(0)->textContent,
            'currency' => $xp->query('TotalCharges/CurrencyCode', $node)->item(0)->textContent,
        ];
    }

    private function getAuth()
    {
        $dom = new DOMDocument('1.0');
        $dom->appendChild($root = $dom->createElement('AccessRequest'));

        $root->appendChild($license = $dom->createElement('AccessLicenseNumber'));
        $root->appendChild($username = $dom->createElement('UserId'));
        $root->appendChild($password = $dom->createElement('Password'));

        $license->appendChild($dom->createTextNode($this->license));
        $username->appendChild($dom->createTextNode($this->username));
        $password->appendChild($dom->createTextNode($this->password));

        return $dom->saveXML();
    }

    private function getRequest($from, $to, $packages)
    {
        $dom = new DOMDocument('1.0');
        $dom->appendChild($root = $dom->createElement('RatingServiceSelectionRequest'));
        $root->appendChild($request = $dom->createElement('Request'));

        $request->appendChild($ref = $dom->createElement('TransactionReference'));
        $ref->appendChild($dom->createElement('CustomerContext', 'Tiki'));
        $ref->appendChild($dom->createElement('XpciVersion', '1.0001'));
        $request->appendChild($dom->createElement('RequestAction', 'Shop'));
        $request->appendChild($dom->createElement('RequestOption', 'Shop'));
        $root->appendChild($pickup = $dom->createElement('PickupType'));
        $root->appendChild($shipment = $dom->createElement('Shipment'));

        $pickup->appendChild($dom->createElement('Code', '01'));

        $this->addAddress($shipment, 'Shipper', $from);
        $this->addAddress($shipment, 'ShipTo', $to);
        //$this->addAddress( $shipment, 'ShipFrom', $from );

        foreach ($packages as $package) {
            $this->addPackage($shipment, $package);
        }

        return $dom->saveXML();
    }

    private function addAddress($root, $name, $data)
    {
        $dom = $root->ownerDocument;

        $root->appendChild($node = $dom->createElement($name));
        $node->appendChild($address = $dom->createElement('Address'));
        $address->appendChild($zip = $dom->createElement('PostalCode'));
        $address->appendChild($country = $dom->createElement('CountryCode'));

        $zip->appendChild($dom->createTextNode($data['zip']));
        $country->appendChild($dom->createTextNode($data['country']));
    }

    private function addPackage($root, $data)
    {
        $dom = $root->ownerDocument;

        $root->appendChild($package = $dom->createElement('Package'));
        $package->appendChild($type = $dom->createElement('PackagingType'));
        $type->appendChild($dom->createElement('Code', '00'));
        $package->appendChild($packageWeight = $dom->createElement('PackageWeight'));
        $packageWeight->appendChild($unit = $dom->createElement('UnitOfMeasurement'));
        $unit->appendChild($code = $dom->createElement('Code', 'LBS'));
        $packageWeight->appendChild($weight = $dom->createElement('Weight'));

        $weight->appendChild($dom->createTextNode($data['weight'] * 2.20462262));
    }
}