<?php

namespace App\BusProNet\DataLoader;

use App\BusProNet\Model\Hotel;
use Psr\Cache\InvalidArgumentException;
use Symfony\Contracts\Cache\ItemInterface;

class HotelDataLoader extends AbstractDataLoader
{
    public function loadAll(?string $filename = 'hotel.xml'): array
    {
        try {
            return $this->cache->get('bpn_hotels', function (ItemInterface $item) use ($filename) {
                $item->expiresAfter(3600);

                $xml = $this->loadXml($filename);

                $hotels = [];

                foreach ($xml->hotel as $hotel) {
                    $id = (int)$hotel->attributes()['idbuspro'];
                    $hotels[$id] = $this->parseXml($hotel);
                }

                return $hotels;
            });
        } catch (InvalidArgumentException $e) {
            return [];
        }
    }

    public function loadById(int $id, ?string $filename = 'hotel.xml'): ?Hotel
    {
        $hotels = $this->loadAll($filename);

        return $hotels[$id] ?? null;
    }

    public function loadByCode(string $code, ?string $filename = 'hotel.xml'): ?Hotel
    {
        $hotels = $this->loadAll($filename);

        foreach ($hotels as $hotel) {
            if ($code === $hotel->code) {
                return $hotel;
            }
        }

        return null;
    }

    private function loadXml(?string $filename = 'hotel.xml'): \SimpleXMLElement
    {
        $filepath = $this->xmlPath.'/'.$filename;

        return simplexml_load_file($filepath);
    }

    public function parseXml(\SimpleXMLElement $xml): Hotel
    {
        $attributes = $xml->attributes();

        $hotel = new Hotel();
        $hotel->id = (int) $attributes['idbuspro'];
        $hotel->code = (string) $attributes['code'];
        $hotel->name = (string) $xml->name;
        $hotel->city = $xml->ort ? (string) $xml->ort : null;
        $hotel->country = (string) $xml->land;
        $hotel->street = (string) $xml->strasse;
        $hotel->phone = $xml->telefon ? (string) $xml->telefon : null;

        return $hotel;
    }
}