<?php

namespace App\Service;

use Symfony\Component\CssSelector\CssSelectorConverter;
use Zend\Config\Config;
use Zend\Http\Client;

class TrInfoCollectorService
{
    /**
     * @var Config
     */
    private $config;

    /**
     * @var Client
     */
    private $httpClient;

    /**
     * @var array
     */
    private $tempSensors = [
        'Temp 5' => 'back_left',
        'Temp 4' => 'back_middle',
        'Temp 3' => 'back_right',
    ];

    /**
     * JiraClientService constructor.
     * @param Client $client
     * @param Config $config
     */
    public function __construct(Client $client, Config $config)
    {
        $this->httpClient = $client;
        $this->config = $config;
    }

    public function getLabTemperatureData()
    {
        /** @var Config $labTemperatureUrl */
        $labTemperatureUrl = $this->config->get('url.labTemperatureUrl');

        $response = $this->httpClient
            ->setUri($labTemperatureUrl)
            ->send();

        if(!$response->isSuccess()) {
            throw new \UnexpectedValueException("Bad LAB result", $response->getStatusCode());
        }

        return $this->parseHtml($response->getBody());
    }

    private function parseHtml($html): array
    {
        $cssToXpathConverter = new CssSelectorConverter();
        $xpathLabelQuery = $cssToXpathConverter->toXPath('a.sensormenu.isnotpaused');
        $xpathValueQuery = $cssToXpathConverter->toXPath('div.graphlabel2');

        $xmlErrorHandling = libxml_use_internal_errors(TRUE);
        $domDocument = new \DOMDocument();
        $domDocument->loadHTML($html);
        libxml_clear_errors();
        libxml_use_internal_errors($xmlErrorHandling);

        $documentXpath = new \DOMXPath($domDocument);
        /** @var \DOMNodeList $element */
        $element = $documentXpath->query($xpathLabelQuery);

        $thing = [];
        /** @var \DOMElement $item */
        foreach($element as $item) {
            $sensorName = trim($item->nodeValue);
            if( in_array($sensorName, array_keys($this->tempSensors)) ){
                /** @var \DOMNodeList $element */
                $valueElement = $documentXpath->query($xpathValueQuery, $item->parentNode->parentNode);
                $thing[$this->tempSensors[$sensorName]] = $valueElement->item(0)->nodeValue;
            }
        }

        return $thing;
    }
}