Insert Weather into Hikvision IP CAM via Text Overlay

hikOverlay.php

<?php

// https://api.openweathermap.org/data/2.5/weather?id=709114&appid=&units=metric&mode=json
// This code you can add to CRON

Class hikOverlay {
    function __construct(object $config = null) {
        if (isset($config)) {
            foreach($config as $key => $value) {
                $this->$key = (object) $value;
            }
        }
        $this->displayText = 'None';
    }

    public function setOverlayText(object $params = null) {
        $data = $this->_getWeather();
        if ($data) {
            // Set params to CAM with new $this->displayText
            $camName = $this->_curlReq((object) [
                'type' => 'overlay',
                'id' => 1,
                'url' => $params->url,
                'ssl' => false,
                'header' => false,
                'auth' => $params->auth,
            ]);
            $parseXml = new SimpleXMLElement($camName);
            $this->_curlReq($params);
            return '['.(string) $parseXml->name[0].'] '.$this->displayText;
        }
    }

    private function _curlReq(object $params) {
        if (is_null($params)) return false;
        if ($params->type === 'cam') {
            $query = 'ISAPI/System/Video/inputs/channels/'.$params->id.'/overlays/text';
        }
        else if ($params->type === 'overlay') {
            $query = 'ISAPI/System/Video/inputs/channels/'.$params->id;
        }
        else {
            $query = (isset($params->query)) ? http_build_query($params->query) : '';
        }
        $ch = curl_init($params->url.$query);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $params->ssl);
        curl_setopt($ch, CURLOPT_HEADER, $params->header);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);

        if (isset($params->auth)) {
            curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
            curl_setopt($ch, CURLOPT_USERPWD, $params->auth['username'] . ":" . $params->auth['password']);
        }

        if (isset($params->method)) {
            $xml = $this->_makeXMLBody($params->id, $this->displayText);
            curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/xml']);
            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
            curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
        }

        return curl_exec($ch);
        curl_close($ch);
    }

    private function _getWeather() {
        $data = $this->_curlReq($this->weather);
        if ($data) {
            $res = json_decode($data);
            if ($res->cod === 200) {

                $temp = round($res->main->temp, 1);
                $temp = ($temp > 0) ? '+'.$temp : $temp;
                $feels_like = round($res->main->feels_like, 1);
                $feels_like = ($feels_like > 0) ? '+'.$feels_like : $feels_like;

                $this->displayText = $temp.' ('.$feels_like.')C / H-'.$res->main->humidity.'% / W-'.$res->wind->speed.'m';
                return true;
            }
            else {
                return false;
            }
        }

        return $data;
    }

    private function _makeXMLBody(int $id, string $displayText = '') {
        $xml = new SimpleXMLElement("<TextOverlayList></TextOverlayList>");
        $TextOverlay = $xml->addChild('TextOverlay');
        $id = $TextOverlay->addChild('id', $id);
        $enabled = $TextOverlay->addChild('enabled', 'true');
        $displayText = $TextOverlay->addChild('displayText', $displayText);
        return $xml->asXML();
    }

}

// Init Class

$hikOverlay = new hikOverlay((object) [
    'weather' => [
        'type' => 'weather',
        'url' => 'api.openweathermap.org/data/2.5/weather?',
        'query' => [
            'id' => '',
            'appid' => '',
            'units' => 'metric',
            'mode' => 'json',
        ],
        'ssl' => false,
        'header' => false,
    ],
]);

// Cams records
$cams = [
    [
        'id' => 1,
        'url' => 'http://192.168.1.2/',
    ],
    [
        'id' => 1,
        'url' => 'http://192.168.1.3/',
    ],
];

$count = count($cams);

// set text overlays
for($i = 0; $i < $count; $i++) {
    echo 'CAM-',$i;
    $params = (object) [
        'type' => 'cam',
        'id' => $cams[$i]['id'],
        'url' => $cams[$i]['url'],
        'method' => 'put',
        'ssl' => false,
        'header' => false,
        'auth' => [
            'username' => 'admin',
            'password' => '12345',
        ],
    ];
    echo ': ', $hikOverlay->setOverlayText($params),PHP_EOL;
}