class.ilMathJaxServer.php

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<?php

declare(strict_types=1);

class ilMathJaxServer
{
    protected ilMathJaxConfig $config;

    public function __construct(ilMathJaxConfig $config)
    {
        $this->config = $config;
    }

    public function call(array $options): string
    {
        $curl = curl_init($this->config->getServerAddress());
        curl_setopt($curl, CURLOPT_HEADER, false);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_HTTPHEADER, array("Content-type: application/json"));
        curl_setopt($curl, CURLOPT_POST, true);
        curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($options, JSON_THROW_ON_ERROR));
        curl_setopt($curl, CURLOPT_TIMEOUT, $this->config->getServerTimeout());

        $response = (string) curl_exec($curl);
        $status = curl_getinfo($curl, CURLINFO_RESPONSE_CODE);
        curl_close($curl);

        if ($status !== 200) {
            $lines = explode("\n", $response);
            if (isset($lines[1])) {
                throw new ilMathJaxException($lines[1]);
            }
            throw new ilMathJaxException('curl server call failed');
        }
        return $response;
    }
}