Sms hosted api klasa

<?php

class SmsHostedApiAdapter extends ExternalApi {

    /**
     * send sms
     * 
     * @param string $phoneNumber
     * @param string $senderName - in this provider senderName is permanent
     * @param string $content - message content
     * 
     * @return string
     */
    public function sendSms(string $phoneNumber, string $senderName, string $content) {
        $transactionId = RandomCodeGenerator::generate(64, true);

        $parameters = [
            'Phone' => [$phoneNumber],
            'Message' => $content,
            'Sender' => $this->key,
            'TransactionId' => $transactionId,
            'Priority' => 1,
            'FlashSms' => false,
        ];

        return $this->sms_send($parameters);
    }

    /**
     * real method for send sms via api
     * 
     * @param array $params
     * @param string $token
     * 
     * @return string
     */
    private function sms_send(array $parameters) {
        return $this->call('Smses', $parameters, true);
    }

    /**
     * get delivery reports
     * 
     * @param array $parameters
     * 
     * @return type
     */
    public function getDeliveryReports(array $parameters) {
        return $this->call('DeliveryReports', $parameters, false);
    }

    /**
     * get inputs sms
     * 
     * @param array $parameters
     * 
     * @return type
     */
    public function getInputSms(array $parameters) {
        return $this->call('InputSmses', $parameters, false);
    }

    /**
     * call method 
     * 
     * @param type $method
     * @param type $parameters
     * @param bool $post - flag post or get method
     * @return array
     * 
     * @throws \Exception
     */
    public function call($method, $parameters = [], bool $post = true): array {
        $response = [];
        $url = $this->host . $method;

        if (!$post) {
            $parameters = http_build_query($parameters);
            $url .= '?' . $parameters;
        }

        $parameters = json_encode($parameters);

        $headers = [
            'Content-Type: application/json; charset=utf-8',
            'Accept: application/json',
            'Authorization: Basic ' . base64_encode("$this->login:$this->pass")
        ];

        try {
            $ch = curl_init($url);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

            if ($post) {
                curl_setopt($ch, CURLOPT_POST, true);
                curl_setopt($ch, CURLOPT_POSTFIELDS, $parameters);
            }

            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

            $responseJson = curl_exec($ch);
            $response = json_decode($responseJson, true);

            $this->lastHttpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

            curl_close($ch);
        } catch (\Exception $ex) {
            throw new \Exception('Curl call failed! HttpCode: ' . $this->lastHttpCode . ' (Ex: ' . $ex->getMessage() . ')');
        }

        return $response;
    }

}