// NextPay.IR C Sample
// docs : https://nextpay.org/nx/docs

////////////
// step 1 //
////////////



CURL *curl;
CURLcode res;
curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "POST");
  curl_easy_setopt(curl, CURLOPT_URL, "https://nextpay.org/nx/gateway/token");
  curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
  curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
  struct curl_slist *headers = NULL;
  headers = curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded");
  curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
  const char *data = "api_key=b11ee9c3-d23d-414e-8b6e-f2370baac97b&amount=74250&order_id=85NX85s427&customer_phone=09121234567&custom_json_fields=%7B%20%22productName%22%3A%22Shoes752%22%20%2C%20%22id%22%3A52%20%7D&callback_uri=https%3A%2F%2FyourWebsite.com%2Fcallback";
  curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
  res = curl_easy_perform(curl);
}
curl_easy_cleanup(curl);



////////////
// step 5 //
////////////



CURL *curl;
CURLcode res;
curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "POST");
  curl_easy_setopt(curl, CURLOPT_URL, "https://nextpay.org/nx/gateway/verify");
  curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
  curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
  struct curl_slist *headers = NULL;
  headers = curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded");
  curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
  const char *data = "api_key=b11ee9c3-d23d-414e-8b6e-f2370baac97b&amount=74250&trans_id=f7c07568-c6d1-4bee-87b1-4a9e5ed2e4c1";
  curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
  res = curl_easy_perform(curl);
}
curl_easy_cleanup(curl);