(Unicode C) Paynow.pl -- Make a Payment Request

Make a payment request POST with prepared message on Paynow payment request endpoint.

For more information, see https://docs.paynow.pl/#section/Payments/Make-a-payment

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkHttpW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkCrypt2W.h>
#include <C_CkHttpResponseW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkJsonObjectW json;
    const wchar_t *myApiAccessKey;
    const wchar_t *mySigCalcKey;
    HCkCrypt2W crypt;
    const wchar_t *messageBody;
    const wchar_t *signature;
    HCkHttpResponseW resp;
    HCkJsonObjectW jsonResp;
    const wchar_t *redirectUrl;
    const wchar_t *paymentId;
    const wchar_t *status;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http = CkHttpW_Create();

    // Implements the following CURL command:

    // curl --request POST 'https://api.sandbox.paynow.pl/v1/payments' \
    // -H 'Content-Type: application/json' \
    // -H 'Api-Key: c12c386b-650b-43db-9430-d84fc05d9433' \
    // -H 'Signature: aYPCytCoc+/wFgqHZJjgBCi20omXTn0yzm9LysJgnFo=' \
    // -H 'Idempotency-Key: 59c6dd26-f905-487b-96c9-fd1d2bd76885' \
    // --data-raw '{
    //     "amount": 45671,
    //     "externalId": "234567898654",
    //     "description": "Test transaction",
    //     "buyer": {
    //         "email": "jan.kowalski@melements.pl"
    //     }
    // }'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    // The following JSON is sent in the request body.

    // {
    //   "amount": 45671,
    //   "externalId": "234567898654",
    //   "description": "Test transaction",
    //   "buyer": {
    //     "email": "jan.kowalski@melements.pl"
    //   }
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateInt(json,L"amount",45671);
    CkJsonObjectW_UpdateString(json,L"externalId",L"234567898654");
    CkJsonObjectW_UpdateString(json,L"description",L"Test transaction");
    CkJsonObjectW_UpdateString(json,L"buyer.email",L"jan.kowalski@melements.pl");

    myApiAccessKey = L"c12c386b-650b-43db-9430-d84fc05d9433";
    mySigCalcKey = L"b758f20d-ba92-44fa-acca-f57e99787b9d";

    // Calculate the Signature header.
    crypt = CkCrypt2W_Create();
    CkCrypt2W_putMacAlgorithm(crypt,L"hmac");
    CkCrypt2W_putEncodingMode(crypt,L"base64");
    CkCrypt2W_SetMacKeyString(crypt,mySigCalcKey);
    CkCrypt2W_putHashAlgorithm(crypt,L"SHA-256");
    messageBody = CkJsonObjectW_emit(json);
    signature = CkCrypt2W_macStringENC(crypt,messageBody);

    CkHttpW_SetRequestHeader(http,L"Idempotency-Key",CkCrypt2W_generateUuid(crypt));
    CkHttpW_SetRequestHeader(http,L"Api-Key",myApiAccessKey);
    CkHttpW_SetRequestHeader(http,L"Signature",signature);
    CkHttpW_SetRequestHeader(http,L"Content-Type",L"application/json");
    CkHttpW_putAccept(http,L"application/json");

    resp = CkHttpW_PostJson3(http,L"https://api.sandbox.paynow.pl/v1/payments",L"application/json",json);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkCrypt2W_Dispose(crypt);
        return;
    }

    wprintf(L"Response body:\n");
    wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp));

    // Sample response:
    // {
    //   "redirectUrl": "https://paywall.sandbox.paynow.pl/NOA0-YJ9-Y1P-29V?token=eyJraWQiOiJhMD ... L60wk",
    //   "paymentId": "NOA0-YJ9-Y1P-29V",
    //   "status": "NEW"
    // }

    jsonResp = CkJsonObjectW_Create();
    CkJsonObjectW_Load(jsonResp,CkHttpResponseW_bodyStr(resp));
    redirectUrl = CkJsonObjectW_stringOf(json,L"redirectUrl");
    paymentId = CkJsonObjectW_stringOf(json,L"paymentId");
    status = CkJsonObjectW_stringOf(json,L"status");


    CkHttpW_Dispose(http);
    CkJsonObjectW_Dispose(json);
    CkCrypt2W_Dispose(crypt);
    CkJsonObjectW_Dispose(jsonResp);

    }