(Unicode C++) Refresh WiX Access Token

Request a new access token each time you call a WiX API. Use the refresh token together with your secret key, to request refresh tokens

For more information, see https://dev.wix.com/api/rest/authorization/oauth-2/refresh-an-access-token

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#include <CkHttpW.h>
#include <CkJsonObjectW.h>
#include <CkHttpResponseW.h>
#include <CkStringBuilderW.h>

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

    CkHttpW http;

    // Implements the following CURL command:

    // curl -X POST \
    //   https://www.wix.com/oauth/access \
    //   -H 'Content-Type: application/json' \
    //   -d '{
    //     "grant_type": "refresh_token",
    //     "client_id": <CLIENT_ID>,
    //     "client_secret": <CLIENT_SECRET>,
    //     "refresh_token": <REFRESH_TOKEN>
    // }'

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    // saved by this example: Get WiX OAuth2 Access Token

    CkJsonObjectW jsonToken;
    bool success = jsonToken.LoadFile(L"qa_data/tokens/wix.json");
    if (success != true) {
        wprintf(L"Failed to load square.json\n");
        return;
    }

    // Get the "refresh_token"
    const wchar_t *refreshToken = jsonToken.stringOf(L"refresh_token");

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

    // {
    //   "grant_type": "refresh_token",
    //   "client_id": <APP_ID>,
    //   "client_secret": <APP_SECRET>,
    //   "refresh_token": <REFRESH_TOKEN>
    // }

    CkJsonObjectW json;
    json.UpdateString(L"grant_type",L"refresh_token");
    json.UpdateString(L"client_id",L"CLIENT_ID");
    json.UpdateString(L"client_secret",L"CLIENT_SECRET");
    json.UpdateString(L"refresh_token",refreshToken);

    http.SetRequestHeader(L"Content-Type",L"application/json");

    CkHttpResponseW *resp = http.PostJson3(L"https://www.wix.com/oauth/access",L"application/json",json);
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkStringBuilderW sbResponseBody;
    resp->GetBodySb(sbResponseBody);
    CkJsonObjectW jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    int respStatusCode = resp->get_StatusCode();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",resp->header());
        wprintf(L"Failed.\n");
        delete resp;
        return;
    }

    delete resp;

    // Sample JSON response:

    // {
    //   "refresh_token": "OAUTH2.eyJraWQ ... vnB4cQ",
    //   "access_token": "OAUTH2.eyJra ... la18lrw"
    // }

    const wchar_t *refresh_token = jResp.stringOf(L"refresh_token");
    const wchar_t *access_token = jResp.stringOf(L"access_token");

    // Save the new JSON access token response to a file.
    sbResponseBody.WriteFile(L"qa_data/tokens/wix.json",L"utf-8",false);
    }