(Unicode C++) Shopware 6 - Get OAuth2 Access Token using Client Credentials (Integration)

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Demonstrates how to get an OAuth2 access token with an integration.

For more information, see https://docs.shopware.com/en/shopware-platform-dev-en/admin-api-guide/authentication

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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;
    bool success;

    // Sends the following POST

    // 	POST /api/oauth/token
    // 	{
    // 	    "grant_type": "client_credentials",
    // 	    "client_id": "<client-id>",
    // 	    "client_secret": "<client-secret>"
    // 	}

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

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

    CkJsonObjectW json;
    json.UpdateString(L"grant_type",L"client_credentials");
    json.UpdateString(L"client_id",L"client-id");
    json.UpdateString(L"client_secret",L"client-secret");

    CkHttpResponseW *resp = http.PostJson3(L"https://my-shopware-6-shop.de/api/oauth/token",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:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "token_type": "Bearer",
    //   "expires_in": 600,
    //   "access_token": "xxxxxxxxxxxxxx",
    //   "refresh_token": "token"
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    const wchar_t *token_type = jResp.stringOf(L"token_type");
    int expires_in = jResp.IntOf(L"expires_in");
    const wchar_t *access_token = jResp.stringOf(L"access_token");
    const wchar_t *refresh_token = jResp.stringOf(L"refresh_token");

    // Save our JSON to a file (to be used in other examples..)
    success = jResp.WriteFile(L"qa_data/tokens/shopware6.json");
    }