(Unicode C) Isabel Connect Create First Access Token and Refresh Token

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Creates your first access token and refresh token. Once created, the refresh token can be used to get a new access token after it expires, or before it expires.

For more information, see https://documentation.ibanity.com/isabel-connect/api#create-refresh-token

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#include <C_CkHttpW.h>
#include <C_CkCertW.h>
#include <C_CkHttpRequestW.h>
#include <C_CkCrypt2W.h>
#include <C_CkHttpResponseW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    HCkCertW cert;
    BOOL success;
    HCkHttpRequestW req;
    HCkCrypt2W crypt;
    const wchar_t *idempotencyKey;
    HCkHttpResponseW resp;
    HCkStringBuilderW sbResponseBody;
    HCkJsonObjectW jResp;
    int respStatusCode;
    const wchar_t *token_type;
    const wchar_t *scope;
    const wchar_t *refresh_token;
    int expires_in;
    const wchar_t *access_token;

    // 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 -X POST https://api.ibanity.com/isabel-connect/oauth2/token \
    // --cert certificate.pem:qwertyuiop1 \
    // --key private_key.pem  \
    // -H "Content-Type: application/x-www-form-urlencoded" \
    // -H "Accept: application/vnd.api+json" \
    // -H "Ibanity-Idempotency-Key: af621a8f-f74b-41a2-b011-336997633df4"  \
    // -d grant_type=authorization_code \
    // -d code=valid_authorization_code \
    // -d client_id=valid_client_id \
    // -d client_secret=valid_client_secret \
    // -d redirect_uri=https://fake-tpp.com 

    // Ibanity provides the certificate + private key in PFX format.  This example will use the .pfx instead of the pair of PEM files.
    // (It is also possible to implement using Chilkat with the PEM files, but PFX is easier.)
    cert = CkCertW_Create();
    success = CkCertW_LoadPfxFile(cert,L"qa_data/pfx/my_ibanity_certificate.pfx",L"my_pfx_password");
    if (success == FALSE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        return;
    }

    success = CkHttpW_SetSslClientCert(http,cert);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        return;
    }

    req = CkHttpRequestW_Create();
    CkHttpRequestW_putHttpVerb(req,L"POST");
    CkHttpRequestW_putPath(req,L"/isabel-connect/oauth2/token");
    CkHttpRequestW_putContentType(req,L"application/x-www-form-urlencoded");
    CkHttpRequestW_AddParam(req,L"grant_type",L"authorization_code");

    // Note: For sandbox testing, we literally want to use the strings
    // "valid_authorization_code", "valid_client_id", and "valid_client_secret".
    // For the live app, you would replace these with actual values.
    CkHttpRequestW_AddParam(req,L"code",L"valid_authorization_code");
    CkHttpRequestW_AddParam(req,L"client_id",L"valid_client_id");
    CkHttpRequestW_AddParam(req,L"client_secret",L"valid_client_secret");
    CkHttpRequestW_AddParam(req,L"redirect_uri",L"https://fake-tpp.com");

    CkHttpRequestW_AddHeader(req,L"Accept",L"application/vnd.api+json");

    crypt = CkCrypt2W_Create();
    idempotencyKey = CkCrypt2W_generateUuid(crypt);
    wprintf(L"Ibanity-Idempotency-Key: %s\n",idempotencyKey);
    CkHttpRequestW_AddHeader(req,L"Ibanity-Idempotency-Key",idempotencyKey);

    resp = CkHttpW_PostUrlEncoded(http,L"https://api.ibanity.com/isabel-connect/oauth2/token",req);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        CkHttpRequestW_Dispose(req);
        CkCrypt2W_Dispose(crypt);
        return;
    }

    sbResponseBody = CkStringBuilderW_Create();
    CkHttpResponseW_GetBodySb(resp,sbResponseBody);
    jResp = CkJsonObjectW_Create();
    CkJsonObjectW_LoadSb(jResp,sbResponseBody);
    CkJsonObjectW_putEmitCompact(jResp,FALSE);

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

    respStatusCode = CkHttpResponseW_getStatusCode(resp);
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",CkHttpResponseW_header(resp));
        wprintf(L"Failed.\n");
        CkHttpResponseW_Dispose(resp);
        CkHttpW_Dispose(http);
        CkCertW_Dispose(cert);
        CkHttpRequestW_Dispose(req);
        CkCrypt2W_Dispose(crypt);
        CkStringBuilderW_Dispose(sbResponseBody);
        CkJsonObjectW_Dispose(jResp);
        return;
    }

    CkHttpResponseW_Dispose(resp);

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "token_type": "Bearer",
    //   "scope": "cloudconnect",
    //   "refresh_token": "valid_refresh_token",
    //   "expires_in": 1799,
    //   "access_token": "access_token_1617371230"
    // }

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

    token_type = CkJsonObjectW_stringOf(jResp,L"token_type");
    scope = CkJsonObjectW_stringOf(jResp,L"scope");
    refresh_token = CkJsonObjectW_stringOf(jResp,L"refresh_token");
    expires_in = CkJsonObjectW_IntOf(jResp,L"expires_in");
    access_token = CkJsonObjectW_stringOf(jResp,L"access_token");

    // Save to a file for future use in refreshing the access token.
    // The refresh token is the same each time we refresh to get a new access token.
    success = CkJsonObjectW_WriteFile(jResp,L"qa_data/tokens/isabel_refresh_token.json");

    // Also save to a file to be used as the current access token.
    success = CkJsonObjectW_WriteFile(jResp,L"qa_data/tokens/isabel_access_token.json");


    CkHttpW_Dispose(http);
    CkCertW_Dispose(cert);
    CkHttpRequestW_Dispose(req);
    CkCrypt2W_Dispose(crypt);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkJsonObjectW_Dispose(jResp);

    }