(C) Moody's REST API - Get OAuth2 Token

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Demonstrates how to get an OAuth2 access token for the Moody's REST API.

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#include <C_CkHttp.h>
#include <C_CkHttpRequest.h>
#include <C_CkHttpResponse.h>
#include <C_CkFileAccess.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    HCkHttpRequest req;
    HCkHttpResponse resp;
    const char *responseBody;
    HCkFileAccess fac;

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

    http = CkHttp_Create();

    req = CkHttpRequest_Create();
    CkHttpRequest_AddParam(req,"grant_type","password");
    CkHttpRequest_AddParam(req,"scope","api/ratings api/addin rest");
    CkHttpRequest_AddParam(req,"username","my_username");
    CkHttpRequest_AddParam(req,"password","my_password");
    // I have no idea of where to get the client_id or client_secret.
    // When you create a Moody's App, it only provides an "API Key".
    CkHttpRequest_AddParam(req,"client_id","my_client_id");
    CkHttpRequest_AddParam(req,"client_secret","my_client_secret");

    resp = CkHttp_PostUrlEncoded(http,"https://api.moodys.com/OAuth/Token",req);
    if (CkHttp_getLastMethodSuccess(http) != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkHttpRequest_Dispose(req);
        return;
    }

    printf("status code = %d\n",CkHttpResponse_getStatusCode(resp));
    responseBody = CkHttpResponse_bodyStr(resp);
    printf("%s\n",responseBody);

    // Save the JSON to a file for future requests.
    if (CkHttpResponse_getStatusCode(resp) == 200) {
        fac = CkFileAccess_Create();
        CkFileAccess_WriteEntireTextFile(fac,"qa_data/tokens/moodys.json",CkHttpResponse_bodyStr(resp),"utf-8",FALSE);
    }

    CkHttpResponse_Dispose(resp);


    CkHttp_Dispose(http);
    CkHttpRequest_Dispose(req);
    CkFileAccess_Dispose(fac);

    }