(Unicode C++) Google Drive Multipart Upload String

Demonstrates a file upload to Google Drive where the contents of the file are contained in a string variable.

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#include <CkAuthGoogleW.h>
#include <CkRestW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    // This example will upload a file to Google Drive.
    bool success = true;

    // It requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkAuthGoogleW gAuth;
    gAuth.put_Scope(L"https://www.googleapis.com/auth/drive");
    gAuth.put_SubEmailAddress(L"some.user@example.com");
    gAuth.put_ExpireNumSeconds(3600);

    // Obtain an access token as shown in one of the following examples:
    // See Get Access Token using a Service Account JSON Key
    // See Get Access Token using a P12 File

    CkRestW rest;

    // Connect using TLS.
    bool bAutoReconnect = true;
    success = rest.Connect(L"www.googleapis.com",443,true,bAutoReconnect);

    // Provide the authentication credentials (i.e. the access key)
    success = rest.SetAuthGoogle(gAuth);

    // A multipart upload to Google Drive needs a multipart/related Content-Type
    success = rest.AddHeader(L"Content-Type",L"multipart/related");

    // Specify each part of the request.

    // The 1st part is JSON with information about the file.
    rest.put_PartSelector(L"1");
    success = rest.AddHeader(L"Content-Type",L"application/json; charset=UTF-8");

    CkJsonObjectW json;
    success = json.AddStringAt(-1,L"title",L"helloWorld.txt");
    success = json.AddStringAt(-1,L"description",L"A simple text file that says Hello World.");
    success = json.AddStringAt(-1,L"mimeType",L"text/plain");
    success = rest.SetMultipartBodyString(json.emit());

    // The 2nd part is the file content.
    // In this case, we'll upload a simple text file containing "Hello World!"
    rest.put_PartSelector(L"2");
    success = rest.AddHeader(L"Content-Type",L"text/plain");
    success = rest.SetMultipartBodyString(L"Hello World!");

    // POST https://www.googleapis.com/upload/drive/v2/files
    const wchar_t *jsonResponse = rest.fullRequestMultipart(L"POST",L"/upload/drive/v2/files?uploadType=multipart");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // Show the JSON response.
    wprintf(L"Response Status Code: %d\n",rest.get_ResponseStatusCode());
    wprintf(L"Json Response: %s\n",jsonResponse);
    }