(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 <C_CkAuthGoogle.h>
#include <C_CkRest.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkAuthGoogle gAuth;
    HCkRest rest;
    BOOL bAutoReconnect;
    HCkJsonObject json;
    const char *jsonResponse;

    // This example will upload a file to Google Drive.
    success = TRUE;

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

    gAuth = CkAuthGoogle_Create();
    CkAuthGoogle_putScope(gAuth,"https://www.googleapis.com/auth/drive");
    CkAuthGoogle_putSubEmailAddress(gAuth,"some.user@example.com");
    CkAuthGoogle_putExpireNumSeconds(gAuth,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

    rest = CkRest_Create();

    // Connect using TLS.
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"www.googleapis.com",443,TRUE,bAutoReconnect);

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

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

    // Specify each part of the request.

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

    json = CkJsonObject_Create();
    success = CkJsonObject_AddStringAt(json,-1,"title","helloWorld.txt");
    success = CkJsonObject_AddStringAt(json,-1,"description","A simple text file that says Hello World.");
    success = CkJsonObject_AddStringAt(json,-1,"mimeType","text/plain");
    success = CkRest_SetMultipartBodyString(rest,CkJsonObject_emit(json));

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

    // POST https://www.googleapis.com/upload/drive/v2/files
    jsonResponse = CkRest_fullRequestMultipart(rest,"POST","/upload/drive/v2/files?uploadType=multipart");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkAuthGoogle_Dispose(gAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        return;
    }

    // Show the JSON response.
    printf("Response Status Code: %d\n",CkRest_getResponseStatusCode(rest));
    printf("Json Response: %s\n",jsonResponse);


    CkAuthGoogle_Dispose(gAuth);
    CkRest_Dispose(rest);
    CkJsonObject_Dispose(json);

    }