(Unicode C) Upload File from String

Uploads a text file where the contents of the file are contained in a string variable.

See Google Drive Files: create for more details.

Also See Google Drive Multipart Upload for more details.

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#include <C_CkAuthGoogleW.h>
#include <C_CkRestW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkAuthGoogleW gAuth;
    HCkRestW rest;
    BOOL bAutoReconnect;
    HCkJsonObjectW json;
    const wchar_t *fileContents;
    const wchar_t *jsonResponse;

    success = TRUE;

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

    // This example uses a previously obtained access token having permission for the 
    // Google Drive scope.

    gAuth = CkAuthGoogleW_Create();
    CkAuthGoogleW_putAccessToken(gAuth,L"GOOGLE-DRIVE-ACCESS-TOKEN");

    rest = CkRestW_Create();

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

    // Provide the authentication credentials (i.e. the access token)
    CkRestW_SetAuthGoogle(rest,gAuth);

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

    // Specify each part of the request.

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

    json = CkJsonObjectW_Create();
    CkJsonObjectW_AppendString(json,L"name",L"helloWorld.txt");
    CkJsonObjectW_AppendString(json,L"description",L"A simple text file that says Hello World.");
    CkJsonObjectW_AppendString(json,L"mimeType",L"text/plain");
    CkRestW_SetMultipartBodyString(rest,CkJsonObjectW_emit(json));

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

    fileContents = L"Hello World!";
    CkRestW_SetMultipartBodyString(rest,fileContents);

    jsonResponse = CkRestW_fullRequestMultipart(rest,L"POST",L"/upload/drive/v3/files?uploadType=multipart");
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (CkRestW_getResponseStatusCode(rest) != 200) {
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response JSON: %s\n",jsonResponse);
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        return;
    }

    // Show the JSON response.
    CkJsonObjectW_Load(json,jsonResponse);

    // Show the full JSON response.
    CkJsonObjectW_putEmitCompact(json,FALSE);
    wprintf(L"%s\n",CkJsonObjectW_emit(json));

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "Untitled",
    //   "mimeType": "text/plain"
    // }

    // Get the fileId:
    wprintf(L"fileId: %s\n",CkJsonObjectW_stringOf(json,L"id"));


    CkAuthGoogleW_Dispose(gAuth);
    CkRestW_Dispose(rest);
    CkJsonObjectW_Dispose(json);

    }