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Unicode C++ Examples

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(Unicode C++) Delete All Files

Permanently deletes all files owned by the user without moving it to the trash.

This example works by first getting a list of all fileIds, and then iterating over the list to delete each file.

See Google Drive Files delete for more information.

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

void ChilkatSample(void)
    {
    bool 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.

    CkAuthGoogleW gAuth;
    gAuth.put_AccessToken(L"GOOGLE-DRIVE-ACCESS-TOKEN");

    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 token)
    rest.SetAuthGoogle(gAuth);

    //  Get 10 results per page for testing.  (The default page size is 100, with a max of 1000.
    rest.AddQueryParam(L"pageSize",L"10");

    CkJsonObjectW json;
    int i;
    int numFiles;

    //  Send the request for the 1st page.
    const wchar_t *jsonResponse = rest.fullRequestNoBody(L"GET",L"/drive/v3/files");

    int pageNumber = 1;
    const wchar_t *pageToken = 0;
    bool bContinueLoop = rest.get_LastMethodSuccess() && (rest.get_ResponseStatusCode() == 200);

    const wchar_t *fileId = 0;
    CkStringArrayW saFileIds;

    while (bContinueLoop == true) {

        wprintf(L"---- Page %d ----\n",pageNumber);
        json.Load(jsonResponse);

        numFiles = json.SizeOfArray(L"files");
        i = 0;
        while (i < numFiles) {
            json.put_I(i);
            fileId = json.stringOf(L"files[i].id");
            wprintf(L"name: %s\n",json.stringOf(L"files[i].name"));
            wprintf(L"id: %s\n",fileId);
            saFileIds.Append(fileId);
            i = i + 1;
        }

        //  Get the next page of files.
        //  If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
        //  for the next request.   If no "nextPageToken" was present, then this was the last page of files.
        pageToken = json.stringOf(L"nextPageToken");
        bContinueLoop = false;
        bool bHasMorePages = json.get_LastMethodSuccess();
        if (bHasMorePages == true) {
            rest.ClearAllQueryParams();
            rest.AddQueryParam(L"pageSize",L"10");
            rest.AddQueryParam(L"pageToken",pageToken);
            jsonResponse = rest.fullRequestNoBody(L"GET",L"/drive/v3/files");
            bContinueLoop = rest.get_LastMethodSuccess() && (rest.get_ResponseStatusCode() == 200);
            pageNumber = pageNumber + 1;
        }

    }

    //  Before actually deleting, check for errors...
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    //  A successful response will have a status code equal to 200.
    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"response status code = %d\n",rest.get_ResponseStatusCode());
        wprintf(L"response status text = %s\n",rest.responseStatusText());
        wprintf(L"response header: %s\n",rest.responseHeader());
        wprintf(L"response JSON: %s\n",jsonResponse);
        return;
    }

    //  OK, we have the full list of files.  Delete each..
    CkStringBuilderW sbPath;
    numFiles = saFileIds.get_Count();
    i = 0;
    while (i < numFiles) {
        fileId = saFileIds.getString(i);

        rest.ClearAllQueryParams();

        sbPath.Clear();
        sbPath.Append(L"/drive/v3/files/");
        sbPath.Append(fileId);

        jsonResponse = rest.fullRequestNoBody(L"DELETE",sbPath.getAsString());
        if (rest.get_LastMethodSuccess() != true) {
            wprintf(L"%s\n",rest.lastErrorText());
            return;
        }

        //  A successful response will have a status code equal to 204 and the response body is empty.
        //  (If not successful, then there should be a JSON response body with information..)
        if (rest.get_ResponseStatusCode() != 204) {
            wprintf(L"response status code = %d\n",rest.get_ResponseStatusCode());
            wprintf(L"response status text = %s\n",rest.responseStatusText());
            wprintf(L"response header: %s\n",rest.responseHeader());
            wprintf(L"response JSON: %s\n",jsonResponse);
            return;
        }

        i = i + 1;
        wprintf(L"%d: Deleted %s\n",i,fileId);
    }

    wprintf(L"All Files Deleted.\n");
    }

 

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