(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 <C_CkAuthGoogleW.h>
#include <C_CkRestW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkStringArrayW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkAuthGoogleW gAuth;
    HCkRestW rest;
    BOOL bAutoReconnect;
    HCkJsonObjectW json;
    int i;
    int numFiles;
    const wchar_t *jsonResponse;
    int pageNumber;
    const wchar_t *pageToken;
    BOOL bContinueLoop;
    const wchar_t *fileId;
    HCkStringArrayW saFileIds;
    BOOL bHasMorePages;
    HCkStringBuilderW sbPath;

    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);

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

    json = CkJsonObjectW_Create();

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

    pageNumber = 1;

    bContinueLoop = CkRestW_getLastMethodSuccess(rest) && (CkRestW_getResponseStatusCode(rest) == 200);

    saFileIds = CkStringArrayW_Create();

    while (bContinueLoop == TRUE) {

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

        numFiles = CkJsonObjectW_SizeOfArray(json,L"files");
        i = 0;
        while (i < numFiles) {
            CkJsonObjectW_putI(json,i);
            fileId = CkJsonObjectW_stringOf(json,L"files[i].id");
            wprintf(L"name: %s\n",CkJsonObjectW_stringOf(json,L"files[i].name"));
            wprintf(L"id: %s\n",fileId);
            CkStringArrayW_Append(saFileIds,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 = CkJsonObjectW_stringOf(json,L"nextPageToken");
        bContinueLoop = FALSE;
        bHasMorePages = CkJsonObjectW_getLastMethodSuccess(json);
        if (bHasMorePages == TRUE) {
            CkRestW_ClearAllQueryParams(rest);
            CkRestW_AddQueryParam(rest,L"pageSize",L"10");
            CkRestW_AddQueryParam(rest,L"pageToken",pageToken);
            jsonResponse = CkRestW_fullRequestNoBody(rest,L"GET",L"/drive/v3/files");
            bContinueLoop = CkRestW_getLastMethodSuccess(rest) && (CkRestW_getResponseStatusCode(rest) == 200);
            pageNumber = pageNumber + 1;
        }

    }

    // Before actually deleting, check for errors...
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkStringArrayW_Dispose(saFileIds);
        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);
        CkStringArrayW_Dispose(saFileIds);
        return;
    }

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

        CkRestW_ClearAllQueryParams(rest);

        CkStringBuilderW_Clear(sbPath);
        CkStringBuilderW_Append(sbPath,L"/drive/v3/files/");
        CkStringBuilderW_Append(sbPath,fileId);

        jsonResponse = CkRestW_fullRequestNoBody(rest,L"DELETE",CkStringBuilderW_getAsString(sbPath));
        if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
            wprintf(L"%s\n",CkRestW_lastErrorText(rest));
            CkAuthGoogleW_Dispose(gAuth);
            CkRestW_Dispose(rest);
            CkJsonObjectW_Dispose(json);
            CkStringArrayW_Dispose(saFileIds);
            CkStringBuilderW_Dispose(sbPath);
            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 (CkRestW_getResponseStatusCode(rest) != 204) {
            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);
            CkStringArrayW_Dispose(saFileIds);
            CkStringBuilderW_Dispose(sbPath);
            return;
        }

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

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


    CkAuthGoogleW_Dispose(gAuth);
    CkRestW_Dispose(rest);
    CkJsonObjectW_Dispose(json);
    CkStringArrayW_Dispose(saFileIds);
    CkStringBuilderW_Dispose(sbPath);

    }