Dart

Delete All Files

See more Google Drive Examples

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.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // 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.

  final gAuth = CkAuthGoogle();
  gAuth.accessToken = 'GOOGLE-DRIVE-ACCESS-TOKEN';

  final rest = CkRest();

  // Connect using TLS.
  final bAutoReconnect = true;
  rest.connect('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('pageSize', '10');

  final json = CkJsonObject();
  var i = 0;
  var numFiles = 0;

  // Send the request for the 1st page.
  var jsonResponse = rest.fullRequestNoBody('GET', '/drive/v3/files');

  var pageNumber = 1;
  var pageToken = '';
  var bContinueLoop = rest.lastMethodSuccess && (rest.responseStatusCode == 200);

  var fileId = '';
  final saFileIds = CkStringArray();

  while (bContinueLoop) {

    print('---- Page $pageNumber ----');
    json.load(jsonResponse);

    numFiles = json.sizeOfArray('files');
    i = 0;
    while (i < numFiles) {
      json.i = i;
      fileId = json.stringOf('files[i].id');
      print('name: ${json.stringOf('files[i].name')}');
      print('id: $fileId');
      saFileIds.append(fileId);
      i++;
    }

    // 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('nextPageToken');
    bContinueLoop = false;
    final bHasMorePages = json.lastMethodSuccess;
    if (bHasMorePages) {
      rest.clearAllQueryParams();
      rest.addQueryParam('pageSize', '10');
      rest.addQueryParam('pageToken', pageToken);
      jsonResponse = rest.fullRequestNoBody('GET', '/drive/v3/files');
      bContinueLoop = rest.lastMethodSuccess && (rest.responseStatusCode == 200);
      pageNumber++;
    }
  }

  // Before actually deleting, check for errors...
  if (!rest.lastMethodSuccess) {
    print(rest.lastErrorText);
    return;
  }

  // A successful response will have a status code equal to 200.
  if (rest.responseStatusCode != 200) {
    print('response status code = ${rest.responseStatusCode}');
    print('response status text = ${rest.responseStatusText}');
    print('response header: ${rest.responseHeader}');
    print('response JSON: $jsonResponse');
    return;
  }

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

    rest.clearAllQueryParams();

    sbPath.clear();
    sbPath.append('/drive/v3/files/');
    sbPath.append(fileId);

    try {
      jsonResponse = rest.fullRequestNoBody('DELETE', sbPath.getAsString());
    } on ChilkatException catch (e) {
      print(e.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.responseStatusCode != 204) {
      print('response status code = ${rest.responseStatusCode}');
      print('response status text = ${rest.responseStatusText}');
      print('response header: ${rest.responseHeader}');
      print('response JSON: $jsonResponse');
      return;
    }

    i++;
    print('$i: Deleted $fileId');
  }

  print('All Files Deleted.');
}