(Delphi DLL) Delete a Google Cloud Storage Bucket

Demonstrates how to delete a Google Cloud Storage bucket.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
sbToken: HCkStringBuilder;
http: HCkHttp;
url: PWideChar;
responseBody: PWideChar;
responseCode: Integer;

begin
// This example 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 
// scope "https://www.googleapis.com/auth/cloud-platform"

// In this example, Get Google Cloud Storage OAuth2 Access Token, 
// the service account access token was saved to a text file.  This example fetches the access token from the file..
sbToken := CkStringBuilder_Create();
CkStringBuilder_LoadFile(sbToken,'qa_data/tokens/googleCloudStorageAccessToken.txt','utf-8');

// Send a DELETE equivalent to this curl command

// curl -X DELETE -H "Authorization: Bearer [OAUTH2_TOKEN]" \
//     "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]"
// 
http := CkHttp_Create();
CkHttp_putAuthToken(http,CkStringBuilder__getAsString(sbToken));

CkHttp_SetUrlVar(http,'bucket_name','chilkat-ocean');
url := 'https://www.googleapis.com/storage/v1/b/{$bucket_name}';

responseBody := CkHttp__quickDeleteStr(http,url);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

responseCode := CkHttp_getLastStatus(http);
if (responseCode = 401) then
  begin
    Memo1.Lines.Add(responseBody);
    Memo1.Lines.Add('If invalid credentials, then it is likely the access token expired.');
    Memo1.Lines.Add('Your app should automatically fetch a new access token and re-try.');
    Exit;
  end;

// A 204 response code indicates success..
// If not success, then examine the response code and response body..
if (responseCode <> 204) then
  begin
    Memo1.Lines.Add('Response code: ' + IntToStr(responseCode));
    Memo1.Lines.Add('Response body');
    Memo1.Lines.Add(responseBody);
  end
else
  begin
    Memo1.Lines.Add('Success.');
  end;

CkStringBuilder_Dispose(sbToken);
CkHttp_Dispose(http);

end;