Delphi OAuth2 Client

uses
  sgcHTTP, sgcHTTP_OAuth_Types;

// OAuth2 is a form field: OAuth2: TsgcHTTP_OAuth2_Client;
procedure TForm1.Authorize;
begin
  OAuth2 := TsgcHTTP_OAuth2_Client.Create(nil);
  OAuth2.OnAfterAccessToken := OnAfterAccessTokenEvent;

  OAuth2.OAuth2Options.GrantType    := auth2CodePKCE;
  OAuth2.OAuth2Options.ClientId     := 'your-client-id';
  OAuth2.OAuth2Options.ClientSecret := 'your-client-secret';

  OAuth2.AuthorizationServerOptions.AuthURL  := 'https://auth.example.com/authorize';
  OAuth2.AuthorizationServerOptions.TokenURL := 'https://auth.example.com/token';
  OAuth2.AuthorizationServerOptions.Scope.Clear;
  OAuth2.AuthorizationServerOptions.Scope.Add('profile');
  OAuth2.AuthorizationServerOptions.Scope.Add('email');

  OAuth2.LocalServerOptions.IP          := '127.0.0.1';
  OAuth2.LocalServerOptions.Port        := 5555;
  OAuth2.LocalServerOptions.RedirectURL := 'http://localhost:5555/callback';

  // Spawns the user browser at the auth URL and returns immediately
  OAuth2.Start;
end;

// ... the user logs in, the browser is redirected to the callback URL,
// ... the component captures the code and exchanges it for tokens
procedure TForm1.OnAfterAccessTokenEvent(Sender: TObject; const Access_Token,
  Token_Type, Expires_In, Refresh_Token, Scope, RawParams: String;
  var Handled: Boolean);
begin
  ShowMessage(Access_Token);
end;