Pascal (Lazarus/Delphi)

Moody's REST API - Get OAuth2 Token

See more Moody's Examples

Demonstrates how to get an OAuth2 access token for the Moody's REST API. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.HttpRequest,
  Chilkat.HttpResponse,
  Chilkat.FileAccess;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  req: THttpRequest;
  resp: THttpResponse;
  responseBody: string;
  fac: TFileAccess;

begin
  success := False;

  //  This example assumes the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  http := THttp.Create;

  req := THttpRequest.Create;
  req.AddParam('grant_type','password');
  req.AddParam('scope','api/ratings api/addin rest');
  req.AddParam('username','my_username');
  req.AddParam('password','my_password');
  //  I have no idea of where to get the client_id or client_secret.
  //  When you create a Moody's App, it only provides an "API Key".
  req.AddParam('client_id','my_client_id');
  req.AddParam('client_secret','my_client_secret');

  req.HttpVerb := 'POST';
  req.ContentType := 'application/x-www-form-urlencoded';

  resp := THttpResponse.Create;
  success := http.HttpReq('https://api.moodys.com/OAuth/Token',req,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn('status code = ' + resp.StatusCode);
  responseBody := resp.BodyStr;
  WriteLn(responseBody);

  //  Save the JSON to a file for future requests.
  if (resp.StatusCode = 200) then
    begin
      fac := TFileAccess.Create;
      fac.WriteEntireTextFile('qa_data/tokens/moodys.json',resp.BodyStr,'utf-8',False);
    end;


  http.Free;
  req.Free;
  resp.Free;
      fac.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.