Pascal (Lazarus/Delphi)

CardConnect Void

See more CardConnect Examples

Demonstrates how to send a CardConnect void request.

The void service cancels a transaction that is in either "Authorized" or "Queued for Capture" status.. ...

See https://developer.cardconnect.com/cardconnect-api#void

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.HttpResponse,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  json: TJsonObject;
  url: string;
  resp: THttpResponse;
  jsonResp: TJsonObject;
  authcode: string;
  respproc: string;
  amount: string;
  resptext: string;
  currency: string;
  retref: string;
  respstat: string;
  respcode: string;
  merchid: string;

begin
  success := False;

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

  http := THttp.Create;

  http.BasicAuth := True;
  http.Login := 'API_USERNAME';
  http.Password := 'API_PASSWORD';

  //  Build and send the following JSON:

  //  The "retref" is the value returned in the JSON response for the Authorization request.

  //  {
  //      "retref":"112989260941",
  //      "merchid":"MERCHANT_ID"
  //  }

  json := TJsonObject.Create;
  json.UpdateString('retref','112989260941');
  json.UpdateString('merchid','MERCHANT_ID');

  url := 'https://<site>.cardconnect.com:<port>/cardconnect/rest/void';

  resp := THttpResponse.Create;
  success := http.HttpStr('PUT',url,json.Emit(),'utf-8','application/json',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  A response status of 200 indicates potential success.  The JSON response body
  //  must be examined to determine if it was truly successful or an error.
  WriteLn('response status code = ' + resp.StatusCode);

  jsonResp := TJsonObject.Create;
  jsonResp.Load(resp.BodyStr);
  jsonResp.EmitCompact := False;

  WriteLn('response JSON:');
  WriteLn(jsonResp.Emit());

  //  A successful response looks like this:

  //  {
  //    "authcode": "REVERS",
  //    "respproc": "FNOR",
  //    "amount": "0.00",
  //    "resptext": "Approval",
  //    "currency": "USD",
  //    "retref": "112989260941",
  //    "respstat": "A",
  //    "respcode": "00",
  //    "merchid": "496160873888"
  //  }

  //  Use this online tool to generate parsing code from sample JSON: 
  //  Generate Parsing Code from JSON

  authcode := jsonResp.StringOf('authcode');
  respproc := jsonResp.StringOf('respproc');
  amount := jsonResp.StringOf('amount');
  resptext := jsonResp.StringOf('resptext');
  currency := jsonResp.StringOf('currency');
  retref := jsonResp.StringOf('retref');
  respstat := jsonResp.StringOf('respstat');
  respcode := jsonResp.StringOf('respcode');
  merchid := jsonResp.StringOf('merchid');


  http.Free;
  json.Free;
  resp.Free;
  jsonResp.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.