Pascal (Lazarus/Delphi)

Update a Task's Status to "completed"

See more Google Tasks Examples

Demonstrates how to update a Google task's status to "completed". 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.FileAccess,
  Chilkat.HttpResponse,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  fac: TFileAccess;
  accessToken: string;
  http: THttp;
  taskId: string;
  json: TJsonObject;
  url: string;
  resp: THttpResponse;

begin
  success := False;

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

  //  Get the previously obtained access token.
  //  See Get Google Tasks Access Token.

  fac := TFileAccess.Create;
  accessToken := fac.ReadEntireTextFile('qa_data/tokens/googleTasks.txt','utf-8');
  if (fac.LastMethodSuccess = False) then
    begin
      WriteLn(fac.LastErrorText);
      Exit;
    end;

  http := THttp.Create;

  http.AuthToken := accessToken;

  taskId := 'MDM4MzQ4NTA3NDQwMDUxMzQ2OTQ6NzAwOTA4MDA1NzU2ODYwMzoyMDg3OTcyMDA1MTQ5NTA0';

  //  Create the JSON to update the task status to completed.
  json := TJsonObject.Create;
  json.UpdateString('id',taskId);
  json.UpdateString('status','completed');

  //  Specify the ID's for both the task list and the task.
  http.SetUrlVar('tasklist','MDM4MzQ4NTA3NDQwMDUxMzQ2OTQ6NzAwOTA4MDA1NzU2ODYwMzow');
  http.SetUrlVar('task',taskId);

  url := 'https://www.googleapis.com/tasks/v1/lists/{$tasklist}/tasks/{$task}';
  resp := THttpResponse.Create;
  success := http.HttpJson('PUT',url,json,'application/json',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  Show the response body.
  WriteLn(resp.BodyStr);

  //  Examine the response status code.
  WriteLn('response status code: ' + resp.StatusCode);

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

  //  {
  //   "kind": "tasks#task",
  //   "id": "MDM4MzQ4NTA3NDQwMDUxMzQ2OTQ6NzAwOTA4MDA1NzU2ODYwMzoyMDg3OTcyMDA1MTQ5NTA0",
  //   "etag": "\"84_7Cubo3y98GMV9bE3zQclHxhc/MTQyMDUzMzQ4MA\"",
  //   "title": "Get haircut",
  //   "updated": "2019-04-04T18:07:58.000Z",
  //   "selfLink": "https://www.googleapis.com/tasks/v1/lists/MDM4MzQ4NTA3NDQwMDUxMzQ2OTQ6NzAwOTA4MDA1NzU2ODYwMzow/tasks/MDM4MzQ4NTA3NDQwMDUxMzQ2OTQ6NzAwOTA4MDA1NzU2ODYwMzoyMDg3OTcyMDA1MTQ5NTA0",
  //   "position": "00000000001610612734",
  //   "notes": "Check in online first.",
  //   "status": "completed",
  //   "completed": "2019-04-04T18:38:56.000Z"
  //  }
  //  
  //  response status code: 200


  fac.Free;
  http.Free;
  json.Free;
  resp.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.