(Delphi DLL) Update a Task's Status to "completed"

Demonstrates how to update a Google task's status to "completed".

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, FileAccess, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
fac: HCkFileAccess;
accessToken: PWideChar;
success: Boolean;
http: HCkHttp;
taskId: PWideChar;
json: HCkJsonObject;
url: PWideChar;
resp: HCkHttpResponse;

begin
// 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 := CkFileAccess_Create();
accessToken := CkFileAccess__readEntireTextFile(fac,'qa_data/tokens/googleTasks.txt','utf-8');
if (CkFileAccess_getLastMethodSuccess(fac) <> True) then
  begin
    Memo1.Lines.Add(CkFileAccess__lastErrorText(fac));
    Exit;
  end;

http := CkHttp_Create();

CkHttp_putAuthToken(http,accessToken);

taskId := 'MDM4MzQ4NTA3NDQwMDUxMzQ2OTQ6NzAwOTA4MDA1NzU2ODYwMzoyMDg3OTcyMDA1MTQ5NTA0';

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

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

url := 'https://www.googleapis.com/tasks/v1/lists/{$tasklist}/tasks/{$task}';
resp := CkHttp_PText(http,'PUT',url,CkJsonObject__emit(json),'utf-8','application/json',False,False);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// Show the response body.
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

// Examine the response status code.
Memo1.Lines.Add('response status code: ' + IntToStr(CkHttpResponse_getStatusCode(resp)));

CkHttpResponse_Dispose(resp);

// 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

CkFileAccess_Dispose(fac);
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;