(Delphi ActiveX) List Google Photos Albums

Demonstrates how to get a list of Google Photos albums.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: TChilkatJsonObject;
success: Integer;
http: TChilkatHttp;
resp: IChilkatHttpResponse;
json: TChilkatJsonObject;
i: Integer;
count_i: Integer;
id: WideString;
title: WideString;
productUrl: WideString;
mediaItemsCount: WideString;
coverPhotoBaseUrl: WideString;
coverPhotoMediaItemId: WideString;
isWriteable: Integer;

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 Photos Access Token.

jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/googlePhotos.json');
if (success = 0) then
  begin
    Memo1.Lines.Add(jsonToken.LastErrorText);
    Exit;
  end;

http := TChilkatHttp.Create(Self);

http.AuthToken := jsonToken.StringOf('access_token');

resp := http.QuickRequest('GET','https://photoslibrary.googleapis.com/v1/albums');
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// Examine the response status code.  Success is indicated by a status code of 200.
Memo1.Lines.Add('response status code: ' + IntToStr(resp.StatusCode));

json := TChilkatJsonObject.Create(Self);
json.Load(resp.BodyStr);

// Sample response:
json.EmitCompact := 0;
Memo1.Lines.Add(json.Emit());

// {
//   "albums": [
//     {
//       "id": "AKcbugFJDPVIW3w4JMTV9hWpjnvK-iHkZwS_FRuIm_jtqektmP7bTpvx27eETfLHOZrSznkt0bR3",
//       "title": "April 23, 2016",
//       "productUrl": "https://photos.google.com/lr/album/AKcbugFJDPVIW3w4JMTV9hWpjnvK-iHkZwS_FRuIm_jtqektmP7bTpvx27eETfLHOZrSznkt0bR3",
//       "mediaItemsCount": "1",
//       "coverPhotoBaseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e6L7ecrCQmp ... uXVvAoTeMwJg",
//       "coverPhotoMediaItemId": "AKcbugHEVyTFgIYb7GzhRFP5KvhBRIIsRcb6Cd4-2ByHzad2oqZnWF2aMPoXY-vfrXmefdTlyF3yZ22Odz6IFLs8pnJlOoVBUg"
//     },
//     {
//       "id": "AKcbugHJ4Zip9WHj_rpS9it133uu753VFffiNg9s0aapPSFAEzEwFxOuCG84OXYgJGclgnt1WqG1",
//       "title": "April 23, 2016",
//       "productUrl": "https://photos.google.com/lr/album/AKcbugHJ4Zip9WHj_rpS9it133uu753VFffiNg9s0aapPSFAEzEwFxOuCG84OXYgJGclgnt1WqG1",
//       "mediaItemsCount": "1",
//       "coverPhotoBaseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e5h7xK6G_baGN6KuuBHG5veLD49Xiaiix0GuTjii ... 7rkIexZj3AAdCA",
//       "coverPhotoMediaItemId": "AKcbugHEVyTFgIYb7GzhRFP5KvhBRIIsRcb6Cd4-2ByHzad2oqZnWF2aMPoXY-vfrXmefdTlyF3yZ22Odz6IFLs8pnJlOoVBUg"
//     },
//     {
//       "id": "AKcbugHaQTvUKSi3M2RQxOhxhdEaLc5mfUcqFoIU_kpQaROyUD70BcFt7_mnz5PcwwsjPKeKnLHN",
//       "title": "animals",
//       "productUrl": "https://photos.google.com/lr/album/AKcbugHaQTvUKSi3M2RQxOhxhdEaLc5mfUcqFoIU_kpQaROyUD70BcFt7_mnz5PcwwsjPKeKnLHN",
//       "isWriteable": true,
//       "coverPhotoBaseUrl": "https://lh3.googleusercontent.com/mL8RRbd0pjFIhHc0A4En4y7ZftwyjZTSp5YWX5j1EyPxX5GepHML"
//     }
//   ]
// }

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

i := 0;
count_i := json.SizeOfArray('albums');
while i < count_i do
  begin
    json.I := i;
    id := json.StringOf('albums[i].id');
    title := json.StringOf('albums[i].title');
    productUrl := json.StringOf('albums[i].productUrl');
    mediaItemsCount := json.StringOf('albums[i].mediaItemsCount');
    coverPhotoBaseUrl := json.StringOf('albums[i].coverPhotoBaseUrl');
    coverPhotoMediaItemId := json.StringOf('albums[i].coverPhotoMediaItemId');
    isWriteable := json.BoolOf('albums[i].isWriteable');
    i := i + 1;
  end;
end;