(Delphi DLL) Google Photos List Media Items

List all media items from a user's Google Photos library.

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, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: HCkJsonObject;
success: Boolean;
http: HCkHttp;
resp: HCkHttpResponse;
json: HCkJsonObject;
i: Integer;
count_i: Integer;
id: PWideChar;
productUrl: PWideChar;
baseUrl: PWideChar;
mimeType: PWideChar;
mediaMetadataCreationTime: PWideChar;
mediaMetadataWidth: PWideChar;
mediaMetadataHeight: PWideChar;
mediaMetadataPhotoCameraMake: PWideChar;
mediaMetadataPhotoCameraModel: PWideChar;
mediaMetadataPhotoFocalLength: PWideChar;
mediaMetadataPhotoApertureFNumber: PWideChar;
mediaMetadataPhotoIsoEquivalent: Integer;
filename: PWideChar;
description: PWideChar;

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 := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/googlePhotos.json');
if (success = False) then
  begin
    Memo1.Lines.Add(CkJsonObject__lastErrorText(jsonToken));
    Exit;
  end;

http := CkHttp_Create();

CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

// For more information, see Google Photos List Media Items API Documentation

resp := CkHttp_QuickRequest(http,'GET','https://photoslibrary.googleapis.com/v1/mediaItems?pageSize=100');
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

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

json := CkJsonObject_Create();
CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkHttpResponse_Dispose(resp);

// Sample response:
CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

// (See parsing code below...)

// {
//   "mediaItems": [
//     {
//       "id": "AKcbugGCOVK46E2qq6tv_wEuQuoK_a0iHet9rGH0-UWoZFnTMpEZ2jNjHWggz7Aq3hhjJv4YJsDY6ntowKsvnfnr1Bu3ASnS_w",
//       "productUrl": "https://photos.google.com/lr/photo/AKcbugGCOVK46E2qq6tv_wEuQuoK_a0iHet9rGH0-UWoZFnTMpEZ2jNjHWggz7Aq3hhjJv4YJsDY6ntowKsvnfnr1Bu3ASnS_w",
//       "baseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e7ZcHJhUmxO8EgRSBFyBaGAyXE...YMWCAMDlNTA6-L5LiijXAUfKgD1ULhr9IabJBGTT7ETUdeeFTQTM",
//       "mimeType": "image/jpeg",
//       "mediaMetadata": {
//         "creationTime": "2019-04-11T17:55:53Z",
//         "width": "640",
//         "height": "480",
//         "photo": {
//           "cameraMake": "Apple",
//           "cameraModel": "iPhone 5s",
//           "focalLength": 4.15,
//           "apertureFNumber": 2.2,
//           "isoEquivalent": 32
//         }
//       },
//       "filename": "IMG_1206.JPG"
//     },
//     {
//       "id": "AKcbugFACWDNCQJ2nwhDemR6vRupHSvOUSKukyOHqTWO1CCIs0qw-C0b5MGmrveyjYe8ps8z1rZTRQ8hmSQsODSsobNqDl8vTg",
//       "productUrl": "https://photos.google.com/lr/photo/AKcbugFACWDNCQJ2nwhDemR6vRupHSvOUSKukyOHqTWO1CCIs0qw-C0b5MGmrveyjYe8ps8z1rZTRQ8hmSQsODSsobNqDl8vTg",
//       "baseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e7NQe0qdoZrDHkfkK7LOsw-V...YJ1mrohD5duHsY2QJCzLTXZ65EOUrJefars3xDSwsCYlelY470kk",
//       "mimeType": "image/jpeg",
//       "mediaMetadata": {
//         "creationTime": "2016-10-09T01:49:58Z",
//         "width": "600",
//         "height": "427",
//         "photo": {}
//       },
//       "filename": "hedgehogs.jpg"
//     },
//     {
//       "id": "AKcbugHEVyTFgIYb7GzhRFP5KvhBRIIsRcb6Cd4-2ByHzad2oqZnWF2aMPoXY-vfrXmefdTlyF3yZ22Odz6IFLs8pnJlOoVBUg",
//       "productUrl": "https://photos.google.com/lr/photo/AKcbugHEVyTFgIYb7GzhRFP5KvhBRIIsRcb6Cd4-2ByHzad2oqZnWF2aMPoXY-vfrXmefdTlyF3yZ22Odz6IFLs8pnJlOoVBUg",
//       "baseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e64wP9gpPXKq5b8FCFKzu9C...QTFxMLVRaLeQZBvYGZVIe7xCcRPnRhMpiXwL_RV_aU",
//       "mimeType": "image/jpeg",
//       "mediaMetadata": {
//         "creationTime": "2015-09-21T20:30:02Z",
//         "width": "59",
//         "height": "69",
//         "photo": {}
//       },
//       "filename": "chilkat_gravatar.jpg"
//     },
//     {
//       "id": "AKcbugHdYTp-S-D_EYnSBA4EhrKT86IFbmdRuiDclKka9T5b6UIbeDvhTAu1bebYOCFKH-gv1ME1z6RyMN4eW_9J5ol9_qizMg",
//       "productUrl": "https://photos.google.com/lr/photo/AKcbugHdYTp-S-D_EYnSBA4EhrKT86IFbmdRuiDclKka9T5b6UIbeDvhTAu1bebYOCFKH-gv1ME1z6RyMN4eW_9J5ol9_qizMg",
//       "baseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e4e69WQpYcQX...m87rR6gDBhcB55TL__3ckBYNQ8MjbqpBtmojjYWrLG_j4VsVSA",
//       "mimeType": "image/jpeg",
//       "mediaMetadata": {
//         "creationTime": "2008-05-29T15:30:55Z",
//         "width": "120",
//         "height": "120",
//         "photo": {}
//       },
//       "filename": "starfish.jpg"
//     },
//     {
//       "id": "AKcbugGwtCih2tdl3s1-NMvZFaco3W7XnRwvwtj02J9DJyl6JmrLZDVUFcxQl4AT04LaNrPpsrojeTsDSzOVOF5IgKefD0Y-MQ",
//       "description": "Photo of Penguins",
//       "productUrl": "https://photos.google.com/lr/photo/AKcbugGwtCih2tdl3s1-NMvZFaco3W7XnRwvwtj02J9DJyl6JmrLZDVUFcxQl4AT04LaNrPpsrojeTsDSzOVOF5IgKefD0Y-MQ",
//       "baseUrl": "https://lh3.googleusercontent.com/lr/AGWb-e5Cj3EgyhscdT...X3-W562iiKtTa8lc_QPxCrpJu-m7cZyNGwGTANVpGe1XG",
//       "mimeType": "image/jpeg",
//       "mediaMetadata": {
//         "creationTime": "2008-02-18T05:07:31Z",
//         "width": "1024",
//         "height": "768",
//         "photo": {}
//       },
//       "filename": "penguins.jpg"
//     }
//   ]
// }
// 

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

i := 0;
count_i := CkJsonObject_SizeOfArray(json,'mediaItems');
while i < count_i do
  begin
    CkJsonObject_putI(json,i);
    id := CkJsonObject__stringOf(json,'mediaItems[i].id');
    productUrl := CkJsonObject__stringOf(json,'mediaItems[i].productUrl');
    baseUrl := CkJsonObject__stringOf(json,'mediaItems[i].baseUrl');
    mimeType := CkJsonObject__stringOf(json,'mediaItems[i].mimeType');
    mediaMetadataCreationTime := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.creationTime');
    mediaMetadataWidth := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.width');
    mediaMetadataHeight := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.height');
    mediaMetadataPhotoCameraMake := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.photo.cameraMake');
    mediaMetadataPhotoCameraModel := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.photo.cameraModel');
    mediaMetadataPhotoFocalLength := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.photo.focalLength');
    mediaMetadataPhotoApertureFNumber := CkJsonObject__stringOf(json,'mediaItems[i].mediaMetadata.photo.apertureFNumber');
    mediaMetadataPhotoIsoEquivalent := CkJsonObject_IntOf(json,'mediaItems[i].mediaMetadata.photo.isoEquivalent');
    filename := CkJsonObject__stringOf(json,'mediaItems[i].filename');
    description := CkJsonObject__stringOf(json,'mediaItems[i].description');
    i := i + 1;
  end;

CkJsonObject_Dispose(jsonToken);
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);

end;